Telecommunications – Receiver or analog modulated signal frequency converter – Cabinet – housing – or chassis structure
Patent
1991-09-20
1994-08-16
Eisenzopf, Reinhard J.
Telecommunications
Receiver or analog modulated signal frequency converter
Cabinet, housing, or chassis structure
455 90, 439 4, 242385, H04B 108
Patent
active
053394615
ABSTRACT:
A compact, radio frequency receiver apparatus having left and right channel conductors windably disposed within a housing of the apparatus. The left and right channel electrical conductors each further have earphone transducers electrically coupled thereto. The earphone transducers may be manually, removably stored in a plurality of recesses formed in an external surface of the housing. The conductors are windably disposed on a spool within the housing of the apparatus, with the spool being rotatable freely therewithin. A spring operatively associated with the spool exerts a constant biasing force in a rewind direction to tend to constantly urge the spool in the rewind direction. A latching member, manually movable by a user via a pushbutton release member, holds the spool stationary after the conductors have been unwound from the spool an approximate, desired length. The conductors are operatively associated with an FM stereo receiver/amplifier housed on a printed circuit board within the housing of the apparatus. Controls for allowing a user to manually adjust the volume and frequency of the signal received by the FM stereo receiver and amplifier are also provided. In an alternative preferred embodiment the apparatus includes an electrical coupling jack and associated conductor for coupling the apparatus to an independent, external FM stereo receiver unit. The coupling jack may also be removably stored within a recess in the external surface of the housing.
REFERENCES:
patent: 3798389 (1974-03-01), Tokizaki
patent: 3984645 (1976-10-01), Kresch
patent: 4485278 (1984-11-01), Schaller
patent: 4682363 (1987-07-01), Goldfarb et al.
patent: 4691383 (1987-09-01), DeMars
patent: 4942617 (1990-07-01), Boylan
patent: 5074863 (1991-12-01), Dines
patent: 5178619 (1993-01-01), Galazaka
Eisenzopf Reinhard J.
Sobutka Philip J.
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