Tool holder for impact tool

Details Tool holder for impact tool Tool holder for impact tool

1978-10-11

1981-04-21

Briggs, William R.

Chucks or sockets

With fluid-pressure actuator

Socket type

279 1ME, B23B 3130

Patent

active

042629179

ABSTRACT:
A tool holder for an impact tool. The tool is driven by an actuating rod, and both the actuating rods and the tool have a taper which, when the tool is installed narrow toward each other. They are surrounded by a collet, shaped as a ring and having an opening to receive each of the tapers. Each opening has an internal wall with a matching taper. The taper angles fall within the cone of friction. The collet is expanded by the wedging action of the two sets of tapers. Its springback forces hold the tool to the actuating rod. For removing the tool, the collet has a fluid pressure fitting through which fluid under pressure can be injected into the region between the rod and tool to release one of them from the collet. Preferably the collet is formed so the tool is released before the collet is released from the actuating rod.

REFERENCES:
patent: 2944523 (1960-07-01), Werstein
patent: 3608650 (1971-09-01), Matsusaka
patent: 3609969 (1971-10-01), Gerber
patent: 3989260 (1976-11-01), Zonkov et al.

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