Latch control for explosion relief panel

Details Latch control for explosion relief panel Latch control for explosion relief panel

1978-12-05

1980-06-17

Downey, Kenneth

Movable or removable closures

With specified means to effect emergency release to closure

49394, 49477, 220314, E05C 1502

Patent

active

042077060

ABSTRACT:
A latch control for an explosion relief panel is described in which the panel of relatively rigid construction, is normally retained in place by an arm pivotally mounted at one end, a pivotally mounted fork assembly at the other end of the arm which includes a magnetically responsive keeper which is loosely attached to the fork assembly, a magnet carried by the arm normally holding the keeper firmly to prevent rotation of the fork assembly about its pivotal axis. A plurality of springs exerting the desired force are interposed between the panel and the arm. The door carries a rigid post, adjustable in length, for movement with the panel against the force of the springs to apply a releasing force on the keeper to release the keeper and move the fork assembly to a release position so that the arm rotates and releases the panel. Seals for the panel are provided acting substantially in the plane of the panel to permit limited movement of the panel while retaining their sealing action and to avoid any loading by the seals on the panel in the direction of the pressure application on the panel.

REFERENCES:
patent: 1645171 (1927-10-01), Weiss
patent: 2514927 (1950-07-01), Bernhard
patent: 2551750 (1951-05-01), Liskey, Jr.
patent: 3339791 (1967-09-01), Frees

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