Assignee
TRACTECH INC
US·19 granted patents·592 citations·filing 1980–2005
Top patents by PatentIndex Score
19 records- 0194US6309321B1Fully-locking torque-proportioning differentialTRACTECH INC·Filed 2000·Granted Oct 30, 2001·50 cites·18 claims
- 0292US4365524ATorque-proportioning differential with wedge block thrust bearing meansTRACTECH INC·Filed 1980·Granted Dec 28, 1982·71 cites·4 claims
- 0391US4751853ADifferential with equal depth pinion cavitiesTRACTECH INC·Filed 1986·Granted Jun 21, 1988·51 cites·2 claims
- 0490US5715733ALocking differential including a spring cap biasing assemblyTRACTECH INC·Filed 1996·Granted Feb 10, 1998·46 cites·4 claims
- 0590US4677876ATorque-proportioning differential with cylindrical spacerTRACTECH INC·Filed 1984·Granted Jul 7, 1987·57 cites·2 claims
- 0689US6688194B2Locking differential including improved clutch member and adapter sleeveTRACTECH INC·Filed 2001·Granted Feb 10, 2004·34 cites·21 claims
- 0786US4424725ALocking differential mechanism with improved holdout ring and spring retainerTRACTECH INC·Filed 1980·Granted Jan 10, 1984·43 cites·2 claims
- 0884US5836220ALocking differential with pin access windowTRACTECH INC·Filed 1997·Granted Nov 17, 1998·33 cites·9 claims
- 0978US4557158AHoldout ring construction for differentialsTRACTECH INC·Filed 1983·Granted Dec 10, 1985·29 cites·5 claims
- 1076US5671640ALocking differential with pre-load means and C-clip retainersTRACTECH INC·Filed 1996·Granted Sep 30, 1997·29 cites·8 claims
- 1174US7311632B2Gearless locking differentialTRACTECH INC·Filed 2005·Granted Dec 25, 2007·8 cites·7 claims
- 1268US4524640AIntegral holdout ring and spring retainer for differentialsTRACTECH INC·Filed 1981·Granted Jun 25, 1985·26 cites·1 claims
- 1366US4625585ATorque-proportioning differential with sectional housingTRACTECH INC·Filed 1985·Granted Dec 2, 1986·20 cites·10 claims
- 1465US4644818ADifferential apparatus with side-gear-centered center camTRACTECH INC·Filed 1984·Granted Feb 24, 1987·23 cites·5 claims
- 1561US6209700B1Electric clutch including resilient disk biasing meansTRACTECH INC·Filed 1999·Granted Apr 3, 2001·22 cites·7 claims
- 1656US6374701B1Gearless differentialTRACTECH INC·Filed 1999·Granted Apr 23, 2002·27 cites·4 claims
- 1754US6076429AClutch for a differentialTRACTECH INC·Filed 1999·Granted Jun 20, 2000·13 cites·12 claims
- 1841US5885181AHelical gear differential including lubrication passage meansTRACTECH INC·Filed 1997·Granted Mar 23, 1999·8 cites·11 claims
- 1929US6826981B1Differential for racing carsTRACTECH INC·Filed 2003·Granted Dec 7, 2004·2 cites·9 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →