Reverse lever actuated keyless chuck

Details Reverse lever actuated keyless chuck Reverse lever actuated keyless chuck

1996-06-22

1998-07-07

Bishop, Steven C.

Chucks or sockets

Socket type

Obliquely guided reciprocating jaws

279140, 279902, B23B 3112

Patent

active

057757046

ABSTRACT:
A chuck for use with a manual or powered driver having a rotatable drive shaft includes a body and a primary gripping mechanism utilizing a three-jaw assembly actuated by a nut driven by a sleeve. The chuck includes a supplemental tightening mechanism. The supplemental tightening mechanism includes at least one L-shaped lever having a portion disposed between the nut and nose section of the body of the chuck. The nut can include a passage through which the lever passes. The lever bar will push off a hardened washer disposed against the body and thus force the nut forward to produce an enhanced gripping force on the tool through the jaws. The supplemental tightening mechanism can further include a detent to restrain relative rotation between the nut and the sleeve. The detent can include a groove formed in the nut and a resilient retaining clip held by the sleeve to selectively engage the groove.

REFERENCES:
patent: 2458626 (1949-01-01), Norige
patent: 3000642 (1961-09-01), Kawasaki
patent: 3311384 (1967-03-01), Kawasaki
patent: 5125673 (1992-06-01), Huff et al.
patent: 5215317 (1993-06-01), Jordan et al.
patent: 5261679 (1993-11-01), Nakamura
patent: 5322303 (1994-06-01), Nakamura
patent: 5499828 (1996-03-01), Salpaka et al.
patent: 5615899 (1997-04-01), Sakamaki

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