Machine element or mechanism – Mechanical movements – Reciprocating or oscillating to or from alternating rotary
Patent
1989-02-27
1991-01-15
Herrmann, Allan D.
Machine element or mechanism
Mechanical movements
Reciprocating or oscillating to or from alternating rotary
744248R, F16H 2524
Patent
active
049844776
ABSTRACT:
A driving device for producing substantially linear movement of a driver comprises a shaftless spiral rotatable around its longitudinal axis. The spiral encloses at least one sliding body which is provided with at least one element projecting from the sliding body which passes between two adjoining turns of the spiral. The sliding body co-operates with an element secured against rotational movement which prevents the sliding body from rotating with the spiral. An elongated element oriented in the axial direction of the spiral is connected at one end to the sliding body and at its other end to the element which is secured against rotational movement to form the driver. Upon rotation of the spiral, the sliding body and thereby the driver are moved in the axial direction of the spiral for moving the element secured against rotational movement.
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Cohen Julian H.
Herrmann Allan D.
Spirac Engineering AB
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