US 11,792,896 B2
Electromagnetic wave reducing heater
Raleigh C. Duncan, Berkeley, CA (US); and Andrew Kaps, San Francisco, CA (US)
Assigned to SAUNA WORKS INC., Berkeley, CA (US)
Filed by Sauna Works Inc., Berkeley, CA (US)
Filed on Nov. 23, 2020, as Appl. No. 17/101,909.
Application 17/101,909 is a continuation of application No. 15/806,262, filed on Nov. 7, 2017, granted, now 10,869,367.
Application 15/806,262 is a continuation of application No. 13/427,899, filed on Mar. 23, 2012, granted, now 9,844,100, issued on Dec. 12, 2017.
Claims priority of provisional application 61/467,884, filed on Mar. 25, 2011.
Prior Publication US 2021/0076461 A1, Mar. 11, 2021
Int. Cl. H05B 6/44 (2006.01); H05B 1/02 (2006.01)
CPC H05B 6/44 (2013.01) 20 Claims
OG exemplary drawing
 
1. A sauna, comprising:
a sitting area;
a first conductive heating element configured to generate heat directed to the sitting area using a first alternating current, wherein the first conductive heating element is a first planar heating element;
a second conductive heating element configured to generate heat using a second alternating current, wherein the second conductive heating element is a second planar heating element, wherein the first alternating current delivered to the first conductive heating element is opposite in phase to the second alternating current delivered to the second conductive heating element so that the electromagnetic emissions from the first conductive heating element are cancelled out by the electromagnetic emissions from the second conductive heating element;
an insulation layer between the first conductive heating element and the second conductive heating element;
a controller configured to change the amount of first alternating current and the second alternating current provided to the first conductive heating element and the second conductive heating element respectively.