Drill chuck with cushioned tightening ring

Details Drill chuck with cushioned tightening ring Drill chuck with cushioned tightening ring

2005-05-10

2005-05-10

Howell, Daniel W. (Department: 3722)

Chucks or sockets

Socket type

Obliquely guided reciprocating jaws

C279S902000

Reexamination Certificate

active

06889986

ABSTRACT:
A drill chuck has a chuck body formed with a plurality of forwardly open angled guide passages and with a radially open groove having an axially rearwardly directed front face and an axially forwardly directed rear face. Respective jaws displaceable in the passages each have a row of radially outwardly directed teeth exposed at the groove. A tightening ring engaged in the groove and having an internal screwthread meshing with the teeth of the jaws is formed with a front face axially confronting the front groove face and can rotate on the body about the axis. An angled front spring washer engaged between the front faces is elastically deformable on axial forward displacement of the tightening ring to permit limited relative axial movement of the ring and body.

REFERENCES:
patent: 3727931 (1973-04-01), Wightman et al.
patent: 3807745 (1974-04-01), Bent
patent: 5125673 (1992-06-01), Huff et al.
patent: 5174588 (1992-12-01), Reibetanz et al.
patent: 5765839 (1998-06-01), Rohm
patent: 6070884 (2000-06-01), Mack
patent: 6575478 (2003-06-01), Röhm et al.

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