Patents by Inventor Donald Wai-Chung Chiu

Donald Wai-Chung Chiu 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).

  • Clamp and method for operating same
    Patent number: 7934710
    Abstract: In an embodiment, there is disclosed a clamp having a frame and a latch member mounted within the housing so that the latch member is translatable along a displacement axis and rotatable about the displacement axis. A cam follower mounted to the frame engages a channel operatively associated with the latch member. An actuator mounted to the frame and operatively associated with the latch member translates the latch member along the displacement axis. The engagement of the cam follower and channel causes the latch member to be rotated about the displacement axis as the latch member is translated along the displacement axis.
    Type: Grant
    Filed: April 11, 2007
    Date of Patent: May 3, 2011
    Assignee: Verigy (Singapore) Pte. Ltd.
    Inventor: Donald Wai-Chung Chiu
  • CLAMP WITH A NON-LINEAR BIASING MEMBER
    Publication number: 20090255098
    Abstract: In an embodiment, there is disclosed a clamp, having a housing; a latch member extending from within the housing, and the latch member translatable along a displacement axis; an actuator mounted to the housing and operatively associated with the latch member to translate the latch member along the displacement axis; and a nonlinear biasing member operatively associated with the latch member and the housing, and the nonlinear biasing member positioned to bias the latch member toward a retracted position. Other embodiments are also disclosed.
    Type: Application
    Filed: April 11, 2008
    Publication date: October 15, 2009
    Inventors: John William Andberg, Donald Wai-Chung Chiu
  • Clamp and method for operating same
    Patent number: 7213803
    Abstract: A clamp having a frame and a latch member mounted within the frame so that the latch member is translatable along a displacement axis and rotatable about the displacement axis. A guide pin mounted to the frame engages a channel operatively associated with the latch member. An actuator mounted to the frame and operatively associated with the latch member translates the latch member along the displacement axis. The engagement of the guide pin and channel causes the latch member to be rotated about the displacement axis as the latch member is translated along the displacement axis.
    Type: Grant
    Filed: January 24, 2005
    Date of Patent: May 8, 2007
    Assignee: Verigy Pte. Ltd.
    Inventor: Donald Wai-Chung Chiu