Marine security system

Details Marine security system Marine security system

1999-08-06

2001-07-24

Lefkowitz, Edward (Department: 2632)

Communications: electrical

Land vehicle alarms or indicators

Of burglary or unauthorized use

C340S429000, C340S568100

Reexamination Certificate

active

06265966

ABSTRACT:

BACKGROUND OF THE INVENTION
This invention relates generally to security systems and, more particularly, to a system which transmits an alarm signal upon sensing a change in the inertia of an article or vehicle to which a sensor assembly is attached.
Theft of vehicles or items stored therein is a recognized problem in our society. In recent times, boats kept at a marina, campground, hotel parking area, or residence have become a particular target for thieves. Expensive engine components, propellers, and fishing tackle are relatively easy to remove from the boat for use or resale by a thief. This problem is compounded at fishing competitions where dozens of boaters store their boats overnight in a central location without any type of security.
Various security systems have been proposed for detecting an unauthorized intrusion or other abnormal condition relative to a boat or other vehicle. However, a system having sensors that are easily attached to multiple locations on a boat or items stored therein and which cannot be subverted by a thief is still needed. Therefore, it is desirable to have a security system which alerts a boat owner when the inertia of a boat or a particular article stored therein is changed.
SUMMARY OF THE INVENTION
The security system according to the preferred embodiment of the present invention utilizes a plurality of sensor assemblies positioned at selected locations on a vehicle or on particular items stored therein. Each sensor assembly includes a device for sensing an acceleration or change in the inertia of the sensor assembly. A transmitter positioned within the sensor assembly is operatively connected to the sensing device and transmits a signal when a predetermined level of inertial change is detected. A switch for activating or deactivating the device is located inside its housing such that the device cannot be deactivated without first opening and thus activating an alarm. A slave transmitter/receiver unit is mounted in close proximity to the sensor assembly and receives the signal transmitted by a sensor assembly that has detected an inertial change. The slave transmitter/receiver unit may be coupled to the horn or lights of the vehicle and may activate these elements upon receipt of the signal. The signal is then amplified and transmitted to a remote station that may be located nearby or at a distance, such as at a hotel or residence of the vehicle owner. The remote station includes audible and visual alarms for alerting the vehicle owner regarding the potential theft of the protected vehicle or its contents.
Therefore, it is a general object of this invention to provide a security system which alerts a vehicle owner upon unauthorized movement of the vehicle or selected contents therein.
Another object of this invention is to provide a security system, as aforesaid, having a plurality of sensor assemblies which can be selectively positioned on vehicle components or articles.
Still another object of this invention is to provide a security system, as aforesaid, in which the sensor assemblies can detect accelerated movement of items to which they are attached.
Yet another object of this invention is to provide a security system, as aforesaid, in which each sensor assembly cannot be deactivated without first transmitting an alarm signal.
A further object of this invention is to provide a security system, as aforesaid, which activates a visual and audible alarm upon detection of intrusion.
A still further object of this invention is to provide a security system, as aforesaid, which can transmit an alarm signal to a vehicle owner at a remote location.


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patent: 3980847 (1976-09-01), Mines et al.
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patent: 5051744 (1991-09-01), Ewart
patent: 5130708 (1992-07-01), Boyden
patent: 5319698 (1994-06-01), Glidewell et al.
patent: 5393943 (1995-02-01), Furukawa et al.
patent: 5512874 (1996-04-01), Poston
patent: 5612668 (1997-03-01), Scott
patent: 5777551 (1998-07-01), Hess
patent: 5801615 (1998-09-01), Su

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