Low profile self-latching knife hinge

Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Hinge – Including means to hold or retard hinged members against...

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Details

16332, 16321, E05D 1110

Patent

active

057847584

ABSTRACT:
A hinge for mounting a door for swinging between open and closed positions on a frame, the hinge including a door and frame wings mountable to the door and frame, respectively, a pivot interconnecting the wings to permit swinging of the door between the open and closed positions, a latching finger disposed in close spaced-opposing relation with the door wing and having first and second ends and including a large bend intermediate the first and second ends to provide spring action thereto, a second smaller reverse bend formed at the first distal end and arranged for overlapping engagement with a locking edge formed on the door wing, and a tab formed on the finger spaced-apart from the second bend for insertion into a cut-out formed on the door wing spaced-apart from the locking edge to steady the finger in connection with the door wing, the simultaneous overlapped engagement of the reverse bend and insertion of the tab in the cut-out providing significant locking power to the finger in the door wing; the second end of the finger extending toward the frame wing and having a cam formed thereon spaced-apart from the frame wing when the door is in the open position, a cam surface formed on the frame wing, opposite the cam, engageable with the cam to force the second distal end of the finger to swing away from the door wing as the door is swung toward the door-closing position, and a pocket in the cam surface adjacent the cam surface, the cam on the second distal end of the finger snapping resiliently toward the door wing and into the pocket as the door reaches the closed position and thereafter coacting with the pocket to latch the door releasably in the closed position.

REFERENCES:
patent: 539741 (1895-05-01), Ingram
patent: 3203031 (1965-08-01), Youngdale et al.
patent: 3432879 (1969-03-01), Gorton et al.
patent: 4329759 (1982-05-01), Lautenschlarger
patent: 5060344 (1991-10-01), Cress
patent: 5392493 (1995-02-01), Youngdale

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