Chuck assembly for a tool bit

Details Chuck assembly for a tool bit Chuck assembly for a tool bit

1998-07-29

2000-04-25

Bishop, Steven C.

Chucks or sockets

Socket type

Obliquely guided reciprocating jaws

279902, B23B 3112

Patent

active

060535075

ABSTRACT:
A chuck assembly includes a hollow cylindrical chuck body having a surrounding wall that confines a receiving chamber adapted for receiving a tool bit, and that is formed with a plurality of angularly spaced inclined guiding channels which converge in a direction toward the front end and which are communicated with the receiving chamber. Each of the guiding channels has a rectangular cross-section. The surrounding wall is further formed with an annular retaining groove for accessing the guiding channels. A plurality of clamping members are received slidably and respectively in the guiding channels. Each of the clamping members has a cross-section corresponding to that of the respective one of the guiding channels, and an outer side surface formed with an external thread. A drive ring is provided rotatably in the retaining groove, and has an inclined inner surface formed with an internal thread for meshing with the external threads of the clamping members. Rotation of the drive ring relative to the chuck body results in linear movement of the clamping members in the guiding channels to clamp or loosen the tool bit that is extended into the receiving chamber.

REFERENCES:
patent: 661382 (1900-11-01), Noll
patent: 768396 (1904-08-01), North
patent: 845773 (1907-03-01), Gauss
patent: 872841 (1907-12-01), North
patent: 5348317 (1994-09-01), Steadings et al.
patent: 5918887 (1999-07-01), Miles

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