US 12,084,626 B2
Spring part for a driving device and method of manufacturing a spring part
Peter Mrowka, Remscheid (DE); Christian Bartschies, Remscheid (DE); Gerhard Bauer, Remscheid (DE); and Jochen Bals, Remscheid (DE)
Assigned to EDSCHA ENGINEERING GMBH, Remscheid (DE)
Filed by Edscha Engineering GmbH, Remscheid (DE)
Filed on Sep. 27, 2022, as Appl. No. 17/953,747.
Claims priority of application No. 102021125588.0 (DE), filed on Oct. 1, 2021.
Prior Publication US 2023/0108973 A1, Apr. 6, 2023
Int. Cl. C10M 107/50 (2006.01); C09J 175/04 (2006.01); C10M 107/00 (2006.01); E05F 1/10 (2006.01); F16F 1/02 (2006.01)
CPC C10M 107/50 (2013.01) [C09J 175/04 (2013.01); C10M 7/00 (2013.01); E05F 1/1041 (2013.01); F16F 1/024 (2013.01); E05Y 2900/531 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A spring part for a driving device comprising:
a spring body extending around a central axis, the spring body comprising several spring windings which run radially around a spring axis and are made of at least a base material,
the base material being a chromium-silicon-vanadium-alloyed spring steel wire,
the base material being surrounded at least by a first protective layer,
the first protective layer being a zinc flake coating applied to the base material in a spraying method or a spray-coating method,
the spring body being at least partially covered on the outside by a lubricant,
the lubricant being a silicone-based lubricant.