Demolition hammer

Details Demolition hammer Demolition hammer

1989-09-29

1991-01-15

Watts, Douglas D.

Tool driving or impacting

Impacting devices

Hammer head moves in arcuate path or rotates

173119, E21C 2730

Patent

active

049846396

ABSTRACT:
A demolition hammer intended for attachment to a bracket or the like. The demolition hammer includes an adapter bracket which connects to the arm of a backhoe in place of the conventional bucket of the backhoe, and a hammer head spaced apart from the adapter bracket by a hammer spring arm cantilevered or pivotably mounted with respect to the adapter bracket. Repeated operation of the backhoe hydraulic cylinder which normally pivots the bucket will instead move the hammer into repetitive impacts with the concrete or other work surface undergoing demolition. The flexibility of the hammer spring adds a whipping action which increases the effective impact of such movement.

REFERENCES:
patent: 941093 (1909-11-01), Painter
patent: 1921503 (1933-08-01), Calderwood
patent: 2425018 (1947-08-01), Williams
patent: 3150724 (1964-09-01), Oelkers
patent: 3922017 (1975-11-01), Cobb

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