Patents by Inventor Atsuhi Muramatsu

Atsuhi Muramatsu 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).

  • Fluid-filled elastic mount having two orifices passages one of which is selectively opened and closed by means of vacuum pressure
    Patent number: 5180148
    Abstract: A fluid-filled elastic mount is disclosed which includes a first and a second support member, an elastic body for interconnecting the support members and partially defining a pressure-receiving chamber, and a partition structure which cooperates with a first and a second flexible diaphragm to define a first and a second equilibrium chamber. The elastic mount has a first and a second orifice passage for fluid communication between the pressure-receiving chamber and the first and second equilibrium chambers, respectively. The elastic mount further has an air chamber on one side of the second diaphragm remote from the second equilibrium chamber, and an operating chamber separated from the air chamber by a flexible partition wall.
    Type: Grant
    Filed: January 31, 1992
    Date of Patent: January 19, 1993
    Assignee: Tokai Rubber Industries, Ltd.
    Inventor: Atsuhi Muramatsu