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:
Apr. 21, 2020
Filed:
Nov. 28, 2017
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
Doowon Climate Control Co., Ltd., Asan-si, Chungcheongnam-do, KR;
Man Ju Oh, Yongin-si, KR;
Sang Shin Lee, Suwon-si, KR;
So La Chung, Seoul, KR;
Jae Woong Kim, Hwaseong-si, KR;
So Yoon Park, Suwon-si, KR;
Jae Woo Park, Ansan-si, KR;
Du Youl Choi, Asan-si, KR;
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
Doowon Climate Control Co., Ltd., Anan-si, Chungcheongnam-do, KR;
Abstract
A cooling water heating apparatus includes: a housing having an inlet through which cooling water flows in at a first side and an outlet through which cooling water flows out at a second side; a sheath heater housed in the housing and electrically connected to an outside through an electric circuit to heat the cooling water in the housing; and an overheat preventing device housed in the housing to be submerged under the cooling water in an upper side of the housing in a gravity direction, the overheat preventing device having a positive temperature coefficient (PTC) device connected in series to the electric circuit of the sheath heater to allow the PTC device to control energization of the sheath heater.