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:
Dec. 31, 2019
Filed:
Jan. 30, 2018
Ford Global Technologies, Llc, Dearborn, MI (US);
Ram Sudarsan Devendran, Dearborn, MI (US);
Steven Anatole Frait, Milan, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
A vehicle transmission includes a plurality of clutches, a shaft, and a pressure relief valve. The plurality of clutches each define a balance dam chamber. The shaft partially defines a pressurized fluid circuit that includes each balance dam chamber. The shaft also defines an outlet. The pressure relief valve is disposed within the shaft between the pressurized fluid circuit and the outlet. The pressure relief valve is configured to open at a threshold pressure of the fluid circuit, wherein the threshold pressure decreases as rotational speed of the shaft increases.