US 11,937,342 B2
Spot heater
Katherine M. Palmer, Galloway, OH (US); Kurt Bosworth, Woodstock, OH (US); Kevin Yugulis, Columbus, OH (US); Amy M. Heintz, Dublin, OH (US); and Jeffrey L. Ellis, Columbus, OH (US)
Assigned to Battelle Memorial Institute, Columbus, OH (US)
Filed by Battelle Memorial Institute, Columbus, OH (US)
Filed on Sep. 23, 2020, as Appl. No. 17/030,329.
Claims priority of provisional application 62/904,622, filed on Sep. 23, 2019.
Prior Publication US 2021/0112627 A1, Apr. 15, 2021
Int. Cl. H05B 3/10 (2006.01); H05B 3/00 (2006.01); H05B 3/03 (2006.01); H05B 3/16 (2006.01); H05B 3/20 (2006.01); H05B 3/22 (2006.01); H05B 3/34 (2006.01)
CPC H05B 3/0004 (2013.01) [H05B 3/03 (2013.01); H05B 3/10 (2013.01); H05B 3/34 (2013.01); H05B 2203/007 (2013.01); H05B 2203/013 (2013.01); H05B 2203/016 (2013.01); H05B 2203/037 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A spot heater, comprising:
a sheet of resistive heating material that comprises an area or areas of reduced cross-sectional area which are adapted to constrict current flow through the sheet of resistive heating material;
and an actuator for providing electrical current through the sheet; and
wherein the area or areas of reduced cross-sectional areas are formed by opposing notches in the resistive heating material wherein each of the opposing notches has a feature angle of between 5 and 60 degrees.