Tool driving or impacting – Impacting devices – Impact transmitting anvil
Patent
1975-02-18
1976-07-27
Murtagh, John E.
Tool driving or impacting
Impacting devices
Impact transmitting anvil
91235, 91300, B25D 920, B25D 904
Patent
active
039714489
ABSTRACT:
A fluid operated tool is provided which is operable particularly for purposes of causing the linear movement of a tool member in at least one direction. The tool includes a main body, a trigger, an On-Off valve spool, a main piston, a reversing assembly, an accumulator and means for attaching the tool member to the tool. The main body is provided with a plurality of bores in which the On-Off valve spool, the main piston, the reversing assembly, and the accumulator are respectively positioned, and a plurality of channels which function to interconnect the bores. The On-Off valve spool is supported in one of the bores in such a manner as to be operatively connected to the trigger whereby the valve spool moves between first and second positions in response to the actuation of the trigger thereby to selectively open and close various ones of the channels formed in the main body. The main piston is supported in a longitudinally extending bore whereby to be reciprocal therein between a first position wherein the main piston drives the tool member toward one end of the tool, the tool member being attached to the main body through the operation of means provided for this purpose, and a second position wherein the piston is spaced from the aforementioned one end of the tool. The main piston is shiftable between its first and second positions by fluid pressure applied alternately to selective faces thereof in accordance with predetermined fluid flow paths which are established in the channels by virtue of the respective positions which the reversing assembly and the valve spool alternately occupy. The accumulator which is positioned in another bore of the main body whereby to be movable therein functions as a source of stored energy.
REFERENCES:
patent: 2951468 (1960-09-01), Hecke
patent: 3232176 (1966-02-01), Henning et al.
patent: 3399602 (1968-09-01), Klessig
patent: 3411592 (1968-11-01), Montabert
patent: 3739863 (1973-06-01), Wohlwend
Brown Gordon Eugene
Crover Stephen Earl
Murtagh John E.
Pate III William F.
The Stanley Works
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