EP 0006967 B1 19820127 - STEP SWITCHING MECHANISM
Title (en)
STEP SWITCHING MECHANISM
Publication
Application
Priority
- CH 292278 A 19780317
- CH 1147678 A 19781108
Abstract (en)
[origin: US4257283A] 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.
IPC 1-7
IPC 8 full level
H01H 19/00 (2006.01)
CPC (source: EP US)
H01H 19/003 (2013.01 - EP US); Y10T 74/1529 (2015.01 - EP US); Y10T 74/1584 (2015.01 - EP US); Y10T 74/2141 (2015.01 - EP US)
Designated contracting state (EPC)
CH DE FR GB IT SE
DOCDB simple family (publication)
EP 0006967 A1 19800123; EP 0006967 B1 19820127; DE 2961939 D1 19820311; US 4257283 A 19810324
DOCDB simple family (application)
EP 79100792 A 19790315; DE 2961939 T 19790315; US 1601679 A 19790228