Reciprocating stroke length adjustment device and method

Details Reciprocating stroke length adjustment device and method Reciprocating stroke length adjustment device and method

1979-07-20

1981-04-28

Staab, Lawrence J.

Machine element or mechanism

Alternating-motion driven device with means during operation...

Stroke adjustable to zero and/or reversible in phasing

74127, F16H 3508

Patent

active

042638259

ABSTRACT:
The adjustment screw that regulates the stroke length of the piston that drives a diaphragm pump is rotated by means of a clutch and "diamond-back" screw structure. By selectively engaging either of two oppositely oriented one-way clutches, one of two respective associated nuts that ordinarily rotate freely on the "diamond-back" screw is blocked from rotation when the screw moves longitudinally in one direction. Thus locked, the nut compels the "diamond-back" screw to rotate, thereby turning the adjustment screw with which it is connected in order to produce the desired increase in piston stroke length.

REFERENCES:
patent: 791766 (1905-06-01), Furbish
patent: 2301413 (1942-11-01), Kilcup
patent: 2521816 (1950-09-01), Adams
patent: 2795191 (1957-06-01), Seter
patent: 3818806 (1974-06-01), Fumagalli

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