Pet Door

Details Pet Door Pet Door

1993-12-07

1995-11-28

Cuomo, Peter M.

Movable or removable closures

Mounted for optional movements

One closure movable separately from or with other closure

160180, 2922515, E05D 1548

Patent

active

054696593

ABSTRACT:
A pet door has a frame defining an access aperture and a pivotally-hung aperture-closing flap therein with a catch to secure the flap against opening in one direction. The catch is supported on a toggle joint spring-biased against one of two adjacent abutments. The second abutment, which is displaceable, is normally positioned to prevent collapse of the toggle joint whereby the catch is maintained in a flap-securing position. The second abutment is part of a magnetically-activated catch control mechanism, comprising (i) a rotationally mounted disc or lever bearing the abutment and (ii) a rockable lever interconnected with the disc. The rockable lever bears magnet(s) co-operable with a key magnet on a pet collar. When the key magnet is presented to the pet door, it repels the magnet(s) on the rockable lever causing the interconnected disc to rotate, displacing the second abutment. A thrust in said one direction on the flap, pressing on the catch, effects collapse of the toggle joint, disengaging the catch from the flap and thus allowing the latter to open.

REFERENCES:
patent: 4022263 (1977-05-01), Beckett et al.
patent: 4216743 (1980-08-01), Cohen
patent: 4969292 (1990-11-01), Reid et al.
patent: 4991350 (1991-02-01), Kirk

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