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:
Mar. 17, 1981
Filed:
Oct. 04, 1979
Applicant:
Inventor:
Robert T Fischer, Homewood, IL (US);
Assignee:
Miner Enterprises, Inc., Geneva, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B61D / ; B61D / ; B61D / ;
U.S. Cl.
CPC ...
1052 / ; 1053 / ;
Abstract
A plate welded to what is the leading edge of the slide gate door, as the slide gate door would move in the opening direction, engages a portion of the peripheral face of a cam. The plate is above the supports on which the gate rides. In the event that a force is applied to the door urging the door in the opening direction, that portion of the cam cams the distal side of the plate toward those supports, whereby the plate acts as a spring resisting that force and in preventing the door significantly moving in the opening direction. The cam can be rotated to another position at which the plate and door are free to move below it to the opened position.