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:
Apr. 25, 2000
Filed:
Dec. 18, 1998
Applicant:
Inventor:
Richard B Shaddle, Sandwich, IL (US);
Assignee:
Thrall Car Manufacturing Company, Chicago Heights, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65D / ;
U.S. Cl.
CPC ...
10537707 ; 2203671 ;
Abstract
A vented hatch coaming for a covered hopper car permits unloading without opening the hatch cover. The vented hatch includes an opening in the coaming for the passage of air. Preferably, a housing is positioned adjacent the ring opening to exclude contaminants and, where extraordinary sanitation is required, a filter element.