Machine element or mechanism – Mechanical movements – Oscillation or reciprocation to intermittent unidirectional...
Patent
1979-02-28
1981-03-24
Staab, Lawrence J.
Machine element or mechanism
Mechanical movements
Oscillation or reciprocation to intermittent unidirectional...
74160, 74578, 200156, F16H 2702
Patent
active
042572835
ABSTRACT:
Within a housing of a multi-position switch there is arranged a forwardly and backwardly indexible stepping mechanism comprising two actuation elements which can be individually brought into engagement with a pinion of a character support or carrier by accomplishing a linear working movement. Each actuation element comprises a push-button, a switching or indexing element and a preferably hairpin-shaped spring element, or is operatively connected with a coil spring mounted in the housing. By means of each push-button the related actuation element is moved in a first direction, whereby its switching element, guided by a first pin along a cam or equivalent structure, is deflected, and a second pin comes into engagement with the pinion, so that this pinion, which is rotatably mounted upon a shaft, can be moved in a predetermined direction against the restoring force of a latching spring engaging into a tooth gap of the pinion by means of a latching cam or nose. The return of such actuation element, after completion of the indexing step, is accomplished by the restoring force of the related spring element.
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Haller Heinrich
Wermelinger Hans
Contraves AG
Kleeman Werner W.
Staab Lawrence J.
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