The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 09, 1997
Filed:
Jun. 28, 1995
Applicant:
Inventor:
Jean-Pierre Boudy, Bievres, FR;
Assignees:
Automobiles Peugeot, Paris, FR;
Autmobiles Citroen, Neuilly-sur-Seine, FR;
Primary Examiner:
Int. Cl.
CPC ...
F01L / ;
U.S. Cl.
CPC ...
123 9014 ; 123 9065 ; 123 9012 ; 12318817 ; 251337 ;
Abstract
A pneumatic valve recoil system includes a piston that is unitary with the stem of a valve and which slides in a cylinder, such that the piston, valve stem, and cylinder cooperate to form a chamber containing a compressible fluid. The chamber is connected through a single calibration port to an oil-evacuation and fluid-pressure-regulating system located outside the cylinder head of the engine.