DH

Donald Haefner

EA Eaton: 15 patents #151 of 3,708Top 5%
SC Schaeffler: 10 patents #424 of 2,365Top 20%
CE Cummins Engine: 1 patents #304 of 765Top 40%
Overall (All Time): #154,129 of 4,157,543Top 4%
26
Patents All Time

Issued Patents All Time

Showing 25 most recent of 26 patents

Patent #TitleCo-InventorsDate
10557384 Coupling for a camshaft phaser arrangement for a concentric camshaft assembly Steven Burke, Jochen Thielen, Inhwa Chung, Andrew Mlinaric, Vaishnavi Pawade 2020-02-11
10400638 Camshaft phaser arrangement for a concentrically arranged camshaft assembly Kevin Poole, Jeffrey Mossberg, Andrew Mlinaric, Steven Burke 2019-09-03
9988947 Fast acting switching valve train system for valve deactivation 2018-06-05
9334767 Roller lifter lubrication guide David Kehr 2016-05-10
7721696 Cam follower for a valve drive of an internal combustion engine Matthew Evans, Debora Manther, Richard Best 2010-05-25
7637238 Hydraulic valve play compensating element Lu Zhu 2009-12-29
7401584 Adjustable engine 2008-07-22
7380531 Variable valve drive for changing the control timing of cam-actuated gas-exchange valves Florin Bugescu 2008-06-03
7322328 Variable cam follower for an internal combustion engine 2008-01-29
7237520 Hydraulic valve-lash-adjusting element (HVA) 2007-07-03
6694934 Variable valve actuator for internal combustion engine David M. Preston, David H. Scharnweber 2004-02-24
6641111 Dislodging a throttle plate from ice formation Edwin D. Lorenz, David M. Preston 2003-11-04
6487898 Engine cylinder pressure sensor with thermal compensation element Dennis R. Zitny, David A. Belfi 2002-12-03
5758307 Normalized misfire detection method Joseph S. Mazur 1998-05-26
5559280 Combustion chamber pressure transducer and method of making same John A. Kovacich, Bruce M. Hatton, Donald M. Stout, Lawrence J. Ryczek, Arlene M. Klumb 1996-09-24
5282523 Travel limit stop for a motor driven actuator Robert Mueller, Don J. Krzysik 1994-02-01
5199401 Engine throttle servoactuator control system Walter K. O'Neil, Wayne E. Klindt, Mark L. Leonard, Daniel R. Parks, Don K. St. John 1993-04-06
5161504 Dual mode electrical servoactuator Philip Guest, Richard F. Neuman, David M. Preston 1992-11-10
5152360 Throttle cable intervention device David M. Preston 1992-10-06
5138211 Spherical cam clutch for servoactuator David M. Preston 1992-08-11
4969432 Torch ignitor for lean burn engines David H. Scharnweber, Lyle O. Hoppie 1990-11-13
4970427 Electrode arrangement for establishing a sustained electrical arc David H. Scharnweber, Lyle O. Hoppie 1990-11-13
4950965 Throttle control servoactuator Andrew A. Kenny, Loren H. Uthoff, Jr. 1990-08-21
4940109 Split arm throttle cable intervention device David M. Preston 1990-07-10
4865003 Method and apparatus for activating fuel prior to combustion David H. Scharnweber, Lyle O. Hoppie 1989-09-12