US3682013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gear change mechanism
Assignee: Individual
•
Filing: 1971-03-04
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Granted: 1972-08-08
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Expires: 1991-03-04
Abstract
Abstract Gear change mechanism for a vehicle multi speed gearbox includes a driver operable lever movable within a gate, there being associated with the lever a disc. The disc is provided with two pairs of projections with which are associated baulk devices respectively, and these devices are operated so as to prevent movement of the lever into the neutral or gear engaged position until the selector mechanism of the gearbox has moved to the appropriate position. This provides an indication to the driver particularly in systems where the gearbox is remote from the driver, that the selector mechanism of the gearbox is in a particular position.
Inventors
- 👤 John Harrison Asbery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:30
CPC Classifications
F; F16; F16H; F16H59/00; F16H59/02; F16H59/04; F16H59/044; F16H61/00; F16H61/24; F16H2061/242; F16H61/26; F16H61/28; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19251
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
105 words
Gear change mechanism for a vehicle multi speed gearbox and including a gearbox selector lever movable to effect engagement of a particular ratio, first and second powered devices for effecting movement of the selector lever in directions substantially at right angles, a driver operable control lever for controlling the operation of said powered devices, and sensing means associated with the selector lever and which is operated when a stage in the movement of the selector lever is completed and said sensing means serving to provide a signal to the driver of when the next stage in the movement of the selector lever can take place.
Claim 2
Dependent Claim
105 words
Gear change mechanism for a vehicle multi speed gearbox and including a gearbox selector lever movable to effect engagement of a particular ratio, first and second powered devices for effecting movement of the selector lever in directions substantially at right angles, a driver operable control lever for controlling the operation of said powered devices, and sensing means associated with the selector lever and which is operated when a stage in the movement of the selector lever is completed and said sensing means serving to provide a signal to the driver of when the next stage in the movement of the selector lever can take place.
Claim 3
Dependent Claim
36 words
Gear change mechanism as claimed in claim 1 including baulk mechanism operable by said sensing means to prevent movement of the driver operable lever until the stage in the movement of the selector lever is completed.
Claim 4
Dependent Claim
48 words
Gear change mechanism as claimed in claim 1 in which said sensing means comprises a pair of sensing members, one of which senses when the selector lever is in the neutral position and the other of which senses when the selector lever is in a ratio engaged position.
Claim 5
Dependent Claim
20 words
Gear change mechanism as claimed in claim 3 including a pair of baulk mechanisms operated by said sensing members respectively.
Claim 6
Dependent Claim
42 words
Gear change mechanism as claimed in claim 4 in which said one sensing means and its associated baulk mechanism acts to prevent the driver operable lever being moved fully into its neutral position until said selector lever is in the neutral position.
Claim 7
Dependent Claim
44 words
Gear change mechanism as claimed in claim 5 in which said other sensing means and its associated baulk mechanism acts to prevent the driver operable lever being moved fully into the gear engaged position until the selector lever is in a gear engaged position.
Claim 8
Dependent Claim
60 words
Gear change mechanism as claimed in claim 6 including a disc coupled to the driver operable selector lever so as to move angularly as the selector lever is moved towards the gear ratio selector positions, each baulk mechanism including a pair of surfaces defined on the disc and with which co-operate a movable stem forming part of The baulk mechanism.
Claim 9
Dependent Claim
46 words
Gear change mechanism as claimed in claim 7 including a projection on said disc for operating a pair of control valves, said control valves controlling the operation of the one of said powered devices which effects movement of the selector lever into the gear engaged position.
Claim 10
Dependent Claim
41 words
Gear change mechanism as claimed in claim 8 including a further pair of control valves operable by movement of the driver operable lever in the neutral plane, said further pair of control valves controlling the operation of said other powered device.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |