Abstract: A novel shape memory alloy electrical switch is disclosed, including both momentary and especially a latching relay. The switch/relay disclosed is particularly useful in low power control of appliances, including i.a. refrigerators. Used with a microprocessor, microcontroller, or like device to control the shape memory alloy switch/relay, an adaptive control routine may be included which facilitates an especially low-power dissipation, highly effective appliance control module, especially suitable for refrigerators. The disclosed refrigerator control module can be manufactured at low cost with high reliability.
Type:
Grant
Filed:
June 12, 1998
Date of Patent:
October 17, 2000
Assignee:
Robertshaw Controls Corp.
Inventors:
Gregory Barnes, Jon Skekloff, David D. Martin, Douglas Ray