Pneumatic hammer lift

Details Pneumatic hammer lift Pneumatic hammer lift

1989-01-19

1991-01-22

Watts, Douglas D.

Tool driving or impacting

With work engaging means supporting drive

176 32, 176141, E21C 900

Patent

active

049863703

ABSTRACT:
An apparatus for lifting a pneumatic hammer from the hammer's work surface. A pneumatic lift attachment is provided having a support housing. Attached to the support housing is a lift plate, containing a guide hole and an adjustable chain, for securing a pneumatic hammer to the lift plate. Defined within the housing is an air cylinder containing a piston having a piston rod. The piston is responsive to air supplied to the air cylinder, which drives the piston and piston rod downward. Attached to the bottom of the piston rod is a foot. As the foot meets the ground's surface, the support housing is lifted, freeing the attached hammer from the work surface.

REFERENCES:
patent: 2165904 (1939-07-01), Osgood
patent: 2643088 (1953-06-01), Hornack
patent: 2889723 (1959-06-01), Morrell
patent: 2917953 (1959-12-01), Badali
patent: 3189104 (1965-06-01), Jamer et al.
patent: 4757866 (1988-06-01), Szoke

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