Tool driving or impacting – Impacting devices – Hammer head driven by electric motor
Patent
1973-04-17
1977-04-05
Purser, Ernest R.
Tool driving or impacting
Impacting devices
Hammer head driven by electric motor
173119, 173139, 175 56, B25D 1106
Patent
active
040156710
ABSTRACT:
An electric hammer comprising a housing accommodating a stator, a hammer piston reciprocably mounted in the stator, and a shock absorber including a resilient member and an intermediate member disposed between the hammer piston and the resilient member, the mass of the intermediate member being greater than that of the hammer piston.
REFERENCES:
patent: 1853695 (1932-04-01), Mortimer
patent: 2055001 (1936-09-01), Blomquist
patent: 2536971 (1951-01-01), Weyandt et al.
patent: 2861778 (1958-11-01), Spurlin
patent: 2949909 (1960-08-01), Macchioni et al.
patent: 3460637 (1969-08-01), Schulin
Borisov Vladimir Mikhailovich
Bush Kherbert Zhanovich
Eletsky Vladimir Alexeevich
Goldshtein Boris Grigorievich
Goppen Albert Adlofovich
Pate III William F.
Purser Ernest R.
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