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:
Jul. 29, 2025
Filed:
Apr. 20, 2021
Applicant:
Bestway Inflatables & Material Corp., Shanghai, CN;
Inventor:
Feng Liu, Shanghai, CN;
Assignee:
BESTWAY INFLATABLES & MATERIALS CORP., Shanghai, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F24H 1/10 (2022.01); F24H 1/12 (2022.01); F24H 9/00 (2022.01); F24H 9/14 (2006.01); F24H 9/1818 (2022.01); H05B 3/04 (2006.01); H05B 3/06 (2006.01); H05B 3/44 (2006.01);
U.S. Cl.
CPC ...
F24H 1/102 (2013.01); F24H 1/121 (2013.01); F24H 9/0015 (2013.01); F24H 9/146 (2013.01); F24H 9/1827 (2013.01); H05B 3/04 (2013.01); H05B 3/06 (2013.01); H05B 3/44 (2013.01); H05B 2203/016 (2013.01); H05B 2203/02 (2013.01); H05B 2203/021 (2013.01);
Abstract
A heating apparatus is disclosed. The heating apparatus comprises a PTC heating element, a first electrode, a second electrode, a first protection layer, a second protection layer, a first interlayer, and a second interlayer. A hardness of the first protection layer is greater than that of the first interlayer. A hardness of the second protection layer is greater than that of the second interlayer.