Patents by Inventor Koji Tsuiki

Koji Tsuiki 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).

  • Engine oil pan and forming method and apparatus
    Patent number: 6626021
    Abstract: An oil pan includes an oil reservoir and a pair of side walls facing the reservoir. A bulge is formed in each side wall. Each bulge defines an oil sub chamber connected to the oil reservoir. The bulges are formed integrally with the side walls by deforming the side walls outward. In other words, the bulges are not fastened to the side wall but are part of it. The oil pan is therefore easily and inexpensively formed by pressing. Further, since there is no joint between each bulge and the side wall, the oil pan has improved strength and durability.
    Type: Grant
    Filed: June 27, 2001
    Date of Patent: September 30, 2003
    Assignee: Pacific Industrial Co., Ltd.
    Inventors: Tsutomu Okuda, Koji Tsuiki, Manabu Hayano
  • Engine oil pan and forming method and apparatus
    Publication number: 20010037788
    Abstract: An oil pan includes an oil reservoir and a pair of side walls facing the reservoir. A bulge is formed in each side wall. Each bulge defines an oil sub chamber connected to the oil reservoir. The bulges are formed integrally with the side walls by deforming the side walls outward. In other words, the bulges are not fastened to the side wall but are part of it. The oil pan is therefore easily and inexpensively formed by pressing. Further, since there is no joint between each bulge and the side wall, the oil pan has improved strength and durability.
    Type: Application
    Filed: June 27, 2001
    Publication date: November 8, 2001
    Applicant: Pacific Industrial Co., Ltd.
    Inventors: Tsutomu Okuda, Koji Tsuiki, Manabu Hayano
  • Engine oil pan and forming method and apparatus
    Patent number: 6273049
    Abstract: An oil pan includes an oil reservoir and a pair of side walls facing the reservoir. A bulge is formed in each side wall. Each bulge defines an oil sub chamber connected to the oil reservoir. The bulges are formed integrally with the side walls by deforming the side walls outward. In other words, the bulges are not fastened to the side wall but are part of it. The oil pan is therefore easily and inexpensively formed by pressing. Further, since there is no joint between each bulge and the side wall, the oil pan has improved strength and durability.
    Type: Grant
    Filed: September 10, 1999
    Date of Patent: August 14, 2001
    Assignee: Pacific Industrial Co., Ltd.
    Inventors: Tsutomu Okuda, Koji Tsuiki, Manabu Hayano