Lockable drill chuck

Details Lockable drill chuck Lockable drill chuck

2007-09-12

2011-11-22

Gates, Eric A (Department: 3726)

Chucks or sockets

Socket type

Obliquely guided reciprocating jaws

C279S140000, C279S902000

Reexamination Certificate

active

08061719

ABSTRACT:
A drill chuck has a chuck body centered on and rotatable about an axis and formed with angled guides and respective jaws slidable in the guides axially forward and radially toward each other and axially rearward and radially away from each other. An annular tightening element is limitedly axially shiftable on the sleeve between a front position and a rear position. Screwthreads engaged between the element and the jaws axially displace the jaws forward on rotation of the element in a tightening direction and axially displace the jaws rearward on rotation of the element in an opposite loosening direction. Respective annular arrays of teeth angularly fixed on the element and the body are interengaged and prevent relative rotation of the element and body in the rear position of the element and are spaced and permit relative rotation of the element and body in the front position of the element.

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