Expansible chamber devices – With means to control flow of non-working arresting fluid... – Flow control means positioned between chambers having a...
Patent
1989-01-17
1990-03-13
Garrett, Robert E.
Expansible chamber devices
With means to control flow of non-working arresting fluid...
Flow control means positioned between chambers having a...
92 10, 92 11, 92108, 92113, 188300, 188313, 267 6426, F15B 1522, F15B 1526
Patent
active
049074954
ABSTRACT:
A composite hydraulic cylinder apparatus which has a pneumatic cylinder mechanism, a braking oil hydraulic cylinder mechanism associated concentrically with the pneumatic cylinder mechanism, an oil passage for communicating between the front chamber and the rear chamber of the oil hydraulic cylinder mechanism, and a control valve provided in the oil passage for controlling the flow of the oil. Thus, the apparatus provides high positioning accuracy, a large holding force, economy and small size as a movable element control system, and can be applied as a buffer for the movable element.
REFERENCES:
patent: 3176801 (1965-04-01), Huff
patent: 3830139 (1974-08-01), Wachsman
patent: 3905425 (1975-09-01), Jackson
patent: 3929057 (1975-12-01), Kondo
patent: 4445671 (1984-05-01), Reuschenbach et al.
patent: 4526088 (1985-07-01), Reuschenbach
patent: 4528894 (1985-07-01), Crosby
patent: 4765225 (1988-08-01), Birchard
Garrett Robert E.
Kapsalas George
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