Patent
1977-03-28
1978-07-04
Cooper, William C.
179103, 179178, H04M 104
Patent
active
040990346
ABSTRACT:
The invention relates to a fastening arrangement in a telephone instrument of the one-piece type for both the earphone capsule and the cap which cap should be fastened to the casing in order to cover the opening of the head part. The arrangement has two elements. The first element is a body which is secured to the inside of the casing in the top of the head part, and two oppositely directed tongue-formed parts. The first part, directed upwards, engages an upper collar-formed socket on the inside of the instrument cap and the second tongue-formed part contacts the upper front surface of the earphone capsule. The second element is a body with a rear projection engaging an aperture of a printed circuit card mounted inside the throat of the casing and two oppositely directed tongue-formed parts. The first of these parts contacts the lower front surface of the earphone capsule and the second engages a lower collar-formed socket on the inside of the instrument cap. The second element is also provided with two resilient taps directed downwards to engage the inside of the instrument casing.
REFERENCES:
patent: 3476886 (1969-11-01), Ferrari et al.
Cooper William C.
Myers Randall P.
Telefonaktiebolaget L M Ericsson
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