Workpiece-gripping chuck and method for controlling the same

Details Workpiece-gripping chuck and method for controlling the same Workpiece-gripping chuck and method for controlling the same

2006-02-09

2009-02-10

Kramer, Dean J (Department: 3652)

Handling: hand and hoist-line implements

Hook, hoistline, or grab type

Locking device

C294S119100, C294S907000, C901S037000, C901S038000, C901S046000

Reexamination Certificate

active

07488020

ABSTRACT:
A workpiece-gripping chuck includes a converting mechanism provided in a body, which converts a driving force from a rotary driving source into a displacement in the axial direction. First and second pistons of the converting mechanism are displaced in the axial direction under a rotary action of a pinion gear. Further, the first and second pistons are displaced in the axial direction, respectively, by supplying a pressure fluid from a first or second port formed in the body. A workpiece may be positioned by means of a pair of gripping members under the driving action of the rotary driving source, and the workpiece is further gripped by the gripping members by applying a pressing force of the pressure fluid in addition to the driving force.

REFERENCES:
patent: 4024959 (1977-05-01), Gruner
patent: 4255975 (1981-03-01), Debreuille
patent: 4632631 (1986-12-01), Dunlap
patent: 4707013 (1987-11-01), Vranish et al.
patent: 4808898 (1989-02-01), Pearson
patent: 5080415 (1992-01-01), Bjornson
patent: 5163729 (1992-11-01), Borcea et al.
patent: 6308431 (2001-10-01), Takanashi et al.
patent: 6309003 (2001-10-01), Bertini
patent: 6547258 (2003-04-01), Mandokoro et al.
patent: 23 55 971 (1975-05-01), None
patent: 7-328977 (1995-12-01), None

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