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. 23, 2019
Filed:
Mar. 10, 2017
Joyson Safety Systems Japan K.k., Tokyo, JP;
JOYSON SAFETY SYSTEMS JAPAN K.K., Tokyo, JP;
Abstract
Provided are a pretensioner, a retractor, and a seat belt device that can achieve weight reduction of a device by improving slidability of a power transmission member used for the pretensioner. A pretensioner includes a drive wheel for rotating the spool, and a power transmission unit for transmitting power to the drive wheel in an emergency. The power transmission unit includes a power transmission member for rotating the drive wheel, a pipe that contains the power transmission member, a gas generator for supplying a working gas into the pipe, and a housing that defines a passage for the power transmission member on an outer periphery of the drive wheel. The housing has a sliding member that is disposed at an outlet part of the pipe and that reduces frictional force between the housing and the power transmission member.