Pneumatic percussive power tool

Details Pneumatic percussive power tool Pneumatic percussive power tool

1974-11-12

1976-08-17

Purser, Ernest R.

Tool driving or impacting

Impacting devices

Hammer head driven by spring

91239, 91243, 173137, 173162, B25D 904

Patent

active

039748855

ABSTRACT:
A power tool having a cylindrical housing accomodating a hammer and a two-step defining piston head, with central, rear and supplementary chambers in the housing, said head and supplementary chambers being constantly intercommunicated through a passage provided in the housing. The design of the power tool is aimed at minimizing vibrations of the housing and reduction of the forces applied to the handle during normal operation of the power tool.

REFERENCES:
patent: 864494 (1907-08-01), Sickel
patent: 1843958 (1932-02-01), Smith, Jr.
patent: 1861984 (1932-06-01), Slater
patent: 2259379 (1941-10-01), Herzbruch
patent: 2580747 (1952-01-01), Feucht
patent: 3007452 (1961-11-01), Lee
Abstract of USSR Inv. Cert. 286897.

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