Bit holding system for a power hand tool

Details Bit holding system for a power hand tool Bit holding system for a power hand tool

1998-04-27

1999-11-30

Bishop, Steven C.

Chucks or sockets

Socket type

Obliquely guided reciprocating jaws

279140, 279902, B23B 3112

Patent

active

059928590

ABSTRACT:
A bit holding system includes a transmission block coupled to the transmission shaft of a power hand tool, a plurality of clamping rods obliquely radially mounted in respective oblong holes on the transmission block to hold a bit at a front end of the transmission block, the clamping rods each having a threaded rear end extended out of the transmission block, a first impact member having a tapered, threaded inside wall threaded onto the threaded rear ends of the clamping rods and a plurality of equiangularly spaced and backwardly extended bottom teeth, a spring supported second impact member mounted around the transmission block between the first impact member and the reversible motor drive, the second impact member having teeth acting with the teeth of the first impact member, and a shell for holding down by hand to stop the second impact member from rotary motion, causing it to impact a resisting force to the first impact member upon each rotation cycle of the first impact member when the first impact member is turned with the clamping rods and the transmission block.

REFERENCES:
patent: 4951955 (1990-08-01), Sakamaki
patent: 4958840 (1990-09-01), Palm
patent: 5411275 (1995-05-01), Huff et al.

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