Telephonic communications – Terminal – Having loudspeaking conversation capability
Patent
1987-01-23
1988-12-06
Ng, Jin F.
Telephonic communications
Terminal
Having loudspeaking conversation capability
379435, 379436, H04M 102
Patent
active
047900075
ABSTRACT:
A telephone instrument is designed in the shape of an angle, whereby the upper side has a steeper inclination towards the user. The rear wall is at approximately a right angle to the upper side. The bottom side runs at a specific distance, parallel to the upper side and to the rear wall. Since the distance between the upper side and the bottom side is not very great, i.e. since a maximum of only two printed circuit boards can be accommodated one on top of the other in this space, the bottom side below the upper side has a trough which serves both to accommodate an additional printed circuit board and to provide cable entries. This trough does not extend over the total width of the telephone instrument but is narrower. In order to expand the keyboard, one part of the upper side can be moved in the longitudinal direction, away from the user, so that an additional keyboard or indicator device below it is made available.
REFERENCES:
patent: D272441 (1984-01-01), Carr
patent: D288319 (1987-02-01), Suzuki
patent: D294351 (1988-02-01), Richter et al.
patent: 4153822 (1979-05-01), Ueda et al.
patent: 4277652 (1981-07-01), Branden et al.
patent: 4375584 (1983-03-01), Muzumdar
patent: 4381500 (1983-04-01), Urata et al.
patent: 4598175 (1986-07-01), Read
"Ultradial 120", Tele-Product News, May/Jun. 1985, p. 51.
German Publication; Unterrichtsblatter der Deutschen Bundes Post 36, (1983) Nr. 11, p. 443.
Girscher Wolfgang
Kramer Dieter
Mayer Helmut R.
Munch Volker
Niederhofer Karl H.
Ng Jin F.
Telenorma Telefonbau und Normalzeit GmbH
Vaas Randall S.
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