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Class Information
Number: 123/90.48
Name: Internal-combustion engines > Poppet valve operating mechanism > Tappet
Description: Device comprising an element which is in direct contact with the actuating element (cam) and which transmits (ordinarily by reciprocatory movement) the motion of that element to other components of the operating mechanism.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7431001 |
Rail used as a torsional stop for the valve train of an internal combustion engine, and roller tappet arrangement |
Oct. 7, 2008 |
| 7426912 |
Oil supply circuit for cylinder deactivation system |
Sep. 23, 2008 |
| 7404386 |
Multi-step valve actuation system |
Jul. 29, 2008 |
| 7401584 |
Adjustable engine |
Jul. 22, 2008 |
| 7395792 |
Deactivation roller hydraulic valve lifter |
Jul. 8, 2008 |
| 7389757 |
Force-transmitting arrangement for a valve train of an internal-combustion engine |
Jun. 24, 2008 |
| 7387098 |
Cam follower |
Jun. 17, 2008 |
| 7380531 |
Variable valve drive for changing the control timing of cam-actuated gas-exchange valves |
Jun. 3, 2008 |
| 7373907 |
Valve lifter guide |
May. 20, 2008 |
| 7370617 |
Variable valve operating mechanism of four-stroke internal combustion engine |
May. 13, 2008 |
| 7363894 |
Switchable valve-drive component |
Apr. 29, 2008 |
| 7360517 |
Valve actuator for actuating a gas exchange valve of an internal combustion engine |
Apr. 22, 2008 |
| 7350491 |
Lash adjuster and valve system |
Apr. 1, 2008 |
| 7350486 |
Variable valve actuation mechanism |
Apr. 1, 2008 |
| 7350492 |
Guide gib for the valve operating mechanism of an internal combustion engine |
Apr. 1, 2008 |
| 7343888 |
Springless valve system |
Mar. 18, 2008 |
| 7341034 |
Hydraulic tappet |
Mar. 11, 2008 |
| 7325522 |
Valve drive for a cam-operated valve |
Feb. 5, 2008 |
| 7322329 |
Assembly process for hydraulic valve lifters to reduce variation in valve lift |
Jan. 29, 2008 |
| 7322328 |
Variable cam follower for an internal combustion engine |
Jan. 29, 2008 |
| 7311074 |
Guide rail for valve tappet of an internal combustion engine |
Dec. 25, 2007 |
| 7308879 |
Deactivation roller hydraulic valve lifter |
Dec. 18, 2007 |
| 7305952 |
Engine valve clearance adjusting method |
Dec. 11, 2007 |
| 7299777 |
Fastening of a bearing bolt to a roller tappet |
Nov. 27, 2007 |
| 7299778 |
Switchable cam follower |
Nov. 27, 2007 |
| 7296549 |
Hydraulic valve lash adjusters |
Nov. 20, 2007 |
| 7296548 |
Deactivation roller hydraulic valve lifter |
Nov. 20, 2007 |
| 7284519 |
Device for hydraulic lash adjustment |
Oct. 23, 2007 |
| 7284520 |
Valve lifter body and method of manufacture |
Oct. 23, 2007 |
| 7273026 |
Roller follower body |
Sep. 25, 2007 |
| 7263956 |
Valve lifter assembly for selectively deactivating a cylinder |
Sep. 4, 2007 |
| 7261075 |
Hydraulic support element |
Aug. 28, 2007 |
| 7246590 |
Valve train of an internal combustion engine comprising a tappet and a tappet pushrod |
Jul. 24, 2007 |
| 7246584 |
Force-transmitting arrangement for a valve train of an internal-combustion engine |
Jul. 24, 2007 |
| 7246585 |
Valve-deactivating hydraulic lifter having a vented internal lost motion spring |
Jul. 24, 2007 |
| 7246586 |
Wear-resistant coating and process for producing it |
Jul. 24, 2007 |
| 7246587 |
Deactivating element for a valve train of an internal combustion engine |
Jul. 24, 2007 |
| 7246589 |
Valve train of an internal combustion engine comprising a tappet and a tappet pushrod |
Jul. 24, 2007 |
| 7237520 |
Hydraulic valve-lash-adjusting element (HVA) |
Jul. 3, 2007 |
| 7219639 |
Drag lever of a valve mechanism in an internal combustion engine |
May. 22, 2007 |
| 7210439 |
Switching element for a valve train of an internal combustion engine |
May. 1, 2007 |
| 7210438 |
Internal combustion engine having valves with variable actuation each provided with a hydraulic tappet at the outside of the associated actuating unit |
May. 1, 2007 |
| 7210437 |
Periodically actuable tappet for a valve train or a pump drive |
May. 1, 2007 |
| 7207303 |
Switching element |
Apr. 24, 2007 |
| 7207302 |
Valve lifter body |
Apr. 24, 2007 |
| 7191745 |
Valve operating assembly |
Mar. 20, 2007 |
| 7185620 |
Cam follower of a valve drive of an internal combustion engine |
Mar. 6, 2007 |
| 7159552 |
Cup tappet for an internal combustion engine |
Jan. 9, 2007 |
| 7159553 |
Valve train for an internal combustion engine |
Jan. 9, 2007 |
| 7156061 |
Valve lifter |
Jan. 2, 2007 |
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