US 12,451,772 B2
Composite oil seal having electric corrosion prevention function and method of manufacturing ground path thereof
Taehyung Kim, Daegu (KR); Eunmin Park, Daegu (KR); and Jaehyuk Sung, Daegu (KR)
Assigned to PYUNGHWA OIL SEAL INDUSTRY CO., LTD., Daegu (KR)
Filed by PYUNGHWA OIL SEAL INDUSTRY CO., LTD., Daegu (KR)
Filed on Feb. 15, 2023, as Appl. No. 18/110,147.
Claims priority of application No. 10-2022-0065018 (KR), filed on May 26, 2022; application No. 10-2022-0149040 (KR), filed on Nov. 9, 2022; and application No. 10-2022-0190765 (KR), filed on Dec. 30, 2022.
Prior Publication US 2023/0412053 A1, Dec. 21, 2023
Int. Cl. H02K 11/40 (2016.01); D03D 15/275 (2021.01); D04H 3/011 (2012.01); H02K 5/10 (2006.01); H02K 5/22 (2006.01)
CPC H02K 11/40 (2016.01) [D03D 15/275 (2021.01); D04H 3/011 (2013.01); H02K 5/10 (2013.01); H02K 5/225 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A composite oil seal having an electric corrosion prevention function, the composite oil seal comprising:
a seal main body configured to seal an interior of a motor housing in a state of being mounted to a shaft in the motor housing;
a ground path mounted to the seal main body, the ground path being configured to electrically connect the shaft to the motor housing to allow current induced in the shaft to flow to the motor housing; and
a support member configured to detachably fix the ground path to the seal main body,
wherein the seal main body has a mounting groove formed therein, and
wherein the support member comprises:
a support detachably mounted in the mounting groove;
an arm fixed to the support; and
a support case located at an end of the arm to accommodate and support the ground path.