Telephone privacy device
First Claim
1. A telephone privacy protector for connection to common exchange line and one of at least two telephone line operated devices sharing said line, the privacy protector comprising:
- a voice connecting circuit for connection between a respective telephone line operated device and the line;
a silicon controlled rectifier connected to said circuit having an on and off state;
means for turning said rectifier on when said respective telephone line operated device goes off hook, provided no other telephone line operated device connected to the line is off hook, thereby permitting said voice connecting circuit to operate; and
means for providing a residual charge to said rectifier in order to reactivate same after said respective telephone line operated device is placed momentarily on hook and then returned to an off hook state while any other telephone line operated device connected to said line is off hook.
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Accused Products
Abstract
A telephone privacy protector for connection to a common exchange line and each one of at least two telephone operated devices sharing a line includes a voice connecting circuit for connection between a respective telephone line operated device and the line. There is a control deice connected to the circuit having an on and off state wherein the control device in the on state permits the voice connecting circuit to operate. There are means for turing the control device on when the respective telephone line operated device goes off hook provided that no other telephone line operated device sharing the line is off hook. There are means for providing a residual charge to the control device in order to reactivate same after the respective telephone line operated device is placed momentarily on hook and then returned to an off hook state while any other telephone line operated device connected to the line is off hook.
51 Citations
16 Claims
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1. A telephone privacy protector for connection to common exchange line and one of at least two telephone line operated devices sharing said line, the privacy protector comprising:
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a voice connecting circuit for connection between a respective telephone line operated device and the line; a silicon controlled rectifier connected to said circuit having an on and off state; means for turning said rectifier on when said respective telephone line operated device goes off hook, provided no other telephone line operated device connected to the line is off hook, thereby permitting said voice connecting circuit to operate; and means for providing a residual charge to said rectifier in order to reactivate same after said respective telephone line operated device is placed momentarily on hook and then returned to an off hook state while any other telephone line operated device connected to said line is off hook. - View Dependent Claims (2, 3, 4, 5)
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6. A telephone privacy protector for connection to a common exchange line and one of at least two telephone line operated devices sharing the line, the privacy protector comprising:
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a voice connecting circuit for connection between a respective telephone line operated device and the line; a control device connected to said circuit having an on and off state, said device in said on state permitting said voice connecting circuit to operate; means for turning said control device on when said one telephone line operated device goes off hook provided that no other telephone line operated device sharing the line is off hook; and means for providing a residual charge to said control device in order to reactivate same after said one telephone line operated device is placed momentarily on hook and then returned to an off hook state While any other telephone line operated device connected to said line is off hook. - View Dependent Claims (7, 8, 9, 10)
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11. A privacy protecting jack for connection to a common exchange line and one of at least two telephone line operated devices sharing the line, the jack comprising:
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a jack body having one end adapted for insertion in a connecting jack operatively connected to said exchange line and having a first jack receiving socket; a voice connecting circuit for connection between said one telephone line operated device and the line; a control device connected to said circuit having an on and off state, said device in said on state permitting said voice connecting circuit to operate, means for turning said control device on when said one telephone line operated device goes off hook provided that no other telephone line operated device sharing the line is off hook; means for providing a residual charge to said control device in order to reactivate same after said one telephone line operated device is placed momentarily on hook and then returned to an off hook state while any other telephone line operated device connected to said line is off hook, wherein said connecting circuit, control device, turning on means, and said residual charge providing means are mounted in said jack body. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification