Cylinder apparatus

Details Cylinder apparatus Cylinder apparatus

1997-04-16

1999-03-02

Scherbel, David A.

Work holders

With fluid means

Plural positioning means sequentially operated

269 25, 269 32, B23Q 308

Patent

active

058760253

ABSTRACT:
A spring chamber (17) is formed above a piston (11) inserted into a housing (7), and the spring chamber (17) is communicated with an outside of the housing (7) through a breathing passage (41). A pressurized fluid is supplied to and discharged from an actuation chamber (18) formed below the piston (11). A clamping member (4) connected to the piston (11) is urged to a clamping position (X) by a clamping spring (21) within the spring chamber (17). A check valve seat (45) and a check valve chamber (46) are arranged orderly in the breathing passage (41). A checking member (47) within the check valve chamber (46) is pushed to the check valve seat (45) by a checking spring (48) for valve closing.

REFERENCES:
patent: 2863285 (1958-12-01), Pomeroy
patent: 3700227 (1972-10-01), Sessody
patent: 4508327 (1985-04-01), Ersoy
patent: 4812109 (1989-03-01), Yonezawa
patent: 4830249 (1989-05-01), Mirenda et al.
patent: 4850828 (1989-07-01), Yonezawa
patent: 4909493 (1990-03-01), Yonezawa
patent: 5108079 (1992-04-01), Yonezawa et al.
patent: 5113899 (1992-05-01), Yonezawa

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