Assignee
SENTROL INC
US45 patents
Top patents by PatentIndex Score
US5546074AAug 13, 1996
Smoke detector system with self-diagnostic capabilities and replaceable smoke intake canopy
SENTROL INC252 citations97
US5428345AJun 27, 1995
Method of and apparatus for operating a security system to produce an alarm signal
SENTROL INC85 citations95
US4661804AApr 28, 1987
Supervised wireless security system
SENTROL INC114 citations95
USD280494SSep 10, 1985
Housing for a personal transmitter for use in an emergency alarm system
SENTROL INC76 citations95
US4523184AJun 11, 1985
Supervised wireless security system
SENTROL INC57 citations95
US5708414AJan 13, 1998
Sensitivity fault indication technique implemented in smoke detector system with self-diagnostic capabilities
SENTROL INC60 citations93
US5510767AApr 23, 1996
Glass break detector having reduced susceptibility to false alarms
SENTROL INC26 citations93
US5311024AMay 10, 1994
Lens arrangement for intrusion detection device
SENTROL INC43 citations92
US4837558AJun 6, 1989
Glass break detector
SENTROL INC33 citations92
US4745398AMay 17, 1988
Self-powered sensor for use in closed-loop security system
SENTROL INC46 citations92
US4536754AAug 20, 1985
Magnetically retained connecting cable incorporating magnetically operated switch
SENTROL INC53 citations92
US4336518AJun 22, 1982
Plunger operated magnetic contact switch assembly
SENTROL INC36 citations92
US5565852AOct 15, 1996
Smoke detector with digital display
SENTROL INC37 citations91
US5534849AJul 9, 1996
Time multiplexed, false alarm resistant magnetically actuated security system
SENTROL INC71 citations89
US5026990AJun 25, 1991
Method and apparatus for installing infrared sensors in intrusion detection systems
SENTROL INC47 citations89
US4943791AJul 24, 1990
Wide gap magnetic reed switch and method for manufacture of same
SENTROL INC40 citations89
US5777552AJul 7, 1998
Curtain door alarm
SENTROL INC24 citations88
US5233323AAug 3, 1993
Defeat resistant interlock/monitoring system
SENTROL INC62 citations87
US5192931AMar 9, 1993
Dual channel glass break detector
SENTROL INC47 citations87
USD361732SAug 29, 1995
Smoke detector housing
SENTROL INC17 citations81
USD359701SJun 27, 1995
Smoke detector cover
SENTROL INC19 citations81
USD281865SDec 24, 1985
Surface mount housing for a security system transmitter
SENTROL INC19 citations81
US5239202AAug 24, 1993
Failsafe interlock switch
SENTROL INC26 citations80
US5539381AJul 23, 1996
Fixed threshold and rate of rise heat detector with dynamic thermal reference
SENTROL INC18 citations74
USD384875SOct 14, 1997
Plunger lock mechanism
SENTROL INC12 citations73
US4692752ASep 8, 1987
Moisture detector
SENTROL INC17 citations73
USD281866SDec 24, 1985
Housing for a transmitter for a security alarm system
SENTROL INC6 citations73
US4543458ASep 24, 1985
Switch and connector assembly including protective housings for jumper cable
SENTROL INC10 citations73
US4513354AApr 23, 1985
Housing for an electronic circuit board
SENTROL INC20 citations73
US4456897AJun 26, 1984
Plunger-operated switch unit
SENTROL INC16 citations73
USD272242SJan 17, 1984
Latching housing for miniature electrical components
SENTROL INC13 citations73
US4409577AOct 11, 1983
Switch housing having recessed conductor terminals
SENTROL INC17 citations73
US4392707AJul 12, 1983
Take-off connector for security circuit
SENTROL INC10 citations73
US4371856AFeb 1, 1983
Switch assembly including circuit test points
SENTROL INC18 citations73
US4335270AJun 15, 1982
Switch housing incorporating flexibly attached mounting plate
SENTROL INC11 citations73
USD255030SMay 20, 1980
Housing for a magnetic contact switch
SENTROL INC16 citations73
US5155460AOct 13, 1992
Switch housing with magnetic roller plunger
SENTROL INC14 citations71
US5656982AAug 12, 1997
Plunger-operated alarm switch assembly
SENTROL INC18 citations70
US5635887AJun 3, 1997
Compact rare earth magnet security switch assembly
SENTROL INC16 citations69
US5804891ASep 8, 1998
Battery saving switching mechanism
SENTROL INC11 citations64
US5004879AApr 2, 1991
Switch housing with resilient retainers
SENTROL INC18 citations63
US4525018AJun 25, 1985
Modular terminal housing
SENTROL INC4 citations62
USD273783SMay 8, 1984
Explosion-proof housing for electrical circuit components
SENTROL INC5 citations62
USD268669SApr 19, 1983
Combined switch housing and integral mounting bracket
SENTROL INC5 citations62
USD262618SJan 12, 1982
Housing for a floor-mounted magnetic contact switch
SENTROL INC4 citations62