Opening actuator for collet chuck

Details Opening actuator for collet chuck Opening actuator for collet chuck

2007-04-10

2007-04-10

Howell, Daniel W. (Department: 3722)

Gear cutting, milling, or planing

Milling

Cutter spindle or spindle support

C279S004120, C279S134000

Reexamination Certificate

active

10728116

ABSTRACT:
A chuck actuator has a hollow housing having a chamber and having a front end and a rear end. A ring in the chamber forms with the front end thereof a front compartment and a piston in the chamber between the ring and the rear end forms an intermediate compartment with the ring and a rear compartment with the rear end. A stem on the piston projecting forward through the ring and through the intermediate and front compartments is adapted to engage and open a chuck and is formed with a region of enlarged diameter. The piston is shiftable between a rear position with the enlarged-diameter region offset rearward from the ring and with the stem forming with the ring an axially extending passage between the front and intermediate compartments and a front position with the enlarged-diameter portion fitting snugly in the ring and substantially closing the passage.

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