Rotary to linear motion converter

Details Rotary to linear motion converter Rotary to linear motion converter

1991-10-31

1993-02-23

Braun, Leslie A.

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

744248R, 744248C, F16H 2702

Patent

active

051879921

ABSTRACT:
A motion converter used with an input element rotatable about an axis and an output element displaceable axially relative to the input element has an axially nondisplaceable support provided with a first external screwthread of predetermined diameter, pitch, and hand centered on the axis and a second external screwthread provided on the output element centered on the axis and of the same diameter and pitch as the first screwthread but of opposite hand. A roller having respective first and second ridged portions respectively meshing with the screwthreads has a mechanical coupling for maintaining the first and second roller portions aligned axially with each other. Formations between the first and second roller portions axially couple them to each other and to the rotary input element so that on roling of the roller portions on the screwthreads the roller portions and input element are displaced axially a predetermined distance relative to the support and the output element is displaced through twice this distance.

REFERENCES:
patent: 2438236 (1948-03-01), Strom
patent: 3313178 (1967-04-01), Saunders
patent: 3595094 (1971-07-01), Lemor
patent: 3726151 (1973-04-01), Lemor
patent: 4183266 (1980-01-01), Osumi

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