Patents by Inventor Yoshiaki Hirata
Yoshiaki Hirata 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: 7624638Abstract: First and second detection frames are supported by a substrate to be rotatable about first and second torsion axes. A first link beam is connected to the first detection frame on an axis located at a position moved from a position of the first torsion axis in a first direction crossing the first torsion axis and directed to one end side of the first detection frame. A second link beam is connected to the second detection frame on an axis located at a position shifted from a position of the second torsion axis in a second direction opposite to the first direction. An inertia mass body is displaceable in a thickness direction of the substrate by being linked with the first and second detection frames by the first and second link beams, respectively. This constitution makes it possible to obtain a highly precise acceleration sensor hardly influenced by disturbances.Type: GrantFiled: November 1, 2007Date of Patent: December 1, 2009Assignee: Mitsubishi Electric CorporationInventors: Nobuaki Konno, Yoshiaki Hirata
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Publication number: 20080110260Abstract: First and second detection frames are supported by a substrate to be rotatable about first and second torsion axes. A first link beam is connected to the first detection frame on an axis located at a position moved from a position of the first torsion axis in a first direction crossing the first torsion axis and directed to one end side of the first detection frame. A second link beam is connected to the second detection frame on an axis located at a position shifted from a position of the second torsion axis in a second direction opposite to the first direction. An inertia mass body is displaceable in a thickness direction of the substrate by being linked with the first and second detection frames by the first and second link beams, respectively. This constitution makes it possible to obtain a highly precise acceleration sensor hardly influenced by disturbances.Type: ApplicationFiled: November 1, 2007Publication date: May 15, 2008Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Nobuaki KONNO, Yoshiaki Hirata
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Patent number: 7357170Abstract: A hollow-cylindrical portion (26) inserted in a hollow-cylindrical portion (16) of one rim section (12) is provided on the other rim section (13). To form a split rim (11), part (head portion) of the inner hollow-cylindrical portion (26) overlaid on the outer hollow-cylindrical portion (16) is radially outwardly expanded by being elastically deformed by a tapered surface (39) of a piston (38) such that the inner and outer hollow-cylindrical portions (16, 26) are in close contact with each other. As a result, relative positions of the rim sections (12, 13) are strictly defined, and this enables high assembling accuracy, particularly coaxiality with a high level, to be achieved. A fine fitted to the split rim (11) can be inspected with high accuracy.Type: GrantFiled: April 7, 2004Date of Patent: April 15, 2008Assignee: Bridgestone CorporationInventors: Yoshiaki Hirata, Akio Oobayashi, Keigo Kikuchi
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Patent number: 7320352Abstract: A split rim for pneumatic tire includes a disk part having a seat portion allowing a corresponding tire bead part to be seated at the radial outer end. First and second pieces are connected to the disk part and have cylindrical parts coaxial with the disk parts. The cylindrical part of the second piece can be inserted into the cylindrical part of the first piece. The cylindrical parts of the first and second pieces overlap with each other in the inserted state and are connected to each other by a fastening mechanism. The fastening mechanism includes a group of claws formed on the inner circumference of the first piece cylindrical part and a group of claws formed on the outer circumference of the second piece cylindrical part.Type: GrantFiled: February 18, 2003Date of Patent: January 22, 2008Assignee: Bridgestone CorporationInventors: Yoshiaki Hirata, Keigo Kikuchi, Akio Oobayashi
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Patent number: 7249496Abstract: An uniformity inspection line 1 comprises a decision-only line 2 having first UF machines 2M exclusive for the measurement of the uniformity of a tire 12 sorted and distributed on an automatic sorting line 21 and a correction-only line 3 having second UF machines 3M for the correction and re-measurement of the uniformity characteristics of a tire having uniformity characteristics outside specific values measured on the above decision-only line 2. Since the measurement of uniformity and the correction and re-measurement of uniformity characteristics are performed in different systems, uniformity inspection can be carried out efficiently even when the number of tires whose uniformity characteristics are to be corrected is varied.Type: GrantFiled: October 8, 2003Date of Patent: July 31, 2007Assignee: Kabushiki Kaisha BridgestoneInventors: Hiroki Kunitake, Takahiro Gotou, Yoshihiro Murota, Yoshiaki Hirata
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Publication number: 20060090557Abstract: An uniformity inspection line 1 comprises a decision-only line 2 having first UF machines 2M exclusive for the measurement of the uniformity of a tire 12 sorted and distributed on an automatic sorting line 21 and a correction-only line 3 having second UF machines 3M for the correction and re-measurement of the uniformity characteristics of a tire having uniformity characteristics outside specific values measured on the above decision-only line 2. Since the measurement of uniformity and the correction and re-measurement of uniformity characteristics are performed in different systems, uniformity inspection can be carried out efficiently even when the number of tires whose uniformity characteristics are to be corrected is varied.Type: ApplicationFiled: October 8, 2003Publication date: May 4, 2006Inventors: Hiroki Kunitake, Takahiro Gotou, Yoshihiro Murota, Yoshiaki Hirata
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Patent number: 6955086Abstract: An acceleration sensor includes first and second fixed electrodes on a substrate, and a movable electrode located above the first and second fixed electrodes, with respect to the substrate, and facing them. The movable electrode is elastically supported on the substrate by a first elastic supporting body and is movable. A mass, which is elastically supported on the substrate by a second elastic supporting body, moves in response to an acceleration in a direction perpendicular to the substrate. A linking portion links the movable electrode and the mass at a position spaced from an axis of movement of the movable electrode by a distance. Acceleration is measured based on changes in a first capacitance between the first fixed electrode and the movable electrode and a second capacitance between the second fixed electrode and the movable electrode. Thus, a highly impact resistant and highly reliable acceleration sensor is obtained.Type: GrantFiled: December 19, 2003Date of Patent: October 18, 2005Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Eiji Yoshikawa, Masahiro Tsugai, Nobuaki Konno, Yoshiaki Hirata
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Publication number: 20050173039Abstract: A split rim for pneumatic tire includes a disk part having a seat portion allowing a tire corresponding bead part to be seated at the radial outer end thereof, and first and second pieces connected to the disk part and having cylindrical parts coaxial with the disk parts. The cylindrical part of the second piece can be inserted into the cylindrical part of the first piece, and the cylindrical parts of the first and second pieces overlapped with each other in the inserted state are connected to each other at an overlapped region through a connection means.Type: ApplicationFiled: February 18, 2003Publication date: August 11, 2005Applicant: Bridgestone CorporationInventors: Yoshiaki Hirata, Keigo Kikuchi, Akio Oobayashi
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Publication number: 20040079154Abstract: An acceleration sensor includes first and second fixed electrodes on a substrate, and a movable electrode located above the first and second fixed electrodes facing them. The movable electrode is elastically supported on the substrate by a first elastic supporting body and is movable. A mass, which is elastically supported on the substrate by a second elastically supporting body moves in response to an acceleration in a direction perpendicular to the substrate. A linking portion links the movable electrode and the mass at a position spaced from an axis of movement of the movable electrode by a distance. Acceleration is measured based on changes in a first capacitance between the first fixed electrode and the movable electrode and a second capacitance between the second fixed electrode and the movable electrode. Thus, a high impact resistant and highly reliable acceleration sensor is obtained.Type: ApplicationFiled: December 19, 2003Publication date: April 29, 2004Applicant: Mitsubishi Denki Kabushiki KaishaInventors: Eiji Yoshikawa, Masahiro Tsugai, Nobuaki Konno, Yoshiaki Hirata
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Patent number: 6615649Abstract: The present invention discloses a tire chuck apparatus for holding a tire having a tire bead. The apparatus comprises: a gripping mechanism with at least two gripping members movable in tire radial direction from a retracted position to an extended position for pressing against the inner side of the bead portion of the tire, thereby holding the tire; gripping rollers as the gripping members adapted to be rotatable around an axis substantially parallel to a central axis of the tire; and a rotation drive mechanism for rotating the tire around the central axis of the tire. According to this apparatus, even if the center of the tire and the center of the chuck are out of alignment with each other, by rotating the gripping rollers so as to rotate the tire, the tire is shifted so that the center thereof is aligned with the center of the chuck apparatus, thus reducing mispositioning.Type: GrantFiled: June 8, 2000Date of Patent: September 9, 2003Assignee: Bridgestone CorporationInventors: Takao Kokubu, Tomoyuki Kaneko, Norimichi Uchida, Yoshiaki Hirata
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Patent number: 6201284Abstract: A movable electrode structure is formed in a single sensor element, and this movable electrode structure can be displaced along two axes within a plane, and one axis outside the plane. A detecting fixed electrode is provided via a constant space with each of these detecting axes, and a change in capacitances between the movable electrodes and the fixed electrodes is detected. As a result, the acceleration components of the two axes, or the three axes are detected. The dynamic characteristic of the sensor is controlled based on the mass of the variable electrode, the structure and length of the beam for supporting the movable electrode, and also the ratio of the length to the section of this beam.Type: GrantFiled: February 18, 1998Date of Patent: March 13, 2001Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Yoshiaki Hirata, Masahiro Tsugai, Nobuaki Konno
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Patent number: 6125700Abstract: A vibrating type angular velocity sensor is comprised of: a driving vibrator element 8 supported by a first beam 9 fixed by an anchor portion 3 on a substrate, and driven by a driving comb electrode 12 along an X-axial direction parallel to the substrate; a detecting vibrator element 10 supported by a second beam 11 on the driving vibrator element and being vibratable along a Y-axial direction; and detection electrodes 14 and 15 of an electric capacitance provided with separated from the detecting vibrator element, and the detection electrodes along the X-axial direction, whereby an angular velocity while setting a Z-axial direction perpendicular to the substrate as an axis is detected. Furthermore, the driving vibrator element is fixed on the substrate by way of two sets of the anchor portions arranged at positions symmetrical to each other with respect to the detecting vibrator element.Type: GrantFiled: December 30, 1997Date of Patent: October 3, 2000Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Masahiro Tsugai, Nobuaki Konno, Yoshiaki Hirata
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Patent number: 4695235Abstract: A coil section for being excited by a primary ac signal and producing a secondary output signal is provided on the open end side of a bag-cylinder main body. A material consisting of such substance and having such configuration that bring about reluctance change of a magnetic circuit passing through the coil section in accordance with displacement of a piston rod of the bag-cylinder is provided in a predetermined pattern about the piston rod. In a detection circuit, position detection data representing the position of the piston rod is obtained in response to the secondary output signal from the coil section. In a position establishing circuit, stop position data representing a desired position at which the piston rod should be stopped is established depending upon the diameter of a tire to be vulcanized.Type: GrantFiled: October 1, 1986Date of Patent: September 22, 1987Assignees: Kabushiki Kaisha SG, Bridgestone CorporationInventors: Wataru Ichikawa, Yuji Matsuki, Yoshiaki Hirata, Mikiya Ito
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Patent number: 4600370Abstract: An apparatus for carrying unvulcanized pneumatic tires in a tire vulcanizer, comprising: a plurality of upper arcuate segments disposed substantially within a cylindrical surface, each of the upper arcuate segment having at its lower end an upper bead support end for supporting an upper bead portion of the unvulcanized pneumatic tire and a plurality of lower arcuate segments disposed within the upper arcuate segments, each lower arcuate segment having rotatably mounted at its lower end a lower bead support member for supporting a lower bead portion of the unvulcanized pneumatic tire and being movably supported by the corresponding upper arcuate segment. The upper arcuate segments are expandable and contractable radially inward and outward together with the lower arcuate segments. Each of the upper and lower arcuate segments are movable toward and away from with each other and overlapped with each other when moved toward each other.Type: GrantFiled: May 16, 1985Date of Patent: July 15, 1986Assignee: Bridgestone CorporationInventors: Shigeru Kaneko, Yoshiaki Hirata, Yoshio Nohara
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Patent number: 4454289Abstract: The invention relates to a high molecular weight .beta.-1,3-glucan composed of repeated glucopyranose units, each unit being represented by the formula: ##STR1## The .beta.-1,3-glucan exhibits anticarcinogenic activity. A process for producing said glucan is also claimed.Type: GrantFiled: February 23, 1982Date of Patent: June 12, 1984Assignee: Takara Shuzo Co., Ltd.Inventors: Kazuo Nakajima, Yoshiaki Hirata, Hiroyuki Uchida, Tomoko Shiomi, Tsutomu Taniguchi, Akira Obayashi, Osamu Tanabe, Takuma Sasaki
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Patent number: 4409385Abstract: A polysaccharide having anticarcinogenic activity, and a process for its production from a strain of the genus Isaria of the class Hyphomycetes.Type: GrantFiled: February 3, 1981Date of Patent: October 11, 1983Assignee: Takara Shuzo Co., Ltd.Inventors: Kazuo Nakajima, Yoshiaki Hirata, Hiroyuki Uchida, Yoshie Kimizuka, Tsutomu Taniguchi, Akira Obayashi, Osamu Tanabe