Patents by Inventor Masakazu Hirano
Masakazu Hirano 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: 20200138227Abstract: A bell pepper decoring machine includes a cylinder-shaped hollow body including a slit formed in a longitudinal direction on the surface of the body, a serrated edge formed at one end of the body wherein serrated edge includes a plurality of blades, each of which is spaced equally, a core receiver having a receiving plate and a columnar rod connected at its one end to the center of the back side of the receiving plate wherein the core receiver is stored in the body, a height adjuster located in the slit and connected to the core receiver wherein the height adjuster is moved within the slit and wherein the core receiver is also moved in the body in conjunction with the movement of the height adjuster, a supporting plate formed at on the other end of the body, and a cutter connected to the other end of the rod with a connecter.Type: ApplicationFiled: January 8, 2020Publication date: May 7, 2020Inventors: Ying ZENG, Kaito Morita, Nasa TAKANO, Toko KAMIMATE, Masakazu HIRANO, Risa OKAZAKI, Haruna OKAMURA, Kakeru OIGAWA, Momoko MIYATA, Rei MASUDA, Daisuke TAKANASHI
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Patent number: 7133243Abstract: A magnetic disk unit writes, on a magnetic disk, a burst position error data which is used for correcting a positional error of a burst pattern which is used for correcting an error within one track, next to the burst pattern. A write head is controlled a position so as to satisfy a relationship M=N when (N?1)K<WHD<NK, where WHD denotes a core width of a write head, K denotes a pitch of burst boundaries of the burst pattern, and M denotes a number of regions of the burst position error data which need to be provided after the burst pattern. The burst position error data is written on the magnetic disk by the write head the position of which is controlled in this manner.Type: GrantFiled: September 24, 2001Date of Patent: November 7, 2006Assignee: Fujitsu LimitedInventors: Masakazu Hirano, Nobuyuki Suzuki
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Patent number: 7110207Abstract: A storage apparatus is provided with a load/unload mechanism which carries out a ramp load/unload operation to load/unload a head which is provided on an arm with respect to a recording medium by a driving part which drives the arm, and a controller controlling a driving current which is supplied to the driving part so as to undergo a gradual change during at least one of a load operation and an unload operation.Type: GrantFiled: September 27, 2001Date of Patent: September 19, 2006Assignee: Fujitsu LimitedInventors: Masakazu Hirano, Nobuyuki Suzuki
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Patent number: 7019932Abstract: A disk unit has a function of loading a head on a disk from a holding mechanism during a load operation and unloading the head from the disk during an unload operation. The disk unit includes a controller which controls a movement of the head so that the loading operation and the unloading operation are carried out in a specific region on the disk, and the specific region extends for an angular range smaller than 360°. Alternatively, the controller controls the movement of the head so that the loading operation and the unloading operation are carried out uniformly in a circumferential direction of the disk within a specific region on the disk.Type: GrantFiled: May 25, 2001Date of Patent: March 28, 2006Assignee: Fujitsu LimitedInventors: Masakazu Hirano, Nobuyuki Suzuki
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Patent number: 7002759Abstract: A lens unit for a scanning device includes a frame having a hollow cylindrical shape, the frame being defined with a lens contact portion therein, a lens accommodated in the frame contacting the lens contact portion, and a retainer accommodated in the frame to retain the lens in position, the retainer having a hollow cylindrical shape, one end side face of the retainer contacting a peripheral portion of the lens received by the frame, an other end portion of the retainer being secured to the frame so that the retainer presses the lens toward the lens contact portion of the frame to fix the lens to the frame. Deformation of the frame, lens and retainer due to the load generated as the retainer presses the lens absorbs deformation of the frame, lens and retainer due to temperature change at least within a predetermined temperature range.Type: GrantFiled: March 19, 2004Date of Patent: February 21, 2006Assignee: PENTAX CorporationInventors: Yoshihiro Hama, Masakazu Hirano
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Patent number: 6980382Abstract: The magnetic disk drive system has a read head and a write head, writes data on the track of the disk, and reads data on the track of the disk. In the present invention, the distance between the heads in the circumferential direction of the disk is computed. The distance between the heads is computed based on the distance between the position of the write head where said data is written and the position of the read head where said data is read. The timing when data is written by the write head is determined by adding said distance to the position where the data is written. Thus, the efficiency of the format of the disk is improved.Type: GrantFiled: March 5, 2002Date of Patent: December 27, 2005Assignee: Fujitsu LimitedInventors: Masakazu Hirano, Nobuyuki Suzuki
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Patent number: 6922268Abstract: There is provided a multi-beam scanning device including a first, a second and a third light emitting elements which emit a first, a second and a third light beams, respectively, and a prism unit through which the first, second and third light beams respectively emitted by the first, the second and the third light emitting elements pass. The prism unit includes at least two prisms being bonded to each other, a first reflective portion and a second reflective portion being formed on a surface on which said at least two prisms are bonded to each other. Further, the prism unit has a gap formed between the first reflective portion and the second reflective portion, the third beam emitted by the third light emitting element passing through the gap.Type: GrantFiled: March 28, 2003Date of Patent: July 26, 2005Assignee: PENTAX CorporationInventors: Yoshihiro Hama, Masakazu Hirano
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Publication number: 20040184165Abstract: A lens unit for a scanning device includes a frame having a hollow cylindrical shape, the frame being defined with a lens contact portion therein, a lens accommodated in the frame with contacting the lens contact portion defined in the frame, and a retainer accommodated in the frame to retain the lens in position, the retainer having a hollow cylindrical shape, one end side face of the retainer contacting a peripheral portion of the lens received by the frame, an other end portion of the retainer being secured to the frame so that the retainer presses the lens toward the lens contact portion of the frame to fix the lens to the frame.Type: ApplicationFiled: March 19, 2004Publication date: September 23, 2004Applicant: PENTAX CorporationInventors: Yoshihiro Hama, Masakazu Hirano
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Patent number: 6754027Abstract: A head speed control method for a disk unit having a head provided on a tip end of an arm is constructed to include a step of switching and controlling a head speed to a plurality of target speeds which are set in advance, during at least one of a ramp unload operation in which the head is receded to a parking area other than on a recording surface of a disk and a ramp load operation in which the head receded at the parking area is returned on the recording surface of the disk.Type: GrantFiled: December 15, 2000Date of Patent: June 22, 2004Assignee: Fujitsu LimitedInventors: Masakazu Hirano, Nobuyuki Suzuki
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Patent number: 6690496Abstract: The multi-beam scanning device includes first and second light emitting elements that emit first and second light beams, respectively, a polygon mirror that deflects the first and second light beams to simultaneously scan the first and second light beams across an object. A prism having a light entrance portion and a light exit portion is located between the light emitting elements and the polygon mirror such that the first light beam enters the first prism through the light entrance portion and exits from the first prism through the light exit portion toward the polygon mirror. The light exit portion is inserted into the optical path of the second light beam to prevent a part of the second light beam from proceeding toward the polygon mirror.Type: GrantFiled: January 22, 2003Date of Patent: February 10, 2004Assignee: Pentax CorporationInventors: Yoshihiro Hama, Masakazu Hirano
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Publication number: 20030207143Abstract: A shock absorbing material comprising an Al—Mg—Si series aluminum alloy having high strength and showing excellent energy absorbing property when compressed in the axial direction of extrusion is obtained. The shock absorbing material of the invention has a hollow cross section, mainly comprises a fibrous structure and can be manufactured by press quenching just after extrusion followed by aging. In the press quenching, press quenching under air-cooling advantageous in view of the dimensional accuracy or the cost can be adopted. Further, the shock absorbing material of the invention has excellent cracking resistance to a compressive load in the lateral direction as well as in the axial direction. The shock absorbing material of the invention is suitable as side members or bumper stays in the frame structures of automobiles.Type: ApplicationFiled: April 23, 2003Publication date: November 6, 2003Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd)Inventors: Hitoshi Kawai, Shinji Yoshihara, Masakazu Hirano
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Patent number: 6639750Abstract: This invention relates to a head loading/unloading method for moving a head that reads storage medium away from that storage medium, and makes optimal unloading operation possible. In a storage device comprising a storage medium 6, head 4, actuator 3 and control circuits 9, when the amount of continuous time when there is no access reaches the unload starting time, the head 4 is moved away from the storage medium 6. This unload starting time is made to be variable and is changed according to the state of the device. Therefore, an optimal unloading operation that corresponds to the state of the device is possible, that also has a balance among device life, access time and resistance to shock.Type: GrantFiled: September 28, 2000Date of Patent: October 28, 2003Assignee: Fujitsu LimitedInventors: Masakazu Hirano, Nobuyuki Suzuki
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Patent number: 6634411Abstract: A discharge system (100) may discharge gases produced by a die-casting machine. The die-cast machine may include a first die (150) and a second die (170) that are configured in order to form cast products. A closure device defines an enclosed region (190) between opposing surfaces (151, 171) of the first and second dies. A transfer device (110, 120, 122, 130) serves to discharge the gases within the enclosed region to the outside. The first and second dies are configured to form a portion of the closure device.Type: GrantFiled: July 29, 2002Date of Patent: October 21, 2003Assignee: Kabushiki Kaisha Toyota JidoshokkiInventors: Masakazu Hirano, Koichi Kawaura
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Publication number: 20030184833Abstract: There is provided a multi-beam scanning device including a first, a second and a third light emitting elements which emit a first, a second and a third light beams, respectively, and a prism unit through which the first, second and third light beams respectively emitted by the first, the second and the third light emitting elements pass. The prism unit includes at least two prisms being bonded to each other, a first reflective portion and a second reflective portion being formed on a surface on which said at least two prisms are bonded to each other. Further, the prism unit has a gap formed between the first reflective portion and the second reflective portion, the third beam emitted by the third light emitting element passing through the gap.Type: ApplicationFiled: March 28, 2003Publication date: October 2, 2003Applicant: PENTAX CorporationInventors: Yoshihiro Hama, Masakazu Hirano
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Publication number: 20030142381Abstract: The multi-beam scanning device includes first and second light emitting elements that emit first and second light beams, respectively, a polygon mirror that deflects the first and second light beams to simultaneously scan the first and second light beams across an object. A prism having a light entrance portion and a light exit portion is located between the light emitting elements and the polygon mirror such that the first light beam enters the first prism through the light entrance portion and exits from the first prism through the light exit portion toward the polygon mirror. The light exit portion is inserted into the optical path of the second light beam to prevent a part of the second light beam from proceeding toward the polygon mirror.Type: ApplicationFiled: January 22, 2003Publication date: July 31, 2003Inventors: Yoshihiro Hama, Masakazu Hirano
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Publication number: 20030090824Abstract: The magnetic disk drive system has a read head and a write head, writes data on the track of the disk, and reads data on the track of the disk. In the present invention, the distance between the heads in the circumferential direction of the disk is computed. The distance between the heads is computed based on the distance between the position of the write head where said data is written and the position of the read head where said data is read. The timing when data is written by the write head is determined by adding said distance to the position where the data is written. Thus, the efficiency of the format of the disk is improved.Type: ApplicationFiled: March 5, 2002Publication date: May 15, 2003Applicant: FUJITSU LIMITEDInventors: Masakazu Hirano, Nobuyuki Suzuki
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Patent number: 6563660Abstract: This invention relates to a motor velocity control method and storage device for performing loading/unloading control of a head that reads from a storage medium in order to move it away from the storage medium. In order to detect accurate velocity from the counter electromotive voltage of the motor for performing loading/unloading control, the storage device comprises a storage medium 6, head 4, actuator 3, control circuit 19 and ramp 11. Velocity control is performed by using the velocity detected from the counter electromotive voltage of the actuator 3 in the unloading/loading control of moving the head 4 away from the storage medium 6. Moreover, the transient response voltage of the actuator is calculated and the detected voltage is corrected. Furthermore, the velocity offset coefficient for converting the counter electromotive voltage to velocity is calibrated. Also, the velocity correction coefficient for converting the counter electromotive voltage to velocity is calibrated.Type: GrantFiled: September 28, 2000Date of Patent: May 13, 2003Assignee: Fujitsu LimitedInventors: Masakazu Hirano, Nobuyuki Suzuki
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Patent number: 6533245Abstract: A valve device including a main body formed with a passage for allowing a refrigerant to flow therethrough; and a valve member provided in the passage. The main body includes an aluminum alloy containing 0.2 to 1.5 weight % of Si; 0.2 to 1.5 weight % of Mg; 0.001 to 0.2 weight % Ti; at least 0.1 weight % of Mn, Zr or the both; and Al and inevitable impurities, and having a fiber structure.Type: GrantFiled: October 2, 2001Date of Patent: March 18, 2003Assignees: Kabushiki Kaisha Kobe Seiko Sho, Denso Corporation, Fujikoki CorporationInventors: Masao Takemoto, Masakazu Hirano, Kazuhiko Watanabe, Teruyuki Hotta, Shigeji Ohishi
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Publication number: 20030041925Abstract: An Al-Mg-Si based aluminum alloy extrusion having large strength, absorbable impact energy and resistance against compressing cracking, wherein the average size of Mg2Si precipitation in the [1 0 0] and [0 1 0] directions of the (1 0 0) plane inside grains is 20 nm or more, the distribution density of the Mg2Si precipitation in the [0 0 1] direction of the (1 0 0 ) plane is 100 or more per &mgr;m2, and the size of precipitations on grain boundaries is 1000 nm or less. Alternatively, in the Al-Mg-Si based aluminum alloy extrusion, a tensile strength obtained from a tensile test performed at a strain rate of 1000 per second is from 150 to 400 N/mm2 (both inclusive).Type: ApplicationFiled: June 5, 2002Publication date: March 6, 2003Applicant: KABUSHIKI KAISHA KOBE SEIKO SHOInventors: Shinji Yoshihara, Hitoshi Kawai, Masakazu Hirano
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Patent number: 6522488Abstract: In a magnetic disk apparatus in which heads integrally having write heads and read heads are arranged correspondingly to data surfaces of plural media, servo information including phase servo patterns is written discretely in a track direction onto the data surfaces of the plural media. For this reason, at first, displacement amounts of the read heads with respect to the write heads are measured in each head and each cylinder position of the media. Next, phases of the phase servo patterns are adjusted so that relative displacement amounts between the reads heads are eliminated in each head and each cylinder position of the media, and the phase servo patterns are written.Type: GrantFiled: November 30, 2000Date of Patent: February 18, 2003Assignee: Fujitsu LimitedInventors: Tatsuro Sasamoto, Masakazu Hirano