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US 7,921,548 B2Granted
Method of manufacturing a heater retention spring
AssigneePhillips & Temro Industries Inc.
InventorPaul T. Mueller
Life of this patent
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Abstract
A method of manufacturing a heater having a heating element, an insulator and a spring is disclosed. The method includes forming a spring from an annealed superalloy material, heat treating the spring after forming, positioning the heating element in contact with the insulator, and biasedly engaging the spring with the insulator to maintain contact between the insulator and the heating element.
Claims6
A method of manufacturing a heater having a heating element, an insulator and a spring, the method comprising:
- forming a spring from a super alloy material;
- heat treating the spring by placing the spring in a solution maintained at 1800° F.;
- precipitation hardening the spring by heating the spring to 1350° F. for eight hours followed by ten hours of cooling and holding at 1150° F.;
- positioning the heating element in contact with the insulator;
- and
- biasedly engaging the spring with the insulator to maintain contact between the insulator and the heating element.
3 more elements
Dependencies are inferred from the claim text.