Winding – tensioning – or guiding – Strand tensioning device – Tortuous course
Patent
1974-12-16
1976-03-02
Christian, Leonard D.
Winding, tensioning, or guiding
Strand tensioning device
Tortuous course
B65H 7548
Patent
active
039413306
ABSTRACT:
A safety belt retractor is provided having a frame, a shaft extending transversely of the frame and journalled for rotation thereon, a reel fixed to the shaft and having one end of a strap secured to the shaft and wound about the reel, the other end of the strap extending outwardly of the frame and means for rewinding the strap onto the reel. At least one ratchet tooth gear is mounted on the shaft and rotatable therewith and a lockbar is also mounted on the frame and has at least one locking pawl adapted to engage the teeth of the gear, the lockbar being movable between positions engaging the teeth and out of engagement therewith. Means are provided for moving the lockbar into engagement with the teeth of the ratchet tooth gear and releasing the lockbar from engagement with the teeth of the ratchet tooth gear upon rewinding of the strap back onto the reel. Means are also provided for preventing the reel from rotation in either direction when the lockbar is in locking engagement with the gear and a load is placed on the strap above a predetermined amount. Although the strap cannot now be unwound from or rewound onto the reel, the retractor continues to take the load for which it was designed before complete failure thereof.
REFERENCES:
patent: 3482799 (1969-12-01), Wrighton et al.
patent: 3604655 (1971-09-01), Jones
patent: 3865329 (1975-02-01), Higbee et al.
American Safety Equipment Corporation
Christian Leonard D.
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