Tool driving or impacting – Impacting devices – Hammer head driven by electric motor
Patent
1995-04-25
1996-12-24
Watts, Douglas D.
Tool driving or impacting
Impacting devices
Hammer head driven by electric motor
173121, B25D 1700, B23D 7900
Patent
active
055866077
ABSTRACT:
A manually operated tool for chipping material from a surface includes a plurality of axially extending needle-type chisels (8) located within a housing (1) and guided in a needle cage (12) positioned within the housing. The needle cage (12) is freely axially displaceable between a stop shoulder (15b) of a guide sleeve (14) and an anvil (17) both of which are axially displaceable within the housing. The guide sleeve (14) is pressed by a compression spring (16) against the anvil (17).
Donner Hans-Christian
Neumaier Anton
Hilti Aktiengesellschaft
Watts Douglas D.
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