Fastening means for fitting an accessory, especially an ear muff

Details Fastening means for fitting an accessory, especially an ear muff Fastening means for fitting an accessory, especially an ear muff

1980-05-20

1981-09-08

Nerbun, Peter P.

Apparel

Guard or protector

For wearer's head

2209, 179156R, A42B 300, A42B 124

Patent

active

042876141

ABSTRACT:
A fastening means for fitting an ear muff to a safety helmet has an arm which is mounted in a housing intended for attaching to the helmet. A pivoting end portion of the arm situated in the housing is acted on by a disc-type spring means arranged in the housing. The line of action of the spring force has a decreasing leverage to the pivoting location of the arm for increasing arm swing-out, the pivoting moment exercised by the spring means on the arm being substantially constant within a swing-out range normal for the arm when it is in use. This results in a contact force for the ear muff which is essentially independent of the amount of swing-out.

REFERENCES:
patent: 4027341 (1977-06-01), Patteri

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