Patent US3631741A successfully refreshed from Google Patents.
US3631741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission
Assignee: Borg Warner Corp
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Filing: 1970-08-07
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Granted: 1972-01-04
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Expires: 1990-08-07
Abstract
Abstract An overdrive transmission adapted to be coupled as an auxiliary transmission to a conventional change speed transmission of an automobile and comprising planetary gearing having a planet gear carrier connected to and driven by the output shaft of the conventional transmission, a ring gear engaging the planet gears and connected to a tailshift driving the automobile wheels, and a sun gear engaging the planet gears and held by a friction brake to provide the overdrive speed ratio. A double-acting roller clutch device is positioned between the output shaft and tail shaft and controllable to directly connect the shafts in either direction of rotation of the shafts to prevent a freewheeling condition or when the brake is applied to provide the overdrive speed ratio, to provide an overrunning connection between the shafts.
Inventors
- 👤 Donald W Kelbel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:52
CPC Classifications
F; F16; F16H; F16H57/00; F16H57/04; F16H57/042; F16H57/0427; F16H3/00; F16H3/44; F16H3/46; F16H3/48; F16H3/52; F16H3/54; F16H57/048; F16H57/0482; F16H61/00; F16H61/02; F16H61/0262; F16H61/0293; F16H2716/00; F16H2716/02; F16H2716/04
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
125 words
In a change speed transmission, the combination of driving and driven shafts, a gear set operatively connected between said shafts and including a pair of rotatable members; means for releasably holding one of said members stationary to provide a reaction element to complete a speed ratio drive between said shafts; a roller clutch device between said shafts and being normally movable into a wedging position with said shafts in one as well as the other direction of rotation of said shafts relative to each other to directly connect said shafts to provide a drive in parallel with said speed ratio drive between said shafts; and control means for preventing said roller clutch device from assuming said wedging positions during establishment of said speed ratio drive.
Claim 2
Dependent Claim
125 words
In a change speed transmission, the combination of driving and driven shafts, a gear set operatively connected between said shafts and including a pair of rotatable members; means for releasably holding one of said members stationary to provide a reaction element to complete a speed ratio drive between said shafts; a roller clutch device between said shafts and being normally movable into a wedging position with said shafts in one as well as the other direction of rotation of said shafts relative to each other to directly connect said shafts to provide a drive in parallel with said speed ratio drive between said shafts; and control means for preventing said roller clutch device from assuming said wedging positions during establishment of said speed ratio drive.
Claim 3
Dependent Claim
29 words
In a change speed transmission, the combination according to claim 1 wherein said gear set comprises planetary gearing, and said reaction element of said gearing is a sun gear.
Claim 4
Dependent Claim
26 words
In a change speed transmission, the combination according to claim 2 wherein said holding means is a friction brake operable to hold said sun gear stationary.
Claim 5
Dependent Claim
49 words
In a change speed transmission the combination according to claim 1 wherein said roller clutch device is provided with an additional nonwedging position between the two wedging positions and said control means is operative to maintain said device in said nonwedging position during establishment of said speed ratio drive.
Claim 6
Dependent Claim
68 words
In a change speed transmission the combination according to claim 1 wherein said roller clutch device includes a pair of members connected to respective shafts and arranged concentrically one within the other, one of said clutch members having a plurality of cam faces and the other clutch member having a cylindrical surface, and rollers engageable with said cam faces and said cylindrical surface to provide said wedging positions.
Claim 7
Dependent Claim
68 words
In a change speed transmission the combination according to claim 1, wherein said roller clutch device includes inner and outer wedging members between said shafts and respectively connected to said shafts, wedging elements between said wedging members, and a cage for said wedging elements, said control means being operative to prevent wedging engagement of said wedging elements with said wedging members during establishment of said speed ratio drive.
Claim 8
Dependent Claim
66 words
In a change speed transmission the combination according to claim 1 wherein said gear set comprises planetary gearing including a ring gear connected to said driven shaft, a sun gear providing said reaction element and rotatable about said drive shaft, planet gears meshing with said sun and ring gears, and a planet gear carrier connected to said driven shaft; said holding means is a friction brake.
Claim 9
Dependent Claim
55 words
In a change speed transmission the combination according to claim 5 including a cage for said rollers, and means for frictionally engaging said cylindrical surface for moving said cage and thereby said rollers from one wedging position to the other wedging position during changes of direction of rotation of said shafts relative to each other.
Claim 10
Dependent Claim
77 words
In a change speed transmission the combination according to claim 5 including a cage for said rollers, and wherein said contrOl means comprises an apertured plate connected to one end of said cage, at least one pin supported for movement axially of said shafts into an aperture of said plate to locate said plate and thereby said cage to position said rollers to prevent wedging engagement of said rollers with said cam faces and said cylindrical surface.
Claim 11
Dependent Claim
39 words
In a change speed transmission the combination according to claim 9 wherein said plate is provided with spaced pockets, friction shoes radially movable in said pockets, and means biasing said friction shoes into frictional contact with said cylindrical surface.
Claim 12
Dependent Claim
35 words
In a change speed transmission the combination according to claim 9 including a thrust collar surrounding and in spaced relation to said drive shaft and connected to said pin and operable to move said pin.
Claim 13
Dependent Claim
44 words
In a change speed transmission, the combination according to claim 5 including a cage assembly for said rollers, said cage assembly having spaced pockets, friction shoes radially movable in said pockets, and means biasing said friction shoes into frictional contact with said cylindrical surface.
Claim 14
Dependent Claim
136 words
In a change speed transmission the combination according to claim 1 wherein said roller clutch device includes a pair of clutch members connected to respective shafts and arranged concentrically one within the other, one of said clutch members having a plurality of cam faces and the other clutch member having a cylindrical surface, and rollers engageable with said cam faces and said cylindrical surface to provide said wedging positions, and a cage for said rollers, and wherein said control means comprises an apertured plate connected to one end of said cage, and at least one pin supported for movement axially of said shafts into an aperture of said plate to locate said plate and thereby said cage to position said rollers to prevent wedging engagement of said rollers with said cam faces and said cylindrical surface.
Claim 15
Dependent Claim
39 words
In a change speed transmission the combination according to claim 13 wherein said plate is provided with spaced pockets, friction shoes radially movable in said pockets, and means biasing said friction shoes into frictional contact with said cylindrical surface.
Claim 16
Dependent Claim
136 words
In a change speed transmission the combination according to claim 1 wherein said roller clutch device includes a pair of clutch members connected to respective shafts and arranged concentrically one within the other, one of said clutch members having a plurality of cam faces and the other clutch member having a cylindrical surface, and rollers engageable with said cam faces and said cylindrical surface to provide said wedging positions, and a cage for said rollers, and wherein said control means comprises an apertured plate connected to one end of said cage, and at least one pin supported for movement axially of said shafts into an aperture of said plate to locate said plate and thereby said cage to position said rollers to prevent wedging engagement of said rollers with said cam faces and said cylindrical surface.
Claim 17
Dependent Claim
39 words
In a change speed transmission the combination according to claim 15 wherein said plate is provided with spaced pockets, friction shoes radially movable in said pockets, and means biasing said friction shoes into frictional contact with said cylindrical surface.
References Cited (Backward Citations)
US3209620A
Cited
US3230796A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |