Push-to-open magnetic catch

Details Push-to-open magnetic catch Push-to-open magnetic catch

1976-06-15

1977-05-31

Moore, Richard E.

Closure fasteners

Magnetic

E05C 1916

Patent

active

040265889

ABSTRACT:
A push-to-open magnetic catch for cabinet doors and the like has a housing and within the housing is a rectangular magnet mounted at one end of a pivotal lever. The housing is ordinarily so positioned within the cabinet that the forward edge of the magnet projects forwardly of the cabinet to receive and make magnetic contact with the closing door or with an armature plate mounted thereon. In normal closed position, an overtravel space exists between the inner surface of the door or armature plate and the cabinet. The lever has a forward edge so contoured that when, to open, the closed door is pushed inwardly into the overtravel space, the lever is cammed pivotally inwardly, thereby pulling the magnet inwardly along a line or path guided by the housing. This separates the magnet from the door, and allows the force of a spring-loaded plunger, which has been pushing outwardly against the door, to push the door outwardly when the inward force is removed. When the plunger thus moves outwardly, it contacts the rearward edge of the lever and pushes it forwardly, to a limit position, thereby returning the magnet to its original position. A frictional detent arrangement, keeps the magnet in its proper position while the door is being moved toward, or away from, the magnet.

REFERENCES:
patent: 84771 (1868-12-01), Shannon
patent: 1370681 (1921-03-01), Bloxsom
patent: 1783711 (1930-12-01), Hanny
patent: 2673111 (1954-03-01), Teetor
patent: 3934909 (1976-01-01), Van Natter

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