公开(公告)号：US11477858B2

公开(公告)日：2022-10-18

申请号：US16653094

申请日：2019-10-15

Applicant: NHK SPRING CO., LTD.

Inventor： Toshihiko Hanamachi ,  Kenji Sekiya ,  Daisuke Hashimoto ,  Satoshi Hirano ,  Masaru Takimoto ,  Go Takahara ,  Yoshihito Araki ,  Arata Tatsumi ,  Takashi Kawasaki ,  Yuki Toyama ,  Satoshi Anzai

IPC: H05B3/10 ,  H05B3/18 ,  H05B3/48 ,  H05B3/74 ,  H05B3/03

Abstract: A small diameter sheath heater with improved reliability is provided. The sheath heater according to one embodiment of the present invention includes a metal sheath, a heating wire having a band shape, the heating wire arranged with a gap within the metal sheath so as to rotate with respect to an axis direction of the metal sheath, an insulating material arranged in the gap, and connection terminals arranged at one end of the metal sheath, the connection terminals electrically connected with both ends of the heating wire respectively.