US 12,188,491 B2
Fail-safe drive and actuating drive with a fail-safe drive
Matthias Tritschler, Hartheim (DE); Peter Malus, Müllheim (DE); Lutz Stöcklin, Weisweil (DE); and Guido Koch, Karlsruhe (DE)
Assigned to AUMA Riester GmbH & Co. KG, Müllheim (DE)
Appl. No. 17/924,020
Filed by AUMA Riester GmbH & Co. KG, Müllheim (DE)
PCT Filed May 6, 2021, PCT No. PCT/EP2021/062053
§ 371(c)(1), (2) Date Nov. 8, 2022,
PCT Pub. No. WO2021/224415, PCT Pub. Date Nov. 11, 2021.
Claims priority of application No. 102020112548.8 (DE), filed on May 8, 2020.
Prior Publication US 2023/0184317 A1, Jun. 15, 2023
Int. Cl. F15B 1/04 (2006.01); F15B 1/027 (2006.01); F15B 15/00 (2006.01); F16H 25/18 (2006.01); F16H 37/12 (2006.01); F16H 57/00 (2012.01); F16K 31/04 (2006.01); F16K 31/05 (2006.01); F16K 37/00 (2006.01)
CPC F15B 1/04 (2013.01) [F15B 1/027 (2013.01); F15B 15/00 (2013.01); F16H 25/18 (2013.01); F16H 57/00 (2013.01); F16K 31/047 (2013.01); F16K 37/0008 (2013.01); F16H 37/122 (2013.01); F16H 57/0006 (2013.01); F16H 2057/0081 (2013.01); F16K 31/05 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A failsafe drive (1) for an actuating drive, the failsafe drive (1) comprising:
a cam disc (8),
a restoring element,
a counter-element (5), and
an output shaft (3),
the cam disc (8) and the counter-element (5) being configured for joint conversion of an axial movement of the restoring element along the output shaft (3) into a rotational movement of the output shaft (3),
the cam disc (8) has at least one control cam (10), a profile of which is adapted to a spring characteristic curve of the restoring element such that, upon each activation of the failsafe drive (1), at least one of a constant output movement or a constant output torque is adapted to be generated.