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:
Jul. 25, 1989
Filed:
Mar. 14, 1988
Applicant:
Inventors:
Jean-Claude Dumas, Soisy Sous Montmorency, FR;
Alain Van Hemelryck, Bondy, FR;
Assignee:
Societe Anonyme dite: Alsthom, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60T / ; B60T / ; B61H / ;
U.S. Cl.
CPC ...
303 12 ; 188356 ; 303 86 ;
Abstract
A feed circuit for feeding a railway train braking system and usable in conjunction with a compressed air system or with a vacuum system, the feed circuit including an air compressor (1) and being characterized in that it further includes a static vacuum pump (14) powered by the compressed air delivered by the compressor.