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:
Aug. 03, 1999
Filed:
Feb. 09, 1998
Jurgen Rink, Waldstetten, DE;
TRW Occupant Restraint Systems GmbH, Alfdorf, DE;
Abstract
A belt retractor for a vehicle seat belt comprises a belt reel rotatably mounted in a housing, a webbing reeled on the belt reel, a locking mechanism for blocking belt reel rotation, a planetary gearing including a sun gear connected non-rotatably to the belt reel, a ring gear secured to the housing, and at least one planet gear having an outer toothing, as well as a switch unit for determining the buckled-up condition on the basis of the length of the unwound webbing. The switch unit may be electrically coupled to a control unit for activating a gas generator and includes a switch lever actuatable by the movement of the planet gear. The switch lever is configured as a switch rocker pivotable between a first and a second position. The planet gear comprises at least one switch cam directly engaging the switch rocker and moving the switch rocker from the first position into the second position when a predetermined length of unwound webbing is reached.