Assignee
TRACTECH INC
19 patents
Top patents by PatentIndex Score
US4365524ADec 28, 1982
Torque-proportioning differential with wedge block thrust bearing means
TRACTECH INC71 citations94
US6309321B1Oct 30, 2001
Fully-locking torque-proportioning differential
TRACTECH INC50 citations93
US5836220ANov 17, 1998
Locking differential with pin access window
TRACTECH INC33 citations93
US5671640ASep 30, 1997
Locking differential with pre-load means and C-clip retainers
TRACTECH INC29 citations93
US6688194B2Feb 10, 2004
Locking differential including improved clutch member and adapter sleeve
TRACTECH INC34 citations92
US5715733AFeb 10, 1998
Locking differential including a spring cap biasing assembly
TRACTECH INC46 citations92
US4751853AJun 21, 1988
Differential with equal depth pinion cavities
TRACTECH INC51 citations92
US4677876AJul 7, 1987
Torque-proportioning differential with cylindrical spacer
TRACTECH INC57 citations92
US4557158ADec 10, 1985
Holdout ring construction for differentials
TRACTECH INC29 citations91
US4424725AJan 10, 1984
Locking differential mechanism with improved holdout ring and spring retainer
TRACTECH INC43 citations90
US6209700B1Apr 3, 2001
Electric clutch including resilient disk biasing means
TRACTECH INC22 citations82
US6374701B1Apr 23, 2002
Gearless differential
TRACTECH INC27 citations80
US4644818AFeb 24, 1987
Differential apparatus with side-gear-centered center cam
TRACTECH INC23 citations75
US4524640AJun 25, 1985
Integral holdout ring and spring retainer for differentials
TRACTECH INC26 citations75
US6076429AJun 20, 2000
Clutch for a differential
TRACTECH INC13 citations74
US5885181AMar 23, 1999
Helical gear differential including lubrication passage means
TRACTECH INC8 citations73
US4625585ADec 2, 1986
Torque-proportioning differential with sectional housing
TRACTECH INC20 citations73
US7311632B2Dec 25, 2007
Gearless locking differential
TRACTECH INC8 citations71
US6826981B1Dec 7, 2004
Differential for racing cars
TRACTECH INC2 citations44