REMOTE ALARM SYSTEM
First Claim
1. In a remote alarm system, a portable remote radio transceiver for transmitting and receiving electromagnetic wave signals propagated through the atmosphere, said remote transceiver being small enough to be carried about on one'"'"''"'"'s person, a stationary radio transceiver operatively tuned to receive from and to transmit to said remote radio transceiver electromagnetic wave signals propagated through the atmosphere, said stationary transceiver being situated at an installation which is to be protected against unauthorized access, a source of electrical energy operatively connected to said stationary transceiver, means at said remote transceiver for activating and deactivating said stationary transceiver, means operatively connected to said stationary transceiver and to said installation for responding to an attempt at unauthorized access to said installation to transmit a signal from said stationary transceiver to said remote transceiver, and means at said remote transceiver for giving an alarm when said remote transceiver receives said signal.
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Accused Products
Abstract
A remote alarm system for transmitting an alarm signal to a remote receiver when unauthorized access to a given installation is attempted. A remote portable radio transceiver is capable of receiving signals through the atmosphere from and transmitting signals through the atmosphere to a stationary radio transceiver which is operatively tuned to the remote transceiver for also receiving and transmitting signals from and to the remote transceiver. The stationary transceiver is located at the installation which is to be protected against unauthorized access, and a source of electrical energy is connected with the stationary transceiver. Connected to the installation as well as to the stationary transceiver is a switch for responding to an attempted unauthorized access so as to transmit a signal from the stationary transceiver to the remote transceiver. At the remote transceiver is an alarm which responds to the latter signal for warning the carrier of the remote transceiver that an attempted unauthorized access is being made at the installation.
78 Citations
11 Claims
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1. In a remote alarm system, a portable remote radio transceiver for transmitting and receiving electromagnetic wave signals propagated through the atmosphere, said remote transceiver being small enough to be carried about on one'"'"''"'"'s person, a stationary radio transceiver operatively tuned to receive from and to transmit to said remote radio transceiver electromagnetic wave signals propagated through the atmosphere, said stationary transceiver being situated at an installation which is to be protected against unauthorized access, a source of electrical energy operatively connected to said stationary transceiver, means at said remote transceiver for activating and deactivating said stationary transceiver, means operatively connected to said stationary transceiver and to said installation for responding to an attempt at unauthorized access to said installation to transmit a signal from said stationary transceiver to said remote transceiver, and means at said remote transceiver for giving an alarm when said remote transceiver receives said signal.
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2. The combination of claim 1 and wherein said remote transceiver includes a means for transmitting a signal to said stationary transceiver, and means at said stationary transceiver for responding to the latter signal for sounding an audible alarm.
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3. The combination of claim 1 and wherein said installation includes doors capable of being locked, means at said remote transceiver for transmitting a signal to said stationary transceiver, and means operatively connected to said stationary transceiver and locks of said doors for automatically actuating said locks to prevent opening of said doors when said stationary transceiver receives said signal from said remote transceiver.
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4. The combination of claim 1 and wherein said installation is a vehicle, a primary circuit, an ignition switch, and a shift lever switch means connected in series with each other and all connected to said source, said shift lever switch means preventing flow of current from said source to said primary circuit when a shift lever is moved from a neutral or park position to any drive position or to a reverse position.
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5. The combination of claim 1 and wherein said means responding to attempted access to said installation is a door switch which transmits the signal from said stationary to said remote transceiver upon opening of a door.
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6. The combination of claim 1 and wherein said means responding to attempted access is a window switch actuating said stationary transceiver to transmit a signal to said remote transceiver upon opening of a window.
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7. The combination of claim 1 and wherein said installation is a vehicle having a hood, and said means responding to unauthorized access is a hood switch actuating said stationary transceiver to transmit a signal to said remote transceiver upon opening of a hood.
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8. The combination of claim 1 and wherein installation is a vehicle having a horn operatively connected to said stationary transceiver and means at said remote transceiver for transmitting to said stationary transceiver a signal for actuating said horn.
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9. The combination of claim 1 and wherein said installation is a vehicle having windows, doors, and a hood, said means responding to unauthorized access including a window switch, a door switch, and a hood switch all connected in parallel to said stationary transceiver for transmitting a signal therefrom to said remote transceiver when the hood, a door, or a window of the vehicle are opened.
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10. The combination of claim 9 and wherein the vehicle has a horn operatively connected to said stationary transceiver to be actuated thereby, and means at said remote transceiver for transmitting a signal to said stationary transceiver for actuating said horn.
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11. The combination of claim 9 and wherein the vehicle has a door lock means operatively connected to said stationary transceiver to be actuated thereby for locking the doors, and means at said remote transceiver for transmitting to said stationary transceiver a signal for actuating the door lock means to lock the doors.
Specification