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. 18, 1997
Filed:
Dec. 11, 1995
Applicant:
Inventors:
David F Reuter, Beavercreek, OH (US);
William D Cornwell, Beavercreek, OH (US);
Viswanath Seetharaman, Fairborn, OH (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ; F16K / ;
U.S. Cl.
CPC ...
25112902 ; 25112915 ; 251210 ; 3031192 ;
Abstract
A normally open solenoid valve is provided for brake system operation which includes a poppet utilizing a spherical end in conjunction with a valve seat to provide the primary control orifice of the valve. A sleeve is inserted into the main body of the valve with an annular edge provided on the poppet near the spherical end which operates in conjunction with the sleeve to provide a secondary control orifice downstream of the primary control orifice.