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Патент USA US2409511

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Oct. 15, 1946.
r 2,409,508
‘Filed March 9, ‘1945
Patented Oct. 15, 1946
Y 1
Edwin August Miller, Fair?eld, Conn.
Application March 9, 1945, Serial No. 581,80!)
2 Claims. (01. 85—-11)
This invention relates to push fasteners, and
more particularly to a sheet-material anchoring
means to be inserted within a bore or passage and
be self-locking when pushed therein and be
adapted as a supporting means for a member
projecting therefrom.
mal and the operated positions, respectively, of
the edges 6 of the ?ns 4 and 5, particularly with
regard to the outstanding mid-portion 'l of each
?n relative to the line 9 of wall interior surface
of the passage Ill’.
.The operation of this preferred form of device
is very simple but e?ective. The normal outside
reach of the ?ns 4 and 5 being greater than the
or passage not extending entirely through the
inside diameter of the passage H!’ of the work
10 piece l?, the device by means of the manually
A further object is to provide an anchoring
held push element 2 is forcibly inserted Within
means to and from which another member may
the passage l0’ so that the ?ns 4 and 5 resist
be attached and detached.
ingly yield inwardly toward one another sur?
With reference to the accompanying drawing
ciently to admit their entrance therein ‘to the
the Figure 1 illustrates in perspective a preferred 15 locked position shown by the Figure 6 wherein,
form of the device; Figure 2 illustrates in perspec
upon any attempted withdrawal of the device
tive a modi?ed form of the device; Figures 3 and
therefrom, the outstanding mid-portion l of the
4 illustrate in perspective views of a further modi
?ns 4 and 5 bite into the wall surface of the pas
?cation, each with parts in a different relative
sage ID’ to positively lock the device in its in
position; Figures 5 and 6 are upright views of the 20 serted position. It is obvious, however, that if an
preferred form of device of which Figure 5 is a
attachment (not illustrated) does not make it
normal representation and the Figure 6 illus
impossible, the U-shaped push element 2 might
trates the device locked. Within a passage provided
be temporarily or otherwise collapsed laterally
by a work-piece shown in cross-section; and the
thereof su?iciently to release the bite of the ?ns
Figures 7 and 8 are diagrammatic presentations 25 4 and 5 from within the passage ID’ as a means
of different positions of the locking elements with
of withdrawal of the device therefrom.
relation to the line of interior Wall surface of pas
The Figure 2 illustrates a slight modi?cation
sage designated by heavy circular line.
of the device. In this form, the base seat I’ in
With more particular reference to the accom
tegrally supports an erect shaft of sheet-material
panying drawing the numeral 1 designates the 30 as the push element 2' having the bore 3" as one
base seats as illustrated by the Figures 1, 5 and 6.
means of attaching another member (not illus
In this preferred form of device the base seats I
trated) thereto. The base seat I’, as in the pre
together integrally support an erect fastener push
ferred form, supports integrally a ?n 5’ in the
element 2 of an inverted U-shape, this push ele
identical form as thatof the ?n 5. The opera
ment 2 not only serves as a means by which the 35 tion of this modi?ed form of device is‘similar
device may be manually pushed and locked with
to that of the preferred form, excepting that the
in a passage but, in its projected relation to the
side edges of the push element 2' cooperate with
passage provides a means by which any attach
the ?n 5' in centering and holding erect the
ment (not illustrated) may be secured thereto.
locked device within a passage intended therefor.
For such attachment the top 3 of the push ele 40 The anchorage of this form of device is absolutely .
ment 2 is provided with the bore 3'. The base
positive, there being no way of Withdrawal.
seats I also integrally support at an obtuse angle
The Figures 3 and 4 illustrate a still further
thereto the relatively divergent and upwardly ex
modi?cation of the device with a base seat I"
tending fins 4 and 5, one upon each side of the
having the bore 3"’ which may be tapped to re
push element 2. The ?ns 4 and 5 have a convex 45 ceive a screw II by which any erect attachment
formation, each presenting an upwardly facing
(not illustrated) may be secured to the base seat
cutting curved edge 6, the outstanding mid-por
I" to be supported thereby as a push element.
tion ‘I of each edge 6 providing the locking ele
The base seat I" supports the ?ns 4" and 5"
ments of the device. The ?ns 4 and 5‘are made
of identical form as 4 and 5, the said Figures 3
adapted to yield to the extent of engaging their
and 4 illustrating the normal and operated posi
corners 8 with opposite sides of the push element
tions, respectively. In locked position the corners
2, but such yielding movement of each ?n 4 and
8’ of the ?ns 4" and 5” engage one‘ another in
5 is met with a strongresistance by reason of the
the event that an attachment (not illustrated)
near rigid quality of the structure of the device.
is not positioned between them. The, operation
The diagrammatic Figures 7 and 8 show the nor 55 of this modi?ed form- of the device is identical
The object of the invention is to provide a per
manent fastening means within a preformed bore
as is possible with all of the forms herein dis
2. A push fastener comprising a sheet-stock
structure having a central body part provided
with that of the preferred form, an attachment
(not illustrated) providing a push element. The
anchorage provided by this form of device is posi—
tive, there being no means for withdrawal unless,
with a base seat; a resistingly yielding and up
wardly extending ?n element supported by said
seat and upon each opposite side of said body
closed, the cut-material edges of the ?ns are
rounded with the intent of producing a device the
anchorage of which is frictional only.
I claim:
1. A push fastener comprising a sheet-stock
part and thus positioned relatively divergent, one
to the other; a convex-preformed upper free end
portion with which each ?n element is provided;
an outer cutting edge of the most far distant
mid-portion of the free end of each of said ?n
structure having a base seat body part, said struc
ture including a resistingly yielding and upwardly
extending ?n element supported by said base
elements; and corners upon either ‘side of said
part at an obtuse angle thereto; a convex-‘pre
formed upper free end portion with which the‘ fine
element is provided; and an outer cutting edge ,_
of the most far distant mid-portion of said free
end of said ?n element.
mid-portions and adapted to engage said body
portion upon the extreme yielding movement of
> ’ said ?n elements.
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