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. 27, 1989
Filed:
May. 12, 1988
Applicant:
Inventors:
Lawrence E Vaughn, Watertown, NY (US);
Walter E Rojecki, Watertown, NY (US);
Thomas H Engle, Cape Vincent, NY (US);
Assignee:
General Signal Corporation, Stamford, CT (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B60T / ;
U.S. Cl.
CPC ...
303 37 ; 303 82 ;
Abstract
A modulation valve device for governing pressure in a brake pipe has coaxial accelerating and releasing valves provided wherein accelerated application and release pistons are dovetailed together to reduce the size and the weight of the modulating device.