Switch actuator

Details Switch actuator Switch actuator

1990-10-31

1992-06-02

Williams, Howard L.

Electricity: circuit makers and breakers

Fluid pressure

Flow-responsive type

200 81R, 2003022, H01H 3738

Patent

active

051189097

ABSTRACT:
A switch actuator for use with an electrical switch sensitive to changes in air pressure includes a bellows formed of a flexible material. The bellows is attached to a nipple having a passageway for operatively connecting the actuator to the electrical switch. A sleeve is shrink fitted over the outer surface of the nipple, causing the bellows to be lodged between the sleeve and the nipple. The sleeve includes a tubular sidewall with an inwardly-extending flange defining a central opening. A button is slidable relative to the sleeve and includes a projection extending through the central opening to engage the bellows. Pressing the button deforms the bellows, thereby decreasing the volume of a cavity formed between the bellows and the nipple.

REFERENCES:
patent: 3904842 (1974-01-01), Gaver
patent: 4124789 (1978-11-01), Preece
patent: 4209678 (1980-06-01), Hussey
patent: 4577353 (1986-03-01), Veigener
patent: 4586204 (1986-05-01), Daniels
patent: 4681994 (1985-11-01), Nagata et al.
patent: 4754107 (1988-06-01), Tracey
patent: 4861231 (1989-08-01), Howard

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