ALARM SYSTEM FOR ROLLING SHUTTERS

• US 20150218883A1
• Filed: 10/03/2013
• Published: 08/06/2015
• Est. Priority Date: 10/09/2012
• Status: Active Grant

• Current Assignee: B.M.S. Investment Group (H.A.S.) Ltd.
• Original Assignee: B.M.S. Investment Group (H.A.S.) Ltd.
• Inventors: Hanuka, Benny
• Granted Patent: US 9,410,372 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: E06B 2009/1505 Slat details
• CPC Class Codes: E06B 2009/1538 Slats directly connected
• CPC Class Codes: E06B 2009/1583 inserted in slat cavity
• CPC Class Codes: E06B 9/15 with closing members formed of slats or the like
• CPC Class Codes: E06B 9/165 with slats disappearing in each other; with slats the distance between which can be altered
• CPC Class Codes: E06B 9/17 Parts or details of roller shutters, e.g. suspension devices, shutter boxes, wicket doors, ventilation openings
• CPC Class Codes: E06B 9/56 Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor devices of general interest specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material B65H75/34
• CPC Class Codes: E06B 9/58 Guiding devices
• CPC Class Codes: E06B 9/86 against unauthorised opening
• CPC Class Codes: G08B 13/00 Burglar, theft or intruder alarms
• CPC Class Codes: G08B 13/22 Electrical actuation

Abstract

An alarm system for rolling shutter comprised of plurality of alarm sensors is described. An alarm sensor is comprised of a conductive wire that is threaded within a slat and is connected in both sides to slat edge elements. The slat edge elements have a moving electrical contact that can be pulled out towards the inner wall of the shutter rail by a magnet. In selected heights along the rails, on both rails, a rail electric element comprising a magnet and a rail electrical contact are installed. A wire is connected from each rail electrical contact to an alarm control box. When the slat, which includes the slat-wire, is positioned in the same height as the rail electric elements, the moving contact on the slat makes a contact with the rail electric contact, thus creating a continuous electrical circuit from one rail electrical contact, through the slat, to the second rail electric contact. An attempt to move a slat, move the rails or cut the slat, will open the electrical circuit and generate an alarm, signal. An attempt to by-pass the electrical circuit is detected by the change in the line resistance.

Claims

1. An alarm system embedded in a rolling shutter, the alarm system is comprised of:

a) Two vertical shutter rails;

b) at least one pair of rail electric elements mounted on the inner wall of each of the shutter rails, where said rail electric elements are mounted at the same height on both rails, where said rail electric element is comprised of means for the generation of magnetic field and rail electric contact;

c) a shutter comprised of plurality of interconnected slats where each slat is comprised of slat body and two slat edge elements, where said elements slide in the shutter rails;

d) at least one slat of the shutter is a sensor-slat comprised of edge elements which includes slat moving contact capable of moving horizontally by a magnet and a slat-wire, passing within the slat body, connected to both moving contacts;

the slat-wire and the slat moving contacts are electrically isolated from the slat'"'"'s body and edge elements; and

e) an alarm control box comprised of electric terminals and means for detecting discontinuity in electric circuit;

the alarm control box is electrically connected to the rail electric contacts.

2. An alarm system as stated in claim 1 wherein the slat-wire of at least one sensor-slat, has electric resistance and the alarm control box includes means for detecting change in circuit resistance.

3. An alarm system as stated in claim 1 wherein within at least one sensor-slat a vibration sensor is connected in series with the slat-wire, and the alarm control box includes means for detecting rapid changes in electric circuit.

4. An alarm system installed in a rolling shutter, the alarm system is comprised of:

a) Two vertical shutter rails;

b) at least one pair of rail electric elements mounted on the inner wall of each of the shutter rails, where said rail electric elements are mounted at the same height on both rails, where said rail electric element is comprised of rail electric contact;

c) a shutter comprised of plurality of interconnected slats where each slat is comprised of slat body and two slat edge elements, where said elements slide in the shutter rails;

d) at least one slat of the shutter is a sensor-slat, comprised of edge elements which includes slat moving contact capable of moving horizontally and a slat-wire, passing within the slat body, connected to both moving contacts;

the slat-wire and the slat moving contacts are electrically isolated from the slat'"'"'s body and edge elements; and

e) an alarm control box comprised of electric terminals and means for detecting discontinuity in electric circuit, the alarm control box is electrically connected to the rail electric contacts.

5. An alarm system as stated in claim 4 wherein the slat-wire of at least one sensor-slat has electric resistance and the alarm control box includes means for detecting change in circuit resistance.

6. An alarm system as stated in claim 4 wherein within at least one sensor-slat a vibration sensor is connected in series with the slat-wire, and the alarm control box includes means for detecting rapid changes in electric circuit.