Electric heating – Heating devices – Combined with diverse-type art device
Patent
1996-09-05
2000-10-17
Walberg, Teresa
Electric heating
Heating devices
Combined with diverse-type art device
219528, 604281, 337140, H05B 100
Patent
active
061335479
ABSTRACT:
A distributed activation system for a unitary sheet of electrically conductive or insulative shape memory alloy having a sufficiently small section to limit the lateral flow of heat including at least one heating element disposed on the shape memory alloy sheet for locally heating an adjacent portion of the sheet such that the adjacent portion assumes a predetermined shape when activated to its threshold temperature. The activation system may be configured for shape memory alloy apparatus and related methods in combination with a control system for selectively activating discrete shape memory alloy portions with various combinations of at least one heating element that receive an adjustable current such that the resultant local heating causes the sheet to assume a desired overall shape. Methods of forming and selectively activating two-dimensional sheets of electrically conducive and insulative shape memory alloy are further provided.
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Duthler Reed A.
Fuqua Shawntina
Medtronic Inc.
Patton Harold R.
Walberg Teresa
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