Personal security apparatus
First Claim
1. An apparatus comprised of first and second devices mountable at respective first and second locations on a person'"'"'s body, said first device including a first transmitter for normally transmitting a first electromagnetic signal, said first transmitter being responsive to a first predetermined condition for transmitting a second electromagnetic signal in lieu of said first signal, said second device including a receiver for receiving said first and second signals and a second transmitter for transmitting a third electromagnetic signal in response to a second predetermined condition, said second predetermined condition being indicated by either said second signal being received by said receiver or said first signal not being received by said receiver, at least said second and third signals being detectable by a remote receiver.
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Accused Products
Abstract
An apparatus is provided for monitoring the location of a person and for determining whether the person is in distress. The apparatus includes a transmitter and a transceiver, which are adapted to be worn at different locations on the person'"'"'s body. The transmitter normally transmits a first electromagnetic signal, which is detectable by the transceiver and by at least one remote receiver. When the person is in distress, the transmitter transmits a second electromagnetic signal in lieu of the first signal. The transceiver is responsive to the second signal for generating a third electromagnetic signal, which also indicates that the person is in distress. The remote receiver is responsive to either or both of the second and third signals for generating an alarm signal indicating the distress condition. The transceiver also generates the third signal in response to the absence of the first signal, which may occur when the transmitter is removed from the person'"'"'s body and the distance between the transmitter and transceiver becomes too great for the transceiver to receive the first signal, or due to transmitter malfunctional. The third signal therefore provides a redundancy feature in the event of failure of the transmitter to generate the second signal. The apparatus not only allows the person'"'"'s location to be continuously monitored, but also indicates when the person is in need of assistance.
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Citations
20 Claims
- 1. An apparatus comprised of first and second devices mountable at respective first and second locations on a person'"'"'s body, said first device including a first transmitter for normally transmitting a first electromagnetic signal, said first transmitter being responsive to a first predetermined condition for transmitting a second electromagnetic signal in lieu of said first signal, said second device including a receiver for receiving said first and second signals and a second transmitter for transmitting a third electromagnetic signal in response to a second predetermined condition, said second predetermined condition being indicated by either said second signal being received by said receiver or said first signal not being received by said receiver, at least said second and third signals being detectable by a remote receiver.
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9. Apparatus for monitoring the location of a person, comprising, in combination:
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transmitter means for normally transmitting a first electromagnetic signal, said transmitter means being adapted to be worn by the person, said transmitter means being responsive to a first predetermined condition for transmitting a second electromagnetic signal in lieu of said first signal; transceiver means for receiving said first and second signals and for transmitting a third electromagnetic signal in response to a second predetermined condition, said second predetermined condition being indicated by either said second signal being received by said transceiver means or said first signal not being received by said transceiver means, said transceiver means being adapted to be worn by the person at a separate location on the person'"'"'s body from said transmitter means; and remote receiver means adapted to receive the second and third signals. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. Apparatus for monitoring the location of a person, comprising, in combination:
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transmitter means having a first transmitter for normally transmitting a first electromagnetic signal, said first transmitter being responsive to a first predetermined condition indicating that the person is in distress for transmitting a second electromagnetic signal in lieu of the first signal, said transmitter means being adapted to be worn by the person; transceiver means having a receiver for receiving said first and second signals and a second transmitter for transmitting a third electromagnetic signal in response to a second predetermined condition indicating that the person is in distress, said second predetermined condition being indicated by either said second signal being received by said receiver or said first receiver not being received by said receiver, said transceiver means including means for simultaneously enabling said second transmitter to transmit said third signal and disabling said receiver in response to said first predetermined condition, said transceiver means being adapted to be worn by the person at a different location on the person'"'"'s body from the transmitter means; and remote receiver means located at a remote location from said transmitter means and said transceiver means for receiving said first, second and third signals and for generating an alarm signal in response to either or both of said second and third signals.
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Specification