Motorized pet door apparatus

Details Motorized pet door apparatus Motorized pet door apparatus

1990-04-09

1991-12-17

Kannan, Philip C.

Movable or removable closures

Treadle or impact initiated operator

Switch in approach to closure

49138, 49168, 49322, 49360, 119 19, E05F 1300

Patent

active

050725440

ABSTRACT:
An electrically powered pet door assembly for use in a home or building. Each assembly includes a frame which is secured to an exterior surface of a building, a panel slidably mounted within parallel tracks of the frame, a rotatable and translational drive assembly for vertically raising the panel, a centrifugal brake for controlling the speed of the vertical opening or closing of the panel and a treadle for activating the rotational and translational drive assembly.

REFERENCES:
patent: 1743247 (1930-01-01), Stark
patent: 1921849 (1933-08-01), Talen
patent: 3039038 (1962-06-01), Weible
patent: 3821865 (1974-07-01), Steinke
patent: 4322913 (1982-04-01), Himmer
patent: 4523408 (1985-06-01), McConnell
patent: 4760872 (1988-08-01), Hale, Jr.

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