Door lock guard

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4484463
SERIAL NO

06423827

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

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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, CT5

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hennessy, Thomas F Bristol, CT 14 192

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (18)
* 4751834 Door lock guard device 38 1987
* 5076626 Method and device for repairing or protecting a door and kit for doing same 24 1991
* 5131189 Security door having antiprying member 24 1991
* 5406814 Door lock system 16 1993
* 5586796 Reinforcing devices for doors and door frames 32 1995
* 5678871 Security astragal 9 1995
* 5893594 Security astragal 4 1997
6406076 Latch guard 13 2000
8869454 Security device for a door 0 2003
* 2005/0011,132 Security device for a door 8 2003
* 7121531 Gate with lock housing 4 2004
D549079 Latch protector 0 2006
D549080 Latch protector 1 2006
* 2006/0179,905 Latch protector 3 2006
* 8381558 Institutional door lock and retrofit mechanism 0 2008
* 2008/0289,377 Institutional door lock and retrofit mechanism 2 2008
D616284 Latch guard 0 2008
* 2011/0095,548 DOOR LATCH PROTECTOR SYSTEM AND SPACER 2 2009
 
Secure-All Company, Inc. (2)
8006527 Tamper inhibiting device for use with a lock 2 2010
* 2011/0113,835 Tamper Inhibiting Device For Use With A Lock 0 2010
 
Medeco Security Locks, Inc. (1)
* 4688409 Drop-bolt door lock assembly 26 1986
 
M.A.G. Eng. & Mfg. Inc. (2)
* 5415020 Latch guard for outwardly opening doors 13 1993
* 5547239 Latch guard for center hung doors 11 1995
 
KABA ILCO INC. (1)
* 5220816 Security arrangement for push button lock 6 1991
 
TRIANGLE BRASS MANUFACTURING COMPANY, INC. (9)
D354670 Anti-vandal trim for door 17 1993
D458528 Anti-vandal door pull 8 2001
6868704 Anti-vandal door lock apparatus 2 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
6886379 Anti-vandal door lock apparatus 3 2004
* 2004/0168,491 Anti-vandal door lock apparatus 1 2004
* 2004/0187,531 Anti-vandal door lock apparatus 3 2004
 
SARGENT MANUFACTURING COMPANY (3)
D500947 Anti-vandal door trim 5 2003
D514918 Anti-vandal door trim 1 2004
D514919 Anti-vandal door trim 1 2004
 
Rockwood Manufacturing Company (2)
D511083 Door pull 13 2003
D659507 Anti-vandal plate 2 2010
* Cited By Examiner