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US 5,007,263 AGranted
Security device
OwnerBryan V. Taylorinventor
Life of this patent
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Abstract
The present invention relates to an improved security device. The improved security device includes a U-shaped member which is designed to engage the shaft of a doorknob. Attached to the U-shaped member is a locking plate which has openings therein to receive either the latch of a deadbolt or the key head of a key inserted into a deadbolt. The improved security device, when in place, prevents entry into a dwelling by a person unlocking a deadbolt by preventing the rotation of a deadbolt latch or a key head inserted into the deadbolt.
Claims4
An improved security device mountable on an inside surface of a closure and comprising:
- (a) a U-shaped member;
- (b) a locking plate having upper, middle and lower regions, said locking plate having a first opening in said upper region being adapted to engage a latch of a deadbolt and a second opening in said middle region being adapted to engage a key head of a key inserted into a deadbolt;
- and
- (c) pivotal connecting means in said lower region for removably connecting said U-shaped member to said locking plate with said U-shaped member extending below said locking plate;
- (d) whereby said U-shaped member may engage a shaft of an interior doorknob of said closure, and said locking plate, while attached to said U-shaped member, may engage a latch or a key head associated with a deadbolt while in a locked position to prevent rotation thereof and unlocking of a said deadbolt.
2 more elements
Dependencies are inferred from the claim text.