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:
Mar. 07, 2017
Filed:
Jul. 25, 2014
Delphi Technologies, Inc., Troy, MI (US);
Thomas H. Lichti, Victor, NY (US);
Delphi Technologies, Inc., Troy, MI (US);
Abstract
A camshaft phaser includes an input member; an output member defining an advance chamber and a retard chamber with the input member; a valve spool moveable between an advance position and a retard position and having a valve spool bore with a phasing volume and a venting volume defined therein such that the phasing volume is fluidly segregated from the venting volume; and a phasing check valve within the valve spool. The advance position allows oil to flow through the phasing check valve and through the phasing volume from the advance chamber to the retard chamber while preventing oil from flowing from the retard chamber to the advance chamber and the retard position allows oil to flow through the check valve and through the phasing volume from the retard chamber to the advance chamber while preventing oil from flowing from the advance chamber to the retard chamber.