Earmuff having sealing ring including liquid and foam plastic la

Details Earmuff having sealing ring including liquid and foam plastic la Earmuff having sealing ring including liquid and foam plastic la

1986-03-25

1987-06-23

Nerbun, Peter

Apparel

Head coverings

Convertible

381158, 181129, A42B 106

Patent

active

046741348

ABSTRACT:
An earmuff (10) has a sealing ring (20) with an outer liquid layer (38) and a foamed plastics layer (36) thereinunder. The liquid layer is arranged as a separate, annular, sheath-equipped liquid ring (38) the sheath (40) of which can move freely relative the sheath (30,32) of the sealing ring (20).

REFERENCES:
patent: 3051961 (1962-09-01), Clark
patent: 3908200 (1975-09-01), Lundin
patent: 4572323 (1986-02-01), Randall

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