Thermoelectric temperature control apparatus
CA 1071714 A · Owner: The Perkin-Elmer Corporation · Inventors: Staunton, John J.J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Control of test chambers or specimens to stabilized temperatures at set points over a wide temperature range is accomplished with improved response time by an arrangement of cascaded Peltier affect heat pumps. Generally power to a first Peltier unit in the arrangement is controlled relatively to the temperature deviation of the specimen from the desired set point, while power to a second Peltier unit therein is controlled proportionally to the temperature differential across the first Peltier unit. In applications where large thermal losses to ambient occur a, portion of the power control signal to the second Peltier unit is applied to offset the temperature set point as a compensation for …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted February 12, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 12, 1997.
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Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.