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Патент USA US3020956

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Feb. 13, 1962
M. E. MILLS
3,020,946
ANCHOR NUT WITH SPHERICAL SURFACE TO PERMIT ANGULAR MOVEMENT
4 Sheets-Sheet 1
Filed Feb. 28, 1957
FIGJ
‘FIG.2
INVENTOR
MALCOLM E MILLS
‘LATTORNEY
Feb. 13, 1962
M. E. MILLS
3,020,946
ANCHOR NUT WITH SPHERICAL SURFACE TO PERMIT ANGULAR MOVEMENT
Filed Feb. 28_ 1957
4 Sheets-Sheet 2
‘
"‘
INVENTOR
MALCOLM E MILLS
ATTORNEY
Feb. 13, 1962
M. E. MILLS
3,020,946
ANCHOR NUT WITH SPHERICAL SURFACE TO PERMIT ANGULAR MOVEMENT
Filed Feb. 28, 1957
FIG.|3
4 Sheets-Sheet 3
“I ",l
34
FIG.|4
37 4o 33 32
4
INVENTOR
MALCOLM E MILLS
Feb. 13, 1962
M. E. MILLS
3,020,946
ANCHOR NUT WITH SPHERICAL SURFACE TO PERMIT ANGULAR MOVEMENT
Filed Feb. 28, 1957
4 Sheets-Sheet 4
F|G.l5
FIG- '6
43
35
32
49
56
36
36
55
56%“; '-
55
l
36
55
INVENTOR
MALCOLM E MILLS
' ATTORNEY
United States Patent 0” "ice
3,020,946
Patented Feb. 13, 1962
2
1
FIG. 14 is a section taken on the line 14-—14 of
FIG. 12;
~ 3,020,946
ANCHOR NUT WITH SPHERICAL SURFACE TO
PERMIT ANGULAR MOVEMENT
Malcolm E. Mills, Millburn, N.J., assignor to Elastic Stop
Nut Corporation of America, Union, N.J., a corpora
tion of New Jersey
FIG. 15 is a vertical elevation, taken from one end, of
the structure shown in FIG. 12;
FIG. 16 is a section taken on the line 16-—16 of
FIG. 12;
FIG. 17 is a plan view of a base plate of the assembly
Filed Feb. 28, 1957, Ser. No. 643,136
10 Claims. (Cl. 151-41.71)
shown in FIGS. 13 and 14;
FIG. 18 is a top plan view of the basket element em
This invention relates to fastening devices and has par 10 bodied in the arrangement shown in FIGS. 12 to 14;
FIG. 19 is a section taken on the line 19-19 of
ticular reference to screw threaded fastening devices.
More particularly, the invention relates to that type of
FIG. 18;
fastening device which may be embodied in the form of
FIG. 20 is a section taken on the line 20--20 of
a so-called “gang-channel” fastening wherein a plurality
FIG. 18;
of nuts mounted in a common channel are located to 15
receive bolts passing through the sheet or other material
to be secured to the structure to which the so-called
“gang-channel” is secured.
FIG. 21 is a top plan view of the clip member forming
part of the assembly shown in FIGS. 12 to 14;
FIGS. 22 and 23 are sections of the clip member
shown in FIG. 21.
'
'
With continued reference to the drawings, there is
plicity of bolts 01‘ studs, minor misalignment is inevitable 20 shown in FIGS. 1 to 11 inclusive a gang-channel fas->
and in order to take care of such misalignment various
tening device constructed in accordance with this inven
expedients heretofore have been used to permit the indi
tion and which may well include an elongated channel
vidual bolt receiving nuts to “?oat” laterally, in order to
member 10 of any desired length, such channel member
enable the desired assembly to be made.
10 having a base or web 11, sidewalls 12 and over
However, in addition to lateral misalignment there may 25 hanging inturned edge ?anges 13. A plurality of nut
also occur angular misalignment and the general object
assemblies 14- are slidably received within the sidewalls
of the present invention is to provide a structure which
12 of the channel 10 and are retained in such channel
by the overhanging edge ?anges 13. The nut assemwill enable fastenings to be satisfactorily made, not only
from the standpoint of lateral misalignment, but also if
blies 14 are disposed in spaced relationship and any de
the angular alignment is not correct. In other words,
sired number may be employed, depending upon lltllie
In such constructions, requiring the use of a multi
the invention contemplates a structure which will com
pensate for angular misalignment as well as lateral mis
' number of bolts or screws which it is desired to use.
e
alignment and for the purposes of the ensuing description,
nut assemblies 14 are slidable longitudinally of the chan
nel 10 for a limited distance, in order to provide for
this arrangement will be generally referred to as a
lateral misalignment with bolts or screws to be received
“swivel” arrangement for compensating for angular mis 35 therein and the structure serving to limit the sliding move
alignment, as well as lateral or offset misalignment.
As hereinabove noted, one particular embodiment of
the invention is concerned with the use of fastening de
vices embodied in a so-called “gang-channel” assembly,
but the invention is also applicable in individual anchor
nut constructions in which only a single nut is embodied
in a ?xed casing and in which it can have not only lat
eral movement to compensate for axial misalignment,
but also may have a swivel movement to compensate for
angular misalignment of the bolt or stud to be threaded
into the nut member.
Further and more detailed objects of the invention will
become apparent from the ensuing portion of this speci
?cation, descriptive of embodiments of the invention as
illustrated in the accompanying drawings, in which:
FIG. 1 is a top plan view of a so-called gang-channel
nut assembly embodying the principles of the invention;
ment of the nut assemblies 14 will be presently described.
Each nut assembly 14 includes a base element 15, a
nut element 16 and a clip element 17. As best shown
in FIGS. 7 and 8, the base element 15 may well comprise
a thimble or ring having an axial bore 18 and provided
with an annular ?ange 19 terminating at the lower edge
in a shoulder 20. The ?ange 19 is formed to provide
an upper spherical or arcuate bearing surface 21, the pur
pose of which will presently appear.
45
As best shown in FIGS. 5 and 6, the nut element 16
is provided with an axial threaded bore 22 and the nut,’
element 16 terminates at the lower edge in a ?ange 23
having an upper downwardly and outwardly inclined surf
face 24. The threaded bore 22 in the nut element 16‘
50 terminates at the lower end in a spherical recess 25 which
is complementary to the spherical surface 21 on the base
element 15. As shown in FIG. 5, the ?ange 23 on the
nut element 16 is provided with diametrically disposed
outwardly extending cars 26, the purpose of which will
FIG. 2 is a section taken on the line 2—2 of FIG. 1;
FIG. 3 is a section taken on the line 3-—3 of FIG. 1;
FIG. 4 is a section taken on the line 4—4 of FIG. 1; 55 presently appear.
FIG. 5 is a top plan view of the nut element shown in
Also forming a part of the nut assembly 14 and shown
in detail in FIGS. 9, l0 and 11, is a clip element 17
formed of sheet metal of a suitable gauge and the clip
FIG. 6 is a section taken on the line 6—6 of FIG. 5;
element is shown in ?at formation prior to bending in
FIG. 7 is a top plan view of the base element of the
60 FIG. 9 and is provided with a central aperture 27 and
assembly of FIG. 1;
with generally U-shaped slots 28 in each end thereof. The
FIG. 8 is a section taken on the line 8-—8 of FIG. 7;
clip element 17 is bent to the formation shown in FIGS.
FIG. 9 is a plan view of the clip element of the assem
10 and 11 to provide a web portion 29 having the aperture
bly shown in FIG. 1;
27 and side ?anges 30 having the slots 28.
FIG. 10 is a plan view showing the clip element bent
65
As best shown in FIGS. 1, 2 and 3, the base element‘
to the dimensions shown in FIG. 1;
15 is positioned within the channel member 10 with the
FIG. 11 is a section taken on the line 11—11 of
base member 15 in engagement with the bottom wall or
FIG. 10;
web 11 of the channel member 10 and the nut element
FIG. 12 is a top plan view of a ?oating anchor nut
FIG. 1;
assembly embodying the principles of the invention;
16 is positioned substantially axially of the base element
FIG. 12;
element 16 engaging the spherical bearing surface 21
FIG. 13 is .an elevation of the structure shown in 70 15 with the surface of the spherical recess 25 in the nut-\
3,020,946
3
4
As shown in FIGS. 18 to 20, the basket element 35 is
on the ?ange 19 of the base element 15. The clip element
of generally U-shaped formation with outwardly extend
17 is positioned over the nut element 16 with the edge of
ing oppositely disposed ears 47 provided with apertures
the aperture 27 in the clip element 17 engaging the out
48 and upwardly extending spaced legs 49 terminating at
wardly and downwardly inclined upper surface 24 of the
?ange 23 on the nut element 16 and with the ?anges 30 CI their upper ends in a web or central portion 50 having
a central aperture 51 surrounded by an upwardly extend
of the clip element 17 disposed on opposite sides of the
ing collar 52. Provided in the spaced legs 49 are slots 53,
nut element 16 and base element 15 and with the ears 26
the purpose of which will presently appear.
on the nut element 16 extending through the slots 28 in
As best shown in FIGS. 21 to 23, the clip member 36
the clip element 17.
As will be seen from an inspection of FIGS. 1, 2 and 3, 10 is formed of sheet metal of suitable gauge and is of gener
ally rectangular construction having a central aperture 54,
upwardly extending oppositely disposed lugs 55 on op
mined by the clearance of the ears 26 in the slots 28 of
the nut element 16 may rotate a limited distance deter
posite side edges of the clip member 36 and downwardly
extending oppositely disposed ?anges 56 on the other
the clip element 17 and also the nut element 16 may rock
or move angularly on the spherical bearing surface 21 of
the base element 15 to change the angular alignment of 15 side edges of the clip member 36. The clip member 36
reinforces the basket element 35 and provides additional
the axis of the threaded bore 22 in the nut element 16.
strength for resisting upward movement of the nut ele
Also the entire nut assembly 14, including the base ele
ment 15, the nut element 16 and the clip element 17 may
slide longitudinally in the channel member 10 to correct
for lateral misalignment of the threaded bore 22 in nut
element 16.
Since it is desired to limit longitudinal sliding movement
of the nut assemblies 14 in the channel member 19, there
may be provided for this purpose in the bottom wall
or web 11 of the channel member It}, struck up tabs 31,
there being one such tab provided on opposite sides of
each nut assembly 14, which tabs are spaced the desired
distance from the ?anges 3d of the clip member 17, in
order to limit longitudinal sliding movement of the nut
assembly to the space between the tabs 31. It is to be
understood, that as shown in FIG. 1, at least one pair
of tabs 31 is provided for each nut assembly 14.
It will, therefore, be seen that by the above described
form of the invention there has been provided a gang~chan
nel fastening device which will serve to compensate for
lateral misalignment of bolts or studs and to also compen
sate for angular misalignment of the axes of such bolts or
studs. Any desired number of nut assemblies may be
provided in the channel member in order to accommodate
the desired number of bolts or studs and the device is ap
plied and utilized in the same manner as conventional
gang-channel fastening devices.
A single or anchor nut assembly constructed in accord
ance with this invention and designed to compensate for
lateral, as well as angular misalignment is shown in FIGS.
12 to 23 and this form of the invention may well include
a base plate 32, a base element 33, a nut element 34, a
basket element 35 and a clip element 36.
ment 34 with respect to the basket element 35 upon
initial engagement of a bolt with the nut element 34.
As shown in FIGS. 12 to 16, the base element 33 is
positioned on the base plate 32 with the bore 40 in
25
30
35
40
the base element 33 in substantial alignment with the
aperture 37 in the base plate 32 and the nut element 34
is disposed on the base element 33 with the threaded
bore 43 substantially in alignment with the bore 40 in
the base element 33 and the aperture 37 in the base
plate 32. The clip element 36 is positioned over the
nut element 34 with the ?anges 56 extending down
wardly and in engagement with the upper surface of
the downwardly and outwardly extending ?ange 44 on
the nut element 34 and with the lugs 55 on the clip
element 36 extending upwardly. The basket element 35
is positioned over the entire assembly with the ears 47
of the basket element 35 engaging the upper surface of
the base plate 32 and with the apertures 48 substantially
in alignment with the holes 38 in the base plate 32.
The diametrically disposed ears 45 on the nut element 34
extend through the slots, 53 in the legs 49 of the basket
element 35 and the upwardly extending lugs 55 on the
clip element 36 engage the side edges 57 of the central
portion 50 of the basket element 35, as best shown in
FIGS. 13 and 16. In order to secure the assembly to
gether as a unit, the bendable tabs 39 on the base plate
32 are bent upwardly and over the ears 47 on the basket
element 35, as best shown in FIGS. 12, 13 and 15 and
as a result thereof, the device provides a complete unitary
assembly which may be conveniently attached to any
desired structure by studs or other screw threaded fasten
ing means extending through the apertures 48 in the
As best shown in FIG. 17, the base plate 32 is elongated
basket element 35 and the holes 38 in the base plate 32.
and generally rectangular in con?guration, this plate be
The oppositely extending cars 45 on the nut element
ing provided in the central portion with an aperture 37 50
34 extending through the slots 53 in the legs 49 of the
and adjacent the opposite ends with fastening holes 38.
basket element 35 prevent rotation of the nut element
Also provided on opposite edges of the base plate 32 are
34, but at the same time, permit lateral shifting of the
bendable tabs 39, the purpose of which will be presently
nut element 34 and base element 33 and also permit
described.
Disposed on the base plate 32 is the base element 33 55 angular movement of the nut element 34 with relation
to the base element 33 in order to compensate for
which comprises a thimble or sleeve-like member having
angular misalignment of the axis of the stud or other
a longitudinal bore 40 disposed substantially in alignment
screw threaded fastening means engaging the nut 34.
with the aperture 37 in the base plate 32 and the base ele
It will be obvious to those skilled in the art that various
ment 33 is provided with an annular ?ange 41 formed
changes may be made in the invention without depart
at the upper side to provide a spherical or arcuate bearing
ing from the spirit and scope thereof and therefore the
surface 42. The nut element 34 is provided with an axial
invention is not limited by that which is shown in the
threaded bore 43 and the nut element 34 terminates at
drawings and described in the specification, but only as
the lower portion thereof in an outwardly and down
indicated in the appended claims.
wardly extending ?ange 44 having diametrically disposed
What is claimed is:
outwardly extending cars 45. The threaded bore 43 in 65
1. A gang-channel fastening device comprising in com.»
the nut element 34 terminates at the lower end in a
bination
an elongated channel member having a web,
spherical or arcuate recess 46 complementary to the
sidewalls, inturned overhanging edge ?anges on said
sidewalls and a plurality of longitudinally spaced aper
70 tures in said web, a plurality of nut assemblies disposed
with the threaded bore 43 therein substantially in align
in said channel member for longitudinal sliding move
ment with the bore 40 of the base element 33 and the nut
ment, each assembly being substantially in alignment with
element 34 is supported by engagement of the spherical
an aperture in said web and comprising a base element
surface 42 on the base element 33 with the spherical recess
with the lower end engaging the inner surface of said
46 of the nut element 34.
75 web. an axial bore in said base element, an annular ?ange
arcuate or spherical surface 42 on the base element 33
and as shown in FIG. 14, the nut element 34 is disposed
3,020,946"
6
from the ?anges on said clip member to limit longitudi
nal movement of said nut assembly in said channel
on said base element providing an upwardly facing con
vex spherical bearing surface, a nut element having an
axial threaded bore, said threaded bore terminating at the
lower end in a downwardly opening recess having a
member-
-
3. A gang-channel fastening device comprising in com
bination an elongated channel member having a web,
sidewalls, inturned overhanging edge ?anges on said side
walls and a plurality of longitudinally spaced apertures
in said web, a plurality of nut assemblies disposed in said
channel member for longitudinal sliding movement, each
assembly being substantially in alignment with an aper
ture in said web and comprising a base element with the
lower end engaging the inner surface of said web, an axial
concave spherical surface engaging said bearing surface
to support said nut element thereon and permit angular
movement of said nut element with respect to said base
element, an annular ?ange on said nut element having an
outwardly and downwardly inclined upper surface, dia
metrically disposed outwardly extending ears on said
last named ?ange, a clip element for retaining said nut
element and said base element in said channel member
and for preventing rotation of said nut element with
bore in said base element, an upwardly facing convex
spherical bearing surface on said base element, a nut ele
prising a generally rectangular web portion, downwardly 15 ment having an axial threaded bore, said threaded bore
terminating at the lower end in a downwardly opening
extending ?anges on opposite end edges of said Web por
recess having a concave spherical surface engaging said
tion, an aperture in said web portion of less diameter
bearing surface to support said nut element thereon and
than the annular ?ange on said nut element but of
permit angular movement of said nut element with respect
greater diameter than said nut element above the annular
to said base element, an annular ?ange on said nut ele
?ange thereon and vertical slots in said downwardly ex
ment having an outwardly and downwarddly inclined
tending ?anges, whereby with said clip element disposed
upper surface, diametrically disposed outwardly extending
in said channel member below said inturned ?anges with
ears on said last named ?ange, a clip element for re
the portion of said nut element above the annular ?ange
taining said nut element and said base element in said
thereon projecting through the aperture in said clip
element and with said ears received in said slots, said 25 channel member and for preventing rotation of said nut
element with respect to said channel member, said clip
nut element and said base element will be retained in said
element comprising a generally rectangular web portion,
channel member with said nut element retained against
downwardly extending ?anges on opposite end edges of
rotation with respect to said channel member but per
said web portion, an aperture in said web portion of less
mitting angular movement of said nut element with re
spect to said base element and channel member and 30 diameter than the annular ?ange on said nut element but
of greater diameter than said nut element above the an
upwardly projecting tabs on the web of said channel
nular ?ange thereon and vertical slots in said downwardly
member spaced from the ?anges on said clip member to
extending ?anges, whereby with said clip element dis
limit longitudinal movement of said nut assembly in said
posed in said channel member below said inturned ?anges
channel member.
2. A gang-channel fastening device comprising in com 35 with the portion of said nut element above the annular
?ange thereon projecting through the aperture in said
bination an elongated channel member having a web,
clip element and with said ears received in said slots, said
sidewalls, inturned overhanging edge ?anges on said
nut element and said base element will be retained in said
sidewalls and a plurality of longitudinally spaced aper
channel member with said nut element retained against
tures in said web, a plurality of nut assemblies disposed
in said channel member for longitudinal sliding move 40 rotation with respect to said channel member but per
mitting angular movement of said nut element with re
ment, each assembly being substantially in alignment
spect to said base element and channel member and means
with an aperture in said web and comprising a base ele
on said channel member spaced from the ?anges on said
ment with the lower end engaging the inner surface
clip member to limit longitudinal movement of said nut
of said web, an axial bore in said base element, an
annular ?ange on said base element providing an up 45 assembly in said channel member.
4. A gang channel fastening device comprising in com
wardly facing convex spherical bearing surface, a nut
bination an elongated channel member having a web, side
element having an axial threaded bore, said threaded bore
walls, inturned overhanging edge ?anges on said sidewalls
terminating at the lower end in a downwardly opening
and a plurality of longitudinally spaced apertures in said
recess having a concave spherical surface engaging said
bearing surface to support said nut element thereon and 50 web, a plurality of nut assemblies disposed in said ‘chan
nel member for longitudinal sliding movement, each as
permit angular movement of said nut element with re
sembly being substantially in alignment with an aperture
spect to said base element, an annular ?ange on said
in
said web and comprising a base element with the lower
nut element having an outwardly and downwardly inclined
end engaging the inner surface of said web, an axial bore
upper surface, diametrically disposed outwardly extend
ing ears on said last named ?ange, a clip element for 55 in said base element, an upwardly facing convex spherical
bearing surface on said base element, a nut element hav
retaining said nut element and said base element in said
ing an axial threaded bore, said threaded bore terminating
channel member and for preventing rotation of said nut
at the lower end in a downwardly opening recess having a
element with respect to said channel member, said clip
respect to said channel member, said clip element com
n
element comprising a generally rectangular web portion,
downwardly extending ?anges on opposite end edges of
said web portion, an aperture in said web portion of
less diameter than the annular ?ange on said nut element
but of greater diameter than said nut element above the
annular ?ange thereon and vertical slots in said down
concave spherical surface engaging said bearing surface
to support said nut element thereon and permit angular
60 movement of said nut element with respect to said base
element, an annular ?ange on said nut element, diametri
cally disposed outwardly extending ears on said last named
?ange, a clip element for retaining said nut element and
wardly extending ?anges, whereby with said clip element 65 said base element in said channel member and for pre
venting rotation of said nut element with respect to said
disposed in said channel member below said inturned
channel member, said clip element comprising a generally
?anges with the portion of said nut element above said
annular ?ange thereon projecting through the aperture
rectangular web portion, downwardly extending ?anges on
retained
member
element
member
element above the annular ?ange thereon and vertical
slots in said downwardly extending ?anges, whereby with
said clip element disposed in said channel member below
said inturned ?anges with the portion of said nut element
opposite end edges of said web portion, an aperture in
in said clip element and with said ears received in said
slots, said nut element and said base element will be 70 said web portion of less diameter than the annular ?ange
on said nut element but of greater diameter than said nut
retained in said channel member with said nut element
against rotation with respect to said channel
but permitting angular movement of said nut
with respect to said base element and channel
and means on said channel member spaced 75
3,020,946
7
above the annular ?ange thereon projecting through the
aperture in said clip element and with said ears received
in said slots, said nut element and said base element will
be retained in said channel member with said nut element
8
an aperture in said web portion for loosely receiving the
upper portion of said nut element, slots in said legs for
receiving the ears on said nut element to prevent rotation
of said nut element with respect to said basket element and,
retained against rotation with respect to said channel mem
ber but permitting angular movement of said nut element
with respect to said base element and channel member
said base plate and a clip member received over the
upper portion of said nut element between said web and
channel member, said clip element comprising a generally
rectangular web portion, downwardly extending ?anges on
opposite end edges of said web portion, an aperture in
said web portion of less diameter than the annular ?ange
web portion, downwardly extending spaced legs on the op
posite ends of said web portion, outwardly projecting ears
on the lower ends of said legs engaging the upper surface
element above the annular ?ange thereon and slots in
serving to secure said basket element to said base plate,
an aperture in said web portion for loosely receiving the
upper portion of said nut element and slots in said legs
the inclined upper surface on said nut element, said clip
member having edge lugs engaging the side edges of said
and means on said channel member spaced from the
web to prevent rotation of said clip member with respect
?anges on said clip member to limit longitudinal move
ment of said nut assembly in said channel member.
10 to, said basket element.
5. A gang-channel fastening device comprising in com
7. An anchor nut assembly comprising a generally rec
bination an elongated channel member having a web, side
tangular base plate having a central aperture, fastening
walls and a plurality of longitudinally spaced apertures
holes adjacent opposite ends and bendable tabs on op
in said web, a plurality of nut assemblies disposed in said
posite edges, a base element having an axial bore and
channel member for longitudinal sliding movement, each 15 with the lower end engaging the upper surface of said base
assembly being substantially in alignment with an aperture
plate, an annular ?ange on said base element providing an
in said web and comprising a base element with the lower
upwardly convex facing spherical bearing surface, a nut
end engaging the inner surface of said web, an axial bore
element having an axially threaded bore, said threaded
in said base element, an upwardly facing convex spherical
bore terminating at the lower end in a downwardly open
bearing surface on said base element, a nut element hav
ing recess having a concave spherical surface engaging
ing an axially threaded bore, said threaded bore termi
said bearing surface to support said nut element thereon
nating at the lower end in a downwardly opening recess
and permit angular movement of said nut element with
having a concave spherical surface engaging said bearing
respect to said base element, an annular ?ange on said nut
surface to support said nut element thereon and permit
element having an outwardly and downwardly inclined
angular movement of said nut element with respect to said 25 upper surface, diametrically disposed outwardly extend
base element, an annular ?ange on said nut element, dia
ing ears on said last named ?ange, a basket element for re
metrically disposed outwardly extending ears on said
taining said nut element and said base element on said
?ange, a clip element for retaining said nut element and
base plate and for preventing rotation of said nut element
said base element in said channel member and for pre*
with respect to said base plate, said basket element com
venting rotation of said nut element with respect to said 30 prising a generally U-shaped member having a central
of said base plate, apertures in said last named ears in
on said nut element but of greater diameter than said nut 35 alignment with the holes in said base plate, said tabs
said downwardly extending ?anges, whereby with said clip
element disposed in said channel member with the por
tion of said nut element above the annular ?ange thereon
projecting through the aperture in said clip element and
with said ears received in said slots, said nut element will
be retained against rotation with respect to said channel
member but permitting angular movement of said nut ele
ment with respect to said base element and said channel
member, means on said channel member engaging said
clip member to retain said nut assembly in said channel
member and means on said channel member spaced from
the ?anges on said clip member to limit longitudinal
movement of said nut assembly in said channel member.
6. An anchor nut assembly comprising a generally rec
for receiving the ears on said nut element to prevent ro
tation of said nut element with respect to said basket ele
ment and said base plate.
8. An anchor nut assembly comprising a generally rec
tangular base plate having a central aperture, fastening
holes adjacent opposite ends and bendable tabs on op
posite edges, a base element having an axial bore and with
the lower end engaging the upper surface of said base
plate, an upwardly facing convex spherical bearing sur
face on said base element, a nut element having an axially
threaded bore, said threaded bore terminating at the lower
end in a downwardly opening recess having a concave
tangular base plate having a central aperture, fastening 50 spherical surface engaging said bearing surface to support
holes adjacent opposite ends and bendable tabs on op
said nut element thereon and permit angular movement
posite edges, a base element having an axial bore and with
of said nut element with respect to said base element, an
the lower end engaging the upper surface of said base
annular ?ange on said nut element having an outwardly
plate, an annular ?ange on said base element providing
and downwardly inclined upper surface, diametrically dis
an upwardly facing convex spherical bearing surface, a nut 55 posed outwardly extending ears on said ?ange, a basket
element having an axial threaded bore, said threaded bore
element for retaining said nut element and base element
terminating at the lower end in a downwardly opening re
on said base plate and for preventing rotation of said nut
cess having a concave spherical surface engaging said
element with respect to said base plate, said basket ele
bearing surface to support said nut element thereon and
ment comprising a generally U-shaped member having a
permit angular movement of said nut element with re
central web portion, downwardly extending spaced legs
spect to said base element, an annular ?ange on said nut
on the opposite ends of said web portion, outwardly pro
element having an outwardly and downwardly inclined
jecting ears on the lower ends of said legs engaging the
upper surface, diametrically disposed outwardly extend
upper surface of said base plate, apertures in said last
ing ears on said last named ?ange, a basket element for
named ears in alignment with the holes in said base plate,
65
retaining said nut element and said base element on said
said tabs serving to secure said basket element to said
base plate and for preventing rotation of said nut element
base plate, an aperture in said web portion for loosely re
with respect to said base plate, said basket element com
ceiving the upper portion of said nut element and slots in
prising a generally U-shaped member having a central
said legs for receiving the ears on said nut element to pre
web portion, downwardly extending spaced legs on the
vent rotation of said nut element with respect to said bas
opposite ends of said web portion, outwardly projecting
ket element and base plate.
ears on the lower ends of said legs engaging the upper
9. An anchor nut assembly comprising a generally
surface of said base plate, apertures in said last named ears
rectangular base plate having a central aperture, fastening
in alignment with the holes in said base plate, said tabs
holes adjacent opposite ends and bendable tabs on oppo
serving to secure said basket element to said base plate,
site edges, a base element having an axial bore and with
3,020,940
9
10
the lower end engaging the upper surfacerof said base
plate, an upwardly facing convex spherical bearing sur
at the lower end in a downwardly opening recess having
a concave spherical surface engaging said bearing sur
face to support said nut element thereon and permit
angular movement of said nut element with respect to
said base element, an annular ?ange on said nut ele~
face on said base element, a nut element having an axially
threaded bore, said threaded bore terminating at the lower
end in a downwardly opening recess having a concave
spherical surface engaging said bearing surface to sup
port said nut element thereon and permit angular move
ment of said nut element with respect to said base element,
nient, diametrically disposed outwardly extending ears'
on said flange, a basket element for retaining said nut
element and base element on said base plate and for
preventing rotation of said nut element with respect to
an annular ?ange on said nut element, diametrically dis
posed outwardly extending ears on said ?ange, a basket 10 said base plate, said basket element comprising a gen—
erally U-shaped member having a central, web portion,
element for retaining said nut element and said base ele—
downwardly extending spaced legs on the opposite ends
ment on said base plate and for preventing rotation of said
of said web portion, outwardly projecting ears on the
nut element with respect to said base plate, said basket
lower ends of said legs engaging the upper surface of
element comprising a generally U-shaped member having
a central web portion, downwardly extending spaced legs 15 said base plate, said tabs serving to secure said basket
element to said base plate, an aperture in said web por
on the opposite ends of said web portion, outwardly pro
tion for loosely receiving the upper portion of said nut
jecting ears on the lower ends of said legs engaging the
element and slots in said legs for receiving the ears on
upper surface of said base plate, apertures in said last
said nut element to prevent rotation of said nut element
named ears in alignment with the holes in said base plate,
with respect to said basket element and said base plate.
said tabs serving to secure said basket element to said base
plate, an aperture in said web portion for loosely receiving
References Cited in the ?le of this patent
the upper portion of said nut element and slots in said legs
UNITED STATES PATENTS
for receiving the ears on said nut element to prevent rota
tion of said nut element with respect to said basket ele
1,412,502
Andrioli ____________ .._ Apr. 11, 1922
25 2,243,923
ment and base plate.
Swanstrom ___________ __ June 3, 1941
10. An anchor nut assembly comprising a generally
2,249,923
Whi-tcombe ________ .. July 22, 1941
rectangular base plate having a central aperture, fasten~
2,413,669
Whitcombe ________ __ Dec. 31, 1946
ing holes adjacent opposite ends and bendable tabs on
2,770,161
Schutte ____________ __ Nov. 13, 1956
opposite edges, a base element having an axial bore and
with the lower end engaging the upper surface of said 30
base plate, an upwardly facing convex spherical bear
ing surface on said base element, a nut element having
an axial threaded bore, said threaded bore terminating
2,820,499‘
Schaaf _____________ __ Jan. 21,
1958
FOREIGN PATENTS
129,513
Great Britain ________ __ July 17, 1919
599,362
Great Britain ________ __ Mar. 10,
1948
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