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:
Jan. 30, 1990
Filed:
Mar. 22, 1989
Applicant:
Inventor:
William J Groos, Tinley Park, IL (US);
Assignee:
Pullman Leasing Company, Chicago, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60H / ;
U.S. Cl.
CPC ...
98-6 ; 553854 ; 55502 ; 55504 ; 98 52 ;
Abstract
The invention is directed to a venting device for admitting air into an enclosed container such as a railway car during discharge of material from the container. The device includes a securing member having an interlock for releasably retaining a replaceable filter member that is adapted to admit air into the container. The mounting member is adapted for mounting in an opening in the container member. A securing member has a one way interlook with the mounting member which may be overridden for disassembly and a releasable interlock with the filter member.