US Patent No: 5,813,261
Number of patents in Portfolio can not be more than 2000
Keyless deadbolt lock engaging device
Stats
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Sep 29, 1998
Issued date -
Oct 31, 1996
filing date -
08/742,133
serial no -
In Force
status
Importance
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Abstract
a device allowing engagement of a conventional keyed deadbolt lock tumbler assembly without use of a key is provided. The device is assembled around the tumbler assembly and is fitted into a standard door lock cut-out. The device includes a rotatable ring extending substantially around the periphery of the device. At rest the rotatable ring is biased in an original starting position. Upon overcoming the bias, the rotatable ring is moved to a second engaging position in which the deadbolt is projected into an engaged position. Upon release of the rotatable ring the ring is biased back to the original position, while at the same time the deadbolt remains engaged. The biasing back of the device prevents the lock from binding or jamming.
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First Claim
Related Publications
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International Classification(s)
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- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 5,010,749 Locking device for an auxiliary lock | 21 | 1990 | |
| 5,118,152 Inner bearing plate unit of easy assembling for a lock | 19 | 1991 | |
| 5,199,285 Locking device for an auxiliary lock | 23 | 1991 | |
| 5,186,030 Locking device for an auxiliary lock | 15 | 1991 | |
| 5,150,592 Locking device for an auxiliary lock | 18 | 1991 | |
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| 4,236,396 Retrofit lock | 28 | 1978 | |
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| 5,617,749 Door lock | 22 | 1996 | |
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| 5,177,987 Key-in-lever type door lock used for handicapped people | 59 | 1991 | |
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| 4,903,512 Lock of the disconnectable rotor type | 29 | 1989 | |
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| 4,414,828 Locking apparatus for compartment door operated by a key | 25 | 1981 | |
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| 4,300,374 Key retaining cylinder for a lock | 11 | 1979 | |
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| 4,290,282 Single cylinder deadbolt lock mechanism | 5 | 1979 | |
| 4,712,396 Easy to lock deadbolt structure | 8 | 1986 | |
| 4,709,566 Single cylinder deadbolt lock mechanism | 9 | 1986 | |
| 5,193,370 Lost motion door locking mechanism | 9 | 1992 | |
| 5,481,890 Cylindrical lockset knob to lever conversion assembly | 39 | 1993 | |