MOVEMENT DETECTOR

• US 3,618,067 A
• Filed: 11/04/1969
• Issued: 11/02/1971
• Est. Priority Date: 11/04/1969
• Status: Expired due to Term

• Current Assignee: Donald P. Devale, Eugene F. Piraino
• Original Assignee: Donald P. Devale, Eugene F. Piraino
• Inventors: Piraino, Eugene F., DeVale, Donald P.
• Primary Examiner(s): Caldwell, John W.
• Assistant Examiner(s): Partridge, Scott F.
• Application Number:
  US04/873,813
• Time in Patent Office: 728 Days
• Field of Search: 340/282,283,280,276,224,421,286 325/29,102,111,117,152,66,364 335/153 200/61.62 180/114,98 246/30
• US Class Current: 340/518
• CPC Class Codes: B60R 25/1012 Zone surveillance means, e.g. parking lots, truck depots

Abstract

A motion detector for protecting items such as loaded trucks such as when parked in warehousing facilities which includes a transmitter affixed to the truck and which includes a tamperproof switch actuated by the truck frame or other portion such that if the truck is moved a given distance from its parked position or if the transmitter is removed from the truck an alarm will sound at a remote position which continuously monitors the output of the transmitter. The central monitoring position may simultaneously monitor a plurality of transmitters and may be interconnected with police or other remote monitoring authorities so as to assure continuous protection for the truck load.

Claims

1. A monitoring system for protecting a plurality of movable objects comprising, a plurality of transmitters connected to said plurality of movable objects, each of said transmitters having means for turning it off when the transmitters move relative to its associated movable object, said means for turning each transmitter off comprising a magnetic responsive switch connected to the respective transmitter and which turns the transmitter on when the transmitter is placed near a magnetic material of said movable object but which turns it off when said transmitter is removed from said movable object, receiving means located at a position remove from said transmitters receiving a plurality of signals from said plurality of transmitters, distributing means including a sequential scanning means connected to the output of said receiving means, a plurality of alarms connected to said distributing means and adapted to indicate when one of said plurality of transmitters is turned off or when one of the transmitters is moved relative to the receiving means out of the range of a signal effective to prevent the alarm from being actuated, and a second alarm system connected in circuit with said plurality of alarms and located at a remote position from said receiving means to indicate at a remote position when one of the plurality of transmitters is turned off or moved, and further including means including a reset switch whereby when said second alarm is energized the system cannot be rendered inactive at the position of the receiving means.

2. A monitoring system according to claim 1 comprising a switch for disconnecting said second alarm system.

3. A monitoring system according to claim 1 comprising a plurality of indicators connected to said distributing means to indicate which of said transmitters is turned off or moved.