Assignee
TOROTRAK DEV LTD
US·46 granted patents·5 pending applications·2,645 citations·filing 1988–2013
Top patents by PatentIndex Score
51 records- 0199US6066067APosition servo systemsTOROTRAK DEV LTD·Filed 1995·Granted May 23, 2000·302 cites·16 claims
- 0299US5766105AContinuously variable transmission capable of torque controlTOROTRAK DEV LTD·Filed 1994·Granted Jun 16, 1998·147 cites·24 claims
- 0398US5564998AContinuously-variable-ratio-transmissionsTOROTRAK DEV LTD·Filed 1994·Granted Oct 15, 1996·206 cites·6 claims
- 0497US5895337AContinuously-variable-ratios transmissionsTOROTRAK DEV LTD·Filed 1996·Granted Apr 20, 1999·101 cites·5 claims
- 0597US5643121AContinuously-variable-ratio transmissionsTOROTRAK DEV LTD·Filed 1994·Granted Jul 1, 1997·80 cites·8 claims
- 0695US5401221ATransmission of the toroidal-race, rolling-traction type having a mixer and a reducer epicyclic type gearing with clutches brakesTOROTRAK DEV LTD·Filed 1991·Granted Mar 28, 1995·218 cites·5 claims
- 0794US5938557ACVT Control SystemTOROTRAK DEV LTD·Filed 1998·Granted Aug 17, 1999·58 cites·15 claims
- 0893US7951041B2VariatorTOROTRAK DEV LTD·Filed 2005·Granted May 31, 2011·29 cites·18 claims
- 0993US7318786B2Hydraulic control circuit for a variatorTOROTRAK DEV LTD·Filed 2002·Granted Jan 15, 2008·42 cites·15 claims
- 1093US7278951B2Hydraulic control circuit for a continuously variable transmissionTOROTRAK DEV LTD·Filed 2002·Granted Oct 9, 2007·44 cites·25 claims
- 1193US5453061AContinuously-variable ratio transmission of the toroidal race rolling traction typeTOROTRAK DEV LTD·Filed 1991·Granted Sep 26, 1995·58 cites·16 claims
- 1293US5090951AHydraulic control circuits for continuously-variable-ratio transmissionsTOROTRAK DEV LTD·Filed 1989·Granted Feb 25, 1992·51 cites·8 claims
- 1393US4922788AContinuously variable transmissionTOROTRAK DEV LTD·Filed 1988·Granted May 8, 1990·52 cites·11 claims
- 1492US7407459B2Continuously variable ratio transmission systemTOROTRAK DEV LTD·Filed 2003·Granted Aug 5, 2008·39 cites·20 claims
- 1592US6979276B2Control system and method for a continuously variable transmissionTOROTRAK DEV LTD·Filed 2001·Granted Dec 27, 2005·40 cites·17 claims
- 1692US6626793B1Hydraulic control circuit for a continuously-variable-transmissionTOROTRAK DEV LTD·Filed 2000·Granted Sep 30, 2003·39 cites·26 claims
- 1792US5667456AContinuously-variable-ratio transmission having an improved starting arrangementTOROTRAK DEV LTD·Filed 1993·Granted Sep 16, 1997·52 cites·12 claims
- 1892US5395292ATransmissions of the toroidal-race rolling-traction typeTOROTRAK DEV LTD·Filed 1993·Granted Mar 7, 1995·59 cites·35 claims
- 1991US7955210B2Drive mechanism for infinitely variable transmissionTOROTRAK DEV LTD·Filed 2006·Granted Jun 7, 2011·27 cites·16 claims
- 2091US7625309B2Continuously variable transmissionTOROTRAK DEV LTD·Filed 2004·Granted Dec 1, 2009·37 cites·9 claims
- 2191US5242337AContinuously-variable-ratio transmissions of the toroidal-race rolling-traction typeTOROTRAK DEV LTD·Filed 1990·Granted Sep 7, 1993·51 cites·5 claims
- 2290US6666791B1Bearing support for infinitely-variable-ratio transmission output discsTOROTRAK DEV LTD·Filed 2000·Granted Dec 23, 2003·32 cites·10 claims
- 2390US6312356B1Drive mechanism for infinitely variable transmissionTOROTRAK DEV LTD·Filed 2000·Granted Nov 6, 2001·32 cites·20 claims
- 2489US7530916B2Continuously variable ratio transmission systemTOROTRAK DEV LTD·Filed 2004·Granted May 12, 2009·30 cites·8 claims
- 2589US7491149B2Fluid supply arrangement for a rolling-traction continuously variable ratio transmission unitTOROTRAK DEV LTD·Filed 2003·Granted Feb 17, 2009·44 cites·13 claims
- 2689US7056261B2Hydraulic control circuit for a continuously variable transmissionTOROTRAK DEV LTD·Filed 2002·Granted Jun 6, 2006·32 cites·24 claims
- 2789US6071209AContinuously-variable-ratio transmission of the toroidal-race-rolling traction typeTOROTRAK DEV LTD·Filed 1996·Granted Jun 6, 2000·46 cites·7 claims
- 2889US5423727ATransmission of the toroidal-race rolling-traction typeTOROTRAK DEV LTD·Filed 1991·Granted Jun 13, 1995·45 cites·7 claims
- 2988US6273839B1Roller control unit for a continuously-variable-ratio transmissionTOROTRAK DEV LTD·Filed 2000·Granted Aug 14, 2001·31 cites·9 claims
- 3087US6306060B1Cooling fluid supply to hydraulically actuated rollers in a continuously-variable-ratio transmissionTOROTRAK DEV LTD·Filed 2000·Granted Oct 23, 2001·33 cites·17 claims
- 3187US6030310AVariator control systemTOROTRAK DEV LTD·Filed 1998·Granted Feb 29, 2000·63 cites·13 claims
- 3286US6464614B2Hydraulic supply for infinitely variable transmissionTOROTRAK DEV LTD·Filed 2001·Granted Oct 15, 2002·35 cites·13 claims
- 3386US5971885ARoller assemblyTOROTRAK DEV LTD·Filed 1998·Granted Oct 26, 1999·44 cites·12 claims
- 3486US5316526ATransmission of the toroidal-race rolling-traction typeTOROTRAK DEV LTD·Filed 1991·Granted May 31, 1994·38 cites·9 claims
- 3585US7637841B2Continuously variable ratio transmission unit and method of assembly thereofTOROTRAK DEV LTD·Filed 2003·Granted Dec 29, 2009·26 cites·10 claims
- 3685US7018320B2Roller control unitTOROTRAK DEV LTD·Filed 2001·Granted Mar 28, 2006·29 cites·16 claims
- 3785US5564993AContinously-variable-ratio transmission of the toroidal-race rolling-traction typeTOROTRAK DEV LTD·Filed 1993·Granted Oct 15, 1996·45 cites·9 claims
- 3885US5263907ATransmission of the toroidal-race rolling-traction typeTOROTRAK DEV LTD·Filed 1991·Granted Nov 23, 1993·36 cites·12 claims
- 3984US7632208B2Continuously variable transmissionsTOROTRAK DEV LTD·Filed 2003·Granted Dec 15, 2009·28 cites·24 claims
- 4084US7160226B2Continuously variable transmission and method of operation thereofTOROTRAK DEV LTD·Filed 2002·Granted Jan 9, 2007·43 cites·29 claims
- 4184US5820513AMethod of controlling vehicular drivelines including a continuously variable transmissionTOROTRAK DEV LTD·Filed 1994·Granted Oct 13, 1998·36 cites·6 claims
- 4282US5338268AToroidal-race rolling-traction type transmissionTOROTRAK DEV LTD·Filed 1993·Granted Aug 16, 1994·33 cites·11 claims
- 4379US5308297ATransmissions of the toroidal-race rolling-traction typeTOROTRAK DEV LTD·Filed 1990·Granted May 3, 1994·30 cites·10 claims
- 4478US5232414ATransmissions of the toroidal-race rolling-traction typeTOROTRAK DEV LTD·Filed 1990·Granted Aug 3, 1993·33 cites·7 claims
- 4575US5308298AHydraulic control systemsTOROTRAK DEV LTD·Filed 1991·Granted May 3, 1994·29 cites·6 claims
- 4673US5217418ADrivelines for wheeled vehiclesTOROTRAK DEV LTD·Filed 1990·Granted Jun 8, 1993·40 cites·12 claims
- 4747US2013296096A1Continuously variable transmissionTOROTRAK DEV LTD·Filed 2013·Application pending·0 cites
- 4843US2013037144A1Fluid supply for continuously variable transmissionTOROTRAK DEV LTD·Filed 2011·Application pending·0 cites
- 4939US2015080171A1VariatorTOROTRAK DEV LTD·Filed 2013·Application pending·0 cites
- 5036US2013045831A1Drive mechanism for infinitely variable transmissionTOROTRAK DEV LTD·Filed 2010·Application pending·0 cites
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