US3797287A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steering system lock for diesel powered motor vehicles
Assignee: Toyota Motor Corp
•
Filing: 1972-05-01
•
Granted: 1974-03-19
•
Expires: 1992-05-01
Abstract
Abstract A steering system lock device for a Diesel powered motor vehicle includes, in combination, a key cylinder assembly for locking the steering shaft of the vehicle and an engine shut-down device for starting and stopping the vehicle engine. By inserting a key, the key cylinder assembly can be displaced between several positions including a locked position for the steering shaft. A push-pull connector cable extends between the key cylinder assembly and the engine shut-down device to operatively connect to each other. The key cylinder assembly can be displaced in a position for locking the steering shaft by a key only during the engine stop by operation of the engine shut-down device. On the other hand, the key cylinder assembly is prevented from displacing into the locking position during operation of the engine.
Inventors
- 👤 Y Iba
- 👤 Y Tomizu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:36
CPC Classifications
B; B60; B60R; B60R25/00; B60R25/01; B60R25/02; B60R25/021; B60R25/02142; F; F02; F02B; F02B3/00; F02B3/06; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5889; Y10T70/5894; Y10T70/5898; Y10T70/5912; Y10T70/5916; Y10T70/5956; Y10T70/5973; Y10T70/5978
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
186 words
A steering system lock for a diesel engine powered vehicle including a steering shaft comprising, in combination, locking means operably displaceable between a plurality of positions, means operable in response to movement of said locking means for locking said steering shaft when said locking means is in one of said plurality of positions, a switch controlling member movably displaceable with said locking means, engine shut-down means movably displaceable to a position for shutting down said engine, cable means connected with said shut-down means to be movable therewith and extending in operative relationship with said switch controlling member, and slotted means defined in said switch controlling member for selectively engaging said cable means, said slotted means being configured to engage said cable means to prevent movement of said locking means to said one plurality of positions locking said steering shaft when said engine is operating, said switch controlling member being configured to engage said cable means to prevent movement of said shut-down means out of said position for shutting down said engine when said locking means is in said one plurality of positions locking said steering shaft.
Claim 2
Dependent Claim
186 words
A steering system lock for a diesel engine powered vehicle including a steering shaft comprising, in combination, locking means operably displaceable between a plurality of positions, means operable in response to movement of said locking means for locking said steering shaft when said locking means is in one of said plurality of positions, a switch controlling member movably displaceable with said locking means, engine shut-down means movably displaceable to a position for shutting down said engine, cable means connected with said shut-down means to be movable therewith and extending in operative relationship with said switch controlling member, and slotted means defined in said switch controlling member for selectively engaging said cable means, said slotted means being configured to engage said cable means to prevent movement of said locking means to said one plurality of positions locking said steering shaft when said engine is operating, said switch controlling member being configured to engage said cable means to prevent movement of said shut-down means out of said position for shutting down said engine when said locking means is in said one plurality of positions locking said steering shaft.
Claim 3
Dependent Claim
139 words
A steering system lock according to claim 1 wherein said locking means is rotatably movable to said plurality of positions, said switch controlling member being cylindrically shaped and rotatably movable with said locking means, said slotted means being defined therein as an elongated slot formed on the circumferential periphery of said switch controlling member, said cable means having a pair of ends, with one end connected for movement with said engine shut-down means and with the other end extending for operative engagement with said switch controlling member, said switch controlling member being configured to prevent said other end to extend into said slot when said locking means is not in said position locking said steering shaft, and to prevent movement of said other end into said slot when said locking means is in said position locking said steering shaft.
Claim 4
Dependent Claim
59 words
A steering system lock according to claim 2 wherein said engine shut-down means includes a member manually displaceable between a position cutting off fuel flow to said diesel engine and a position permitting fuel flow thereto, said lock including a link mechanism connecting said one end of said cable means with said manually displaceable member for corresponding movement therewith.
Claim 5
Dependent Claim
52 words
A steering system lock according to claim 1 wherein said locking means includes a shaft having a cam surface thereon and a spring biasing lock bar associated with said shaft and arranged to drop into lock engagement with said steering shaft when said locking means is in said steering shaft locking position.
Claim 6
Dependent Claim
58 words
A steering system lock according to claim 2 wherein said locking means includes a key cylinder assembly operably displaceable by means of a key, a cylinder, a shaft rotatably mounted within said cylinder for rotational displacement by said key, said switch controlling member being positioned within said cylinder and in engagement with said shaft for rotational displacement therewith.
Claim 7
Dependent Claim
28 words
A steering system lock according to claim 5 wherein the elongated direction of said slot in said switch controlling member extends normally to the axis of said shaft.
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) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |