Patents by Inventor Taisei Kohayakawa

Taisei Kohayakawa 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).

  • Scroll gas compressor having asymmetric bypass holes
    Patent number: 6273691
    Abstract: It is an object of the present invention to improve the efficiency of a scroll gas compressor by operating a bypass at a proper compression ratio. To achieve the object, the present invention is constituted so that at least one pair of bypass holes whose one ends are opened in a compression chamber currently performing compression nearby a discharge vent and whose other ends communicate with a discharge chamber are asymmetrically arranged on a panel board. This structure makes it possible to improve the efficiency of the compressor by operating the bypass at an optimum compression ratio even if a difference is observed between pressure rises of a pair of symmetric compressed spaces under the compression process.
    Type: Grant
    Filed: July 17, 1997
    Date of Patent: August 14, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Takashi Morimoto, Sadayuki Yamada, Shuichi Yamamoto, Kiyoshi Sawai, Taisei Kohayakawa, Shozo Hase, Hiromasa Ashitani
  • Sealed-type scroll compressor and assembling method therefor
    Patent number: 5704122
    Abstract: In a sealed-type scroll compressor having a stationary scroll member and an orbiting scroll member, the stationary scroll member is fixed after rotating it in an orbiting direction of the orbiting scroll member by a predetermined angle from a phase angle position where a possible orbiting radius between both scroll members is made maximum at the temperature before driving the scroll compressor.
    Type: Grant
    Filed: January 14, 1997
    Date of Patent: January 6, 1998
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masahiro Tsubokawa, Osamu Aiba, Toshiharu Yasu, Shuichi Yamamoto, Hideo Hirano, Taisei Kohayakawa, Shozo Hase
  • Sealed-type scroll compressor with relatively shifted scrolls based on thermal coefficient of expansion
    Patent number: 5632610
    Abstract: In a sealed-type scroll compressor having a stationary scroll member and an orbiting scroll member, the stationary scroll member is fixed after rotating it in an orbiting direction of the orbiting scroll member by a predetermined angle from a phase angle position where a possible orbiting radius between both scroll members is made maximum at the temperature before driving the scroll compressor.
    Type: Grant
    Filed: December 22, 1994
    Date of Patent: May 27, 1997
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masahiro Tsubokawa, Osamu Aiba, Toshiharu Yasu, Shuichi Yamamoto, Hideo Hirano, Taisei Kohayakawa, Shozo Hase