Issued Patents All Time
Showing 25 most recent of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8561583 | Phaser with oil pressure assist | — | 2013-10-22 |
| 8256393 | Variable cam timing controls mounted in the camshaft | Roger T. Simpson, Franklin R. Smith | 2012-09-04 |
| 7500928 | Randomized chain system | John Hummel | 2009-03-10 |
| 7404778 | High-performance silent chain | — | 2008-07-29 |
| 7318401 | Variable chamber volume phaser | Christopher J. Pluta | 2008-01-15 |
| 7056248 | Silent chain | — | 2006-06-06 |
| 7048665 | Power transmission chain having links with lateral spacing elements | Tim J. Ledvina, Dennis Bubel, Mark E. Michaels, Mark A. Giovannini | 2006-05-23 |
| 6966289 | VCT mechanism incorporating camshaft bearing journal | — | 2005-11-22 |
| 6595882 | Power transmission chain having links with lateral spacing elements | Dennis Bubel, Mark E. Michaels, Mark A. Giovannini | 2003-07-22 |
| 6554728 | Fastenerless chain snubber | Roger Young, D. Laurence Parks | 2003-04-29 |
| 6497633 | Continuous manufacture of push type CVT belt bands utilizing spiral winding & welding to form tube and slitting tube to form band of predetermined width | Mark S. Ingianni, Douglas S. Fornell | 2002-12-24 |
| 6406394 | Power transmission chain having links with lateral spacing elements | Dennis Bubel, Mark E. Michaels, Mark A. Giovannini | 2002-06-18 |
| 6123638 | Three-way phased continuously variable transmission chain with strut retention | — | 2000-09-26 |
| 5657725 | VCT system utilizing engine oil pressure for actuation | J. Christian Haesloop | 1997-08-19 |
| 5367992 | Variable camshaft timing system for improved operation during low hydraulic fluid pressure | Franklin R. Smith, Curt A. Wykstra | 1994-11-29 |
| 5361735 | Belt driven variable camshaft timing system | Stanley K. Dembosky, Franklin R. Smith | 1994-11-08 |
| 5205249 | Variable camshaft timing system for internal combustion engine utilizing flywheel energy for reduced camshaft torsionals | George L. Markley | 1993-04-27 |
| 5172659 | Differential pressure control system for variable camshaft timing system | Franklin P. Smith | 1992-12-22 |
| 5152261 | Variable camshaft timing system utilizing changes in length of portions of a chain or belt | Franklin R. Smith | 1992-10-06 |
| 5107805 | Camshaft with extra cam to increase the magnitude of torque pulsations therein | J. Christian Haesloop, Timothy J. Ledvina, Philip J. Mott | 1992-04-28 |
| 5107804 | Variable camshaft timing for internal combustion engine | Thomas Becker, Stanley K. Dembosky, Franklin R. Smith | 1992-04-28 |
| 5046460 | Variable camshaft timing for internal combustion engine | Franklin R. Smith, Stanley K. Dembosky | 1991-09-10 |
| 5002023 | Variable camshaft timing for internal combustion engine | Franklin R. Smith | 1991-03-26 |
| 4873879 | Variable speed transmission | Guenter Neumann, Curt A. Wykstra | 1989-10-17 |
| 4862845 | Variable camshaft timing system | Franklin R. Smith | 1989-09-05 |