Patents by Inventor Jerald J. Marcus

Jerald J. Marcus 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).

  • Patent number: 5007458
    Abstract: A solenoid actuated pneumatic valve (50) has a valve body (52). The valve includes an inlet (60), a first outlet (62) and a second outlet (64). The body has a first internal chamber (66) and a second internal chamber (68). The first and second chambers are connected through a first opening (80). The body also includes a third chamber (76) connected to the first chamber through a second fluid opening (84). A stem (88) extends through the first, second and third chambers and is coaxial with the first and second fluid openings. A first poppet diaphragm (112) is mounted on the stem in the second chamber. The poppet diaphragm includes a face (118) sized for blocking the first opening, and a convoluted web portion (120) which extends radially outward and attaches to the valve body. A second poppet diaphragm (130) is mounted on the stem in the third chamber. The second diaphragm has a face sized for blocking the fluid opening between the first and third chambers.
    Type: Grant
    Filed: April 23, 1990
    Date of Patent: April 16, 1991
    Assignee: Parker Hannifin Corporation
    Inventors: Jerald J. Marcus, John F. Berninger