Safety belt retractors

Details Safety belt retractors Safety belt retractors

Filed on

1979-07-03

Date issued

1981-03-17

Examiner

Jillions, John M.

Patent Class

Winding, tensioning, or guiding

SubClass

Strand tensioning device

SubSubClass

Tortuous course

Other Related Categories

242 685, 297472, A62B 3500, B65H 7548

Type

Patent

Status

active

Patent number

042562732

Description

ABSTRACT:
A safety belt retractor has a spindle 11 provided with an outer layer 14 formed of a material which is capable of absorbing energy by substantially inelastic deformation. When the safety belt 10 is subject to shock-loading exceeding a predetermined level, this outer layer 14 is crushed, leading to a reduction in the effective diameter of the spindle 11 and thereby allowing an additional length of the belt 10 to be paid out after the spindle 11 has been loaded.

REFERENCES:
patent: 2350269 (1944-06-01), Sampair et al.
patent: 2394639 (1946-02-01), Seem
patent: 3179245 (1965-04-01), Bastian
patent: 3454235 (1969-07-01), Hurley
patent: 3881667 (1975-05-01), Tandetzke
patent: 3961761 (1976-06-01), Wiesbock
patent: 4045079 (1977-08-01), Arlauskas et al.

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