Hydraulic linear impact tool

Details Hydraulic linear impact tool Hydraulic linear impact tool

1978-07-20

1982-02-09

Schroeder, Werner H.

Tool driving or impacting

Impacting devices

With means to cause or control advance of hammer head

91291, B25D 918

Patent

active

043146120

ABSTRACT:
A hydraulically operated impact tool is provided for performing land-based or undersea tasks including hammering, chipping, scraping, punching, and cutting. The tool's features include a spring (preferably hydroelastic) for storing impact-stroke energy, a configuration of valves which eliminates flow in the supply and return lines during the impact stroke, and a control approach which provides operator selection of either single-blow or continuous-cycling operation.

REFERENCES:
patent: 1598426 (1926-08-01), Ditson
patent: 2069122 (1937-01-01), Weaver
patent: 2113161 (1938-04-01), Osborne
patent: 2978044 (1961-04-01), Baines
patent: 3322038 (1967-05-01), Dobson
patent: 3599731 (1971-08-01), Lawlis
patent: 3971448 (1976-07-01), Grover et al.
patent: 4026193 (1977-05-01), Olmsted
patent: 4034817 (1977-07-01), Okada
patent: 4082032 (1978-04-01), Swenson

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