Patents by Inventor Melissa Ann Hamilton

Melissa Ann Hamilton 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).

  • Hydraulic solenoid control valve
    Patent number: 5707039
    Abstract: A hydraulic solenoid control valve has the capability of operating at high pulse width modulation frequencies due to precision alignment of the armature and freedom from contamination. An alignment tube coupled at one end to one pole piece aligns coaxially with the armature while a non-magnetic bearing coupled to the other end of the alignment tube also aligns coaxially with the armature. Fluid infusion into the armature cavity is prevented by way of the alignment tube which surrounds the armature.
    Type: Grant
    Filed: April 8, 1996
    Date of Patent: January 13, 1998
    Assignee: General Motors Corporation
    Inventors: Melissa Ann Hamilton, Kris Renee Stark, Hayse William Warrum, Jr.