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:
Mar. 14, 1989
Filed:
Mar. 17, 1988
Juichiro Takada, Shinmachi, Setagayaku, Tokyo, JP;
Other;
Abstract
A seat belt retractor having an emergency locking mechanism that includes a lock ring coupled by a pin and slot to a locking pawl comprises an automatic locking mechanism activated by rotation of the belt reel upon unwinding of a predetermined length of the belt from the reel for causing the locking pawl automatically to engage the ratchet wheel regardless of the rate of acceleration of the belt reel and thereby lock the reel against rotation in the unwinding direction and deactivated in response to rotation of the reel upon rewinding of a predetermined length of the belt onto the reel. The automatic locking mechanism includes an automatic actuator pawl mounted on the lock ring to pivot between an automatic locking position in engagement with the ratchet wheel and a non-locking position out of engagement with the ratchet wheel, an activating lever having an arm engageable with the actuator pawl, an over-center spring coupled to the activating lever and biassing it to a first position in which the arm moves the actuator pawl to the automatic locking position and also biassing it to a second position out of engagement with the actuator pawl, and a planetary gear train responsive to rotation of the belt reel for pivoting the activating lever between the first and second positions at predetermined points in the rotation of the reel.