Automatic pet door

Details Automatic pet door Automatic pet door

2005-11-22

2005-11-22

Redman, Jerry (Department: 3634)

Movable or removable closures

Mounted for optional movements

One closure movable separately from or with other closure

C049S360000

Reexamination Certificate

active

06966147

ABSTRACT:
An automatic pet door system is disclosed. The automatic pet door system has a rectangular frame mounted between studs of a wall defining a passage for entry and exit of a pet. A door slidably moves within the frame between a lower closed position for closing the passage and an upper open position for opening the passage. The door is lifted by a drive means having a motor pulling a cable attached to the door. The motor is energized by a control means in response to a signal received from a magnetic transmitter worn by a pet when the pet approaches the door. A locking means prevents movement of the door upwardly from the closed position unless the door is moved by way of the drive means.

REFERENCES:
patent: 4322913 (1982-04-01), Himmer
patent: 4908987 (1990-03-01), Dickson et al.
patent: 5072544 (1991-12-01), Breck, Jr.
patent: 5177900 (1993-01-01), Solowiej
patent: 5872516 (1999-02-01), Bonge, Jr.
patent: 6691463 (2004-02-01), Richmond

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