Patents Assigned to Ohtsuka Co., Ltd.
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Patent number: 7415765Abstract: An object of the present invention is to provide a flange coupling in which the height of a horizontal portion of an L-shaped pipe is made as small as possible. The present invention provides a flange coupling having a flange formed with an attaching bolt hole and a pipe connection hole and an L-shaped pipe installed in the pipe connection hole, wherein the L-shaped pipe is made of aluminum or aluminum alloy, and a horizontal portion of the L-shaped pipe is molded so that a lower face thereof is at the same level as or at the level close to a plane including the upper surface of the flange.Type: GrantFiled: March 27, 2002Date of Patent: August 26, 2008Assignee: Ohtsuka Co., Ltd.Inventor: Kouichi Ozawa
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Publication number: 20050167977Abstract: An object of the present invention is to provide a flange coupling in which the height of a horizontal portion of an L-shaped pipe is made as small as possible. The present invention provides a flange coupling having a flange formed with an attaching bolt hole and a pipe connection hole and an L-shaped pipe installed in the pipe connection hole, wherein the L-shaped pipe is made of aluminum or aluminum alloy, and a horizontal portion of the L-shaped pipe is molded so that a lower face thereof is at the same level as or at the level close to a plane including the upper surface of the flange.Type: ApplicationFiled: March 27, 2002Publication date: August 4, 2005Applicant: OHTSUKA CO., LTD.Inventor: Kouichi Ozawa
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Patent number: 6619328Abstract: The present invention provides a tubular member construction capable of preventing the end portion of a flexible pipe formed of a band member from coming loose without costing. The flexible pipe is formed by winding a metallic tubular member in a spiral shape in an overlapped manner, and a plurality of wavy corrugations are formed on the peripheral wall surface of the flexible pipe continuously in the axial direction. In order to prevent a band member located in an end portion of the flexible pipe from coming loose, collapsed portions are formed on corrugations located in the end portions of the tubular member.Type: GrantFiled: February 28, 2002Date of Patent: September 16, 2003Assignee: Ohtsuka Co., Ltd.Inventor: Kunio Otsuka
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Patent number: 6123616Abstract: Pipe-like air duct is formed of hard aluminum foil. Concaves and convexes give flexibility to the air duct. For the air duct, kraft paper is wound on both surfaces of the aluminum foil. This air duct is disposed between an outer panel and an inner panel of vehicle body along the panels, laid to the rear seat of the vehicle, and connected to a blow-off port for the rear seat. In a collision of the vehicle, the air duct is subjected to plastic deformation, by which the shock energy caused by an external force is absorbed.Type: GrantFiled: October 30, 1998Date of Patent: September 26, 2000Assignee: Ohtsuka Co., Ltd.Inventor: Kunio Otsuka
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Patent number: 6092555Abstract: A body for absorbing impact energy is designed as a flexible pipe and is characterized in that the walls of the pipe are made of several layers and comprise at least one metal layer and at least one paper or plastic layer. The cross-section of the absorbing body is designed in such a way that at least one section of its wall is substantially straight and extends substantially parallel to the direction from which an impact is expected.Type: GrantFiled: January 13, 1999Date of Patent: July 25, 2000Assignee: Ohtsuka Co., Ltd.Inventor: Kunio Otsuka
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Patent number: 5680886Abstract: An object of the present invention is to efficiently absorb the energy of an external force applied to a vehicle body without an appreciable increase in weight of an automobile. To achieve the object, the present invention provides an impact energy absorber made of a composite in which kraft paper is placed on the outside and inside of a metal sheet such as iron foil or hard aluminum foil. The impact energy absorber is a flexible pipe having a substantially quadrangular cross section and provided with spiral-shaped concaves and convexes on the outside and inside of hard aluminum foil. The energy absorber is bonded to the room-side surface of an outer panel of the vehicle body using an adhesive. When an external force is applied to the energy absorber, the energy absorber can absorb the energy of the external force by being deformed plastically.Type: GrantFiled: August 27, 1996Date of Patent: October 28, 1997Assignee: Ohtsuka Co., Ltd.Inventor: Kunio Ohtsuka