Assignee
TWIN DISC INC
65 granted patents·5 pending applications·1,751 citations·filing 1975–2024
Top patents by PatentIndex Score
70 records- 0198US4483684ATorsional impulse damper for direct connection to universal joint drive shaftTWIN DISC INC·Filed 1983·Granted Nov 20, 1984·159 cites·6 claims
- 0298US4459873AMarine propulsion systemTWIN DISC INC·Filed 1982·Granted Jul 17, 1984·268 cites·8 claims
- 0397US4836809AControl means for marine propulsion systemTWIN DISC INC·Filed 1988·Granted Jun 6, 1989·118 cites·19 claims
- 0493US6443286B1Modulatable power transmission clutch and a marine transmissionTWIN DISC INC·Filed 2001·Granted Sep 3, 2002·50 cites·7 claims
- 0593US4549443AMulti-speed reversible transmission of countershaft constructionTWIN DISC INC·Filed 1983·Granted Oct 29, 1985·70 cites·6 claims
- 0692US7617026B2Programmable trim control system for marine applicationsTWIN DISC INC·Filed 2006·Granted Nov 10, 2009·81 cites·21 claims
- 0792US4186829AModulatable power transmission clutchTWIN DISC INC·Filed 1977·Granted Feb 5, 1980·47 cites·3 claims
- 0892US3951008APower transmitting mechanism for starting a high inertia load and having retarder means for auxiliary starting motorTWIN DISC INC·Filed 1975·Granted Apr 20, 1976·65 cites·14 claims
- 0991US11346198B2Fracturing of a wet well utilizing an air/fuel mixtureTWIN DISC INC·Filed 2020·Granted May 31, 2022·2 cites·20 claims
- 1090US11891884B2Electro-hydraulic high-pressure oilfield pumping systemTWIN DISC INC·Filed 2020·Granted Feb 6, 2024·3 cites·18 claims
- 1190US11795799B2Compound electro-hydraulic frac pumping systemTWIN DISC INC·Filed 2022·Granted Oct 24, 2023·2 cites·16 claims
- 1290US4734861AElectronic control for motor vehicle transmissionTWIN DISC INC·Filed 1986·Granted Mar 29, 1988·52 cites·7 claims
- 1389US10228027B2Integrated multi-position force lubrication systemTWIN DISC INC·Filed 2017·Granted Mar 12, 2019·6 cites·11 claims
- 1488US10392915B2Fracturing utilizing an air/fuel mixtureTWIN DISC INC·Filed 2016·Granted Aug 27, 2019·3 cites·20 claims
- 1588US4372434AInterleaved friction plate clutch having means to prevent plate wobbleTWIN DISC INC·Filed 1981·Granted Feb 8, 1983·38 cites·24 claims
- 1686US6390866B1Hydraulic cylinder with anti-rotation mounting for piston rodTWIN DISC INC·Filed 2001·Granted May 21, 2002·42 cites·12 claims
- 1786US4338832ASystem for shiftable multi-speed hydraulically operated power transmission and electronic controller thereinTWIN DISC INC·Filed 1980·Granted Jul 13, 1982·40 cites·13 claims
- 1886US4090414ATransmission control system for shuttle type vehiclesTWIN DISC INC·Filed 1977·Granted May 23, 1978·41 cites·9 claims
- 1985US6666312B2Modulatable power transmission clutch and a marine transmissionTWIN DISC INC·Filed 2002·Granted Dec 23, 2003·24 cites·4 claims
- 2082US4324387APower delivery system having a pressure modulated hydrodynamic retarder for controlling a loadTWIN DISC INC·Filed 1980·Granted Apr 13, 1982·40 cites·35 claims
- 2182US4275607APower transmission having power take-off shaft and fluid control means thereforTWIN DISC INC·Filed 1979·Granted Jun 30, 1981·39 cites·6 claims
- 2281US10865630B2Fracturing utilizing an air/fuel mixtureTWIN DISC INC·Filed 2019·Granted Dec 15, 2020·1 cites·20 claims
- 2381US4451238AShaft brake for marine propulsion systemTWIN DISC INC·Filed 1982·Granted May 29, 1984·29 cites·7 claims
- 2480US4308729AUniversal joint slip spline connection having concentric one-way valvesTWIN DISC INC·Filed 1980·Granted Jan 5, 1982·29 cites·12 claims
- 2579US4419086ATrunnion seal and cross venting system for a cardan-type universal jointTWIN DISC INC·Filed 1981·Granted Dec 6, 1983·28 cites·4 claims
- 2676US5127858AControl means for marine engines and transmissionsTWIN DISC INC·Filed 1991·Granted Jul 7, 1992·23 cites·10 claims
- 2776US4305710AShip propulsion transmission having a torque converter for driving a fixed pitch propeller in reverseTWIN DISC INC·Filed 1979·Granted Dec 15, 1981·27 cites·25 claims
- 2875US4442730AVehicle transmission system and a single lever control device thereforTWIN DISC INC·Filed 1981·Granted Apr 17, 1984·36 cites·10 claims
- 2974US10359087B2Hydraulic power take-off with brake disconnect system for industrial drivesTWIN DISC INC·Filed 2017·Granted Jul 23, 2019·2 cites·12 claims
- 3074US5016724AInter-axle differential having a friction-type biasing clutch and wheel slip sensing control means thereforTWIN DISC INC·Filed 1989·Granted May 21, 1991·32 cites·9 claims
- 3174US4009571ATorque converter having adjustably movable stator vane sections and actuator means thereforTWIN DISC INC·Filed 1976·Granted Mar 1, 1977·22 cites·17 claims
- 3272US9670972B2Trimmed lock-up clutchTWIN DISC INC·Filed 2014·Granted Jun 6, 2017·2 cites·32 claims
- 3372US5651288AHydraulically operated friction clutch with shift shock prevention and method of using sameTWIN DISC INC·Filed 1995·Granted Jul 29, 1997·32 cites·20 claims
- 3472US4396101AInterleaved friction plate clutch having means to prevent plate wobbleTWIN DISC INC·Filed 1981·Granted Aug 2, 1983·19 cites·1 claims
- 3572US4316722APropulsion system for submarineTWIN DISC INC·Filed 1980·Granted Feb 23, 1982·20 cites·21 claims
- 3670US4068747AMulti-plate clutch having means to prevent plate flutterTWIN DISC INC·Filed 1976·Granted Jan 17, 1978·20 cites·11 claims
- 3769US11187253B2Clutch stack wear sensor system for a power transmission deviceTWIN DISC INC·Filed 2021·Granted Nov 30, 2021·0 cites·14 claims
- 3867US4635495AMulti-speed reversible power transmissionTWIN DISC INC·Filed 1985·Granted Jan 13, 1987·22 cites·4 claims
- 3967US4012908ATorque converter having adjustably movable stator vane sectionsTWIN DISC INC·Filed 1976·Granted Mar 22, 1977·25 cites·8 claims
- 4064US10914327B2Clutch stack wear sensor system for a power transmission deviceTWIN DISC INC·Filed 2018·Granted Feb 9, 2021·0 cites·21 claims
- 4161US11761319B2Fracturing of a deep or wet well utilizing an air/fuel mixture and multiple stage restriction orifice assemblyTWIN DISC INC·Filed 2022·Granted Sep 19, 2023·0 cites·20 claims
- 4260US4763765ACone clutch transmissionTWIN DISC INC·Filed 1987·Granted Aug 16, 1988·14 cites·4 claims
- 4360US4015488ADigital electronic controller for power transmissionTWIN DISC INC·Filed 1975·Granted Apr 5, 1977·20 cites·4 claims
- 4459US5456345ASelf-adjusting clutch mechanismTWIN DISC INC·Filed 1994·Granted Oct 10, 1995·16 cites·23 claims
- 4558US5333712ASynchronized clutchTWIN DISC INC·Filed 1993·Granted Aug 2, 1994·17 cites·25 claims
- 4658US4070926ASwing control for craneTWIN DISC INC·Filed 1975·Granted Jan 31, 1978·14 cites·8 claims
- 4757US4313533AInterleaved friction plate type clutch having clutch cooling passage means including a reservoir, weir and slotTWIN DISC INC·Filed 1980·Granted Feb 2, 1982·12 cites·9 claims
- 4857US4189043AAutomatic self-adjusting plate type clutchTWIN DISC INC·Filed 1978·Granted Feb 19, 1980·12 cites·8 claims
- 4954US5533603AInternally-actuating and self-adjusting PTO clutch assemblyTWIN DISC INC·Filed 1995·Granted Jul 9, 1996·16 cites·22 claims
- 5053US4326433AHydraulically controlled power transmission having friction plate clutches for selectively engaging a plurality of change speed gearsTWIN DISC INC·Filed 1979·Granted Apr 27, 1982·12 cites·8 claims
Showing the top 50 of 70 patent records by PatentIndex Score.
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