Stethoscopic headphone set

Details Stethoscopic headphone set Stethoscopic headphone set

1979-04-13

1981-07-07

Konick, Bernard

H04M 105

Patent

active

042776546

ABSTRACT:
A stethoscopic headphone set comprising two identical arms each provided with an earphone, Which arms terminate in a hinged connecting element including a wire spring. The connecting element essentially comprises two mirror-symmetrical identical coupling members which cooperate with each other via a gear transmission and which fully enclose the wire spring. The wire spring may comprise two helical springs which are mirror-symmetrical, each helical spring being incorporated in a coupling member.

REFERENCES:
patent: 1568721 (1926-01-01), Butcher et al.
patent: 1775204 (1930-09-01), Lucarelle
patent: 1813931 (1931-07-01), Johnson
patent: 2498960 (1959-02-01), Mullin
patent: 2780681 (1957-02-01), Shaper
patent: 2827514 (1958-03-01), Murray
patent: 3532837 (1970-10-01), Dyar et al.

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