Fire extinguishers – Apparatus which isolates flames from non-burning area
Patent
1976-04-20
1978-06-13
Peters, Jr., Joseph F.
Fire extinguishers
Apparatus which isolates flames from non-burning area
180 65, 299 12, 310 88, H02K 510
Patent
active
040943615
ABSTRACT:
A fire safety transmission apparatus comprising an explosion-proof container, an adapter plate secured to the container, a cylindrical sleeve mounted to the adapter plate defining a central bore, allowing communication with the interior of the container. The sleeve bore is stepped, defining seats for a plurality of ball bearing races mounted therein. A rotatable stepped shaft having a diameter adapted to fit within the central bore rests on the ball bearing races. The shaft is connected to a motor mounted in the explosion-proof container with the spacing defined between the inner wall of the cylindrical sleeve and the outer surface of the freely rotating shaft being sized a predetermined tolerance for a predetermined length sufficient to prevent a flame from passing therethrough.
REFERENCES:
patent: 2465436 (1949-03-01), Eckert
patent: 2910882 (1959-11-01), Wellauer
Lester Construction Company
Pekar John A.
Peters Jr. Joseph F.
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