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:
Sep. 22, 1981
Filed:
Mar. 16, 1978
Applicant:
Inventor:
Giulio Mazzini, Florence, IT;
Assignee:
WABCO Westinghouse, Turin, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60J / ; B61D / ; E05B / ;
U.S. Cl.
CPC ...
105341 ; 16 66 ; 49141 ; 49362 ; 105348 ; 160331 ; 277 53 ;
Abstract
A sliding door for railroad cars which may be manually operable but is also provided with a pneumatic device and a pneumatic control circuit operably connected to the door for closing the door by power operation, which pneumatic device, after effecting power closing of the door, is automatically vented of all pneumatic pressure and operably disconnected from the door so as not to offer any resistance during manual operation, and, in particular, during an opening phase of the door by manual operation subsequently to a pneumatic closing phase of the same door.