Bellows

Details Bellows Bellows

1999-08-16

2000-09-19

Tolin, Gerald

Electricity: circuit makers and breakers

Fluid pressure

Flow-responsive type

92 5R, 200832, H01H 3534

Patent

active

061215597

ABSTRACT:
A bellows has a first portion that is formed with a hollow protrusion and can be actuated by pressing on it and a second portion formed with an annular wall defining an opening. The hollow protrusion fits within the opening. Actuation of the first portion causes a fluid to flow through the hollow protrusion and opening, and the fluid tends to force the protrusion against the annular wall. In another embodiment, the first and second portions are sealed along planer front and rear walls. A nut us provided having teeth for clamping the device to an air tube. The bellows can be used to control any device, including a pressure switch, valve or gauge, that is controlled by a change in fluid pressure applied thereto.

REFERENCES:
patent: 3300604 (1967-01-01), Straub
patent: 3710314 (1973-01-01), Bell
patent: 3900710 (1975-08-01), Potter
patent: 4647738 (1987-03-01), Diamond
patent: 4754107 (1988-06-01), Tracey
patent: 4894652 (1990-01-01), Eckstein
patent: 5155309 (1992-10-01), Dwyer
patent: 5461207 (1995-10-01), Van Lear
patent: 5728984 (1998-03-01), Miller
patent: 5743555 (1998-04-01), Durrani
patent: 5962826 (1999-10-01), Bassin

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