Underwater gas discharge hammer with gas reservoir

Details Underwater gas discharge hammer with gas reservoir Underwater gas discharge hammer with gas reservoir

1976-11-29

1977-11-29

Staab, Lawrence J.

Tool driving or impacting

Impacting devices

Hammer head constitutes piston of drive motor

173DIG1, B25D 900

Patent

active

040601390

ABSTRACT:
An underwater gas discharge type hammer is provided with a gas reservoir into which expended ram driving gas exhausts to avoid aeration of incoming water which surrounds the gas discharge device of the hammer. The gas resevoir is also arranged as a diving bell to minimize pressure changes under the hammer ram and thereby to maximize ram stroke and improve sharpness of ram impact on the hammer anvil.

REFERENCES:
patent: 1005770 (1911-10-01), Clark
patent: 1958041 (1934-05-01), Hansen
patent: 2110331 (1938-03-01), Gartin
patent: 2633832 (1953-04-01), Spurlin
patent: 3646598 (1972-02-01), Chelminski
patent: 3714789 (1973-02-01), Chelminski
patent: 3721095 (1973-03-01), Chelminski
patent: 3817335 (1974-06-01), Chelminski
patent: 3881557 (1975-05-01), Gendron et al.
patent: 3935908 (1976-02-01), Pepe
patent: 3958647 (1976-05-01), Chelminski

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