Tool, particularly a boring tool

Details Tool, particularly a boring tool Tool, particularly a boring tool

1983-11-25

1985-12-10

Schran, Donald R.

Tool driving or impacting

Impacting devices

Impact transmitting anvil

173159, B23B 4516

Patent

active

045573387

ABSTRACT:
This invention relates to a fluid pressure operated tool of the type having an axially reciprocatable and rotatable shaft to which a work piece such as a rock drill is attachable. The tool is driven by a planetary piston type of motor with a rotary externally toothed gear member having rotational and orbital movement relative to a surrounding internally toothed gear member. The externally toothed gear member is connected to a rotatable valve member and reciprocatable and rotatable output shaft by a cardan type shaft. The output shaft has a piston part which is subject to being alternately pressurized in opposite directions to produce the reciprocating motion.

REFERENCES:
patent: 1846817 (1932-02-01), Smith, Jr.
patent: 1922329 (1933-08-01), Richardson
patent: 2887920 (1959-05-01), Austin
patent: 3055441 (1962-10-01), Merrison
patent: 3953158 (1976-04-01), Uppal
patent: 4145167 (1979-03-01), Baatrup
patent: 4323335 (1982-04-01), Hansen
patent: 4432709 (1984-02-01), Hansen

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