Patent US3590611A successfully refreshed from Google Patents.
US3590611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking device
Assignee: Tokai Rika Co Ltd
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Filing: 1969-02-25
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Granted: 1971-07-06
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Expires: 1989-02-25
Abstract
Abstract A locking device of the cylinder type for a steering column in automobiles, in which a locking bolt does not protrude to a position where it engages the steering column even when a rotatable cylinder of the lock is turned to a locking position by a key. Even in the locking position the key inserted into the rotatable cylinder and protruded partly therefrom keeps its engagement with an engaging means mounted on a sliding member which in turn suppresses the movement of an extension integrally made with the locking bolt.
Inventors
- 👤 Yoshikatu Nakashima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:48
CPC Classifications
B; B60; B60R; B60R25/00; B60R25/01; B60R25/02; B60R25/021; B60R25/0211; B60R25/02115; B60R25/02126; B60R25/02128; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5611; Y10T70/5646; Y10T70/565; Y10T70/5655; Y10T70/5664; Y10T70/5889; Y10T70/5956
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
301 words
A locking device for a steering column in an automobile comprising a casing adapted to be secured to said column; a keyactivated rotatable lock in said casing; a bolt member slidably arranged within said casing and having an extension thereof; said lock being of the cylinder type and having a rotatable cylinder reciprocably and rotatably operated by the corresponding key; a controlling shaft movably mounted coaxially with the rotatable cylinder, one of the limits of rotation being a locking position and another limit being a lock releasing position; a sliding member slidably inserted into the controlling shaft in its diametrical direction, said sliding member being adapted to protrude in the protruding direction of the said locking bolt at the locking position and being forced to by camming engagement with said casing to retract as said cylinder is rotated to the lock releasing position; a semicircular cam portion formed on the controlling shaft and provided with a flat face joining ends of the semicircular cam face, said flat face confronting the said extension of the locking bolt when said cylinder is in the locking position; an engaging means mounted on the sliding member and resiliently biased toward the cylinder, the forward end of said means engaging a side of the key when the sliding member is in the retracted position at the locking position of the controlling shaft and contacting with the forward end of the key when the sliding member is in the protruding position; and the locking bolt being displaceable radially with reference to the axial direction of the controlling shaft and having a spring biasing the bolt towards a protruding locking position and the said extension being engageable with the semicircular cam portion and the sliding member at the side opposite to the protruding position of the locking bolt.
Claim 2
Dependent Claim
301 words
A locking device for a steering column in an automobile comprising a casing adapted to be secured to said column; a keyactivated rotatable lock in said casing; a bolt member slidably arranged within said casing and having an extension thereof; said lock being of the cylinder type and having a rotatable cylinder reciprocably and rotatably operated by the corresponding key; a controlling shaft movably mounted coaxially with the rotatable cylinder, one of the limits of rotation being a locking position and another limit being a lock releasing position; a sliding member slidably inserted into the controlling shaft in its diametrical direction, said sliding member being adapted to protrude in the protruding direction of the said locking bolt at the locking position and being forced to by camming engagement with said casing to retract as said cylinder is rotated to the lock releasing position; a semicircular cam portion formed on the controlling shaft and provided with a flat face joining ends of the semicircular cam face, said flat face confronting the said extension of the locking bolt when said cylinder is in the locking position; an engaging means mounted on the sliding member and resiliently biased toward the cylinder, the forward end of said means engaging a side of the key when the sliding member is in the retracted position at the locking position of the controlling shaft and contacting with the forward end of the key when the sliding member is in the protruding position; and the locking bolt being displaceable radially with reference to the axial direction of the controlling shaft and having a spring biasing the bolt towards a protruding locking position and the said extension being engageable with the semicircular cam portion and the sliding member at the side opposite to the protruding position of the locking bolt.
References Cited (Backward Citations)
US2991643A
Cited
US3132503A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |