Patent US3673829A successfully refreshed from Google Patents.
US3673829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Theft preventing devices in motor vehicles
Assignee: Tokai Rika Co Ltd
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Filing: 1970-11-25
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Granted: 1972-07-04
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Expires: 1990-11-25
Abstract
Abstract An improvement in theft preventing devices having a rotor lock of the cylinder type by means of which the ignition circuit of a vehicle is settable to various positions including a lock and drive position, and a locking bolt which is protrusible by the rotation of rotor to the lock position to block a vital part of vehicle, in which the improvement lies in that said rotor is not rotatable to the lock position when the rotor is once rotated from the lock position unless a latch means acting on the rotor is manipulated, whereby the accidental locking of the vital part of vehicle during the driving of the vehicle is positively prevented.
Inventors
- 👤 Tadasi Mizuno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:48
CPC Classifications
B; B60; B60R; B60R25/00; B60R25/01; B60R25/02; B60R25/021; B60R25/02142; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5889; Y10T70/5956
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
216 words
An improvement in a theft preventing device for a motor vehicle by means of which the electric circuit of a motor vehicle is settable, with the rotation of the rotor of a lock of the cylinder type, to various positions such as lock, accessory, drive and start positions and a locking bolt is protrusible only by the rotation of the rotor to said lock position so as to block a vital lockable part of the vehicle such as a steering shaft, brakes or transmission, said improvement comprising a latch means provided on the device which is normally biased by spring means to an actuated position and is operable against said spring means to a disabled position, said latch means acting in said actuated position to prevent the rotor, which has been rotated from the lock position to other positions, being rotated back to the lock position, and acting when operated to the disabled position to allow said rotor to be rotated to the lock position, and said latch means being automatically returnable by the action of the spring means to the actuated position when the rotor has been returned to the lock position, said latch means acting to prevent the rotor from being rotated towards the drive position when it is operated to the disabled position.
Claim 2
Dependent Claim
216 words
An improvement in a theft preventing device for a motor vehicle by means of which the electric circuit of a motor vehicle is settable, with the rotation of the rotor of a lock of the cylinder type, to various positions such as lock, accessory, drive and start positions and a locking bolt is protrusible only by the rotation of the rotor to said lock position so as to block a vital lockable part of the vehicle such as a steering shaft, brakes or transmission, said improvement comprising a latch means provided on the device which is normally biased by spring means to an actuated position and is operable against said spring means to a disabled position, said latch means acting in said actuated position to prevent the rotor, which has been rotated from the lock position to other positions, being rotated back to the lock position, and acting when operated to the disabled position to allow said rotor to be rotated to the lock position, and said latch means being automatically returnable by the action of the spring means to the actuated position when the rotor has been returned to the lock position, said latch means acting to prevent the rotor from being rotated towards the drive position when it is operated to the disabled position.
Claim 3
Dependent Claim
367 words
An improvement in a theft preventing device for a motor vehicle by means of which the electric circuit of a motor vehicle is settable, with the rotation of the rotor of a lock of the cylinder type, to various positions such as lock, accessory, drive and start positions and a locking bolt is protrusible only by the rotation of the rotor to said lock position so as to block a vital lockable part of the vehicle such as a steering shaft, brakes or transmission, said improvement comprising a latch means provided on the device which is normally biased by spring means to an actuated position and is operable against said spring means to a disabled position, said latch means acting in said actuated position to prevent the rotor, which has been rotated from the lock position to other positions, being rotated back to the lock position, and acting when operated to the disabled position to allow said rotor to be rotated to the lock positiOn, and said latch means being automatically returnable by the action of the spring means to the actuated position when the rotor has been returned to the lock position, said latch means coacting with cam means provided on the rotor, said cam means comprising a first cam face provided with first and second portions of different levels, said first portion being engageable with the latch means when said latch means is in the actuated position and the rotor is in the lock position and said second portion being engageable with the latch means for preventing rotation of the rotor towards the lock position when said latch means is in the actuated position and the rotor is rotated from the lock position, and a second cam face provided with first and second portions of different levels, said first portion of second cam face being engageable with the latch means for allowing the rotor to be rotated to the lock position when said latch means is operated to the disabled position and said second portion of second cam face guiding the latch means to return said means to the first portion of said first cam face when the rotor is rotated to the lock position.
Claim 4
Dependent Claim
367 words
An improvement in a theft preventing device for a motor vehicle by means of which the electric circuit of a motor vehicle is settable, with the rotation of the rotor of a lock of the cylinder type, to various positions such as lock, accessory, drive and start positions and a locking bolt is protrusible only by the rotation of the rotor to said lock position so as to block a vital lockable part of the vehicle such as a steering shaft, brakes or transmission, said improvement comprising a latch means provided on the device which is normally biased by spring means to an actuated position and is operable against said spring means to a disabled position, said latch means acting in said actuated position to prevent the rotor, which has been rotated from the lock position to other positions, being rotated back to the lock position, and acting when operated to the disabled position to allow said rotor to be rotated to the lock positiOn, and said latch means being automatically returnable by the action of the spring means to the actuated position when the rotor has been returned to the lock position, said latch means coacting with cam means provided on the rotor, said cam means comprising a first cam face provided with first and second portions of different levels, said first portion being engageable with the latch means when said latch means is in the actuated position and the rotor is in the lock position and said second portion being engageable with the latch means for preventing rotation of the rotor towards the lock position when said latch means is in the actuated position and the rotor is rotated from the lock position, and a second cam face provided with first and second portions of different levels, said first portion of second cam face being engageable with the latch means for allowing the rotor to be rotated to the lock position when said latch means is operated to the disabled position and said second portion of second cam face guiding the latch means to return said means to the first portion of said first cam face when the rotor is rotated to the lock position.
Claim 5
Dependent Claim
390 words
An improvement in a theft preventing device for a motor vehicle by means of which the electric circuit of a motor vehicle is settable, with the rotation of the rotor of a lock of the cylinder type, to various positions such as lock, accessory, drive and start positions and a locking bolt is protrusible only by the rotation of the rotor to said lock position so as to block a vital lockable part of the vehicle such as a steering shaft, brakes or transmission, said improvement comprising a latch means provided on the device which is normally biased by spring means to an actuated position and is operable against said spring means to a disabled position, said latch means acting in said actuated position to prevent the rotor, which has been rotated from the lock position to other positions, being rotated back to the lock position, and acting when operated to the disabled position to allow said rotor to be rotated to the lock position, and said latch means being automatically returnable by the action of the spring means to the actuated position when the rotor has been returned to the lock position, said latch means coacting with cam means provided on a controlling means which moves integrally with the rotor and allows the protrusion of locking bolt only when the rotor is rotated to its lock position, said cam means comprising a first cam face provided with first and second portions of different levels, said first portion being engageable with the latch means when said means is in the actuated position and the rotor is in the lock position and said second portion being engageable with the latch means for preventing the rotation of rotor towards the lock position when said means is in the actuated position and the rotor is rotated from the lock position, and a second cam face provided with first and second portions of different levels, said first portion of second cam face being engageable with the latch means for allowing the rotor to be rotated to the lock position when said means is operated to the disabled position and the second portion of the second cam face guiding the latch means to return said latch means to the first portion of the first cam face when the rotor is rotated to the lock position.
Claim 6
Dependent Claim
390 words
An improvement in a theft preventing device for a motor vehicle by means of which the electric circuit of a motor vehicle is settable, with the rotation of the rotor of a lock of the cylinder type, to various positions such as lock, accessory, drive and start positions and a locking bolt is protrusible only by the rotation of the rotor to said lock position so as to block a vital lockable part of the vehicle such as a steering shaft, brakes or transmission, said improvement comprising a latch means provided on the device which is normally biased by spring means to an actuated position and is operable against said spring means to a disabled position, said latch means acting in said actuated position to prevent the rotor, which has been rotated from the lock position to other positions, being rotated back to the lock position, and acting when operated to the disabled position to allow said rotor to be rotated to the lock position, and said latch means being automatically returnable by the action of the spring means to the actuated position when the rotor has been returned to the lock position, said latch means coacting with cam means provided on a controlling means which moves integrally with the rotor and allows the protrusion of locking bolt only when the rotor is rotated to its lock position, said cam means comprising a first cam face provided with first and second portions of different levels, said first portion being engageable with the latch means when said means is in the actuated position and the rotor is in the lock position and said second portion being engageable with the latch means for preventing the rotation of rotor towards the lock position when said means is in the actuated position and the rotor is rotated from the lock position, and a second cam face provided with first and second portions of different levels, said first portion of second cam face being engageable with the latch means for allowing the rotor to be rotated to the lock position when said means is operated to the disabled position and the second portion of the second cam face guiding the latch means to return said latch means to the first portion of the first cam face when the rotor is rotated to the lock position.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |