Assignee
BEST LOCK CORP
US136 patents
Top patents by PatentIndex Score
US6442986B1Sep 3, 2002
Electronic token and lock core
BEST LOCK CORP89 citations98
US4773240ASep 27, 1988
Lock with force-override assembly
BEST LOCK CORP80 citations96
USD289369SApr 21, 1987
Lever handle or similar article
BEST LOCK CORP60 citations96
US4428212AJan 31, 1984
Cylinder lock retractor and chassis assembly
BEST LOCK CORP65 citations96
US4389061AJun 21, 1983
Mortise lock with improved deadlock release mechanism
BEST LOCK CORP68 citations96
US5474348ADec 12, 1995
Motorized actuator for mortise lockset
BEST LOCK CORP117 citations95
US6535136B1Mar 18, 2003
Proximity card detection system
BEST LOCK CORP56 citations94
US3955387AMay 11, 1976
Cylindrical lock set
BEST LOCK CORP67 citations94
US6684671B2Feb 3, 2004
Vending machine lock
BEST LOCK CORP56 citations93
US5010755AApr 30, 1991
Lock with torque-release means
BEST LOCK CORP30 citations93
US4998422AMar 12, 1991
Removable core padlock with bolt retainer
BEST LOCK CORP51 citations93
US4873853AOct 17, 1989
Escutcheon assembly
BEST LOCK CORP37 citations93
US4836001AJun 6, 1989
High security lock
BEST LOCK CORP32 citations93
US4768360ASep 6, 1988
Lock for sliding doors or panels
BEST LOCK CORP31 citations93
US4726613AFeb 23, 1988
Fire safety door latch
BEST LOCK CORP44 citations93
US4667994AMay 26, 1987
Frangible spindle
BEST LOCK CORP56 citations93
US4655059AApr 7, 1987
Lever handle
BEST LOCK CORP42 citations93
US4572556AFeb 25, 1986
Mortise lock
BEST LOCK CORP29 citations93
US4550581ANov 5, 1985
Break-away knob driver
BEST LOCK CORP37 citations93
US4444034AApr 24, 1984
Pull-resistant lock core
BEST LOCK CORP40 citations93
US4437695AMar 20, 1984
Knob retainer blocker mechanism
BEST LOCK CORP31 citations93
US4424693AJan 10, 1984
Key-removable lock core
BEST LOCK CORP48 citations93
US4424691AJan 10, 1984
Pull-resistant cylinder lock
BEST LOCK CORP42 citations93
US4394821AJul 26, 1983
Door lock mechanism
BEST LOCK CORP36 citations93
US4386510AJun 7, 1983
Key-changeable lock core
BEST LOCK CORP48 citations93
US4195504AApr 1, 1980
Mortise lock adaptation to key-removable cores
BEST LOCK CORP39 citations93
US5931430AAug 3, 1999
Motor assembly for cylindrical lockset
BEST LOCK CORP40 citations92
US5421178AJun 6, 1995
Motorized lock actuator for cylindrical lockset
BEST LOCK CORP123 citations92
USD328856SAug 25, 1992
Portion of a key blade blank
BEST LOCK CORP31 citations92
US5794472AAug 18, 1998
Disconnecting drive mechanism for cylindrical lockset
BEST LOCK CORP85 citations91
US4998760AMar 12, 1991
Door handle return assembly
BEST LOCK CORP57 citations91
US4995249AFeb 26, 1991
Door handle assembly with hollow knob and interchangeable lock core
BEST LOCK CORP56 citations91
US4843852AJul 4, 1989
Disposable construction core
BEST LOCK CORP35 citations91
US4589691AMay 20, 1986
Lever handle mortise lock
BEST LOCK CORP49 citations91
US4294093AOct 13, 1981
Pin tumbler lock with pull-resistant key plug
BEST LOCK CORP33 citations90
US5590555AJan 7, 1997
Anti-rotation mechanism for lockset chassis
BEST LOCK CORP34 citations88
US4655063AApr 7, 1987
Pick-resistant core
BEST LOCK CORP38 citations87
US5116170AMay 26, 1992
Drill jig for preparing a door to receive a cylindrical lock
BEST LOCK CORP36 citations86
US4428570AJan 31, 1984
Tool-loadable biasing spring
BEST LOCK CORP27 citations86
US5136869AAug 11, 1992
High security key and cylinder lock assembly
BEST LOCK CORP26 citations85
US5291767AMar 8, 1994
Protective lock cylinder mounting assembly
BEST LOCK CORP43 citations84
US4633690AJan 6, 1987
Cylinder anchor
BEST LOCK CORP24 citations82
US4496178AJan 29, 1985
Extended latch tube assembly
BEST LOCK CORP22 citations82
US4435967AMar 13, 1984
Doorknob
BEST LOCK CORP20 citations82
US4342478AAug 3, 1982
Knob-connector spring
BEST LOCK CORP25 citations82
US4301667ANov 24, 1981
Tubular latch bolt retracting mechanism
BEST LOCK CORP23 citations82
USD301116SMay 16, 1989
Bar lock assembly
BEST LOCK CORP18 citations81
US4195502AApr 1, 1980
Break-away door knob
BEST LOCK CORP28 citations80
US5916281AJun 29, 1999
Shuttling throw member for lockset
BEST LOCK CORP18 citations79
US5272895ADec 28, 1993
High security key and cylinder lock assembly
BEST LOCK CORP17 citations74
Showing the top 50 of 136 patents by PatentIndex Score.