Bellows actuator

Details Bellows actuator Bellows actuator

1991-11-22

1993-01-26

Look, Edward K.

Motors: expansible chamber type

With motive fluid valve

92 34, 92 48, 92 49, 92 90, 92 92, F15B 1108, F01B 1900

Patent

active

051814528

ABSTRACT:
A bellows actuator has at least one bellows chamber comprising at least three chamber segments arranged around an axis. Each of the chamber segments forms a radially outwardly extending protrusion comprising four chamber wall portions, which merge with one another along fold lines which extend peripherally and radially of the bellows chamber and converge radially outwardly to meet at radially outermost apexes of the chamber segments. The bellows actuator is expansible and contractible along the axis by flexure of the wall portions relative to one another about the fold lines in response to pressure changes within the bellows chamber.

REFERENCES:
patent: 2522401 (1950-09-01), Rava
patent: 3469502 (1969-09-01), Gardner
patent: 3721371 (1973-03-01), Dolveck
patent: 4464980 (1984-08-01), Yoshida
patent: 4939982 (1990-07-01), Immega et al.

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