Excavating – Combined or convertible – Combined with clamp – grapple – or shear
Patent
1997-11-07
2000-05-09
Novosad, Christopher J.
Excavating
Combined or convertible
Combined with clamp, grapple, or shear
37904, E04G 2308
Patent
active
06058632&
ABSTRACT:
Apparatus for performing work by advancing a tool against a resistance thereto, and in particular, an excavator attachment or a rock concrete or engine crusher in which a pivoted jaw member (16) is advanced by a hydraulic ram (30) against a fixed plate (22) includes percussion device in the form of a hydraulic hammer acting against a fixed anvil (46,50) to assist the ram. Hydraulic fluid can be diverted from the ram to the hammer as required.
REFERENCES:
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patent: 5472308 (1995-12-01), Somero
Krupp Hydraulic Hammer HM50 Published by Krupp Industrietechnik (Believed--Actual Publn. Date Unknown) 1985 (Spare Parts List-Operating Instructures).
Novosad Christopher J.
Usher. Robert W.J.
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