Patents by Inventor Masami Osako
Masami Osako 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).
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Patent number: 7467797Abstract: The lip-type seal of the present invention includes a seal ring made of an elastic material so as to have an annular fitted part that is fitted to a housing and a lip part that extends from the fitted part inwardly in a radial direction in the shape of a substantially conical ring and that is brought into contact with a shaft, and a support ring including an annular joint part joined to the fitted part and an annular supporting part that defines a hole through which the shaft passes, that extends from a side of the joint part to a halfway area of the lip part, and that supports the lip part from inside in a radial direction. The lip part is tapered in cross section from an area from which non-contact with the supporting part starts toward an end thereof.Type: GrantFiled: April 5, 2004Date of Patent: December 23, 2008Assignees: Eagle Industry Co., Ltd., Kabushiki Kaisha Toyota JidoshokkiInventors: Koichiro Oiyama, Yasuhiro Ikeda, Hajime Ichiyasu, Ichiro Miyai, Takeshi Yamada, Masami Osako
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Patent number: 7156014Abstract: A compressor has a swash plate and shoes. Surfaces of the swash plate slides on flat surfaces of the shoes. A sliding film is formed on each of the swash plate surfaces. The sliding films are formed of a polyamide-imide resin that contains at least solid lubricant. The polyamide-amide resin has a glass transition temperature of 270° C., a tensile strength at room temperature of 200 MPa, or more imide groups than amide groups. When a base portion of the swash plate is made of an aluminum-based metal, the sliding films are formed on the base portion with middle layers made of anodized aluminum in between.Type: GrantFiled: June 17, 2004Date of Patent: January 2, 2007Assignee: Kabushiki Kaisha Toyota JidoshokkiInventors: Takahiro Sugioka, Manabu Sugiura, Takahiro Hoshida, Masami Osako, Toshihisa Shimo, Hitotoshi Murase, Takayuki Kato
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Publication number: 20060208428Abstract: The lip-type seal of the present invention is a lip-type seal with which the outer periphery of a rotational shaft (S) supported by a predetermined housing (H) is sealed. This lip-type seal includes a seal ring (20) made of an elastic material so as to have an annular fitted part (21) that is fitted to the housing and a lip part (23) that extends from the fitted part inwardly in a radial direction in the shape of a substantially conical ring and that is brought into contact with the shaft, and a support ring (30) including an annular joint part joined to the fitted part and an annular supporting part (33) that defines a hole (30a) through which the shaft passes, that extends from a side of the joint part to a halfway area of the lip part, and that supports the lip part from the inside in the radial direction. In this lip-type seal, the lip part (23) is tapered in cross section from an area from which noncontact with the supporting part (33) starts toward an end thereof.Type: ApplicationFiled: April 5, 2004Publication date: September 21, 2006Applicant: EAGLE INDUSTRY CO., LTD.Inventors: Koichiro Oiyama, Ysuhiko Ikeda, Hajime Ichiyasu, Ichiro Miyai, Takeshi Yamada, Masami Osako
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Patent number: 6886834Abstract: A shaft sealing assembly seals a rotary shaft of a refrigerant compressor with a first sealing member, which is a lip seal. The first sealing member has a hollow portion. As the pressure in the interior space of the compressor housing increases, an outer wall surrounding the hollow portion is elastically deformed. Accordingly, a lip portion of the first sealing member receives a tension that weakens a force pressing the lip portion against the rotary shaft. Therefore, the sealing assembly improves the durability of the lip portion and maintains a satisfactory property of the lip portion to follow displacement of the rotary shaft at the same time.Type: GrantFiled: November 4, 2003Date of Patent: May 3, 2005Assignee: Kabushiki Kaisha Toyota JidoshokkiInventors: Masami Osako, Takeshi Yamada, Masakazu Murase
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Publication number: 20040261611Abstract: A compressor has a swash plate and shoes. Surfaces of the swash plate slides on flat surfaces of the shoes. A sliding film is formed on each of the swash plate surfaces. The sliding films are formed of a polyamide-imide resin that contains at least solid lubricant. The polyamide-amide resin has a glass transition temperature of 270° C., a tensile strength at room temperature of 200 MPa, or more imide groups than amide groups. When a base portion of the swash plate is made of an aluminum-based metal, the sliding films are formed on the base portion with middle layers made of anodized aluminum in between.Type: ApplicationFiled: June 17, 2004Publication date: December 30, 2004Inventors: Takahiro Sugioka, Manabu Sugiura, Takahiro Hoshida, Masami Osako, Toshihisa Shimo, Hitotoshi Murase
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Publication number: 20040259741Abstract: A coating composition for use in sliding members contains a polyamideimide resin and a solid lubricant and is prepared by mixing these ingredients. The polyamideimide resin is a substance having a glass transition temperature of 270° C. or above or a substance having a tensile strength of 200 MPa or more at room temperature. The sliding film made of the coating composition for use in sliding members is provided with a satisfactory sliding property.Type: ApplicationFiled: June 17, 2004Publication date: December 23, 2004Inventors: Takahiro Sugioka, Manabu Sugiura, Takahiro Hoshida, Masami Osako, Toshihisa Shimo, Hitotoshi Murase, Tetsuji Yamaguchi, Jiro Yamashita
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Publication number: 20040130101Abstract: A shaft sealing assembly seals a rotary shaft of a refrigerant compressor with a first sealing member, which is a lip seal. The first sealing member has a hollow portion. As the pressure in the interior space of the compressor housing increases, an outer wall surrounding the hollow portion is elastically deformed. Accordingly, a lip portion of the first sealing member receives a tension that weakens a force pressing the lip portion against the rotary shaft. Therefore, the sealing assembly improves the durability of the lip portion and maintains a satisfactory property of the lip portion to follow displacement of the rotary shaft at the same time.Type: ApplicationFiled: November 4, 2003Publication date: July 8, 2004Inventors: Masami Osako, Takeshi Yamada, Masakazu Murase
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Publication number: 20030138332Abstract: A sealing material is used in a seal member for a compressor that compresses refrigerant including carbon dioxide gas. The sealing material has a polymer mixture. The polymer mixture includes an acrylonitrile-butadiene rubber series polymer containing approximately 45% or more by weight of bound acrylonitrile.Type: ApplicationFiled: December 13, 2002Publication date: July 24, 2003Inventors: Masami Osako, Takeshi Yamada, Takayuki Kato
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Publication number: 20030075041Abstract: A piston is used in a fluid machine. The fluid machine has a drive shaft and a cam plate operatively connected to the drive shaft. The drive shaft integrally rotates with the cam plate in a housing. The piston has a head portion, a neck portion, a receiving wall and a guide wall. The head portion is accommodated in a cylinder bore in the housing. The neck portion is operatively connected to the cam plate. The receiving wall integrally connects the head portion and the neck portion on the drive shaft side. The receiving wall is formed substantially on a preceding side in a rotating direction of the cam plate. The guide wall integrally connects the head portion and the neck portion on an opposite side of the drive shaft side. The guide wall is formed substantially on a following side in the rotating direction of the cam plate.Type: ApplicationFiled: October 16, 2002Publication date: April 24, 2003Inventors: Fuminobu Enokijima, Takayuki Kato, Seiji Katayama, Masami Osako