Patents by Inventor Hideaki Harada
Hideaki Harada 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: 7004224Abstract: A diecasting machine capable of realizing highly precise injection of molten metal at high-speed without using an accumulator is provided, which includes: an injection cylinder for loading molten metal into a mold cavity by injection; a single two-way hydraulic pump driven by a driving motor for supplying hydraulic fluid to the injection cylinder in two directions; a hydraulic circuit for driving the injection cylinder by controlling supply of hydraulic fluid from the two-way hydraulic pump to the injection cylinder and discharge of hydraulic fluid from the injection cylinder which proceeds in accordance with movement of a piston of the injection cylinder; and a hydraulic controller for controlling rotational speed of the driving motor associated with the two-way hydraulic pump in injection/loading the molten metal and controlling torque of the driving motor in dwelling.Type: GrantFiled: November 13, 2003Date of Patent: February 28, 2006Assignees: Toyo Machinery and Metal Co., Ltd., Denso CorporationInventors: Naohiko Tsuzuki, Hideaki Harada, Hiromi Takagi, Hitoshi Oosawa
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Publication number: 20040099400Abstract: A diecasting machine capable of realizing highly precise injection of molten metal at high-speed without using an accumulator is provided, which includes: an injection cylinder for loading molten metal into a mold cavity by injection; a single two-way hydraulic pump driven by a driving motor for supplying hydraulic fluid to the injection cylinder in two directions; a hydraulic circuit for driving the injection cylinder by controlling supply of hydraulic fluid from the two-way hydraulic pump to the injection cylinder and discharge of hydraulic fluid from the injection cylinder which proceeds in accordance with movement of a piston of the injection cylinder; and a hydraulic controller for controlling rotational speed of the driving motor associated with the two-way hydraulic pump in injection/loading the molten metal and controlling torque of the driving motor in dwelling.Type: ApplicationFiled: November 13, 2003Publication date: May 27, 2004Applicants: Toyo Machinery & Metal Co., Ltd., Denso CorporationInventors: Naohiko Tsuzuki, Hideaki Harada, Hiromi Takagi, Hitoshi Oosawa
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Publication number: 20040099401Abstract: A direct-acting type diecasting machine having an inexpensive and simplified hydraulic circuit is provided, which includes: a mold clamping cylinder for clamping and opening/closing a mold in a direct-acting manner; a single two-way hydraulic pump driven by a driving motor for supplying hydraulic fluid to the mold clamping cylinder in two directions; a hydraulic circuit for driving the mold clamping cylinder by controlling supply of hydraulic fluid from the two-way hydraulic pump to the mold clamping cylinder and discharge of hydraulic fluid from the mold clamping cylinder which proceeds in accordance with movement of a piston of the mold clamping cylinder; and a hydraulic controller for controlling rotational speed of the driving motor associated with the two-way hydraulic pump in opening/closing the mold at high speed and controlling torque of the driving motor in clamping the mold.Type: ApplicationFiled: November 13, 2003Publication date: May 27, 2004Applicants: Toyo Machinery & Metal Co., Ltd., Denso CorporationInventors: Naohiko Tsuzuki, Hideaki Harada, Hiromi Takagi, Hitoshi Oosawa
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Publication number: 20020046677Abstract: A seismic isolation system is provided with a swing bearing ring consisting of an upper ring and a lower ring, which are rotatable relatively, between a crane body and a traveling means. A lower vertical shaft of a block pivotally supported on saddles of the crane body is supported by a swing bearing provided at an eccentric position on the upper ring. An automatic restoring mechanism is provided which restores the swing of a horizontal lever, whose proximal end is installed to the upper ring of the swing bearing ring, around the centerline C2.Type: ApplicationFiled: December 23, 1999Publication date: April 25, 2002Applicant: Mitsubishi Heavy Industries, Ltd.Inventors: Yoshiaki OKUBO, Hiroshi Ikeda, Hideaki Harada
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Patent number: 6367390Abstract: A seismic isolation system is provided with a swing bearing ring consisting of an upper ring and a lower ring, which are rotatable relatively, between a crane body and a traveling means. A lower vertical shaft of a block pivotally supported on saddles of the crane body is supported by a swing bearing provided at an eccentric position on the upper ring. An automatic restoring mechanism is provided which restores the swing of a horizontal lever, whose proximal end is installed to the upper ring of the swing bearing ring, around the centerline C2.Type: GrantFiled: December 23, 1999Date of Patent: April 9, 2002Assignee: Mitsubishi Heavy Industries, Inc.Inventors: Yoshiaki Okubo, Hiroshi Ikeda, Hideaki Harada
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Patent number: 5915676Abstract: The present invention provides a lever-type frictional resistance force variable system comprising an arm whose upper end is rotatably supported by an upper beam; a supporting member which is fixed to a lower beam to rotatably support the intermediate portion of the arm; a braking device having frictional resistance plates connected to the lower end side of the arm, frictional pads provided between the frictional resistance plates, a pressing pad, and a screw rod; a turning lever connected to the screw rod; a ball screw threadedly engaging with the turning lever; a servomotor for rotating the ball screw; a displacement sensor for detecting a displacement of a frame; and a control unit for determining a braking force to be generated by the braking device based on the detected value of the displacement sensor and outputting a control signal according to the determined braking force.Type: GrantFiled: February 6, 1997Date of Patent: June 29, 1999Assignee: Mitsubishi Jukogyo Kabushiki KaishaInventors: Hisanori Abiru, Hideaki Harada, Jun Hirai, Kenji Imada, Souhei Tateyama
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Patent number: 5707310Abstract: An internal planetary gear device having an input shaft, an eccentric body rotating with the rotation of the input shaft, an external gear eccentrically rotatably mounted on the eccentric body through a bearing, an internal gear internally meshing with the external gear, and an output shaft connected to the external gear through a device for taking up only components of rotation of the external gear, wherein, each component is manufactured of resin, and one of the internal teeth of the internal gear and the external teeth of the external gear is formed into a tooth profile including an inner envelope configuration of curtate epitrochoid theoretical curve C, while the other, into a convex circular tooth profile.Type: GrantFiled: March 6, 1995Date of Patent: January 13, 1998Assignee: Sumitomo Heavy Industries, Ltd.Inventors: Yuji Maeguchi, Hideaki Harada
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Patent number: 5272847Abstract: A long period pendulum damping equipment having right and left pair of longer rods, right and left pair of shorter rods and a tie beam connecting these longer rods and shorter rods one another, in which a tilt angle interlocking means of both rods installed at right and left end portions of the tie beam, respectively, and keeping the tilt angle in one direction of the longer rod with respect to a vertical line always equal to the tilt angle in another direction of the shorter rod or certain ratio times thereof is provided, and a long period is provided and an installation space is made small while making the overall height low by pivoting a weight to either one of the longer or shorter rod.Type: GrantFiled: July 12, 1991Date of Patent: December 28, 1993Assignee: Mitsubishi Jukogyo Kabushiki KaishaInventors: Hisanori Abiru, Hideaki Harada, Kazumi Tamura, Manabu Fujishiro, Jun Hirai, Yasuo Ogi
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Patent number: 5168967Abstract: Disclosed is a dynamic damper which is to absorb building vibrations in any horizontal directions, not restricted to one direction. For example, it comprises an oscillating body which is held to move horizontally, a plurality of ball screws which are arranged perpendicularly to each other with a height difference among them and which have a nut portion on the side of the oscillating body and a screw shaft engaging with said nut portion, and motors which reciprocate the oscillating body according to the period of vibration of the building by turning the ball screws.Type: GrantFiled: October 1, 1990Date of Patent: December 8, 1992Assignee: Mitsubishi Jukogyo Kabushiki KaishaInventors: Hisanori Abiru, Hideaki Harada, Kazumi Tamura, Manabu Fujishiro, Jun Hirai
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Patent number: 5161809Abstract: A metal gasket includes plural functional layers formed with embossments along peripheral edges of cylinder openings thereof and a backup plate not formed with any embossment and sandwiched between the functional layers. At least one edge plate is provided which is spaced radially within and is coplanar with peripheral edges of cylinder openings of the backup plate. The edge plate is different in thickness from, generally thinner than, the backup plate. Grommets are provided to fasten together the edge plate and portions of the functional layers overlapping the edge plate. With this arrangement, by selecting thicknesses of the edge plate and the backup plate so as to be different between them by a requisite value, surface pressure at peripheral edges of cylinder openings of the metal gasket can be set a desired value. Therefore, this metal gasket is superior in sealing performance and uniformity.Type: GrantFiled: June 25, 1991Date of Patent: November 10, 1992Assignee: Nippon Leakless Industry Co., Ltd.Inventors: Yoshitaka Matsushita, Yuji Takahashi, Hideaki Harada