Tool driving or impacting – Impacting devices – Hammer head driven by spring
Patent
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.
Makarov Mikhailovich
Sudnishnikov Boris Vasilievich
Tupitsyn Konstantin Konstantinovich
Tupitsyn Sergei Konstantinovich
Pate, III William E.
Purser Ernest R.
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