The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 16, 2025
Filed:
Jun. 28, 2022
Applicant:
National Presto Industries, Inc., Eau Claire, WI (US);
Inventors:
Charles F. Caldwell, Eau Claire, WI (US);
Brian Ruben, Eau Claire, WI (US);
Assignee:
National Presto Industries, Inc., Eau Claire, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F24H 3/04 (2022.01); F24H 9/1863 (2022.01);
U.S. Cl.
CPC ...
F24H 3/0417 (2013.01); F24H 9/1863 (2013.01);
Abstract
Disclosed is a portable radiant heating device that has a base, a radiant heat source mounted in a tiltable reflector, and a safety interlock device located in the base. The safety interlock uses a pressure-sensitive foot that prevents the heater from producing infrared heat when not in contact with a mounting surface. The safety interlock device also prevents the heater from producing infrared heat when the reflector is not tilted so as to prevent excessive amounts of infrared heat from being directed towards the mounting surface.