Patent US3535232A successfully refreshed from Google Patents.
Patent US3780596A successfully refreshed from Google Patents.
US3780596A
Expired / Lapsed
US
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Floating support for the shift lever in a shift assembly for a transmission
Assignee: Toyota Motor Corp
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Filing: 1973-01-24
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Granted: 1973-12-25
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Expires: 1993-01-24
Abstract
Abstract In a direct-shift type transmission, the shift lever is floatingly supported within an axially-extending retainer in the transmission case by means of a spring axially biasing the shift lever and also by the combination of a seat ring and a resilient member. The seat ring is axially movable within the retainer and has a spherically-shaped surface in contact with a sphericallyshaped surface on the shift lever. The resilient member is positioned between a support surface on the retainer and the seat ring so that it resiliently supports the seat ring against the biasing action of the spring.
Inventors
- 👤 H Morino
- 👤 S Takahashi
- 👤 N Katayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:53
CPC Classifications
F; F16; F16H; F16H59/00; F16H59/02; F16H59/0208; F16H2059/026; F16H2059/0269; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012; Y10T74/20018; Y10T74/20134; Y10T74/2014; Y10T74/20159; Y10T74/20165
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
221 words
In a direct-shift type transmission comprising a transmission case arranged to contain change gears, a transversely extending shift lever retainer attached to said transmission case and having a seat with a spherically shaped surface thereon, a shift lever extending into said transmission case in the axial direction of said shift lever retainer and having a portion with a spherically shaped surface thereon located within said shift lever retainer and arranged with its s spherically shaped surface in sliding contact with the spherically shaped surface of said seat in said retainer, spring means arranged to bias the spherically shaped surface of said portion and seat together so that said shift lever is rockable in the directions of a given shift pattern, wherein the improvement comprises that said shift lever retainer has a support surface therein and said seat includes a separate seat ring having a spherically shaped surface thereon with the spherically shaped surface thereof in contact with the spherically shaped surface of said portion of said shift lever, said seat ring being displaceable in the axial direction of said retainer, and a resilient member positioned between said seat ring and the support surface in said shift lever retainer for combining with said spring means and providing a floating effect on said shift lever when said shift lever is exposed to vibration.
Claim 2
Dependent Claim
221 words
In a direct-shift type transmission comprising a transmission case arranged to contain change gears, a transversely extending shift lever retainer attached to said transmission case and having a seat with a spherically shaped surface thereon, a shift lever extending into said transmission case in the axial direction of said shift lever retainer and having a portion with a spherically shaped surface thereon located within said shift lever retainer and arranged with its s spherically shaped surface in sliding contact with the spherically shaped surface of said seat in said retainer, spring means arranged to bias the spherically shaped surface of said portion and seat together so that said shift lever is rockable in the directions of a given shift pattern, wherein the improvement comprises that said shift lever retainer has a support surface therein and said seat includes a separate seat ring having a spherically shaped surface thereon with the spherically shaped surface thereof in contact with the spherically shaped surface of said portion of said shift lever, said seat ring being displaceable in the axial direction of said retainer, and a resilient member positioned between said seat ring and the support surface in said shift lever retainer for combining with said spring means and providing a floating effect on said shift lever when said shift lever is exposed to vibration.
Claim 3
Dependent Claim
20 words
In a direct-shift type transmission, as set forth in claim 1, wherein said resilient member comprises a ring-shaped elastic member.
Claim 4
Dependent Claim
23 words
In a direct-shift type transmission, as set forth in claim 2, wherein said ring-shaped elastic member has a circular shape in radial section.
Claim 5
Dependent Claim
43 words
In a direct-shift type transmission, as set forth in claim 3, wherein said ring-shaped elastic member includes a plurality of short length circular-shaped sections mounted on and extending outwardly from the surface of said ring-shaped elastic member, and angularly spaced from one another.
Claim 6
Dependent Claim
55 words
In a direct-shift type transmission, as set forth in claim 2, wherein said ring-shaped elastic member comprises a flat ring-shaped section extending transversely of the axial direction of said retainer and at least one leg extending at an acute angle from said flat ring-shaped section and outwardly therefrom relative to the axis of said retainer.
Claim 7
Dependent Claim
58 words
In a direct-shift type transmission, as set forth in claim 5, wherein said ring-shaped member has a second leg extending from the same side of said flat ring-shaped section as said at least one leg and is disposed at an acute angle to said flat ring-shaped section and extends inwardly therefrom relative to the axis of said retainer.
Claim 8
Dependent Claim
20 words
In a direct-shift type transmission, as set forth in claim 2, wherein said ring-shaped elastic member is formed of polyurethane.
Claim 9
Dependent Claim
20 words
In a direct-shift type transmission, as set forth in claim 2, wherein said ring-shaped elastic member is formed of rubber.
Claim 10
Dependent Claim
22 words
In a direct-shift type transmission, as set forth in claim 2, wherein said ring-shaped elastic member is formed of a synthetic resin.
Claim 11
Dependent Claim
19 words
In a direct-shift type transmission, as set forth in claim 1, wherein said resilient member comprises a conically-shaped spring.
Claim 12
Dependent Claim
38 words
In a direct-shift type transmission, as set forth in claim 1, wherein said resilient member comprises a ring-shaped leaf spring member having a wavy configuration undulating relative to a plane extending transversely of the axis of said retainer.
Claim 13
Dependent Claim
39 words
In a direct-shift type transmission, as set forth in claim 1, wherein said spring means comprises a coil spring encircling said shift lever and located within said retainer extending between said retainer and said portion of said shift lever.
Claim 14
Dependent Claim
28 words
In a direct-shift type transmission, as set forth in claim 12, wherein said coil spring is located on an opposite side of said retainer from said resilient member.
Claim 15
Dependent Claim
76 words
In a direct-shift type transmission, as set forth in claim 1, wherein said spring means comprises a coil spring encircling said shift lever and located exteriorly of said retainer, a snap ring connectEd to and extending transversely of said shift lever at a position spaced from said retainer, said coil spring extending axially from said retainer to said snap ring, and said resilient member located within said retainer at the end thereof adjacent said coil spring.
References Cited (Backward Citations)
US1852979A
Cited
US2174504A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |