Patents by Inventor Imai Takayuki

Imai Takayuki 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).

  • Installation structure of lip type seal
    Patent number: 6543786
    Abstract: A lip type seal (3A) has an annular casing (31), a plurality of seal lips (32, 34) and a rear surface support ring (35) arranged at the rear side. The casing (31) is installed to an inner circumferential surface of a seal installation part (1a) of a shaft hole housing (1) of an equipment through a main gasket (36) made of rubber state elastic material. An inner circumferential part of the seal lips (32, 34) is closely contacted with an outer circumferential surface of a rotary shaft (2). A sub-gasket (41) made of a material having a CO2 transmission coefficient being smaller than that of rubber material is interposed between the rear surface support ring (35) and the shaft hole housing (1).
    Type: Grant
    Filed: March 9, 2001
    Date of Patent: April 8, 2003
    Assignees: Eagle Industry Co., Ltd., Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Shiro Osumi, Naoki Hayakawa, Takanobu Matsumoto, Yamada Takeshi, Imai Takayuki
  • Installation structure of lip type seal
    Publication number: 20020003338
    Abstract: A lip type seal (3A) has an annular casing (31), a plurality of seal lips (32, 34) and a rear surface support ring (35) arranged at the rear side. The casing (31) is installed to an inner circumferential surface of a seal installation part (1a) of a shaft hole housing (1) of an equipment through a main gasket (36) made of rubber state elastic material. An inner circumferential part of the seal lips (32, 34) is closely contacted with an outer circumferential surface of a rotary shaft (2). A sub-gasket (41) made of a material having a CO2 transmission coefficient being smaller than that of rubber material is interposed between the rear surface support ring (35) and the shaft hole housing (1).
    Type: Application
    Filed: March 9, 2001
    Publication date: January 10, 2002
    Inventors: Shiro Osumi, Naoki Hayakawa, Takanobu Matsumoto, Yamada Takeshi, Imai Takayuki