Patents by Inventor Kazuo Sunami

Kazuo Sunami 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).

  • Brake booster system including a power piston slidably supported by a resilient convolution chamber at its peripheral edge
    Patent number: 5716110
    Abstract: A housing of a brake booster 100 includes a pair of shells 1 and 5 and a ring 3 interposed therebetween which cooperatively define an interior space for accommodating a power piston 13. The interior space is divided into a front chamber 15 and a rear chamber 16 partitioned by the power piston 13. The power piston 13 has a diaphragm 2 interposed between the front chamber 15 and the rear chamber 16. The diaphragm 2 is shiftable in an axial direction thereof in response to pressure imbalance between the front chamber 15 and the rear chamber 16. A convolution chamber 2d is provided between an inner side of the housing and an outer peripheral edge of the diaphragm 2. The convolution chamber 2d is defined by a resilient annular member flattened in the axial direction and isolated from both the front chamber 15 and the rear chamber 16.
    Type: Grant
    Filed: January 23, 1996
    Date of Patent: February 10, 1998
    Assignees: Nippondenso Co., Ltd., Nippon Soken, Inc.
    Inventors: Kazuo Sunami, Kenji Takeda, Mitsuo Inagaki, Hiroyuki Shinkai