Assignee
SERCO CORP
CA29 patents
Top patents by PatentIndex Score
US5460460AOct 24, 1995
Scissors lift dock leveler
SERCO CORP80 citations96
US5459963AOct 24, 1995
Safety gate for loading docks
SERCO CORP94 citations96
US5313681AMay 24, 1994
Vertically storing dock leveler
SERCO CORP56 citations96
US5120181AJun 9, 1992
Vehicle restraint
SERCO CORP39 citations96
US5088143AFeb 18, 1992
Dock leveler lip actuation mechanism
SERCO CORP71 citations96
US5026242AJun 25, 1991
Automatic vehicle restraint
SERCO CORP58 citations96
US4988254AJan 29, 1991
Vehicle restraint
SERCO CORP56 citations96
US5396676AMar 14, 1995
Vertically storing dock leveler
SERCO CORP98 citations95
US5001799AMar 26, 1991
Seal carried by a vertically storing dock leveler
SERCO CORP60 citations95
US5454682AOct 3, 1995
Vehicle restraint
SERCO CORP29 citations93
US5346353ASep 13, 1994
Vehicle restraint
SERCO CORP26 citations93
US5336033AAug 9, 1994
Vehicle restraint
SERCO CORP30 citations93
US5303443AApr 19, 1994
Dock leveler hold-down system
SERCO CORP21 citations93
US5117526AJun 2, 1992
Vertically storing dock leveler
SERCO CORP42 citations93
US5096359AMar 17, 1992
Vehicle restraint actuator
SERCO CORP33 citations93
US5071306ADec 10, 1991
Vehicle restraint
SERCO CORP46 citations93
US4977635ADec 18, 1990
Control circuit for vertically storing dock leveler
SERCO CORP26 citations93
US4974276ADec 4, 1990
Dock leveler hold-down with variable position safety legs
SERCO CORP33 citations93
US4937906AJul 3, 1990
Variable lip throw-out for dockboard
SERCO CORP36 citations93
US4928340AMay 29, 1990
Dock leveler
SERCO CORP45 citations93
US5097557AMar 24, 1992
Trapezoidal beam dock leveler
SERCO CORP25 citations86
US5048246ASep 17, 1991
Wedge seal for loading dock shelter
SERCO CORP23 citations80
US6190108B1Feb 20, 2001
Vehicle restraint
SERCO CORP8 citations74
US5526545AJun 18, 1996
Automatic return to dock mechanism
SERCO CORP14 citations74
US5511267AApr 30, 1996
Dock leveler hydraulic circuit
SERCO CORP10 citations74
US5259718ANov 9, 1993
Vehicle restraint
SERCO CORP17 citations74
US5157801AOct 27, 1992
Dock leveler having automatically actuated vehicle barrier
SERCO CORP17 citations74
US4979253ADec 25, 1990
Hydraulic circuit for control of lip of vertically storing dock leveler
SERCO CORP16 citations74
US4961241AOct 9, 1990
Brake for rail dock leveler
SERCO CORP8 citations74