Patents by Inventor Tetuo Kawakami

Tetuo Kawakami 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).

  • Apparatus for performing plural operations on a common workpiece
    Patent number: 4756238
    Abstract: An actuator including a first cylinder chamber and a second cylinder chamber defined as separate entities in a cylinder for receiving a first piston and a second piston therein respectively. One of the first and second cylinder chambers is connected to an oil pressure source and the other cylinder chamber is connected to an air pressure source. A piston rod of the first piston and a piston rod of the second piston which move in relative sliding movement have at their forward ends separate operating portions for performing operations on a common workpiece.
    Type: Grant
    Filed: December 12, 1986
    Date of Patent: July 12, 1988
    Assignees: Kyoho Machine Works, Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Kazuo Naruse, Hideaki Tobita, Tetuo Kawakami