Indicating apparatus专利检索-去振铃图形技术专利检索查询-专利查询网

Indicating apparatus

阅读：108发布：2021-09-11

专利汇可以提供Indicating apparatus专利检索，专利查询，专利分析的服务。并且Apparatus according to the present disclosure is capable of indicating that a telephone has rung. The apparatus includes sensor means responsive to the ringing of a telephone. Indicator means is provided indicating that the telephone has been rung, and lock-in means is connected to the sensor means for operating the indicator means when the sensor means responds to the ringing of the telephone. Manually operable reset means is provided for removing the indication by the indicator. Preferably, the sensor means is an electrical transducer and the lock-in means is a switch capable of being set by a signal from the transducer.，下面是Indicating apparatus专利的具体信息内容。

权利要求

1. Indicator apparatus comprising: a housing; sensor means carried by said housing for sensing receipt from a telephone set of a predetermined signal; indicator means carried by said housing and operable by said sensor means for indicating receipt of said predetermined signal; means connected to said sensor means for holding said indicating means in its indicating mode in response to operation of said sensor; and manually operable reset means carried by said housing and connected to said holding means, said reset means being operable to cease indication by said indicator means said sensor means comprising electrical transducer means responsive to the operation of the ringing circuit of a telephone to produce a signal, said indicator means comprising a lamp whose operation is capable of being initiated by a first potential and capable of being sustained by a second potential, said first potential being greater than said second potential, a capacitor, said hold means comprising a charging circuit for charging said capacitor to a potential at least as great as said second potential but not as great as said first potential, means connecting said capacitor to said lamp, and means responsive to the operation of said transducer means for biasing said capacitor to impose a potential on said lamp at least as great as said first potential, said lamp being connected in parallel with a series circuit comprising said capacitor and a resistor, said sensor means being connected to the junction between said resistor and capacitor, and connecting means for connecting said lamp to a source of potential.

2. Apparatus according to claim 1 wherein said sensor means comprises a Wheatstone bridge connected to said connector means, said resistor forming one leg of said Wheatstone bridge and said transducer means forming the center leg of said Wheatstone bridge.

3. Apparatus according to claim 2 wherein said transducer means includes a microphone responsive to the sound produced by the ringing circuit of the telephone.

4. Apparatus according to claim 3 wherein said reset means comprises a manually operable normally closed switch connected to said connecting means.

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Indicating apparatus

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