Security device for cable television
OwnerRobert H. Schaerinventor
Life of this patent
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Abstract
An electrical circuit that interrupts normal operation of a cable television channel selection box responsive to unauthorized entry into the box. A closure means is mounted about its periphery by a plurality of screw members that must be removed in a predetermined sequence to avoid disabling the box. A power source provides current through a bypass means in the form of a normally closed switch means as long as the closure means remains closed, but removal of a fastening means not associated with said bypass means prior to interruption of said current results in de-activation of the channel selection box.
Claims4
A cable television channel selection box anti-tamper device, comprising, in combination,
- a channel selection box,
- said channel selection box having reception means contained therein to allow reception by a cable television subscriber of a plurality of electromagnetic signals,
- said reception means further having pre-set channel restricting means to prevent reception of predetermined signals from among said plurality of signals,
- said channel selection box having a closure means to bar access by a subscriber to said reception and restricting means,
- a plurality of at least two removable fastening means to detachably secure said closure means to said selection box so that authorized personnel may gain access to said reception and restricting means,
- a selection box disabling means,
- a disabling means bypass means,
- said disabling means and said bypass means operatively connected to said fastening means such that removal of the fastening means operatively connected to the bypass means must be accomplished prior to the removal of the fastening means operatively connected to the disabling means to avoid disabling said reception and restricting means.
Dependencies are inferred from the claim text.