Tooth of active-action excavator bucket

Excavating – Digging edge – Oscillating or reciprocating

Patent

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Details

37904, 172101, E02F 500

Patent

active

053535324

ABSTRACT:
A characteristic feature of the present invention is that a damping unit is rovided between the casing, impact tool and elements of a pneumatic hammer. The damping unit may have a different design.

REFERENCES:
patent: 4930584 (1990-06-01), Ching et al.
patent: 4959915 (1990-10-01), Roussin et al.
patent: 4984850 (1991-01-01), Jensen
patent: 5094017 (1992-03-01), Matsumoto et al.

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