초록 ▼

A radio receiver and its power supply are included in a circuit with a switch which is responsive to introduction of a force field, such as a magnetic field. When the field is activated, as by the introduction of a sufficiently powerful magnet, the switch is opened and the radio receiver is deactiva

A radio receiver and its power supply are included in a circuit with a switch which is responsive to introduction of a force field, such as a magnetic field. When the field is activated, as by the introduction of a sufficiently powerful magnet, the switch is opened and the radio receiver is deactivated. Removal of the force field automatically restores the radio receiver to operable condition.

대표청구항 ▼

Unobtrusive disabling means for a remotely activated dangerous prisoner control device of the type having radio signal receiving apparatus responsive to radio signal activation for stunning a dangerous prisoner wearing said device, comprising: a switch having a first position, normally closed for op

Unobtrusive disabling means for a remotely activated dangerous prisoner control device of the type having radio signal receiving apparatus responsive to radio signal activation for stunning a dangerous prisoner wearing said device, comprising: a switch having a first position, normally closed for operation of said radio signal receiving means, and a second positions, which is open for disabling said operation of said radio signal receiving means, for control of a circuit, said circuit including said radio signal receiving means, and said switch including means responsive to a magnetic force field for changing said switch from said first position to said second position for disabling said radio signal receiving means.