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:
Nov. 04, 2025
Filed:
Jan. 25, 2021
Sekisui Chemical Co., Ltd., Osaka, JP;
Ayaka Kitagawa, Kyoto, JP;
Amiko Sakamoto, Kyoto, JP;
Hiroaki Kondou, Kyoto, JP;
Kouzou Makino, Kyoto, JP;
Tsuyoshi Katou, Kyoto, JP;
SEKISUI CHEMICAL CO., LTD., Osaka, JP;
Abstract
An electrofusion joint includes a tubular main body, a stopper portion, a first heat generation section, and a second heat generation section. The tubular main body includes a joint receiving portion. The stopper portion projects inwardly on an inner surface of the tubular main body. The first heat generation section includes a first heater wire wound and arranged at the joint receiving portion. The second heat generation section includes a second heater wire wound so that wound parts of the second heater wire are adjacent to each other and the second heater wire is in the stopper portion. The first heat generation section includes at least one heat generation portion in which the first heater wire is wound so that wound parts of the first heater wire are adjacent to each other.