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Tandis , Inc
26932 Vista Terrace
Lake Forest, CA 92630
Tel: (949) 830-0156
Fax: (949) 830-0158
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Patents 
In the field of contactless smart card assembly, Tandis, Inc. owns two patents in twenty-one countries and, after the transfer of Ampac patents to Tandis Inc., six patents in three countries
 
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Thermoelectrically controlled blower |
A compact, energy efficient blower that is controlled by a Peltier thermoelectric device to supply either hot or cold air. The Peltier device is sandwiched between a pair of heat exchangers that are surrounded by a plastic enclosure. Each heat exchanger includes a plurality of parallel aligned thermal energy conducting fins that are folded to maximize the surface area thereof. A fan is mounted atop the enclosure to pump a first supply of intake air through a first air flow path in a first heat exchanger at one side of the Peltier device to exhaust the waste energy emitted by the Peltier device and collected by the first heat exchanger. The fan also pumps a second supply of intake air through a second air flow path in the second heat exchanger at the opposite side of the Peltier device to blow the useful energy emitted by the Peltier device and collected by the second heat exchanger to an application device or a space within which the blower is located. The first and second heat exchangers are turned upside down relative to one another at opposite sides of the Peltier device so that the waste energy and useful energy are pumped from the blower in directions which are aligned perpendicular to one another.
| 26,626,364 |
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High speed system for embedding wire antennas in an array
of smart cards |
A high speed system for embedding antenna wire within a non-conductive (e.g. plastic) sheet on which electronic chips are mounted for manufacturing a plurality of smart cards, or the like. The antenna wire is installed in the non-conductive sheet by an ultrasonic actuator that is moved up and down relative to the sheet. The movement of the actuator relative to the substrate is controlled by the interaction between a stationary voicecoil magnet and a voicecoil that is coupled to the ultrasonic actuator and moveable with the slide assembly. Antenna wire is fed to the ultrasonic actuator from an antenna wire dispensing spool via an idler assembly. The idler assembly includes an encoder which is responsive to an increase in tension in the antenna wire feed line. Depending upon the output of the encoder, the speed and rotation of the wire dispensing spool is controlled until the tension in the antenna wire feed line is eliminated.
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| 6,575,229 |
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Heat sink having folded fin heat exchanger core |
A heat exchanger core for a heat sink having a plurality of folded heat conductive fins. Each folded heat conducting fin has a front face, a back face spaced from the front face, a top connected between the front and back faces, open opposite sides that communicate with the atmosphere, and an air intake opening that extends vertically through the top for receipt of a supply of fan blown air. The fins are arranged face-to-face one another to establish laterally extending primary and supplemental air exhaust cavities through the heat exchanger core which run between the vertically extending air intake openings and the open opposite sides of the fins. Thus, the heat exchanger core will have non-linear air flow paths by which heat collected by the plurality of fins is blown into the atmosphere at the open opposite sides thereof. By virtue of the foregoing, the heat exchanger core provides maximum surface area, efficient heat transfer, and optimal air flow so that the heat generated by a source (e.g. a CPU) can be effectively collected and exhausted to the atmosphere.
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