Assignee
HILLIARD CORP
US·24 granted patents·3 pending applications·741 citations·filing 1975–2014
Top patents by PatentIndex Score
27 records- 0196US9022195B2Bi-directional overrunning clutch having split roll cage and drag mechanismHILLIARD CORP·Filed 2013·Granted May 5, 2015·20 cites·19 claims
- 0296US6722484B2Bi-directional overrunning clutch for a primary drive axleHILLIARD CORP·Filed 2002·Granted Apr 20, 2004·53 cites·30 claims
- 0395US6622837B2Bi-directional overrunning clutch with automatic backdriveHILLIARD CORP·Filed 2001·Granted Sep 23, 2003·69 cites·30 claims
- 0495USRE38012EBi-directional overrunning clutchHILLIARD CORP·Filed 2001·Granted Mar 4, 2003·101 cites·27 claims
- 0594US5971123ABi-directional overrunning clutchHILLIARD CORP·Filed 1998·Granted Oct 26, 1999·95 cites·26 claims
- 0693US6629590B2Spring assembly for a bi-directional overrunning clutchHILLIARD CORP·Filed 2001·Granted Oct 7, 2003·62 cites·17 claims
- 0791US4355659ARotary plug valveHILLIARD CORP·Filed 1981·Granted Oct 26, 1982·146 cites·3 claims
- 0890US8840514B1Bi-directional overrunning clutch with improved indexing mechanismHILLIARD CORP·Filed 2014·Granted Sep 23, 2014·28 cites·28 claims
- 0988US9360059B2Twin ratio differential with bi-directional overrunning clutchHILLIARD CORP·Filed 2014·Granted Jun 7, 2016·13 cites·27 claims
- 1085US7410042B2Self-energizing pump for overrunning clutchHILLIARD CORP·Filed 2006·Granted Aug 12, 2008·17 cites·23 claims
- 1182US6286631B1Actuating lever for a wheelbarrow brakeHILLIARD CORP·Filed 2000·Granted Sep 11, 2001·26 cites·22 claims
- 1279US6857515B2Centrifugal clutchHILLIARD CORP·Filed 2003·Granted Feb 22, 2005·19 cites·20 claims
- 1376US6439355B1Electromagnetic spring-actuated brake systemHILLIARD CORP·Filed 2000·Granted Aug 27, 2002·18 cites·48 claims
- 1475US9272620B2True four wheel drive system for vehicleHILLIARD CORP·Filed 2013·Granted Mar 1, 2016·6 cites·15 claims
- 1562US7717250B2Tunable centrifugal clutchHILLIARD CORP·Filed 2007·Granted May 18, 2010·4 cites·23 claims
- 1655US6209697B1Small diameter wheel with overrunning clutch assemblyHILLIARD CORP·Filed 1999·Granted Apr 3, 2001·15 cites·32 claims
- 1749US4198832AFlexible drive couplingHILLIARD CORP·Filed 1978·Granted Apr 22, 1980·11 cites·5 claims
- 1847US9278422B2System for dressing a centrifugal clutchHILLIARD CORP·Filed 2014·Granted Mar 8, 2016·0 cites·6 claims
- 1947US5088895AVacuum pumping apparatusHILLIARD CORP·Filed 1990·Granted Feb 18, 1992·13 cites·11 claims
- 2047US2014338293A1Self-Cleaning Duplex FilterHILLIARD CORP·Filed 2013·Application pending·0 cites
- 2144US4040757ADrive couplingHILLIARD CORP·Filed 1975·Granted Aug 9, 1977·15 cites·2 claims
- 2243US7267770B2CartridgesHILLIARD CORP·Filed 2003·Granted Sep 11, 2007·1 cites·24 claims
- 2342US2006266611A1Spring assembly for an overrunning clutchHILLIARD CORP·Filed 2005·Application pending·0 cites
- 2437US2015024882A1Driven Clutch with Engine Braking for a Continuously Variable TransmissionHILLIARD CORP·Filed 2013·Application pending·0 cites
- 2528US4032107APlug valveHILLIARD CORP·Filed 1976·Granted Jun 28, 1977·4 cites·8 claims
- 2622US4469598AFilter deviceHILLIARD CORP·Filed 1982·Granted Sep 4, 1984·3 cites·12 claims
- 2714US4107050AFilter cartridgeHILLIARD CORP·Filed 1977·Granted Aug 15, 1978·2 cites·3 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →