Expansible chamber devices – Annular working member or annular linearly extending chamber...
Patent
1989-06-01
1991-01-15
Wayner, William E.
Expansible chamber devices
Annular working member or annular linearly extending chamber...
92 61, F01B 1300
Patent
active
049845098
ABSTRACT:
A multistage cylinder actuator comprising a center cylinder unit and annular auxiliary cylinder units which are concentrically located around the center cylinder and which are removably attached to a common plate so as to independently operate.
REFERENCES:
patent: 2734494 (1956-02-01), Waterval
patent: 4424012 (1984-01-01), Westmoreland
patent: 4531451 (1985-07-01), Mouton
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