US 11,854,753 B2
Safety switch actuation device
Leopold Latschbacher, Neustadtl a.d. Donau (AT); Christoph Russwurm, Ober-Grafendorf (AT); René Holzer, Scheibbs (AT); and Lukas Schwaigerlehner, Scheibbs (AT)
Assigned to Wittur Holding GmbH, Wiedenzhausen (DE)
Filed by Wittur Holding GmbH, Wiedenzhausen (DE)
Filed on Dec. 18, 2021, as Appl. No. 17/555,451.
Claims priority of application No. 202020107417.2 (DE), filed on Dec. 18, 2020.
Prior Publication US 2022/0199337 A1, Jun. 23, 2022
Int. Cl. H01H 13/20 (2006.01); H01H 13/14 (2006.01)
CPC H01H 13/20 (2013.01) [H01H 13/14 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A safety switch actuation device for keeping a pushbutton switch activated and deactivated remotely, the actuation device comprising:
a plunger which can be brought by external probing from a standby position, in which the plunger does not switch the pushbutton switch, to an active position, in which the plunger keeps said pushbutton switch actuated;
a remotely controllable linear drive;
a return spring; and
a return actuator, wherein the actuation device is designed in such a way that the plunger can be coupled to the return actuator by the remotely controllable linear drive, which is driven by a Bowden cable, under tension of the return spring, wherein after deactivation of the linear drive, the plunger is pressed by the return spring into a position more remote from the pushbutton switch, thereby entraining the plunger into the standby position.