Resources Contact Us Home
Micro-electromechanical actuator with control logic circuitry

Image Number 13 for United States Patent #7028474.

A micro-electromechanical actuator includes a substrate. An elongate actuator arm has a fixed end portion that is fast with the substrate and a free end portion that is spaced from the substrate. The elongate actuator arm incorporates a heating circuit that is connectable to a power supply to heat the actuator arm. At least a portion of the actuator arm is of a material having a coefficient of thermal expansion which is such that the material is capable of thermal expansion to do work. The heating circuit is positioned to generate differential thermal expansion and contraction when heated and subsequently cooled to cause reciprocal displacement of the free end portion of the actuator arm. Control logic circuitry is positioned on the substrate along an elongate region defined on the substrate and interposed between the actuator arm and the substrate. The control logic circuitry is connected to the heating circuit to enable and disable the power supply according to a control signal received by the control logic circuitry.

  Recently Added Patents
System and method for updating firmware
Method and apparatus for representing sensory effects and computer readable recording medium storing user sensory preference metadata
System and transceiver clocking to minimize required number of reference sources in multi-function cellular applications including GPS
Methods of prognosing a rheumatoid arthritis remission phenotype
Method of manufacturing nitride semiconductor and nitride semiconductor element
Digital photographing apparatus
  Randomly Featured Patents
Animal trap
Manufacturing apparatus and method for semiconductor device
Telephone relay system
Graphical subclassing
Method and system for detecting and removing hidden pestware files
Image display apparatus, image display method, and image supply apparatus
Sulky for self-propelled machines
Digital method of measuring driver slew rates for reduced test time
Method of isolating strains of the Lymantria dispar nuclear polyhedrosis virus
Refrigerator through the door ice dispenser