Telecommunications – Receiver or analog modulated signal frequency converter – Cabinet – housing – or chassis structure
Patent
1987-10-15
1990-06-12
Safourek, Benedict V.
Telecommunications
Receiver or analog modulated signal frequency converter
Cabinet, housing, or chassis structure
455348, 455 57, 381 77, H04B 108, H04B 700
Patent
active
049339885
ABSTRACT:
Disclosed is equipment for wireless transmitting and receiving audio signals in a confined area which comprises a transmitter receiver and battery pack. The receiver including a bracket with which the receiver may be detachably secured to a surface such as a table or chair arm and whereby access to the fasteners with which the bracket means is secured to the surface is restricted. The receiver and battery pack have complementary dovetail means by which the battery pack and the receiver may be operatively secured together in electrical communication, the battery pack being detachable by the use of the receiver. Preferably, the bracket and receiver have a latchable dovetail connection means whereby the receiver can be hooked to the bracket and removed only by authorized people using an appropriate key. The transmitter is connected to a TV or video presentation machine such that it transmits the audio portion of the presentation over a selected FM frequency to the receiver or receiver in a bar, lounge or classroom. The receivers can be tuned into the selected frequency and head with appropriate earphones associated with the receiver. The receiver is only turned on when the battery pack and earphones are operatively connected with the receiver.
REFERENCES:
patent: 2979607 (1961-04-01), Herzfeld
patent: 3035168 (1962-05-01), Housman
patent: 3179891 (1965-04-01), Sharma
patent: 3315375 (1967-04-01), Heinz
patent: 3462688 (1969-08-01), Abel
patent: 3637940 (1972-01-01), Morchand et al.
patent: 3796984 (1974-03-01), Selinko
patent: 3824472 (1974-07-01), Engel et al.
patent: 4027248 (1977-05-01), Muzyka
patent: 4352200 (1982-09-01), Oxman
patent: 4685133 (1987-08-01), Iggulden
"Mura Hi Stepper" publication.
Safourek Benedict V.
Smith Ralph
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