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:
Aug. 22, 1978
Filed:
Jun. 23, 1977
Henry K Berry, Newport News, VA (US);
Other;
Abstract
A quick-closing fire gate is provided having specific application to sectionalized production facilities using vibratory conveyors to transport volatile substances. The conveyor passes through a portal defined by a gate housing at each barrier wall. The gate door or blade initially positioned above the housing is knife-edged to sever the conveyor during its downward translation and is forced flush against the gate housing by the interaction of opposed inclined surfaces on the blade and its support structure. The inclined surfaces furthermore function to eliminate gate rebound by dissipating the kinetic energy of the falling blade and redirecting reaction forces away from the line of blade travel. The rapidity of gate operation is accomplished by a photosensitive cell detonating an explosive bolt which releases a pressurized piston connected to the gate blade.