Safety belt retractor

Details Safety belt retractor Safety belt retractor

B - Operations, Transporting

60

R

242/43.4

B60R 22/41 (2006.01) B60R 22/38 (2006.01)

Patent

CA 1050953

SAFETY BELT RETRACTOR Abstract of the Disclosure A safety belt retractor having a frame, a strap receiving reel mounted for rotation on the frame with the reel being urged into a strap wound position and a pawl having a tab for engaging the teeth of a ratchet wheel. Inertia responsive means are associated with the pawl which is normally biased into a position out of engagement with the wheel, the inertia respon- sive means being responsive to a first rate of acceleration of the strap off the reel for causing the pawl tab to engage with the teeth. The inertia responsive means is selectively prevented from causing the tab to engage with the teeth upon a second rate of acceleration of the strap off of the reel above the first rate of acceleration during protraction of the strap off of the reel while permitting operation of the inertia responsive means upon acceleration of the strap off of the reel at a third rate of acceleration higher than the second rate of acceleration and is responsive to a retractive movement of the reel after unwinding of a predetermined amount of the strap off of the reel to release the inertia responsive means for engagement of the tab with the ratchet wheel teeth upon acceleration of the strap off of said reel at the first rate of acceleration. - 1 -

248475

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