公开(公告)号：US10520029B2

公开(公告)日：2019-12-31

申请号：US15953070

申请日：2018-04-13

Applicant: SEIKO INSTRUMENTS INC.

Inventor： Akihiro Iino ,  Yukihiro Nakayama ,  Hironobu Itoh ,  Tatsumi Yamada ,  Noritoshi Yuura ,  Haruhiko Hasegawa

IPC: F16C33/62 ,  F16C19/06 ,  F16C19/52 ,  F16C13/00 ,  B29C33/40 ,  B29C45/14

Abstract: A structure includes an enveloping layer formed on one of a circular outer surface or a flat outer surface having irregularities, wherein the enveloping layer includes an outer circumferential surface layer formed by thermally fusing a thermoplastic elastomer. The enveloping layer has a first material layer provided on one of the outer surfaces and formed from an amorphos plastic, and a second material layer provided on the first material layer and formed from a thermoplastic elastomer selected from the group consisting of styrenes, olefins, polyvinyl chlorides, urethanes and polyesters.