Hydraulic chuck

Details Hydraulic chuck Hydraulic chuck

1997-09-29

1999-09-21

Pitts, Andrea L.

Chucks or sockets

With fluid-pressure actuator

Radially reciprocating jaws

279 409, 279 65, B23B 522

Patent

active

059543469

ABSTRACT:
A hydraulic chuck for a drill string has a hydraulic actuator to operate the jaws. The actuator remains stationery while the spindle is rotated and a pair of skirts attached to the actuator cover the bearing assemblies. The jaws are supported in slots in the spindle and are part cylindrical to reduce stress in the spindle. The chuck is secured to a drive unit by bolts received in open slots in an attachment flange to facilitate attachment of the chuck after routine maintenance.

REFERENCES:
patent: 2906540 (1959-09-01), Butterworth et al.
patent: 3692320 (1972-09-01), Lindelof et al.
patent: 5125776 (1992-06-01), Muller et al.

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