Bistable two position valve

Details Bistable two position valve Bistable two position valve

1985-09-30

1987-03-10

Cohan, Alan

Fluid handling

Flow affected by fluid contact, energy field or coanda effect

Means to regulate or vary operation of device

13762544, 251 75, F16K 11062, F16K 120

Patent

active

046484272

ABSTRACT:
A switching mechanism and valve using the same wherein a two remote valve or switch positions are provided. The switching mechanism includes a valve operator having of outwardly extending port closures that move above a central pivot point. As the valve operator shifts between its two remote positions, each port closure closes or opens respectively a port associated with such port closure. A flat bearing surface is formed as part of the valve operator and is in a plane generally perpendicular to a line bisecting the angle between the two port closures. A roller, biased against that flat bearing surface is on a pivot arm also moveable about its remote pivotable end. The biased roller normally holds the valve or switch in one of its remote positions. As the valve operator is moved to its other remote position the roller rolls along the flat bearing surface such that no stable alignment ever occurs when the axis of the roller pivot arm is in line with a line between the pivot point of the pivot arm and the central pivot point of the valve operator.

REFERENCES:
patent: 224964 (1880-02-01), Stephenson
patent: 928459 (1909-07-01), Kieselhorst
patent: 1295638 (1919-02-01), Triggs
patent: 2995043 (1961-08-01), Lusk et al.

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