US 12,142,444 B2
Levitation fuse device
Daniel Sullivan, Santa Barbara, CA (US); Bernard Bush, Santa Barbara, CA (US); and Murray McTigue, Carpinteria, CA (US)
Assigned to Gigavac, LLC, Carpinteria, CA (US)
Filed by Gigavac, LLC, Carpinteria, CA (US)
Filed on Jul. 21, 2021, as Appl. No. 17/382,245.
Claims priority of provisional application 63/055,172, filed on Jul. 22, 2020.
Prior Publication US 2022/0028639 A1, Jan. 27, 2022
Int. Cl. H01H 39/00 (2006.01); H01H 3/02 (2006.01); H01H 9/10 (2006.01); H01H 71/32 (2006.01); H01H 77/06 (2006.01); H01H 85/165 (2006.01)
CPC H01H 39/006 (2013.01) [H01H 3/02 (2013.01); H01H 9/102 (2013.01); H01H 71/322 (2013.01); H01H 77/06 (2013.01); H01H 85/165 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An electrical switching device, comprising:
at least two fixed contacts;
a movable contact arranged to operate in a first position and a second position, the movable contact;
in electrical contact with the at least two fixed contacts in the first position, and
spaced from the at least two fixed contacts in the second position;
a levitation actuator mounted on the movable contact or one of the at least two fixed contacts to cause separation between the movable contact and at least one of the at least two fixed contacts when the movable contact is in the first position and a threshold current passes through the at least two fixed contacts and the movable contact;
a catch to hold the movable contact in the second position; and
a pyrotechnic device to, upon activation based on the separation, cause the movable contact to move from the first position to the second position.