Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
POSITIVE CONTROL (DESMODROMIC) VALVE SYSTEMS FOR INTERNAL COMBUSTION ENGINES
Document Type and Number:
WIPO Patent Application WO/2012/048300
Kind Code:
A4
Abstract:
Various types of valve systems are disclosed herein. In one embodiment, a positive control reciprocating sleeve valve system for use with an internal combustion engine includes opening and closing rockers controlled by corresponding opening and closing cam lobes. In one aspect of this embodiment, interference can be designed into the valve control system to provide additional "hold-closed" force to hold the valve against its seat during a portion of the engine cycle. In another aspect of this embodiment, positive control valve systems can include compliant components and systems, hydraulic systems, pneumatic systems, and/or mechanical spring systems to control valve lash, facilitate sealing, etc.

Inventors:
CLEEVES, James, Montague (551 Simmit Drive, Redwood City, CA, 94062, US)
HAWKES, Michael (2301 Larkin St, #307San Francisco, CA, 94070, US)
ANDERSON, William, H. (6260 Bridgeport Drive, Cameron Park, CA, 95682, US)
Application Number:
US2011/055485
Publication Date:
July 26, 2012
Filing Date:
October 07, 2011
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
PINNACLE ENGINES, INC. (1300 Industrial Road, Suite 1ASan Carlos, CA, 94070, US)
CLEEVES, James, Montague (551 Simmit Drive, Redwood City, CA, 94062, US)
HAWKES, Michael (2301 Larkin St, #307San Francisco, CA, 94070, US)
ANDERSON, William, H. (6260 Bridgeport Drive, Cameron Park, CA, 95682, US)
International Classes:
F01L1/30
Attorney, Agent or Firm:
VAN LOY, Michael, D. et al. (Mintz Levin Cohn Ferris Glovsky and Popeo, PCOne Financial Cente, Boston MA, 02111, US)
Download PDF: