US Patent No: 4,484,463

Number of patents in Portfolio can not be more than 2000

Door lock guard

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Abstract

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A guard for protecting the cylinder of a door lock from removal comprises a substantially rectangular plate having a first portion including a section adapted to fit over the lock cylinder and a second portion offset from the first portion, the second portion traversing the gap between the door and the doorjamb for protecting the bolt.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
INTERNATIONAL SECURITY PRODUCTS, INC.SOUTHINGTON, CT17

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hennessy, Thomas F Galiano Island, CA 15 170

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Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Triangle Brass Manufacturing Company, Inc. (7)
D354670 Anti-vandal trim for door 17 1993
D458528 Anti-vandal door pull 7 2001
6,868,704 Anti-vandal door lock apparatus 1 2001
D462252 Anti-vandal door pull 5 2002
D474675 Latch protector for cylindrical door lock 4 2002
D474101 Latch protector for cylindrical door lock 6 2002
6,886,379 Anti-vandal door lock apparatus 2 2004
 
SARGENT MANUFACTURING COMPANY (3)
D500947 Anti-vandal door trim 4 2003
D514918 Anti-vandal door trim 1 2004
D514919 Anti-vandal door trim 1 2004
 
M.A.G. Eng. & Mfg. Inc. (2)
5,415,020 Latch guard for outwardly opening doors 13 1993
5,547,239 Latch guard for center hung doors 9 1995
 
Rockwood Manufacturing Company (2)
D511083 Door pull 12 2003
D659507 Anti-vandal plate 1 2010
 
KABA ILCO INC. (1)
5,220,816 Security arrangement for push button lock 6 1991
 
MEDECO SECURITY LOCKS, INC. (1)
4,688,409 Drop-bolt door lock assembly 22 1986
 
SECURE-ALL COMPANY, INC. (1)
8,006,527 Tamper inhibiting device for use with a lock 0 2010
 
Other [Check patent profile for assignment information] (13)
4,751,834 Door lock guard device 38 1987
5,076,626 Method and device for repairing or protecting a door and kit for doing same 22 1991
5,131,189 Security door having antiprying member 23 1991
5,406,814 Door lock system 14 1993
5,586,796 Reinforcing devices for doors and door frames 28 1995
5,678,871 Security astragal 9 1995
5,893,594 Security astragal 4 1997
6,406,076 Latch guard 11 2000
7,121,531 Gate with lock housing 4 2004
D549079 Latch protector 0 2006
D549080 Latch protector 1 2006
8,381,558 Institutional door lock and retrofit mechanism 0 2008
D616284 Latch guard 0 2008