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:
Nov. 08, 1994
Filed:
Mar. 02, 1993
Applicant:
Inventor:
Steven D Wallestad, Kansas City, MO (US);
Assignee:
Midland Brake, Inc., Kansas City, MO (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60T / ;
U.S. Cl.
CPC ...
303-972 ; 303-975 ;
Abstract
A proportioning module for automatically changing the ratio of delivery pressure to control pressure according to whether a mode control pressure is present or absent. When the mode control pressure is present, the proportioning module is deactivated, causing the delivery pressure to be substantially equivalent to control pressure. When the mode control pressure is absent, the proportioning module functions to provide control pressure to delivery pressure ratios which are dependant upon the control pressure and the resultant delivery pressure.