Hennessy; David R.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Hennessy; David R..The latest application filed is for "transmission system with planetary gearing operable in forward and reverse modes".
- Hennessy; David R. - Burnsville MN
- Hennessy; David R. - Minneapolis MN
| Patent | Date |
|---|---|
| Pump and wiper assembly, associated viscous clutch and associated method Grant 11,441,621 - Hennessy September 13, 2 | 2022-09-13 |
| Transmission System With Planetary Gearing Operable In Forward And Reverse Modes App 20220268198 - Hennessy; David R. ; et al. | 2022-08-25 |
| Shaft output viscous clutch Grant 11,333,207 - Hennessy May 17, 2 | 2022-05-17 |
| Accessible Clutch Attachment Assembly And Method App 20220099015 - Larson; Benjamin ; et al. | 2022-03-31 |
| Pump And Wiper Assembly, Associated Viscous Clutch And Associated Method App 20220074453 - Hennessy; David R. | 2022-03-10 |
| Energy harvesting clutch control assembly, valve assembly, and electrically actuated clutch Grant 11,260,739 - Hennessy , et al. March 1, 2 | 2022-03-01 |
| Shaft Output Viscous Clutch App 20210301884 - Hennessy; David R. | 2021-09-30 |
| Energy Harvesting Clutch Control Assembly, Valve Assembly, And Electrically Actuated Clutch App 20210138888 - Hennessy; David R. ; et al. | 2021-05-13 |
| Viscous clutch and method of operation Grant 10,941,819 - Hennessy , et al. March 9, 2 | 2021-03-09 |
| Viscous clutch and associated electromagnetic coil Grant 10,612,606 - Hennessy , et al. | 2020-04-07 |
| Viscous clutch fluid capture system Grant 10,612,605 - Hennessy , et al. | 2020-04-07 |
| Viscous clutch fluid capture system Grant 10,578,172 - Hennessy , et al. | 2020-03-03 |
| Modular viscous clutch Grant 10,557,508 - Hennessy Feb | 2020-02-11 |
| Fan blade surface features Grant 10,539,157 - Schilling , et al. Ja | 2020-01-21 |
| Modular Viscous Clutch App 20190219108 - Hennessy; David R. | 2019-07-18 |
| Viscous Clutch And Associated Electromagnetic Coil App 20190178310 - Hennessy; David R. ; et al. | 2019-06-13 |
| Viscous Clutch and Method of Operation App 20190107158 - Hennessy; David R. ; et al. | 2019-04-11 |
| Viscous Clutch Fluid Capture System App 20180355925 - Hennessy; David R. ; et al. | 2018-12-13 |
| Fan Blade Surface Features App 20180283403 - Schilling; Hugh ; et al. | 2018-10-04 |
| Viscous Clutch Fluid Capture System App 20180274602 - Hennessy; David R. ; et al. | 2018-09-27 |
| Heat exchanger blower system Grant 10,082,350 - Stone , et al. September 25, 2 | 2018-09-25 |
| Fan Blade Surface Features App 20180030996 - Schilling; Hugh ; et al. | 2018-02-01 |
| Heat Exchanger Blower System App 20170108299 - Stone; Stephen Anthony ; et al. | 2017-04-20 |
| Heat exchanger blower method Grant 9,568,260 - Stone , et al. February 14, 2 | 2017-02-14 |
| Heat Exchanger Blower System And Associated Method App 20150153122 - Stone; Stephen Anthony ; et al. | 2015-06-04 |
| Integrated viscous clutch Grant 8,887,888 - Hennessy , et al. November 18, 2 | 2014-11-18 |
| Integrated Viscous Clutch App 20120279820 - Hennessy; David R. ; et al. | 2012-11-08 |
| Viscous clutch with eddy current reduction Grant 8,100,241 - Hennessy , et al. January 24, 2 | 2012-01-24 |
| Viscous Clutch With Eddy Current Reduction App 20110209962 - Hennessy; David R. ; et al. | 2011-09-01 |
| Viscous clutch Grant 7,946,400 - Hennessy , et al. May 24, 2 | 2011-05-24 |
| Viscous clutch Grant 7,938,240 - Hennessy , et al. May 10, 2 | 2011-05-10 |
| Electromagnetically actuated viscous clutch Grant 7,854,307 - Hennessy , et al. December 21, 2 | 2010-12-21 |
| Viscous Clutch App 20100140040 - Hennessy; David R. ; et al. | 2010-06-10 |
| Viscous Clutch App 20090101463 - Hennessy; David R. ; et al. | 2009-04-23 |
| Electromagnetically Actuated Viscous Clutch App 20090084650 - Hennessy; David R. ; et al. | 2009-04-02 |
| Torque and/or rotational control apparatus Grant 5,242,036 - Hennessy , et al. September 7, 1 | 1993-09-07 |
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