US 12,479,043 B2
Arc ignition system for exothermic welding apparatus
Jayaraj Ramasamy, Chennai (IN); and K Sundharavadivel, Chennai (IN)
Assigned to Hubbell Incorporated, Shelton, CT (US)
Appl. No. 18/274,686
Filed by Hubbell Incorporated, Shelton, CT (US)
PCT Filed Jan. 24, 2022, PCT No. PCT/US2022/013492
§ 371(c)(1), (2) Date Jul. 27, 2023,
PCT Pub. No. WO2022/169624, PCT Pub. Date Aug. 11, 2022.
Claims priority of provisional application 63/144,686, filed on Feb. 2, 2021.
Prior Publication US 2024/0091877 A1, Mar. 21, 2024
Int. Cl. B23K 23/00 (2006.01); F23Q 3/00 (2006.01)
CPC B23K 23/00 (2013.01) [F23Q 3/006 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An igniter apparatus comprising:
a powder container, the container adapted to hold an ignition powder;
an ignition chamber positioned below the powder container and comprising an interior wall;
a gate connecting the powder container and the ignition chamber, the gate adapted to open to allow powder to fall from the powder container into the ignition chamber; and
a pair of electrodes mounted to the interior wall of the ignition chamber, wherein, when a voltage is applied to the electrodes an electrical arc is generated within the ignition chamber and wherein the arc ignites the powder.