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:
Feb. 10, 2004
Filed:
Feb. 05, 2002
Robert C. Warnke, Salem, WI (US);
Sonnax Industries, Inc., Bellows Falls, VT (US);
Abstract
A manual valve for use within the hydraulic control system of Chrysler automatic transmissions. The present manual valve includes flow control structures to vary its standard functions. In a preferred embodiment the manual valve includes a secondary control land, which blocks and redirects hydraulic fluid to an alternate exhaust channel within the present valve when Park gear range is selected. A control orifice meters flow within the alternate exhaust channel and generates a predetermined backpressure to the pressure regulator valve, which provides an increased flow of hydraulic fluid to the torque converter in the Park gear range. This effectively eliminates delayed engagement of the transmission upon shifting into the Drive and Reverse gear ranges. In addition, the present manual valve includes a reverse metering land, which regulates the effect of fluid shock on the reverse servo piston when the Reverse gear range is selected.