Haefner; Donald R.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Haefner; Donald R..The latest application filed is for "variable cam follower for an internal combustion engine".
- Haefner; Donald R. - Troy MI
- Haefner; Donald R. - Oak Park MI
- Haefner; Donald R. - Columbus IN
| Patent | Date |
|---|---|
| Variable cam follower for an internal combustion engine Grant 7,322,328 - Haefner January 29, 2 | 2008-01-29 |
| Hydraulic valve-lash-adjusting element (HVA) Grant 7,237,520 - Haefner July 3, 2 | 2007-07-03 |
| Variable cam follower for an internal combustion engine App 20060118074 - Haefner; Donald R. | 2006-06-08 |
| Hydraulic valve-lash-adjusting element (HVA) App 20060016410 - Haefner; Donald R. | 2006-01-26 |
| Variable valve actuator for internal combustion engine Grant 6,694,934 - Preston , et al. February 24, 2 | 2004-02-24 |
| Dislodging a throttle plate from ice formation Grant 6,641,111 - Lorenz , et al. November 4, 2 | 2003-11-04 |
| Dislodging A Throttle Plate From Ice Formation App 20030136935 - Lorenz, Edwin D. ; et al. | 2003-07-24 |
| Engine cylinder pressure sensor with thermal compensation element Grant 6,487,898 - Haefner , et al. December 3, 2 | 2002-12-03 |
| Normalized misfire detection method Grant 5,758,307 - Haefner , et al. May 26, 1 | 1998-05-26 |
| Combustion chamber pressure transducer and method of making same Grant 5,559,280 - Kovacich , et al. September 24, 1 | 1996-09-24 |
| Throttle control servoactuator Grant 4,950,965 - Kenny , et al. August 21, 1 | 1990-08-21 |
| Split arm throttle cable intervention device Grant 4,940,109 - Preston , et al. July 10, 1 | 1990-07-10 |
| Test apparatus and method for an engine mounted fuel pump Grant 4,206,634 - Taylor , et al. June 10, 1 | 1980-06-10 |
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