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Патент USA US2113998

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'April 12,1938,
‘
.
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c. E. SWENSQN
‘UNIVERSAL JOINT
Filed Dec. 9, 193g
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1
2,113,998
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Patented ‘Apr. 12, 1938
2,113,998 ‘1
UNITED ‘STATES PATENT OFFICE '
unwiii??m
‘
Carl E. Swenson, Rockford, Ill.I assignor,‘ by
mesne assignments, to Borg-Warner Corpora
tion-Chicago, 111., a corporation of Illinois
Application December 9, 1932, Serial No.'648,432
2 Claims. (oi. 6~i-—l'i)
'
"
RHSSUED
JUL 9 "1940
?at laces ill provided on the backs of the blocks
I
This invention relatesto an improved trunnion
8. The yokes are milled to provide radial slots“
type universal joint and has special reference to . for‘
reception of radial lugs I! on the blocks, and
one having roller bearings for the trunnions.
are bored on opposite sides of the slots l l to re
In my application, Serial No. 576,249, filed ceive
bolts it which thread in holes in the lugs
5 November 20, 1931, I disclosed a universal joint in it formed on the bearing blocks, whereby to
which each of the trunnion bearings is of unitary clamp the latter to the yokes. The inter?tting
'
construction to facilitate assembling and make
or .repair. . According to that application, the
lugs and slots assume-the load so far as the trans
mission of torque is concerned. Shoulders ii are
10' rollers have reduced cylindrical ends to ilt in an
faces IS on the bearing blocks 8 to assume the
1 for handiness as well as economy in replacement
annular groove in the inner end of. the bearing
provided on-the 'yokes for engagement with sur- 10
load incident to end thrust, the trunnions ‘I being
disposed with the ends thereof arranged to bear
tainer ring pressed into a counterbore in the against end thrust surfaces ll provided on the in
outer end of the bearing. The retainer ring pro- - side of the end walls [8 of the bearing blocks 8. 15
15 vides an annular recess for the. reception oi’ a The bolts II are, therefore, relieved of load‘ due
packing ring to seal the bearing against loss of to end thrust and tom , and serve primarily to
lubricant and to exclude dirt. ‘It is the principal clamp the bearing blocks to the yoke members.
object of the present invention to provide a re
The trunnion bearings instead of being plain
tainer ring so constructed that one end there
Journal bearings, have anti-friction rollers l9
oi.’ projects from/the bearing to form part 01 a dirt which make for easier and smoother operation 20
2° shield, and to provide in connection therewith a and, consequently, more eilicient' power transmis
sleeve pressed on the spider about the base of the sion and‘longer life. These rollers run on the
trunnion and surrounding the projecting end-‘oi 'side
of the trunnions ‘I on the "one hand, and
the ring to complete the dirt shield.
on the other hand have bearing contact with the 25
The invention is illustrated in‘ the" accompany
side wall ll of the cylindrical bearing recess pro
ing drawing, in which—
'7
,
'
vided in the bearing blocks 9. .The rollers have
Figure 1 is a side view of a universal joint made reduced cylindrical ends ir'and ‘22. The inner
in accordance‘with my invention, showing one ends II ilt in an annular channel-shaped groove
trunnion bearing in longitudinal cross-section 23 i’ormed in the end wall ll of the bearing. thus 30
'and another in transverse section; '
_
avoiding the necessity for any separate retainer
Fig; 2 is an enlargement of that portion of Fig
means for the rollers at that end. The-,groove
ure 1 showing the‘ longitudinal ‘section, and
Fig. 3 is a view otthe bearing-parts appearing II is made wider than the‘ diameter of the ends
because it is intended only to serve as are
, in Fig. 2 showing the same in disassembled II
taining recess for the ends of the rollers to keep :35
spaced relation to more clearly illustrate the con
the same from dropping out when the bearing is
3
from the trunnion. In other words, it
The invention is illustrated in connection with removed
not intended to have the ends 2| oi the rollers »
a universal joint constructed somewhat-along the is
bearing support in the groove 23. The outer
lines disclosed in my copending application, Serial ?nd
ends 22‘ ‘of the rollers are retained by means of an 40
40 No. 615,496, ?ied June 6, 1932 issued as Patent No. inturned lipll formed on the‘ sheet metal ring 25‘
1,985,531, December 25, 1934. A pair 01’ yokes or which is pressed into a counterbore 26 provided in
terminal coupling ‘members are shown at l and 5 the outer end of the bearing. , With this con
connected by means of an intermediate transmis
struction it is apparent that each bearing block
sion member 8, often referred to as the spider, with its complement of rollers is a unit which 45
5 the same providing i’our trunnions 1. ninety de
may be removed and replaced with facility, for grees apart. The trunnions are received in hear
ing blocks 8, each yoke being equipped with one inspection, repair or replacement. The ring 25,
and to engage an inturned annular lip on a re
struction.‘
:
‘
'
'
'
,
pair 0! these bearings in diametrically opposed
relation. The spider 5 is usually made hollow to
in addition to serving as a retainer for the rollers,
aiiords the necessary annular recess in the outer
‘end of the bearing l'or reception of a packing ring 50
serve as a central lubricant reservoir from which » 21 of any suitable compressible, resilient, packing
lubricant is conducted to the various; bearings - material, such as cork. The packing ring is en
through radial holes provided in the trunnions ‘I. tered into the retainer ring before the bearing is ,
As described in the aforesaid application, the slipped over the trunnion, and is arranged to be
N yokes are machine iinished for true dynamic
55 ,balance and have smooth‘seats 9 for abutment’ by ‘subjected tova certain amount oi compression 55‘
.2
2,118,998
when the bearing is brought into its ?nal position,
thus serving to seal the bearing against loss of
lubricant or entry 01' dirt.
In accordance with the present invention, the
retainer ring 25 in each of the trunnion bearings
is. adapted to serve not only as a means of retain
ing the rollers l9 and housing the packing ring
27, but also as a part of a dirt shield for the
trunnion bearing. With that object in view, the
10 ring 25 is constructed so that the outer end there
of projects appreciably from the counterbore 26,
I claim:
~
1. '1 universal joint trunnion bearing assembly
comprising a bearing having a cylindrical inner
wall, a trunnion member having spaced' coaxial
walls,_ bearing rollers engaging said bearing wall
‘and the inner of said trunnion member walls and
holding them coaxial, means cooperating with said
bearing for maintaining said rollers in coopera
tive relation to said inner walls, packing means
spaced from the outer of said trunnion member 10
walls and cooperating with said roller maintain
as indicated 'at 28, to form the inner part of the - ing means in providing a seal between said hear
dirt shield. The outer part of the dirt shield is
ing and said inner trunnion wall, said roller
formed by a sleeve 29 projecting outwardly from _,.maintaining means being closely telescoped in
the arm of the spider and encircling the end 28 the outer of said trunnion member walls to shield
15
of the retainer’ring 25. The sleeve is suitably said packing means.
pressed onto the arm of the spider on a reduced
2. A universal joint trunnion bearing assembly
portion 30, with the end thereof brought into comprising a bearing having a cylindrical inner
abutment with the shoulder 3| de?ning the end of wall, a trunnion member having spaced coaxial
20 the reduced portion, so as to locate the sleeve in a walls,‘ bearing rollers engaging said bearing wall
predetermined relation to the bearing and also and‘ the inner of said trunnion member Walls and 20
insure ‘the proper clearance with respect to the holding them coaxial, means cooperating with
retainer ring;
.
In operation, it should be clear that the sleeves
29 will serve to keep out dirt and water, so that
the principal function of the packing rings 21
will be merely that of retaining lubricant. The
fact that the sleeves 29 project outwardly i'rom
the arms of the spider 6 and encircle the project
30 ing ends of the retainer rings,"make's centrifugal
force e?ective in keeping out dirt and water, be
cause any dirt or water getting on the sleeves will
naturally be thrown outwardly and will, there
"fore, have no opportunity to work its way in be
35
tween the sleeves and rings and ewentually into
the bearings.
said bearing for maintaining said rollers in co
operative relation to said inner walls, packing
means spaced from the outer of said trunnion 25
member walls and cooperating with said roller
maintaining means in providing a seal between
said bearing and said inner trunnion wall, said
roller maintaining means being closely telescoped
with the outer of said- trunnion member walls to 30
shield said packing means, the telescoping por
tions being so arranged that the surrounding
portion extends radially outwardly beyond the‘
inner end 01’ surrounded portion.
'
‘ CARL E. SWENSON.
DISCLAIM-ER
2,*1-l3,998.-—Oarl E. Swenson, Rockford, Ill. UNIVERSAL JoIN'r. Patent dated April
12,
1938. Disclaimer ?led December 2, 1938,‘by the assignee,'Borg-Wa,rner
Corporation. I
Hereby disclaims from the scope of both of the claims of said Letters Patent, any
and all universal joints except'those wherein the outer of the trunnion walls mentioned
in said claims isin the form of a_collar separate from and mounted upon a shoulder
formed integrally with the trunnlon, wherein ‘both the packing means and the roller
maintaining means are received in an annular space de?ned between radially opposed
regions of said trunnion walls and wherein said packing means is
inner trunnion wall and under compression in the assembled joint. in contact with the
[O?icz'al Gazette December 20, 1938.]
35
.2
2,118,998
when the bearing is brought into its ?nal position,
thus serving to seal the bearing against loss of
lubricant or entry 01' dirt.
In accordance with the present invention, the
retainer ring 25 in each of the trunnion bearings
is. adapted to serve not only as a means of retain
ing the rollers l9 and housing the packing ring
27, but also as a part of a dirt shield for the
trunnion bearing. With that object in view, the
10 ring 25 is constructed so that the outer end there
of projects appreciably from the counterbore 26,
I claim:
~
1. '1 universal joint trunnion bearing assembly
comprising a bearing having a cylindrical inner
wall, a trunnion member having spaced' coaxial
walls,_ bearing rollers engaging said bearing wall
‘and the inner of said trunnion member walls and
holding them coaxial, means cooperating with said
bearing for maintaining said rollers in coopera
tive relation to said inner walls, packing means
spaced from the outer of said trunnion member 10
walls and cooperating with said roller maintain
as indicated 'at 28, to form the inner part of the - ing means in providing a seal between said hear
dirt shield. The outer part of the dirt shield is
ing and said inner trunnion wall, said roller
formed by a sleeve 29 projecting outwardly from _,.maintaining means being closely telescoped in
the arm of the spider and encircling the end 28 the outer of said trunnion member walls to shield
15
of the retainer’ring 25. The sleeve is suitably said packing means.
pressed onto the arm of the spider on a reduced
2. A universal joint trunnion bearing assembly
portion 30, with the end thereof brought into comprising a bearing having a cylindrical inner
abutment with the shoulder 3| de?ning the end of wall, a trunnion member having spaced coaxial
20 the reduced portion, so as to locate the sleeve in a walls,‘ bearing rollers engaging said bearing wall
predetermined relation to the bearing and also and‘ the inner of said trunnion member Walls and 20
insure ‘the proper clearance with respect to the holding them coaxial, means cooperating with
retainer ring;
.
In operation, it should be clear that the sleeves
29 will serve to keep out dirt and water, so that
the principal function of the packing rings 21
will be merely that of retaining lubricant. The
fact that the sleeves 29 project outwardly i'rom
the arms of the spider 6 and encircle the project
30 ing ends of the retainer rings,"make's centrifugal
force e?ective in keeping out dirt and water, be
cause any dirt or water getting on the sleeves will
naturally be thrown outwardly and will, there
"fore, have no opportunity to work its way in be
35
tween the sleeves and rings and ewentually into
the bearings.
said bearing for maintaining said rollers in co
operative relation to said inner walls, packing
means spaced from the outer of said trunnion 25
member walls and cooperating with said roller
maintaining means in providing a seal between
said bearing and said inner trunnion wall, said
roller maintaining means being closely telescoped
with the outer of said- trunnion member walls to 30
shield said packing means, the telescoping por
tions being so arranged that the surrounding
portion extends radially outwardly beyond the‘
inner end 01’ surrounded portion.
'
‘ CARL E. SWENSON.
DISCLAIM-ER
2,*1-l3,998.-—Oarl E. Swenson, Rockford, Ill. UNIVERSAL JoIN'r. Patent dated April
12,
1938. Disclaimer ?led December 2, 1938,‘by the assignee,'Borg-Wa,rner
Corporation. I
Hereby disclaims from the scope of both of the claims of said Letters Patent, any
and all universal joints except'those wherein the outer of the trunnion walls mentioned
in said claims isin the form of a_collar separate from and mounted upon a shoulder
formed integrally with the trunnlon, wherein ‘both the packing means and the roller
maintaining means are received in an annular space de?ned between radially opposed
regions of said trunnion walls and wherein said packing means is
inner trunnion wall and under compression in the assembled joint. in contact with the
[O?icz'al Gazette December 20, 1938.]
35
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