Chucks or sockets – Expanding – Fluid-pressure actuator
Patent
1990-07-27
1993-02-16
Bishop, Steven C.
Chucks or sockets
Expanding
Fluid-pressure actuator
118500, 269 481, 279 217, 294 93, B23B 3140
Patent
active
051864770
ABSTRACT:
Disclosed is a chucking device for chucking a drum to keep it vertical while the drum is immersed in a coating liquid to be coated with the coating liquid. The chucking device comprises upper and lower pressure members having tapered peripheral surfaces at their ends facing each other. An annular elastic member is fitted between the tapered peripheral surfaces. The pressure members are constantly urged toward each other. When chucking a drum, the lower pressure member is moved away from the upper pressure member by means of compressed air so as to contract the elastic member, thereby allowing the pressure members and the elastic member to be inserted into the drum. Then, the compressed air is released, allowing the pressure members to contact each other. This causes the elastic member to be pressed outward by the tapered peripheral surfaces to tightly contact the inner surface of the drum. Then, the drum is moved upward together with the elastic member until it abuts against a positioning portion of the upper pressure member.
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patent: 4867368 (1989-09-01), Tesch
patent: 4927205 (1990-05-01), Bowler et al.
Kitaura Katsuya
Nakazawa Toru
Bishop Steven C.
Mita Industrial Co. Ltd.
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