Patents by Inventor Yosei Kodama
Yosei Kodama 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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Publication number: 20060255232Abstract: A suspension support capable of reducing remarkably noise ascribable to vibration transmitted from tires to the cabin inside, in particular, noise due to tire cavity resonance is provided, which comprises an inner attachment member to be attached to an upper end portion of a rod of a shock absorber, an outer attachment member surrounding the inner attachment member and to be attached to a car body side, and a vibration-isolating base of rubber-like elastomer interposed between these members. To that end, an actuator as vibration exciting means driven by means of electromagnets is provided and connected to the upper end portion of the rod so as to excite the rod in its axial direction.Type: ApplicationFiled: June 22, 2005Publication date: November 16, 2006Applicant: Toyo Tire & Rubber Co., Ltd.Inventors: Yoshinori Hishinuma, Yosei Kodama
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Patent number: 6808167Abstract: A vibration isolator having a stopper function being able to prevent accumulation of water penetrating onto the top surface of a flange, and allowing the dies axially to be parted, includes a cylindrical body fitting connected to an upper side attachment fitting having a flange for the stopper via a vibration isolating substrate. A cylindrical stopper fitting extending outside the vibration isolating substrate up to above the flange is fixed to the body fitting, being folded inside so that the upper extremity portion of the stopper fitting lies above the flange. A stopper rubber is provided on the top surface and outer circumferential portion of the flange. The flange abuts the stopper fitting through the stopper rubber when the upper side attachment fitting moves substantially. A notch groove for drainage continuous from the top surface to the outer circumferential portion is provided at at least one place circumferentially on the stopper rubber.Type: GrantFiled: November 9, 2001Date of Patent: October 26, 2004Assignee: Toyo Tire & Rubber Co., Ltd.Inventor: Yosei Kodama
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Patent number: 6648312Abstract: In a hydraulic antivibration device for use in supporting a vibratory body like an automobile engine, the invention enables it to enhance the dimensional precision of an orifice for shake vibration, to decrease the dispersion in characteristics, and to reduce the dynamic spring rate in a high frequency region thereby reducing noise such as muffled sound.Type: GrantFiled: December 3, 2001Date of Patent: November 18, 2003Assignee: Toyo Tire & Rubber Co., Ltd.Inventors: Yosei Kodama, Yukio Takashima
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Patent number: 6634628Abstract: A liquid-in vibration isolator has an orifice hole mainly for audible sound provided on a first sub-liquid chamber and connected to a second sub-liquid chamber. When the first sub-liquid chamber is reduced to lower pressure and contracted due to large downward displacement caused by vibration and the diaphragm of the vibration isolator approaches the partition portion of the vibration isolator, the center plate portion of the orifice member is a convex with the center portion projected to the first sub-liquid chamber side, and the orifice hole is provided at a low portion of the center plate portion disposed eccentrically with respect to the isolator axis. Therefore, even being in contact with the center plate portion, the diaphragm hardly comes into contact with the orifice hole, or if it comes into contact with the orifice hole, it does not cover the orifice hole so as to interfere with proper function of the orifice hole.Type: GrantFiled: March 13, 2002Date of Patent: October 21, 2003Assignee: Toyo Tire & Rubber Co., Ltd.Inventors: Yukio Takashima, Yosei Kodama
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Patent number: 6592110Abstract: A switchable liquid-filled vibration absorbing mount has a stopper device interposed between a first diaphragm and a bottom portion for regulating downward movement of pushing member when a vacuum is introduced into a switching chamber, so that a protrusion of a valve member does not come out of an inner orifice when a vacuum is applied to the switching chamber to move the first diaphragm to a first position opening the orifice.Type: GrantFiled: December 21, 2000Date of Patent: July 15, 2003Assignee: Toyo Tire & Rubber Co., Ltd.Inventors: Yukio Takashima, Masashi Takaoka, Yosei Kodama, Nobuya Yoshida, Kazumasa Kuze
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Patent number: 6585242Abstract: This invention provides a switching type liquid-in vibration isolating device capable of opening/closing an orifice by changing over between the atmospheric and negative pressure in a switching chamber corresponding to shake and idle vibration, respectively.Type: GrantFiled: February 15, 2002Date of Patent: July 1, 2003Assignee: Toyo Tire & Rubber Co., Ltd.Inventors: Yosei Kodama, Yukio Takashima, Nobuya Yoshida, Takashi Miyake
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Publication number: 20030071401Abstract: The present invention provides a vibration isolator having a stopper function in the up-and-down direction and the fore-and-aft and lateral direction square to the axis, being able to prevent water intruded into the top surface of a flange from being accumulated, and allowing the dies axially to be parted.Type: ApplicationFiled: November 9, 2001Publication date: April 17, 2003Inventor: Yosei Kodama
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Patent number: 6523814Abstract: A liquid-in vibration-isolating device, used to support a vibration generating source such as a vehicle engine for the purpose of vibration isolation, prevents hitting sound or adsorption of a diaphragm due to abutment against a partition member and proper functioning of the device is maintained, without increasing the volume of sub-liquid chamber on the diaphragm side. The device includes a cylindrical body fitting and a boss fitting connected via a vibration isolating substrate. A diaphragm is provided on an opening portion at the upper extremity, being partitioned into a main liquid chamber on the vibration isolating substrate side and a sub-liquid chamber on the diaphragm side by means of a partition member. Both liquid chambers are connected through an orifice of the outer circumferential portion. Multiple convex portions are provided for restraining the diaphragm from abutting against the partition member.Type: GrantFiled: February 12, 2002Date of Patent: February 25, 2003Assignee: Toyo Tire & Rubber Co., LtdInventors: Yosei Kodama, Yukio Takashima
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Publication number: 20030011116Abstract: This invention provides a switching type liquid-in vibration isolating device capable of opening/closing an orifice by changing over between the atmospheric and negative pressure in a switching chamber corresponding to shake and idle vibration, respectively.Type: ApplicationFiled: February 15, 2002Publication date: January 16, 2003Inventors: Yosei Kodama, Yukio Takashima, Nobuya Yoshida, Takashi Miyake
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Publication number: 20020195757Abstract: This invention provides a liquid-in vibration-isolating device used to support a vibration generating source such as vehicle engine for the purpose of vibration isolation, wherein hitting sound or adsorption of a diaphragm due to abutment against a partition member can be avoided, and functions can also be maintained properly, without increasing the volume of sub-liquid chamber on the diaphragm side.Type: ApplicationFiled: February 12, 2002Publication date: December 26, 2002Inventors: Yosei Kodama, Yukio Takashima
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Publication number: 20020158391Abstract: In a hydraulic antivibration device for use in supporting a vibratory body like an automobile engine, the invention enables it to enhance the dimensional precision of an orifice for shake vibration, to decrease the dispersion in characteristics, and to reduce the dynamic spring rate in a high frequency region thereby reducing noise such as muffled sound.Type: ApplicationFiled: December 3, 2001Publication date: October 31, 2002Inventors: Yosei Kodama, Yukio Takashima
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Publication number: 20020135114Abstract: The present invention provides a liquid-in vibration isolating device, wherein a cylindrical body fitting (1) and an attachment fitting (2) are coupled through a vibration isolating substrate (3), an inner chamber surrounded by a diaphragm (4) disposed at the upper end portion and the vibration isolating substrate (3) is partitioned into a main liquid chamber (6) and a first sub-liquid chamber (7) by a partition portion (10), a first orifice (8) is formed on the outer circumferential portion of the partition member (10) to interconnect between the main liquid chamber (6) and the first sub-liquid chamber (7), the partition member (10) is configured by a partition plate member (11) having an elastic film (12) and an orifice member (13), a hollow space between a center plate portion (13b) of the orifice member and the elastic film (12) is formed as a second sub-liquid chamber(15), the center plate portion (13b) of the orifice member (13) is in the form of a convex faced toward the first sub-liquid chamber (7), aType: ApplicationFiled: March 13, 2002Publication date: September 26, 2002Inventors: Yukio Takashima, Yosei Kodama
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Publication number: 20010010413Abstract: A switchable liquid-filled vibration absorbing mount which is caused to cope with the shaking vibrations and the idle vibrations by opening/closing orifices and which is enabled to hold the stable characteristics for a long time without being troubled by the slackness of the closed state even after the opening/closing actions are repeated. For this vibration absorbing mount, a first mounting fixture (1) and a second mounting fixture (2) are jointed by a vibration absorbing base (3). In this internal space, there are arranged a partition member (4), a first diaphragm (5) and a second diaphragm (6). A main liquid chamber (7) and an auxiliary liquid chamber (8) are caused to communicate by two inner and outer orifices (14) and (13). A balance chamber (9) is defined between the first and second two diaphragms (5) and (6), and a switching chamber (10), into which the atmospheric pressure and a vacuum can be introduced, is defined between the second diaphragm (6) and the second mounting fixture (2).Type: ApplicationFiled: December 21, 2000Publication date: August 2, 2001Inventors: Yukio Takashima, Masashi Takaoka, Yosei Kodama, Nobuya Yoshida, Kazumasa Kuze
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Patent number: 5988611Abstract: There is provided a liquid enclosing type vibration isolating apparatus which reduces a number of members to be aligned and which simplifies the assembling procedure in liquid, so as to reduce assembling steps and production cost. A cylindrical rubber body has a reinforcing intermediate cylinder, a concave groove and a through hole to form an orifice passage. The cylindrical rubber body is formed integrated with a diaphragm at a lower end of the cylindrical rubber body. A partitioning member has, on its peripheral part, an orifice passage concave portion. A first assembling step is conducted in air wherein a partitioning member is fitted into the cylindrical rubber body, so as to form an air chamber between the diaphragm and the partitioning member, while aligning the through hole with the orifice passage concave portion.Type: GrantFiled: July 22, 1997Date of Patent: November 23, 1999Assignee: Toyo Tire & Ruber Co., Ltd.Inventors: Yukio Takashima, Yosei Kodama
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Patent number: 5979884Abstract: A vibration isolating apparatus mainly used for supporting an engine for a compact vessel which is structured such as to securely perform a stopper operation and to widely improve a durability at a time when a large load is given, without changing a fastened position, a height and a mounting operability.Type: GrantFiled: February 18, 1998Date of Patent: November 9, 1999Assignee: Toyo Tire & Rubber Co., Ltd.Inventors: Teruo Sato, Ikuo Takeuchi, Masashi Takaoka, Yukio Takashima, Yosei Kodama