Emergency information communicating device
First Claim
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1. An emergency information communicating device which comprises:
- a waterproof case body enclosing a high-frequency transmission circuit, a battery for supplying a DC power source to the transmission circuit, and switch means operable by a magnetic field, said switch means being connected between the battery and the transmission circuit;
a slot defined in the case body close to the switch means, said slot and switch means being separated by a partition wall member;
a permanent magnet for inserting into a predetermined position of said slot to apply a magnetic field for operating the switch means; and
an elongated electric conducting member, one end of which is connected with an end portion of said permanent magnet and the other end connected with an output terminal of said transmission circuit, said switch means being turned off when said permanent magnet is inserted in the predetermined position in said slot and being turned on when the permanent magnet is displaced from the predetermined position, thereby starting the transmission circuit to radiate an electromagnetic wave from said electric conducting member.
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Abstract
Emergency information communicating device is disclosed having a wireless transmission circuit, a switch means and a battery which are provided in a waterproof case body, a permanent magnet inserted in a slot defined in the case body for providing a magnetic field to actuate the switch means and an electrical conducting member acting as an antenna. By disengaging the permanent magnet from the case body, emergency information can be radiated from the antenna.
14 Citations
7 Claims
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1. An emergency information communicating device which comprises:
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a waterproof case body enclosing a high-frequency transmission circuit, a battery for supplying a DC power source to the transmission circuit, and switch means operable by a magnetic field, said switch means being connected between the battery and the transmission circuit; a slot defined in the case body close to the switch means, said slot and switch means being separated by a partition wall member; a permanent magnet for inserting into a predetermined position of said slot to apply a magnetic field for operating the switch means; and an elongated electric conducting member, one end of which is connected with an end portion of said permanent magnet and the other end connected with an output terminal of said transmission circuit, said switch means being turned off when said permanent magnet is inserted in the predetermined position in said slot and being turned on when the permanent magnet is displaced from the predetermined position, thereby starting the transmission circuit to radiate an electromagnetic wave from said electric conducting member. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An emergency information communicating device which comprises:
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a waterproof case body enclosing a high-frequency transmission circuit, a battery for supplying a DC power source to the transmission circuit, and switch means operable by a magnetic field, said switch means being connected between the battery and the transmission circuit; a slot defined in the case body close to the switch means, said slot and switch means being separated by a partition wall member; a permanent magnet for inserting into a predetermined position of said slot to apply a magnetic field for operating the switch means; and an elongated electric conducting member, one end of which is connected with an end portion of said permanent magnet and the other end connected with an output terminal of said transmission circuit, said switch means being turned off when said permanent magnet is inserted in the predetermined position in said slot and being turned on when the permanent magnet is displaced from the predetermined position, thereby starting the transmission circuit to radiate an electromagnetic wave from said electric conducting member, said device further comprising a fixed receiver for receiving the electromagnetic wave radiated from the electrical conducting member and display means for displaying a message in response to an output signal of the receiver.
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Specification