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:
Jun. 14, 1983
Filed:
Oct. 05, 1981
Applicant:
Inventor:
Christopher A Cripe, Coatesville, PA (US);
Assignee:
The Bi-Modal Corporation, Greenwich, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60T / ;
U.S. Cl.
CPC ...
303 / ; 188195 ; 303 / ; 303 40 ; 1052 / ;
Abstract
A control valve is provided for use in brake applications in air-spring equipped railroad and highway vehicles, particularly convertible rail-highway semi-trailers. Such vehicles usually employ pneumatic brake cylinders. The control valve combines the functions of a relay valve with two distinct output limiting characteristics, namely, service and emergency, which output limiting characteristics depend upon vehicle weight is indicated by air spring pressure. The control valve also produces an automatic minimum output to prevent total loss of braking should air spring pressure be lost due to failure.