Alarm system sensing device

• US 3,932,857 A
• Filed: 05/23/1974
• Issued: 01/13/1976
• Est. Priority Date: 07/06/1971
• Status: Expired due to Term

• Current Assignee: Salient Electronics Incorporated
• Original Assignee: Salient Electronics Incorporated
• Inventors: Scholtz, William R., Way, Blaine A.
• Primary Examiner(s): Habecker, Thomas B.
• Application Number:
  US05/472,742
• Time in Patent Office: 600 Days
• Field of Search: 340/240, 340/280
• US Class Current: 340/568.2
• CPC Class Codes: G08B 13/00 Burglar, theft or intruder alarms
• CPC Class Codes: G08B 13/1454 Circuit arrangements thereof
• CPC Class Codes: G08B 13/1463 Physical arrangements, e.g. housings devices to prevent theft or loss of purses, luggage or hand carried bags A45C13/18

Abstract

An alarm sensor device having two separable portions. One portion is adhesively attachable to the surface of an object. The other section is supplied with a flow of regulated energy. A measurable energy coupling is provided between the two portions and the system is designed so that the act of physical separation of the two sections is detected so as to activate an alarm system. The result is a protective device in the form of an anti-theft alarm system for preventing unauthorized removal of an otherwise movable object from a specific physical location.

Claims

1. An attachment mechanism for use in an alarm system sensing device comprising:

a housing having one surface physically divided into two mechanically separable component parts;

the outer exposed surfaces of the two separable component parts containing chemically adhesive material so as to allow the device to be adhesively attached to the surface of an object in a manner wherein two chemical bonds of attachment occur between the surface of the object and the respective surface areas of each of the two mechanically separable component parts;

one of the two separable component surface parts containing means for mechanical interconnection to the structure of the protective housing in a manner which creates a mechanical strength of attachment which is superior to the relative strength of attachment of the adhesive bonding which occurs between that same separable component part and the surface of an object when it is attached thereto;

the second of the two separable component parts containing means for mechanical interconnection to the structure of the protective housing in a manner which creates a mechanical strength of attachment which is inferior to the relative strength of attachment of the adhesive bonding which occurs between that same separable component part and the surface of an object when it is attached thereto;

the relationship of relative adhesive and mechanical strengths of interconnections between the object surface, the two separable component parts, and the protective housing being such that the forceable detachment of the device from the surface of an object to which it has been adhesively attached will result in the physical displacement of the two separable component parts relative of one part to the other; and

the interior of the housing including the separable component parts adapted to receive therein and be attached thereto a variety of secondary component parts, said secondary parts being themselves portions of instrument measuring systems capable of detecting and reacting to changes in the relative physical positions of at least two separable component parts.

2. The invention in accordance with claim 1 wherein the separable component part designated to have an inferior relative bonding strength being physically designated to form adhesively upon the attachment surface of an object, a perimeter boundary protectively enclosing and encompassing a central surface area occupied by the separable component part designated to have a superior relative bonding strength.

3. The invention in accordance with claim 1 wherein the housing and separable component parts are configured so as to be physically adaptable to adhesive attachment upon the surfaces of curved or irregularly shaped objects.

4. The invention in accordance with claim 1 wherein the housing is rectangular in configuration and has a minimum height so as to facilitate the provision of a minimum projection of the device above the surface of the object to which it is applied.

5. The invention in accordance with claim 1 wherein the housing is provided with suitable apertures and connector devices so as to cause the mechanism to be compatible with instrument measuring and detection equipment utilizing physical conduits for the transmission of required energies.