Impact force shaping head

Details Impact force shaping head Impact force shaping head

1983-03-16

1987-08-25

Halvosa, George E. A.

Tool driving or impacting

Impacting devices

Impact transmitting anvil

188299, 188314, 267119, 267127, 267137, 267 6411, B23B 4516

Patent

active

046886460

ABSTRACT:
An impact force shaping head includes an elongated casing having an interior wall, an open end and a closed end and contains a liquid. A piston is slidingly mounted within the casing and extends longitudinally beyond the open end of the casing. The piston sealingly engages the interior wall of the casing to define a liquid-filled first chamber between the piston and the closed end of the casing. A reservoir contains liquid and a conduit connects the first chamber with the reservoir. A control valve controls the flow of liquid through the conduit. The control valve is operative in response to changes in the pressure of the liquid contained in the first chamber.

REFERENCES:
patent: 1774614 (1930-09-01), Rode
patent: 2308404 (1943-01-01), Thornhill
patent: 2392061 (1946-01-01), Pfeiffer
patent: 2426155 (1947-08-01), Rode
patent: 2584339 (1952-02-01), Georgeff
patent: 3040841 (1962-06-01), Schultze
patent: 3086622 (1963-04-01), Shultze
patent: 3362210 (1968-01-01), Perrone
patent: 3596773 (1971-08-01), Peterson
patent: 3625321 (1971-12-01), Lutz
patent: 3706362 (1972-12-01), Faure
patent: 3945663 (1976-03-01), Duckett

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