US 12,230,466 B2
Earthing switch
Keon Woo Kim, Seoul (KR); Ji Hoon Kim, Seoul (KR); and Seung Hwan Baik, Seoul (KR)
Assigned to Hyundai Electric & Energy Systems Co., Ltd., Seoul (KR)
Filed by Hyundai Electric & Energy Systems Co., Ltd., Seoul (KR)
Filed on Mar. 3, 2023, as Appl. No. 18/177,943.
Prior Publication US 2024/0296999 A1, Sep. 5, 2024
Int. Cl. H01H 9/12 (2006.01); H01H 25/00 (2006.01); H01H 33/56 (2006.01); H01H 33/70 (2006.01)
CPC H01H 9/12 (2013.01) [H01H 25/002 (2013.01); H01H 33/56 (2013.01); H01H 33/7038 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An earthing switch comprising:
a fixed contact part fixed in an enclosure;
a movable contact part disposed to face the fixed contact part, having a hollow portion formed therein, and having one end portion connected to a driving device and driven by the driving device so that an other end portion thereof is connected to or separated from the fixed contact part; and
a piston part located in the hollow portion and moving relative to the movable contact part,
wherein the hollow portion extends in a longitudinal direction of the movable contact part, both end portions of the hollow portion in the longitudinal direction are formed to be open, and the piston part includes a gas flow path formed therein.