Winding – tensioning – or guiding – Strand tensioning device – Tortuous course
Patent
1981-12-03
1984-06-26
Jillions, John M.
Winding, tensioning, or guiding
Strand tensioning device
Tortuous course
2421073, 2421074A, A62B 3502, B65H 7548
Patent
active
044561954
ABSTRACT:
An emergency locking retractor of the type that has a cam wheel and an inertia wheel having coacting cam elements that cause either the cam wheel or the inertia wheel to shift axially and thereby engage locking ratchet teeth to lock the wheel from rotation includes a brake member carried by the cam wheel and activated by the centrifugal reaction force due to rotation of the cam wheel at high velocity to move outwardly into engagement with a circumferential cylindrical wall portion of the casing for the locking device and thereby retard the velocity of rotation of the belt reel in the winding direction. By so limiting the rotational velocity of the cam wheel, the inertia wheel is kept from running ahead of the cam wheel in the winding direction, thereby preventing the camming action of the cam elements and any possibility of damaging, interfering contact between the locking ratchet teeth.
REFERENCES:
patent: 2587652 (1952-03-01), Rostine
patent: 3889897 (1975-06-01), Zelderen
patent: 3979083 (1976-09-01), Fohl
patent: 4278216 (1981-07-01), Takada
patent: 4392620 (1983-07-01), Takada
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