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. 01, 2000
Filed:
Aug. 14, 1998
Applicant:
Inventors:
Sanjay Manilal Patel, El Paso, TX (US);
Duane Zedric Collins, El Paso, TX (US);
Assignee:
General Motors Corporation, Detriot, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
192-33 ; 25112902 ; 25112915 ;
Abstract
A transmission and control has a torque converter and clutch which is controlled between torque converter operation and torque converter clutch operation. The switch between these operations is controlled by a solenoid valve and a TCC apply valve. The solenoid valve is a normally open valve and includes a plunger that is spring loaded against a poppet valve to control the static pressure in the torque converter, during non-operating conditions of a vehicle, at or above a predetermined value.