Winding – tensioning – or guiding – Strand tensioning device – Tortuous course
Patent
1976-06-16
1978-01-03
Gilreath, Stanley N.
Winding, tensioning, or guiding
Strand tensioning device
Tortuous course
A62B 3502, B65H 7548
Patent
active
040662225
ABSTRACT:
A device for locking reeling means of safety belts for vehicles is described including a rotatable core element for a safety belt which element is spring biased in the wind-up direction and at one of its ends supports at least one locking body rotatable with the core element, said locking body being designed to assume a locked position upon sudden rapid unwinding of the safety belt by engaging a stationary track situated in a frame to be affixed to a vehicle, a longitudinal groove of trapezoidal cross-sectional area tapering radially and inwardly to form a bottom portion said groove being axially disposed at one end of said rotatable core element, a locking body of from rectangular to square cross-sectional area disposed within said groove and having a bottom portion of a width which substantially corresponds to the width of the bottom portion of said groove, a circumferential groove in the outer portion of said locking body and spring means received by said circumferential groove and retained by said core element resiliently urging said locking body in an inoperative position toward the base of the groove in said core element, and an inertial disk carried on the outer end of said core element adjacent to said locking body and carrying a projection adapted to engage and displace said locking body from said groove, said disk being normally rotatable with said core element but adapted to rotate at a different speed therefrom upon sudden changes in the rotational speed of the core element, thereby permitting the projection on the inertial disk to engage the locking member and displace the same so that said member in turn engages the stationary track and acts as a brake to prevent further rotation of the core element.
REFERENCES:
patent: 2953315 (1960-09-01), Lautier et al.
patent: 2982492 (1961-05-01), Spielman
patent: 3341250 (1967-09-01), Rasmussen
patent: 3552676 (1971-01-01), Weber
patent: 3823893 (1974-07-01), Svensson
patent: 3905562 (1975-09-01), Kell
patent: 3907227 (1975-09-01), Takada
Eksell Lennart
Hjelte Sven Roland
Gilreath Stanley N.
Jillions John M.
Svensk Tryckgjuntning SH AB
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