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Патент USA US2106672

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Jan. 25, 1938.
H. woLLNER
2,106,672
` UNIVERSAL JOINT _MECHANISM
_
Filed May 15, 1955
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JNVENTOR.
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Jan. 25, 193s.
H, WOLLNER»
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2,106,672]
UNIVERSAL JOINT MECHANISM
Filed Mày l5, 1955
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INVENTOR.
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A TTORNEYS.
Jan. 25, 193.8.
H. WQLLNER
`
_
2,106,672
UNIVERSAL JOINT MÉCHANISM
Filed >May 15; 1955
:s sheets-sheet’ s '
.
v
JNVENTOR.
Hays Wo ¿[7762?
BY
M
'
l
¿ma?
ATTORNEYS. _
.
2,106,672
Patented Jan: 25, 1938
UNITED STATES PATENT OFFICE
mms wanner, Detroit, Mich., assign“ to una
versal Products Co., Inc., a corporation of
Delaware
Application May 15, 1935, Serial No. 21,516
l 13 Claims.
The present invention relates to universal
(Cl. (il-»21.)
Fig. 1_ is a view in side elevation,r partly in sec
joints, and particularly to universal joints of the
tion, of a double universal joint >embodying the
so-called “double” type, in which the rates of
rotation of two connected sections of shafting are
present invention;
.
.
Fig. 2 is a view, with parts broken away, of a
substantially uniform with respect to each other. section taken on the line 2-2of Fig. l;
Fig. 3 is a sectional view taken on the line
In universal joint constructions of the general
.
type to which the present invention relates, each 3-3 -of Fig. 1; ,_
Fig. 4 is a sectional view taken on the line
of two cooperating shaft sections is connected
to an intermediate coupling member by single . >I---4 of Fig. 1;
Fig. 5 is- a view in side elevation, partly in 10
universal joint
In order to cause
- angular displacements of either shaft section
with respect- tothe coupling to be substantially
duplicated by the other shaft section, the inner
section, of a modification of the present inven
tion;
_
"
‘
Fig. 6 is a partial sectional view taken on the
ends of the shaft sections are ordinarily con
line 6--5 of Fig. 5;
nected together by a compensating member
,which is movable with respect,A toy the coupling.
In the embodiments of the above general ar
rangement with which the present applicant is
aware, the couplings yhave been -constructed to de-'
fine the paths of movement of the associated
Fig. 'I is a partial-sectional view showing a
modification ofthe arrangement of Fig. 6; .
Fig. 8 is a view in side elevation, partly in
compensating members. This arrangement may
be caused to produce strict uniformity between
the rates of rotation of the cooperating shaft
sections, `but is objectionable in that it involves
>the use of both a compensating member, and a.
-
-
_
_
section, of a second modification of the present
invention;y
_
`
- Fig. 9 is a view, partly in
section, taken on the 20
line 9-9 of Eig. 8; .'
Fig. 10 is a view in elevation _of 'an end plate
which may be used with the modifications shown'
in Figs. 8 and 9. and
'
-
'
'
.
Fig. 11 is a partial sectional view of a Imodifi 2a
somewhat complicated and expensive coupling.
cation of the arrangement shown in Fig. 9.
In accordance with the present invention, a
separate compensating member is unnecessaryg
and, in addition to the elimination of this ele~
Referring to Figs. 1, 2 and 4, I and 2 represent>
shaft sections, ’either of which may be regarded
as the driving member. >Shafts I and _2 are each
connected vto a coupling I5 through members
30. ment, the construction of the coupling may cor
1.5,
respondingly be simplified. In lthe illustrated , which form single universal joints individual to‘
embodiments of the present invention, the inner
each shaft. The inner ends of -shafts I and 2 v
ends of the cooperating shaft sections are formed
with cooperating engaging surfaces, so con
are further »connected together so' that angular
displacements of either shaft I or 2 with respect
to coupling I5 are substantially duplicated by the
_structed that <angular displacement of either
shaft with respect to the coupling produces a.
substantially equal angular displacement of the
other shaft section.
The principal object of the present invention,
other.
-
‘
_
'
I
‘
'
As best shown in Fig. 4., the portion 3 of shaft
I is provided with two transverse openings 4 and
5. ' Opening ‘receives a pin 8. the ends of which »
are journaled in roller bearing assemblies, com'
so-called “double"` type, in which compensating _prising rollers 1 and'spheric'al sectoral. Retain- `
ing buttons, each of which present one arcuate
angular displacements» of the shafts.are intro
duced by the form of .interconnection between ~ surface 9, in- Fig. tand a v'second arcuate surface
accordingly, is to provide a universal joint of the
the ends of the cooperating shaft sections. It is
l0, il; Fie'. l, are -journaled‘ in recesses cut into
alsof an object of the present invention to im»
prove and simplify the general 'form and ar
the ends of pin-'8, and serve-to maintain rollers 45
rangement of the parts for universal joints. H It
is also an object of the present invention to pro
vide a universal ‘joint ofthe double typeI which
» is simple in construction and which is capable of
1 in the iliustratedposition. Surfaces- 8 and 9
are concentric-.with portions Il' ofI coupling I5,l
and are somewhat .loosely„iournaled" therein.
Surface Il is concentric with the axis of pin I'I,
described below.
.
4
.
'
The other opening 5 formed in shaft I receives
Other objects and advantages of vthe Present in-e pin ~I_I, a'centralball section I2 of which is
vention appear in the followi ng description and journaled? in an vopening Il formed in pin- 6 and
the' ends -_of which are journaled in coupling I!
inëthe appended claims.
_atpointii-y I0. The ends of openings 5 and Il
- In the drawings:
economical and ready manufacture and assembly».
t:
2
2,106,672
are somewhat enlarged to permit a lcertain
amount of rotation of shaft I and pin 4, about
the axis of pin 6.
~ '
If shaft I is displaced in the plane of the
opening into which pin 40 is fitted. The ends of
pin 49 are supported in coupling 4| in substan
tially the manner described with reference to
Figs. l, 2, and 4, with the exception that rollers
paper, referring to Fig. 2, rotation is had about -‘ 42vand -members 43 are maintained in place'on.
the axis of pin 6.-displaced in the pin 49 by means of retaining rings 44, which fit
plane of the.papeg,„withírefexfence<to Fig. 1, ro
into annular recesses 45 formed in the end of ,
tation is had'aoout’pinîftisas an axis. 11n this
event, pin 6 also rotates about pin II. Portions
10 I4 of coupling I5 present linearsurfaces, circu
lar in cross section,.so that as pin 6 rotates about
pin II, members 8 are caused >to move somewhat
nearer the ends of .pin 6. It will be'noted that
the assembly of members 9 and 9 for movement
15 axially of pin 6 permits the cylinden-like con
struction of portions I4, and so simplifies the
manufacture of coupling I5.
/
' _l
The corresponding elements associated with
20
shaft section 2 are as described with reference
to those associated with shaft section I.
Referring again to Figs. 1„ 2, and 3, shaft sec
tion I terminates in 'a trunnion I6 upon which
a spherical sector I9 is rotatably mounted.
Trunnion I9 is providedswi'th an annular groove
25 20 at the end thereof which receives a locking
ring 2I provided to secure sector I9 in place.
A segmented member 22, hallowed out to form a
socket for sector I9, is slidably mounted 4in a
" recess 23 formed in the end of a shaft 2.
30
Because of the just described ball and socket
>connection between the ends of shaft sections
I and 2, any angular displacement of either shaft
Referring to Fig. 6, the two faces of section 3 which are parallel to the plane of Fig. 5, are 10
'finished as spherical sectors 46 which are concentric with the midpoint of the axis of the pin
40. Members 41, attached to coupling 4I, are
hollowediout to form cooperating surfaces for
members 46.
'
’
i
With this arrangement, if shaft I or shaft‘2
is displaced in the plane of the paper, referring
toFig. 5, surfaces 46 rotatewith respect to their
associated surfaces 41. This action rotates pin`
49 about an axis perpendicular to its own axis, 20
in response to which the members 43 move as
described in connection with Figs. 1, 2,- and 4, and
assume positions slightly nearer the ends of pin
40. If shaft I is displaced in a plane perpendic
ular to the .plane of the paper, referring to Fig.
5, pin.40 rotates in its bearings 42 and 49, and a
sliding movement occurs between surfaces 46 and
4
.
'
Corresponding parts associated with shaft 2
are correspondingly arranged.
In the embodiment shown in Figs. 5 and l6, the
ends of shafts I and 2 may be connected .together
section is accompanied by a substantially equal by means of a ball and socket unit, as described
displacement of the other shaft section. In the in connection with Figs. 1, 2, and 4. A modified
35 course of any such displacement, member I9 ro
form of ball and socket unit is, however, illus
tates in socket 22, and socket 22 moves axially trated in Figs. 5 and 6, and comprises a ball 50
of shaft section 2. Accordingly, although under formed at the end of shaft I, which is engaged
conditions of displacement of the shafts with by a ball bearing ring comprising balls 5I and
respect to coupling I5, the rotation of coupling retaining, ring 52. /The inner surface of- ring
I5 is not uniform with respect to the rotation ¿ 52 is arcuate- and conforms to the curvature of
of the shafts, the shafts rotate at substantially ball 50. Ring 52 may be slidably ñtted into ~a
the same rates.
circumferential recess 53 formed -in the end of»
It will be noted that the ball and socket con
shaft 2, or alternatively, ring 52 may be tightly>
nection between shafts I and 2 moves freely ñtted, and- balls 5I mounted loosely enough to
within coupling I5 but does not engage it. Ac
permit lball 5I) to m'ove axially of ring 52. The
cordingly, the inner surfaces of housing I5 need region marked 54 is preferably filled with a lubri 45
not be formed to provide guiding surfaces for> cating packing.
'
such connection. This arrangement is advan
The members 41 associated with both shafts
tageous in that it simplifies the manufacture of ' I and 2 may be formed of a single piece of metal,
the assembly.
.
"
,
Coupling I5 is enclosed by an outer shell 24,
-but preferably are formed of separate pieces, as` 50
illustrated in Fig. 6, suitable spacers 48 being
which is formed o_f two similar cylinderlike sec- ` added to properly locate them with respect to
tions, the outer ends of which are turned in at
21. The other ends of the sections rest upon
their cooperating surfaces. As illustrated in Fig.
6, \a cap screw 49 maybe employed to‘ attach
55 raised portions 25 on coupling I5 (Fig. 4')` and . the assembly comprising members 41 and 48 to
55
abut a shoulder 26 which extends outwardlyl - the coupling 4I.
from portions 25. Packing members 26 are pro
vided adJacent the ends of coupling I5 for en
Referring to Fig. '1, elements 41 may be re
placed by two roller bearings, such as 69, fitted
gagement by the` respective shell sections. Clamp into recesses 6I cut into the face of a single sup
60 29, provided Ato secure the shell sections in place.
porting member 62, attached to coupling 4I by
"isvformed as a channel, with` portions of one of ’ cap> screw 49.
.
the vertical legs thereof cut away, leaving' a plu
_rality of spaced lugs 3l, which are bent out
wardly, as indicated in dotted- lines, to permit the
6.5 clip to be slipped over the end one shell section.
When the two shell sections are positioned in
_assembledrelatiom the lugs 20 are bent inward
ly `as shown in full lines. Flexible boots 32, pref
erably formed of leather, are attached to the
70 shells at points 3l and to shafts I and 2 at
' points u.
Referring to Figs. 5 and @,«amodiflcation is
illustrated in accordance with which pin II (of`
Figs. 1, 2, and 4) rmay be eliminated. Referring
75 to
5, shaft I> is providedY with a transverse
tol
As described in connection with Figs. 1, 2, 3,
and 4, coupling 4I of Figs. 5, 6 and 7 is prefer
ably Provided with outer shells 69, which may
be connected together by clips 64, and >with 65
boots 65.
’
,
‘
Referring to Figs. 8 and' 9, a construction is
illustrated in which the shaft sections I and 2
are `fixed longitudinally of »they coupling, partly
by end plates and- lpartly by cup-like portions 70
of the outer enclosing shell. Pin 10 is ñtted into
an opening ‘1I formed -in the end of shaft sec
tion I, and is journaled in coupling 12 in the
manner described in connection with Figs. 1, 2,
land 4., by means of buttons 13 and roller bear-` 75
3
2,106,672
shaft; a longitudinally extending coupling an
gularly displaceable relative to said shaft; and
means for universally connecting said shaft to
said,coupling comprising a pair of pins
ssed
ing structure comprisingrollers 14 and spherical
sectors 15. The corresponding parts associated
with top4 section 2 are correspondingly arranged.
Referring to Fig. 9, the ends of shafts I- and
through said shaft with their axes normal .to
2 are each formed as spherical sectors 16. vSur
faces 11 formed on end plates 18 form socket-like
each other, one of said pins being ljourn'aled in
said coupling to ilx said shaft longitudinally of
said coupling, and the other of said pins being
journals for sectors 16, and prevent longitudinal
outward movement of -shafts I and 2 with re
disposed to _engage said coupling at any of a
spect to coupling 1.9. End plates 18 are prefer
10 ably attached to coupling 19 by bolts 88, passed
through openings 8I.
l
plurality of points therealong in accordance with 10
the angle of displacement between said coupling
and said shaft to cause rotation of said coupling
'
Coupling 19 is surrounded by two duplicate
in response to rotation of said shaft.
outer shells 82 of cylinder-like -form, which are
ends of the latter.
pair of shafts; -alongitudinally extending cou 15
Ends 86 of shells 82 are
_ cupped, concentrically with the midpoint of the
axis of pin 10. Circular openings in end sec- y
20 tions 86, bounded by surfaces 81, permit angular
displacement of shafts I and 2 with respect to
coupling 19.
,
Cup-like end sections 88, which prevent longi
tudinal inward movement of shafts I and 2 with
between said -coupling and the associated shaft
to cause rotation of said coupling in response to
rotation of said shaft; and means for pivotally
interconnecting the ends of said shafts.
89 formed on sections 86, and are provided with
recesses 90 to receive packing rings 9|. Cylin
der-like portions 92 of end sections 88 are ñtted
3. Universal joint mechanism comprising a'
section of shafting having two openings extend
30 upon cooperating shoulders 93 on shafts I and 2.
'I‘he simplified form of interconnection ibe
tween the inner ends of shafts I and 2 comprises
ing therethrough transversely to the axis of said '
section and intersecting at substantially said
axis; a longitudinally extending coupling angu-‘
larly displaceable relative to said shaft section, 35
a pin passing through one fof saidl openings and
having its ends secured in said-coupling to fix
said section longitudinally of said coupling;v and
a sphere 95 formedV atthe inner end of shaft
I which is slidably and rotatably fitted into a
recess 98 formed at the end of shaft 2. As in
the previously described modifications, this
causes angular displacements of either shaft I
or 2 with respect to coupling 19l to be substan
tially duplicated by the other?
.
pling angularly displaceable relative to said
shafts; a pair of pins individual to each of said
shafts and passed therethrough- with their axes‘
„substantially normal to each other and support
ed in said coupling, one' pin of each pair being 20
adapted to ñxthe associated shaft in placev lon
gitudinally of said coupling, and the other pin
of each pair being adapted to-en'gage said cou
pling lat any of a plurality of points therealong
in accordance with the angle of displacement 25
respect to coupling 19, are concentric >with the
midpoints of the axis of pin 10, engage shoulders
40
,
2-. Universal joint mechanism comprising a
secured together by bolts 84 passed through rims
83, packing members 85 being interposed be
tween shells 82 and coupling 19 ladjacent the
a second pin extending through said other open
ing, the ends whereof are disposed to engage 40
said couplingl at any of a plurality of points
therealong in accordance with the angle of dis
,
In operation, if shafts I and 2 are displaced
in planes perpendicular to the plane of Fig. 8,
pins 10 rotateV about their own axes in the asso
placement between’said coupling and said shaft
ciated roller bearing assemblies; surfaces 16 slide
within the spheroidal surfaces 11 and end sec
section and form a rotative driving connection
between said section and said coupling.
45
4. Universal joint mechanism comprising a
section of shafting having two openings passing
therethrough transversely of the axis of said
section and intersecting at substantially said
45 tions 88 slide along the spheroidal surfaces l86.
If the shafts are displaced in the plane of Fig.
8, surfaces 16 and 86 slide as above mentioned
`along their cooperating surfaces 11 and 86. In
the course of this movement, pins 10 rotate about _,axis; a longitudinally4 extending coupling mem
50 an axis which passes perpendicularly through
ber angularly displaceable relative to saidv shaft
the mid-point of its own axis. In the course of section; a pin passing' through one of said open
this rotation, members 13 and 15 move linearly ings and having its ends secured within said
in the associated coupling portions in the man
coupling to fix said section longitudinally of said
ner described in connection with Figs. v1, 2 and couplingia second pin passing through the> other 55
55 `4. As shown in Figs. :8 and _10, end plates 18 are
of said openings and having its ends disposed to'
provided with recesses 91 to accommodate such engage said coupling at any’ of a plurality of
movement of members 13 and 15.
points therealong in accordance with the angle
Referring to Fig. 11, the journaling function of of displacement between said coupling and said
end sections 88 may alternatively be accom
shaft section to .form a rotativev driving con 60
60
plished by spheroidal bearing surfaces 98 formed
on the interior of coupling 19. With this latter
arrangement, surfaces 98 and 11 operate to posi
nection between said section and said coupling;
one of said pins having a transverse opening
through which the other of said` pins passes.
5. Universal joint mechanism comprising, in
tively locate shafts I-and 2 with respect toI cou
65
pling 19.
.
_
( combination, a 'first shaft section; a second shaft
_
Although specific embodiments of the present
invention have been shown and’described, vari
section; a longitudinally extending housing an
gularly displaceable relative to said shafts and
ous modifications may be made. therein Without adapted to Ireceive the` inner ends of each of
departing from the spirit and scope of the pres
said shafts; means including bearing/surfaces
carried
on each of said shafts and cooperating 70
~ent
invention.'
It
is-to
be
understood,
therefore,
'
70
that the described embodiments -are`to be re
garded in anillustrative and not in alimiting
sense.
What
ing; means interconnecting the inner ends of
.
claimed is.
bearing surfaces formed within said housing for
securing said shaft sections within said hous
_
l
.
75 i 1. Universal, joint mechanism comprising a
said shaft sections so that angular- movement
of one of Asaid shaft sections relative-to said hous 75
4
modera
’ ing is accompanied by angular movements of the housing having a first pair of longitudinal in
other of said shaft sections; and additional '- terior raceway portions formed adjacent one end
means cooperating between each shaft section thereof, and a second pair of longitudinal interior
and said housing for transmitting rotative force raceway portions formed adjacent the other end_
between said housing and the associated shaft thereof; a driver for each shaft section extend
' section.
i118 transversely thereof with its ends slidably re
6. Universal -joint mechanism comprising, in ceived in the raceway portions of the associated
combination, a first shaft section; a second shaft. pair and cooperable therewith to transmit axial
section; a longitudinally extending housing an
10 gularly “displaceable relative to said shafts and
adapted to receive the inner ends of each of said
shafts; means including a pair of transversely
opposite spheroldal bearing surfaces carried on
each of said shafts and cooperating bearing sur
rotative force between said housing and said
shaft sections; means interconnecting the ,inner
ends of said shaft sections so that angular move
ment of one of said shaft sections relative to said
housing is accompanied by angular movement
of the other of said shaft sections; and additional
15 faces formed within said housing for securingV means comprising` opposed spheroidal surfaces
15
said shaft sections within said housing; means formed adjacentgthe end lof each of said shaft
, interconnecting the inner ends of said shaft sec
tions so that angular movement of one of said
shaft sections relative to said housing is accom
20 panied by angular movementA of the other of
said shaft sections; and additional means co
operating between each shaft section and said
housing for transmitting rotative force between
said housing and the associated shaft section,
25 said additional means extending substantially
normal> to a median line connecting said bearing
` surfaces.
7. Universal joint mechanism comprising, in
combination, a first shaft section; a second shaft
30 section; a longitudinally extending housing an
gularly displaceable relative to said shafts and
adapted to receive the inner ends of each of said
shafts; means including a pair of transversely
sections and cooperating surfaces provided in
said housing for cooperating between the asso-.
ciated shaft section and said housing to secure
the shaft sections within said housing.
20
10. Universal joint mechanism comprising, in
combination, a ñrst shaft section; a second shaft
section; a longitudinally extendinghousing an
gularly displaceable relative to said shafts, said
housing having a first pair of longitudinal in 25
terior raceway portions formed adjacent one end
thereof, and a second pair of longitudinal in
terior raceway portions formed adjacent the other
end thereof; a driver for each shaft section ex-^-
tending transversely thereof with its ends slidably
received in the raceway portions of the asso
ciated pair and cooperable therewith to trans-l
mit- axial rotative force between said housing
opposite spheroidal bearing surfaces on each of and said shaft sections; means interconnecting
35 said shafts _and cooperating bearing surfaces 'the inner ends'of said shaft sections so that
formed within said housing_for securing said
angular movement of one of said shaft sections
shaft sections within said housing; means inter
connecting the _inner ends of >said. shaft sections
relative to said housing/’is'accompanied by an
so that angular movement of one of said shaft
tions; a pair of diametrlcally opposed spheroidal
surfaces formed adjacent the end of each of` 40
said shaft sections, and a roller bearing element
40 sections relative to said housing is accompanied
- by ‘angular movement of the other of said shaft
sections; and a pair _of axially parallel trunnions
projecting from'opposite sides of each of said
shaft sections, said spheroidal bearing surfaces
45 lying on opposite sides of the axes of said pairs
of trunnions; and mean deñning raceways with-~
in said housing for receiving said trunnions to
transmit rotative force between said housing and
said shaft sections.
.
8. Universal joint mechanism comprising, in
combination, a first shaft section; a secondshaft
section; a longitudinally extending housing an
gularly displaceable relativeto said shafts, said
housing having a first pair vof longitudinal in
55 terior raceway portions formed adjacent one end
gular movement of the other of said shaft sec
in said housing- for each of said surfaces for co
operating therewith to secure said shaft sections ,within said housing.
-
11.,Universal joint mechanism comprising, in 45
section; a longitudinally extending housing. an
gularly displaceable relative to said shafts and
adapted to receive the inner ends of each of said
combination, a first shaft section ; a second shaft
shafts; means including a pair of transversely
opposite bearing surfaces carried on each of said 50
shafts and cooperating bearing surfaces formed
within said housing and securing said shaft sec
tions against axial movement out of said hous
ing; means- including a supplemental housing
thereof and a second pair of longitudinal interior ‘ member individual to each of said shaft sections
and cooperating between the associated shaft
thereof; adriver for each shaft section extend
section and said housing for securing the asso
ing transversely thereof with its ends slidably ciated shaft section against axial movement into
60 received in the raceway portions «of the asso
said housing; means interconnecting the inner
ciated pair and cooperable therewith to trans
ends of said shaft. sections so that angular move
mit axial rotative force between said housing ment of one of said shaft sections relative to said
and said shaft sections; means interconnecting housing is accompanied by angulanmovement
~ the inner ends of said shaft sections so that an
of the other` of said shaft sections; and additional
guiar movement of one of said shaft sections means cooperating between each shaft section
relative to said housing is accompanied by angular and said housing for transmitting rotative force
movement of the other of said shaft sections; between said housing andthe associated shaft
. raceway portions formed adjacent the other end
and additional means individual‘to each shaft
section vand cooperating between .the associated
70 shaft section and said housing for securing the
_associated shaft section within said housing.
9. Universal joint -mechanism comprising, in l
combination, a ñrst shaft section; a second shaft
section; a longitudinally extending housing an
L75 guiarly displaceable relative to said shafts,- said
section.
.
.
'
‘
12. Universal joint mechanism comprising, in
combination, a first shaft section; a second shaft.
` section; a longitudinally> extending housing an- '
gularly displaceable relative to said shafts, said
housing. having a first >pair of longitudinal in
terlor r^ ceway portions formed adjacent one end
thereof, and'a second pair oflonzitudinal in-4
69
2,166,672
5
terior raceway portions formed adjacent the other ' housing forA securing the associated shaft section
against axial movement into said housing.
end thereof; a driver for each shaft section ex
13. Universal joint mechanism comprising, in
tending transversely thereof with its ends slidably
receivediin the raceway portions of the associated v combination, alongitudinally extending housing;
and second shaft sections angularly dis
pair ‘and cooperable. therewith to transmit axial ,first
rotative force between said housing and said placeablev relative to said housing and having
shaft sections; means interconnecting the inner their inner lends interconnected and received
said housing; said housing having a first
ends of said shaft sections so that angular move . within
pair of longitudinal interior raceway portions
ment of -one of said shaft _sections'relative to formed adjacent one end thereof and a second 10
10 said housing is accompanied by angular move
pair of longitudinal interior raceway portions
> ment of the other of said shaft sections; addi
tional means comprising diametrlcally opposed formed adjacent the other end thereof; a driver
spheroidal surfaces formed adjacent the end of for each shaft section extending transversely
thereof 'with its ends siidabiy received in the.
each of said shaft sections and cooperating sur
faces provided in said housing for cooperating raceway portions of the associated pair and co 15
therewith vto transmit axial rotative
between the associated shaft' section and said operable
housing- to secure the associated shaft section force betweennsaid housing and said shaft sec
against axial movement out of said housing; and tions; and means connecting said shaft sections
to said housing so as to retain said shaft sections
means including a supplemental housing mem
within said housing.
_
ber individual to each shaft 'section and cooperat
HANS WOLLNER»
ing between the associated shaft section and said
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