Patents by Inventor Harry Sugandi

Harry Sugandi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Actuators based on ferromagnetic shape memory alloy composites
    Patent number: 7688168
    Abstract: Linear actuators (also known as an inchworm actuator) including a magnetically actuatable shape memory alloy (SMA) are described. The linear actuators include a bar and an actuator assembly, configured to achieve a linear displacement of the actuator assembly relative to the bar. A hybrid magnetic trigger including an electromagnet and a permanent magnet is used to selectively attract the magnetically actuatable SMA toward the magnetic trigger. The motion of the magnetically actuatable SMA can be converted to a linear displacement. The magnetically actuatable SMA can be implemented using a SMA exhibiting both ferromagnetic and SMA properties, or by a ferromagnetic mass coupled with an SMA (i.e., a ferromagnetic SMA composite). Linear actuators including bars incorporating a ratchet mechanism, and featureless bars are described. A hydraulic system incorporating actuators including magnetically actuatable SMA membranes is also disclosed.
    Type: Grant
    Filed: September 8, 2005
    Date of Patent: March 30, 2010
    Assignee: University of Washington
    Inventors: Minoru Taya, Victor Cheng, Harry Sugandi, Yuanchang Liang, Hsiuhung Chen, Chi-Yuan Wang
  • Actuators based on ferromagnetic shape memory alloy composites
    Publication number: 20070236314
    Abstract: Linear actuators (also known as an inchworm actuator) including a magnetically actuatable shape memory alloy (SMA) are described. The linear actuators include a bar and an actuator assembly, configured to achieve a linear displacement of the actuator assembly relative to the bar. A hybrid magnetic trigger including an electromagnet and a permanent magnet is used to selectively attract the magnetically actuatable SMA toward the magnetic trigger. The motion of the magnetically actuatable SMA can be converted to a linear displacement. The magnetically actuatable SMA can be implemented using a SMA exhibiting both ferromagnetic and SMA properties, or by a ferromagnetic mass coupled with an SMA (i.e., a ferromagnetic SMA composite). Linear actuators including bars incorporating a ratchet mechanism, and featureless bars are described. A hydraulic system incorporating actuators including magnetically actuatable SMA membranes is also disclosed.
    Type: Application
    Filed: September 8, 2005
    Publication date: October 11, 2007
    Applicant: University of Washington
    Inventors: Minoru Taya, Victor Cheng, Harry Sugandi, Yuanchang Liang, Hsiuhung Chen, Chi-Yuan Wang