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:
Feb. 26, 1991
Filed:
Jul. 05, 1989
Tatsuo Tada, Kanagawa, JP;
Nippon Seiko Kabushiki Kaisha, Tokyo, JP;
Abstract
A retractor is provided with a detector for the amount of a webbing wound on a retractor shaft. The detector is of the type that the amount of the webbing wound on the retractor shaft is determined on the basis of the number of revolutions which the retractor shaft has undergone. The retractor includes first and second internal gears, at least one planetary gear and a switch actuator. The first and second internal gears have different numbers of teeth, and are arranged side by side in the direction of an axis of the retractor shaft. The first internal gear is fixed on the base while the second internal gear is rotatably supported on the base. The planetary gear is provided on the retractor shaft and is maintained in meshing engagement with both the first and second internal gears. A switch actuator is formed on the second internal gear and a switch is provided on the base.