Tool driving or impacting – Impacting devices – Length of cyclic travel of hammer head selectively adjustable
Patent
1985-09-12
1987-02-24
Yost, Frank T.
Tool driving or impacting
Impacting devices
Length of cyclic travel of hammer head selectively adjustable
173119, 173124, 279 1SJ, 408226, B25D 1106, B25D 1708
Patent
active
046450157
ABSTRACT:
A powered impact instrument comprising a spring-loaded head mounted at one end of a housing; a spring-loaded striker mounted within the housing; a block which slides reciprocally within the housing to which the striker is attached; a drive for the block which draws the block toward the rear of the housing; a sear which releasably couples the block to the drive to permit the block to draw the striker back against its spring, and which releases the block at a selected point of each stroke of the block so that the spring drives the striker against the head in order that the head may provide a high impacting force on the object being impacted thereby. An adjustable trigger is also provided by which the displacement of each stroke of the striker, and thus the impact by which it strikes the head, may be controlled. A unique coupler releasably attaches different tools to the head.
REFERENCES:
patent: 682492 (1901-09-01), Payton
patent: 2298845 (1942-10-01), Schmied
patent: 2898893 (1959-08-01), Rohrer et al.
patent: 3074155 (1963-01-01), Cootes et al.
patent: 3788403 (1974-01-01), Mitchell
patent: 4006787 (1977-02-01), Rumpp et al.
patent: 4035100 (1977-07-01), Kruger et al.
Beecher Keith D.
Phan Hien H.
Yost Frank T.
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