US4320670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shift interlock mechanism of a vehicle power transmission
Assignee: Nissan Motor Co Ltd
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Filing: 1980-01-25
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Granted: 1982-03-23
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Expires: 2000-01-25
Abstract
Abstract A shift interlock mechanism of a vehicle power transmission has a shift lever fixedly mounted on a control shaft. An interlock plate, which is formed with a slot, axially slidably engaging the shift lever, is further provided on its both sides with a pair of cylindrical members. The cylindrical members are coaxial with the control shaft and formed with slots which are contiguous with the slot of the interlock plate. As the shift lever is rotated to effect selective engagement of desired speed gears, the cylindrical members provide increased supporting area of the shift lever to withstand excessive bending moment applied thereto.
Inventors
- 👤 Tamio Kawamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:33
CPC Classifications
F; F16; F16H; F16H63/00; F16H63/02; F16H63/30; F16H63/34; F16H63/3408; F16H59/00; F16H59/02; F16H59/04; F16H59/042; F16H63/08; F16H63/20; F16H63/3069; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012; Y10T74/20018; Y10T74/20085; Y10T74/20104
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
126 words
A shift interlock mechanism for a vehicle transmission including a control shaft which is rotated or axially moved by manually operating a control lever to effect selecting operation or shifting operation of different speed gears, the mechanism comprising a shift lever fixedly mounted on the control shaft, an interlock plate formed with a slot axially slidably engaging the shift lever, and a pair of cylindrical members disposed on opposite sides of the interlock plate and formed integrally with the interlock plate and coaxially with the control shaft, each of the cylindrical members being formed with a longitudinal slot which is of the same width as the slot of the interlock plate, the slots of the cylindrical members being contiguous with the slot of the interlock plate.
Claim 2
Dependent Claim
126 words
A shift interlock mechanism for a vehicle transmission including a control shaft which is rotated or axially moved by manually operating a control lever to effect selecting operation or shifting operation of different speed gears, the mechanism comprising a shift lever fixedly mounted on the control shaft, an interlock plate formed with a slot axially slidably engaging the shift lever, and a pair of cylindrical members disposed on opposite sides of the interlock plate and formed integrally with the interlock plate and coaxially with the control shaft, each of the cylindrical members being formed with a longitudinal slot which is of the same width as the slot of the interlock plate, the slots of the cylindrical members being contiguous with the slot of the interlock plate.
Claim 3
Dependent Claim
34 words
The shift interlock mechanism as claimed in claim 1, wherein the base portion of the shift lever has a length extending in the axial direction and increasing toward the axis of the control shaft.
References Cited (Backward Citations)
GB606454A
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GB935501A
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GB983564A
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GB1065364A
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GB1195939A
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GB1224832A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-03-22 | 1985-09-21 | 1986-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-22 | 1989-09-21 | 1990-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-22 | 1993-09-21 | 1994-03-23 | $7700.00 | Window Closed / Lapsed |