US 11,742,157 B2
Contact bounce reduction system
Per Krainer, Ludvika (SE)
Assigned to HITACHI ENERGY SWITZERLAND AG, Baden (CH)
Appl. No. 18/10,712
Filed by Hitachi Energy Switzerland AG, Baden (CH)
PCT Filed May 28, 2021, PCT No. PCT/EP2021/064404
§ 371(c)(1), (2) Date Dec. 15, 2022,
PCT Pub. No. WO2021/254764, PCT Pub. Date Dec. 23, 2021.
Claims priority of application No. 20179976 (EP), filed on Jun. 15, 2020.
Prior Publication US 2023/0197364 A1, Jun. 22, 2023
Int. Cl. H01H 1/50 (2006.01); H01H 9/00 (2006.01); H01H 50/58 (2006.01); H01H 1/30 (2006.01)
CPC H01H 1/502 (2013.01) [H01H 1/30 (2013.01); H01H 1/50 (2013.01); H01H 9/0016 (2013.01); H01H 50/58 (2013.01); H01H 2201/002 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A contact bounce reduction system comprising:
a movable member, and
a contact bounce damping device comprising:
a body,
a first ball and a second ball arranged in the body,
a first resilient member and a second resilient member,
a piston partly arranged in and extending from the body, the piston being configured to be moved linearly between a default extended position and a retracted position relative to the body, and wherein the piston has a radial seat configured to partly receive the first ball and the second ball,
wherein the first resilient member is configured to act with a radial force onto the first ball to hold the first ball in the seat when the piston is in the default extended position,
wherein the second resilient member is configured to act with a radial force onto the second ball to hold the second ball in the seat when the piston is in the default extended position, and
a third resilient member configured to bias the piston towards the default extended position;
wherein the movable member is configured to move from a non-contact position relative to the piston to contact the piston and actuate the piston from the default extended position towards the retracted position with a force greater than a threshold value, causing the first ball and the second ball to move radially out from the seat, and the third resilient member to accumulate energy, and
the contact bounce reduction system further comprising a contact ring slidably arranged around the piston, and a fixed contact member electrically connected to the contact ring.