Winding – tensioning – or guiding – Strand tensioning device – Tortuous course
Patent
1977-01-31
1978-06-27
Hornsby, Harvey C.
Winding, tensioning, or guiding
Strand tensioning device
Tortuous course
2421074R, A62B 3502, B65H 7548
Patent
active
040970035
ABSTRACT:
A safety belt retracting mechanism having constant pull includes a spindle supporting a rotatable spool for storing the belt within a housing. A conventional, positive coefficient of force spring inside the housing applies a retracting force to the spool and belt as the belt is pulled by the occupant. The spring is coupled between the housing and spool to a gear train having a negative coefficient of force transfer characteristic. The negative transfer characteristic of the gear train is caused by a changing gear ratio which compensates for the positive force characteristic of the spring to provide constant pull to the belt. The changing gear ratio is produced by a spiral-shaped gear coupled to a constant radius pinion formed on one end of the spindle. The spiral-shaped gear is formed on the hub of a containment member enclosing the spring. The containment member is mounted to the housing on a pivot arm. The arm is resiliently biased by a spring to maintain the spiral-shaped gear in enmeshment with the pinion during gear rotation.
REFERENCES:
patent: 4036449 (1977-07-01), Schreiber
Schotthoefer Jerome W.
Stouffer Richard C.
Allied Chemical Corporation
Criss Roger H.
Henry Patrick L.
Hornsby Harvey C.
Jillions John M.
LandOfFree
Constant pull safety belt retracting mechanism does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Constant pull safety belt retracting mechanism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Constant pull safety belt retracting mechanism will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2300595