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:
Oct. 06, 2020
Filed:
Aug. 01, 2019
Daido Kogyo Co., Ltd., Ishikawa, JP;
Nhk Spring Co., Ltd., Kanagawa, JP;
Hideaki Seki, Ishikawa, JP;
Yoshio Yamada, Kanagawa, JP;
Takao Kobayashi, Kanagawa, JP;
Kazuhito Hiraoka, Kanagawa, JP;
Shuji Takahashi, Kanagawa, JP;
DAIDO KOGYO CO., LTD., Ishikawa, JP;
NHK SPRING CO., LTD., Kanagawa, JP;
Abstract
A tensioner includes a power spring, and a backup member being in contact with the power spring and supporting the power spring by acting an urging force in a direction opposite to a radial shift of the power spring in a direction in which the power spring is wound. The power spring is unwound in a condition in which an inter-plate frictional force of the power spring is small in a case where an urging force acting from a power spring to a tension member is greater than a load acting from the tensioner arm to the power spring and the power spring is wound in a condition in which the inter-plate frictional force of the power spring is large in a case where the urging force acting from the power spring to the tension member is smaller than the load acting from the tension member to the power spring.