Vibrationless percussion tool

Details Vibrationless percussion tool Vibrationless percussion tool

1983-04-29

1985-03-26

Meister, James M.

Tool driving or impacting

Automatic control of power operated means

Tool advance causing or controlling means

173135, 173138, 173162R, 91229, E21B 100, F01L 2104

Patent

active

045067422

ABSTRACT:
A vibrationless percussion tool is disclosed characterized by use of a piston mounted for reciprocal movement against a constant pressure force within a casing to cyclically impact an anvil disposed adjacent the distal end of the casing. A spool valve is disposed within the interior of the piston and is adapted to travel in unison with the reciprocating piston except during mechanical actuation initiated adjacent the extreme downstroke and upstroke position of the piston within the casing. The constant pressure force is continuously applied to one side of the piston and by mechanical actuation of the spool valve, the volume disposed on the opposite side of the piston is alternatively vented and pressurized to cause reciprocation of the piston against the constant pressure source.

REFERENCES:
patent: 678759 (1901-07-01), Payton
patent: 682492 (1901-09-01), Payton
patent: 3010439 (1961-11-01), Mee
patent: 3024733 (1962-03-01), English
patent: 3851713 (1974-12-01), Fedosenko
patent: 3939755 (1976-02-01), Tabor

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