US 12,431,772 B2
Shaft earthing ring with a metal support having a ventilation opening
Bjoern Lindener, Luebeck (DE); Juergen Grundt, Neumuenster (DE); Manfred Brand, Tremsbuettel (DE); Samuel Neumann, Ahrensburg (DE); Matthias Spitz-Valentiner, Hamburg (DE); and Tobias Saberniak, Luebeck (DE)
Assigned to BRUSS SEALING SYSTEMS GMBH, Hoisdorf (DE)
Filed by BRUSS SEALING SYSTEMS GMBH, Hoisdorf (DE)
Filed on Mar. 24, 2022, as Appl. No. 17/703,323.
Claims priority of application No. 102021202863.2 (DE), filed on Mar. 24, 2021; and application No. 102022104417.3 (DE), filed on Feb. 24, 2022.
Prior Publication US 2022/0311315 A1, Sep. 29, 2022
Int. Cl. H02K 11/40 (2016.01); H01R 39/12 (2006.01); H02K 7/00 (2006.01)
CPC H02K 11/40 (2016.01) [H01R 39/12 (2013.01); H02K 7/003 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A shaft earthing ring for establishing an electrical potential connection between a rotating shaft and a housing of an electric motor, comprising:
an electrically conductive earthing element which has a contact portion that is configured to contact a rotating shaft of an electric motor, and
a metal support body configured to be fixed to a housing of the electric motor, wherein when the contact portion contacts the rotating shaft and the metal support body is fixed to the housing, an electrical potential connection is established between the rotating shaft and the housing,
wherein the metal support body has at least one ventilation opening which allows ventilation of a housing interior of the electric motor while bypassing the electrically conductive earthing element.