Patents by Inventor Edward James Hayes, Jr.

Edward James Hayes, Jr. 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).

  • Piezoelectric controlled common rail injector with hydraulic amplification of piezoelectric stroke
    Patent number: 5779149
    Abstract: A common rail fuel injector utilizes a piezoelectric actuator (8) to open and close the injector valve (3). Intermediate the piezoelectric actuator and the injector valve are a large diameter first piston (9) in fluid communication with a smaller diameter second piston to multiply the actuation extension of the piezoelectric actuator. The second piston (11) operates a poppet valve (1) to hydraulically control the injector valve.
    Type: Grant
    Filed: July 2, 1996
    Date of Patent: July 14, 1998
    Assignee: Siemens Automotive Corporation
    Inventor: Edward James Hayes, Jr.