Ningbo Signatronic Technologies, Ltd. Patent applications |
Patent application number | Title | Published |
20140218197 | Narrow Width Acousto-Magnetic Anti-Theft Marker Having Multiple Resonators - This invention is about a commercial anti-theft device, more specifically involving in a narrow acousto-magnetic (AM) anti-theft marker having multiple resonators. A type of narrow AM anti-theft marker with multiple resonators includes in elongated house, resonators, house cover and magnetic bias pieces. The resonators are placed inside the cavity of the house, Aforementioned house bottom is connected to house cover so that the resonators are enclosed inside the house. The number of aforementioned resonators is two to five; the width of resonators is 1.6-5.3 mm. This anti-theft marker has high performance/cost ratio. Because resonators with smaller than conventional width are used, it meets the customer demands for protecting smaller or more exquisite merchandise. Meanwhile it saves expensive amorphous alloys of resonators and alloys of bias and double tapes, led to lower raw material costs. | 08-07-2014 |
20130306744 | Acousto-Magnetic Anti-Theft Label with a High Coercivity Bias and Method of Manufacture - A high coercivity bias piece for making acousto-magnetic labels is made of an alloy strip with 10-14% weight percent Mn, less than 7% weight percent of one or more other transitional metals, with the balance Fe, after cold rolling to final gage, going through a final aging heat treatment at below 590 C, longer than 5 minutes. The strip thickness is 0.065-0.18 mm with coercivity measured by direct current method being 56-90 Oe. The method of making the high coercivity bias piece is to cold roll the strip to 0.07-0.15 mm with aging temperature at 450-570 C, for 0.5-20 hours to form a magnetic strip with coercivity of 60-85 Oe, followed by cutting the strip to required size. This high coercivity bias piece is manufactured without expensive Co and Ni materials, showing that a low cost Fe-(10-14% weight percent Mn) based alloy can be used to make high coercivity bias. | 11-21-2013 |