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. 28, 2021
Filed:
Aug. 19, 2020
Schaeffler Technologies Ag & Co. KG, Herzogenaurach, DE;
Steven Burke, Fort Gratiot, MI (US);
Schaeffler Technologies AG & Co. KG, Herzogenaurach, DE;
Abstract
A central valve for a camshaft phaser includes a hollow cylindrical housing, a hydraulic unit, a control piston, a retaining ring, and a washer. The hollow cylindrical housing includes a first radial opening and a groove. The hydraulic unit is disposed in the hollow cylindrical housing and includes a second radial opening and a channel. The control piston is axially moveable in the hydraulic unit to adjust a flow of a hydraulic medium through the first radial opening, the second radial opening, and the channel. The retaining ring is disposed in the groove to retain the hydraulic unit and the control piston in the hollow cylindrical housing. The washer is disposed in the hollow cylindrical housing axially between the hydraulic unit and the retaining ring.