Cat ports

Details Cat ports Cat ports

1979-03-07

1983-12-20

Eskovitz, Jay N.

Animal husbandry

Milkers

With signals, indicators, registers, and timers

160 92, 335153, E06B 332

Patent

active

044210582

ABSTRACT:
This invention is concerned with devices for controlling movement of small animals, of the kind commonly known as "Cat Ports". The device is activated by an operating magnet worn by the small animal, which when the animal moves to pass through the device, closes a reed switch. The reed switch is adjustably pre-biased by a positionally adjustable permanent magnet, to afford the reed switch with a desired sensitivity, and a control circuit includes a re-setting coil to return the reed switch to its open position after a predetermined time interval. The device may readily be modified to control movement of animals in either, or both directions, to and from a designated area.

REFERENCES:
patent: 3305805 (1967-02-01), Tann
patent: 3976962 (1976-08-01), Seeley
patent: 4022263 (1977-05-01), Beckett et al.
patent: 4039985 (1977-08-01), Shlesinger, Jr.
patent: 4043079 (1977-08-01), Smith
patent: 4126841 (1978-11-01), Maeno

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