Shutter for animal-watering valve

Details Shutter for animal-watering valve Shutter for animal-watering valve

1990-10-17

1991-11-19

Mancene, Gene

Animal husbandry

Animal controlling or handling

Body sling

251339, 13761411, A01K 700

Patent

active

050657003

ABSTRACT:
A shutter assembly for an animal-watering valve which is operable by a small animal moving a lever arm from side to side. The primary purpose of the shutter is to prevent the animal from stuffing material between the lever arm and the water passage and thereby render the valve inoperable i.e. in a full on, full off or leaking mode. The shutter includes a disc mounted on the lever arm which substantially covers the annular opening between the lever arm and the water passage formed in the valve housing. To insure operablility of the valve at elevated water pressures, a pressure equalization chamber may be formed in the valve to equalize the water pressure on the shutter when the valve is in the closed position.

REFERENCES:
patent: 2939424 (1960-06-01), Frederiksen
patent: 3550560 (1970-12-01), Edstrom
patent: 4006716 (1977-02-01), Cross
patent: 4187804 (1980-02-01), von Taschitzki
patent: 4320891 (1982-02-01), Cairns
patent: 4338884 (1982-07-01), Atchley et al.
patent: 4402343 (1983-09-01), Thompson
patent: 4406253 (1983-09-01), Atchley et al.

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