Power safety device for CATV tap-off unit

Details Power safety device for CATV tap-off unit Power safety device for CATV tap-off unit

1984-11-29

1986-03-18

George, Keith E.

Facsimile and static presentation processing

Static presentation processing

Attribute control

455 3, H04N 710

Patent

active

045772215

ABSTRACT:
In a cable television system in which one or more tap-off devices deliver television signals to an associated subscriber via drop cables connecting the tap-off devices at the subscribers' premises, and in which the tap-off devices receive electrical power from the subscribers via the drop cables, a power safety apparatus and method interrupts the application of power to the drop cable when the drop cable becomes cut, broken or disconnected to prevent individuals from receiving hazardous electrical shocks.

REFERENCES:
patent: 3909560 (1975-09-01), Martin et al.
patent: 4135157 (1979-01-01), den Toonder
patent: 4161751 (1979-07-01), Ost
patent: 4205269 (1980-05-01), Watanabe
patent: 4475123 (1984-10-01), Dumbauld
"The Tier Guard System", by e-com Corporation, Quakertown, Pa., brochure #470-0004.
"Just in Time for the Future", by Pico Products, Inc., Liverpool, N.Y., brochure.
"Out-of-Home Addressable Security is Now a Reality" by Vitek Electronics, Inc., Edison, N.J.; drawing dated 2-28-83.
"Scat Series 10 Converter Off-Premises Addressable Control: Second Generation", by Joseph P. Preschutti; C-COR Electronics, Inc., 5/83.

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