Patents by Inventor Yosuke Kondo

Yosuke Kondo 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).

  • Publication number: 20110278799
    Abstract: The invention provides a seal ring capable of stably leaking a sealed fluid from an inner peripheral face side. In a seal ring in which an inter-side face leak passage S3 connecting a first space S1 and a second space S2 is provided to a fitted portion of a first protruding portion 10R1 fitted in a second recessed portion 10L2 and a fitted portion of a second protruding portion 10R2 fitted in a first recessed portion 10L2, a passage communicating with an inner peripheral face side and with the inter-side face leak passage is formed when an end portion on an inner peripheral side of one cut end portion 10R and an end portion on an inner peripheral side of the other cut end portion are in contact with each other.
    Type: Application
    Filed: January 19, 2010
    Publication date: November 17, 2011
    Applicant: NOK CORPORATION
    Inventors: Kazunari Seki, Yosuke Kondo, Koji Watanabe
  • Patent number: 8020079
    Abstract: According to one embodiment, a decoder device includes a decoder configured to decode a to-be-decoded sequence by performing an iterative decoding process and to perform a parity check of a decoding result using a check matrix, a detector configured to detect that the to-be-decoded sequence is a non-code word based on a parity check result for each row of the check matrix by the decoder, and a controller configured to control the decoder according to a detection result of the detector.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: September 13, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yosuke Kondo, Kenji Yoshida
  • Patent number: 7942423
    Abstract: A resin lip type seal (1) capable of increasing safety against rupture by reducing rigidity of a plate-like lip (4) bent around a tip point A of a approximately wedge-shaped recessed part (8) to reduce stress concentration at the point A, suppressing the lowering of sealability due to a reduction in creep of the lip, and increasing the follow-up capability of the lip to the eccentricity of its axis. Indentations are formed on the slidable contact surface (41) of the plate-like lip (4) or/and the anti-slidable contact surface (42) thereof. Indentations (7) are also formed on the sloped slidable contact surface (21) of the inner lip (2) of the seal. Then, the ratio of the portion of each of the slidable contact surfaces where the indentations (7) are formed is ½ or more of each of the surface areas of the slidable contact surfaces (21, 41, 42).
    Type: Grant
    Filed: May 24, 2006
    Date of Patent: May 17, 2011
    Assignee: NOK Corporation
    Inventors: Yosuke Kondo, Yasuaki Tanabe, Junichi Nakayama, Tamio Inamura, Koichi Mizunoya, Takeo Otani, Kokichi Hamamoto
  • Publication number: 20100306617
    Abstract: According to one embodiment, a decoder device includes a decoder configured to decode a to-be-decoded sequence by performing an iterative decoding process and to perform a parity check of a decoding result using a check matrix, a detector configured to detect that the to-be-decoded sequence is a non-code word based on a parity check result for each row of the check matrix by the decoder, and a controller configured to control the decoder according to a detection result of the detector.
    Type: Application
    Filed: May 28, 2010
    Publication date: December 2, 2010
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yosuke Kondo, Kenji Yoshida
  • Publication number: 20100290151
    Abstract: According to one embodiment, a disk controller includes a reader, a selector, and a combining module. The reader performs, when retrying reading data from a magnetic disk, a plurality of read operations with respect to the same area on the magnetic disk while offsetting a head that reads data from the magnetic disk. The selector selects likely read data from a plurality of pieces of read data obtained as results of the read operations performed by the reader based on a predetermined index with respect to each of data lengths shorter than the data length of the area. The combining module combines pieces of read data selected for the data lengths, respectively.
    Type: Application
    Filed: March 1, 2010
    Publication date: November 18, 2010
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yosuke KONDO, Kenji YOSHIDA
  • Patent number: 7753376
    Abstract: There is provided a plunger seal (1) for a fuel injection pump for a direct-injection gasoline engine, in which, even if a resin material is used for a fuel seal member (12), the plunger seal can be made compact, sealing ability is increased, and assembling man-hours can be reduced, and in which set sealing performance can be achieved when a U-shaped elastic member (33) for applying an energizing force in a diametrical direction is used in a groove (41) formed in the fuel seal member (12). The resin fuel seal member (12) and an oil seal member (13) are assembled to form one seal system. Further, when the U-shaped elastic member (33) is installed in the groove (41), an axial position (L1) of an end surface (44a) at the side opposite to the sealed object of a fixing collar (44) formed on an inner peripheral surface of the groove (41) is positioned at the side (B) opposite to the sealed object than the axial position (L2) of a leading end portion (15b) of a seal lip (15) of the fuel seal member (12).
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: July 13, 2010
    Assignee: Nok Corporation
    Inventors: Yosuke Kondo, Yasuaki Tanabe, Katsutoshi Ishioka, Sosuke Ito, Shinji Nagasawa, Junichi Nakayama, Masatoshi Okada
  • Patent number: 7717432
    Abstract: There is provided a plunger seal (1) for a fuel injection pump for a direct-injection gasoline engine, in which, even if a resin material is used for a fuel seal member (12), the plunger seal can be made compact, sealing ability is increased, and assembling man-hours can be reduced, and in which set sealing performance can be achieved when a U-shaped elastic member (33) for applying an energizing force in a diametrical direction is used in a groove (41) formed in the fuel seal member (12). The resin fuel seal member (12) and an oil seal member (13) are assembled to form one seal system. Further, when the U-shaped elastic member (33) is installed in the groove (41), an axial position (L1) of an end surface (44a) at the side opposite to the sealed object of a fixing collar (44) formed on an inner peripheral surface of the groove (41) is positioned at the side (B) opposite to the sealed object than the axial position (L2) of a leading end portion (15b) of a seal lip (15) of the fuel seal member (12).
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: May 18, 2010
    Assignee: NOK Corporation
    Inventors: Yosuke Kondo, Yasuaki Tanabe, Katsutoshi Ishioka, Sosuke Ito, Shinji Nagasawa, Junichi Nakayama, Masatoshi Okada
  • Publication number: 20090322037
    Abstract: There is provided a seal ring that makes it possible to improve attachability and sealability. The seal ring 1 is separated from each other in one area and has a shape with ends, is inserted in an annular groove in a shaft by temporarily moving both the fittable ends 3 and 4 away from each other, and thereby seals an annular gap formed between the shaft and a housing that has a shaft hole into which the shaft is inserted. The seal ring is configured such that: one of both the ends 3 and 4 has a projection 31 projecting in the direction of the circumference of the seal ring; the other end 4 has a recess 42 used in combination with the projection 31. The projection 41 and the recess 42 are fitted together while slid against each other, thereby bringing both the ends 3 and 4 into contact with each other.
    Type: Application
    Filed: February 1, 2008
    Publication date: December 31, 2009
    Applicant: NOK CORPORATION
    Inventors: Yosuke Kondo, Iwao Taira, Kazunari Seki
  • Publication number: 20090302549
    Abstract: A resin lip type seal (1) capable of increasing safety against rupture by reducing the rigidity of a plate-like lip (4) bent about the tip point A of a roughly wedge-shaped recessed part (8) to reduce stress concentration at the point A, suppressing the lowering of sealability due to a reduction in the creep of the lip, and increasing the follow-up capability of the lip to the eccentricity of its axis. Slits are formed in the slidable contact surface (41) of the plate-like lip (4) or/and the anti-slidable contact surface (42) thereof. Slits (7) are also formed in the sloped slidable contact surface (21) of the inner lip (2) of the seal.
    Type: Application
    Filed: May 24, 2006
    Publication date: December 10, 2009
    Applicant: NOK CORPORATION
    Inventors: Yosuke Kondo, Yasuaki Tanabe, Junichi Nakayama, Tamio Inamura, Koichi Mizunoya, Takeo Otani, Kokichi Hamamoto
  • Publication number: 20090230630
    Abstract: To provide such a resin lip type seal (1) installed in an annular clearance between a housing (12) and a reciprocating shaft (13) that shapes of tip parts (31, 41, 61) of lips (3, 4, 6) fitted to a mating member (12 or 13) are not changed with elapse of time and the tip parts (31, 41, 61) exercise, in a well-balanced state, both a function for securing low leak, which is the feature of sharp shape, and a function for securing oil film thickness, which is the feature of round-shape, flat surfaces (21) with axial widths (W) having edge parts (22) are formed at the tip parts (31, 41, 61), and the axial widths (W) are determined to be 5 to 30% of the overall axial widths (A) of the lips (3, 4, 6).
    Type: Application
    Filed: May 19, 2006
    Publication date: September 17, 2009
    Applicant: NOK Corporation
    Inventors: Yosuke Kondo, Yasuhiro Suzuki
  • Publication number: 20090166982
    Abstract: There is provided a plunger seal (1) for a fuel injection pump for a direct-injection gasoline engine, in which, even if a resin material is used for a fuel seal member (12), the plunger seal can be made compact, sealing ability is increased, and assembling man-hours can be reduced, and in which set sealing performance can be achieved when a U-shaped elastic member (33) for applying an energizing force in a diametrical direction is used in a groove (41) formed in the fuel seal member (12). The resin fuel seal member (12) and an oil seal member (13) are assembled to form one seal system. Further, when the U-shaped elastic member (33) is installed in the groove (41), an axial position (L1) of an end surface (44a) at the side opposite to the sealed object of a fixing collar (44) formed on an inner peripheral surface of the groove (41) is positioned at the side (B) opposite to the sealed object than the axial position (L2) of a leading end portion (15b) of a seal lip (15) of the fuel seal member (12).
    Type: Application
    Filed: February 20, 2009
    Publication date: July 2, 2009
    Applicant: NOK CORPORATION
    Inventors: Yosuke Kondo, Yasuaki Tanabe, Katsutoshi Ishioka, Sosuke Ito, Shinji Nagasawa, Junichi Nakayama, Masatoshi Okada
  • Publication number: 20090166981
    Abstract: There is provided a plunger seal (1) for a fuel injection pump for a direct-injection gasoline engine, in which, even if a resin material is used for a fuel seal member (12), the plunger seal can be made compact, sealing ability is increased, and assembling man-hours can be reduced, and in which set sealing performance can be achieved when a U-shaped elastic member (33) for applying an energizing force in a diametrical direction is used in a groove (41) formed in the fuel seal member (12). The resin fuel seal member (12) and an oil seal member (13) are assembled to form one seal system. Further, when the U-shaped elastic member (33) is installed in the groove (41), an axial position (L1) of an end surface (44a) at the side opposite to the sealed object of a fixing collar (44) formed on an inner peripheral surface of the groove (41) is positioned at the side (B) opposite to the sealed object than the axial position (L2) of a leading end portion (15b) of a seal lip (15) of the fuel seal member (12).
    Type: Application
    Filed: February 20, 2009
    Publication date: July 2, 2009
    Applicant: NOK CORPORATION
    Inventors: Yosuke Kondo, Yasuaki Tanabe, Katsutoshi Ishioka, Sosuke Ito, Shinji Nagasawa, Junichi Nakayama, Masatoshi Okada
  • Patent number: 7535384
    Abstract: There is provided an apparatus which obtains a circumstance where LDPC codes are interleaved without damaging modulation rules and thereby a correction ability of LDPC encoding and decoding method is fully exhibited. The apparatus includes an RLL rule applying section which modulates user data by applying an RLL rule to the user data and thereby obtains RLL encoded sequence data, an interleave section which interleaves the RLL encoded sequence data and thereby obtains interleaved sequence data, an LDPC parity generating section which subjects the interleaved sequence data to LDPC encoding processing and thereby obtains LDPC parity sequence data, an inserting section which inserts parity of the LDPC parity sequence data in the RLL encoded sequence data in a distribution manner and thereby obtains output data, and an output section which records or transmits the output data.
    Type: Grant
    Filed: June 27, 2007
    Date of Patent: May 19, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yosuke Kondo, Kenji Yoshida
  • Patent number: 7513506
    Abstract: There is provided a plunger seal (1) for a fuel injection pump for a direct-injection gasoline engine, in which, even if a resin material is used for a fuel seal member (12), the plunger seal can be made compact, sealing ability is increased, and assembling man-hours can be reduced, and in which set sealing performance can be achieved when a U-shaped elastic member (33) for applying an energizing force in a diametrical direction is used in a groove (41) formed in the fuel seal member (12). The resin fuel seal member (12) and an oil seal member (13) are assembled to form one seal system. Further, when the U-shaped elastic member (33) is installed in the groove (41), an axial position (L1) of an end surface (44a) at the side opposite to the sealed object of a fixing collar (44) formed on an inner peripheral surface of the groove (41) is positioned at the side (B) opposite to the sealed object than the axial position (L2) of a leading end portion (15b) of a seal lip (15) of the fuel seal member (12).
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: April 7, 2009
    Assignee: Nok Corporation
    Inventors: Yosuke Kondo, Yasuaki Tanabe, Katsutoshi Ishioka, Sosuke Ito, Shinji Nagasawa, Junichi Nakayama, Masatoshi Okada
  • Publication number: 20080258405
    Abstract: A high performance sealing device having an excellent pressure resistance and realizing a prevention of damage. The sealing device usable at a working pressure of 0 to 2 MPa, and not damaged. even if the pressure of high-pressure fuel of 5 MPa or higher is applied thereto, wherein high pressure fuel on the high pressure side H is sealed by a first seal part 2, oil from a cam side on a low pressure side L is sealed by a second seal part 3, and the fuel slightly leaked due to failure of scraping at the first seal part is sealed by the second seal part to form a dual seal structure, and a resin ring 21 coming into slidable sealing contact with a shaft 10 is used in the first seal part 2, whereby abnormal abrasion does not occur even when fuel having less lubricity is used, and the durability of the seal is increased.
    Type: Application
    Filed: April 1, 2008
    Publication date: October 23, 2008
    Inventors: Masatoshi Okada, Iwao Taira, Tadashi Abiko, Yosuke Kondo, Kazuki Takeno, Ichiro Yamane
  • Publication number: 20080133999
    Abstract: According one embodiment, after receiving, as a received bit sequence, an information bit sequence which has been encoded for an error correction in the form of connecting an error correcting code to the outside of an LDPC code, the received bit sequence is subjected to the LDPC decoding, and then subjected to an error correction corresponding to the error correcting code. When the error correction corresponding to the error correcting code is impossible, a bit with low reliability is detected from the received bit sequence subjected to the LDPC decoding, and the bit is inverted, and then the received bit sequence with the inverted bit is subjected to an error correction corresponding to the error correcting code.
    Type: Application
    Filed: October 30, 2007
    Publication date: June 5, 2008
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yosuke Kondo, Kenji Yoshida
  • Publication number: 20080001792
    Abstract: There is provided an apparatus which obtains a circumstance where LDPC codes are interleaved without damaging modulation rules and thereby a correction ability of LDPC encoding and decoding method is fully exhibited. The apparatus includes an RLL rule applying section which modulates user data by applying an RLL rule to the user data and thereby obtains RLL encoded sequence data, an interleave section which interleaves the RLL encoded sequence data and thereby obtains interleaved sequence data, an LDPC parity generating section which subjects the interleaved sequence data to LDPC encoding processing and thereby obtains LDPC parity sequence data, an inserting section which inserts parity of the LDPC parity sequence data in the RLL encoded sequence data in a distribution manner and thereby obtains output data, and an output section which records or transmits the output data.
    Type: Application
    Filed: June 27, 2007
    Publication date: January 3, 2008
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yosuke Kondo, Kenji Yoshida
  • Publication number: 20070222157
    Abstract: There is provided a plunger seal (1) for a fuel injection pump for a direct-injection gasoline engine, in which, even if a resin material is used for a fuel seal member (12), the plunger seal can be made compact, sealing ability is increased, and assembling man-hours can be reduced, and in which set sealing performance can be achieved when a U-shaped elastic member (33) for applying an energizing force in a diametrical direction is used in a groove (41) formed in the fuel seal member (12). The resin fuel seal member (12) and an oil seal member (13) are assembled to form one seal system. Further, when the U-shaped elastic member (33) is installed in the groove (41), an axial position (L1) of an end surface (44a) at the side opposite to the sealed object of a fixing collar (44) formed on an inner peripheral surface of the groove (41) is positioned at the side (B) opposite to the sealed object than the axial position (L2) of a leading end portion (15b) of a seal lip (15) of the fuel seal member (12).
    Type: Application
    Filed: March 22, 2005
    Publication date: September 27, 2007
    Inventors: Yosuke Kondo, Yasuaki Tanabe, Katsutoshi Ishioka, Sosuke Ito, Shinji Nagasawa, Junichi Nakayama, Masatoshi Okada
  • Publication number: 20070182103
    Abstract: A high performance sealing device having an excellent pressure resistance and realizing a prevention of damage. The sealing device usable at a working pressure of 0 to 2 MPa, and not damaged even if the pressure of high-pressure fuel of 5 MPa or higher is applied thereto, wherein high pressure fuel on the high pressure side H is sealed by a first seal part 2, oil from a cam side on a low pressure side L is sealed by a second seal part 3, and the fuel slightly leaked due to failure of scraping at the first seal part is sealed by the second seal part to form a dual seal structure, and a resin ring 21 coming into slidable sealing contact with a shaft 10 is used in the first seal part 2, whereby abnormal abrasion does not occur even when fuel having less lubricity is used, and the durability of the seal is increased.
    Type: Application
    Filed: March 28, 2007
    Publication date: August 9, 2007
    Inventors: Masatoshi Okada, Iwao Taira, Tadashi Abiko, Yosuke Kondo, Kazuki Takeno, Ichiro Yamane
  • Publication number: 20070169621
    Abstract: A high performance sealing device having an excellent pressure resistance and realizing a prevention of damage. The sealing device usable at a working pressure of 0 to 2 MPa, and not damaged even if the pressure of high-pressure fuel of 5 MPa or higher is applied thereto, wherein high pressure fuel on the high pressure side H is sealed by a first seal part 2, oil from a cam side on a low pressure side L is sealed by a second seal part 3, and the fuel slightly leaked due to failure of scraping at the first seal part is sealed by the second seal part to form a dual seal structure, and a resin ring 21 coming into slidable sealing contact with a shaft 10 is used in the first seal part 2, whereby abnormal abrasion does not occur even when fuel having less lubricity is used, and the durability of the seal is increased.
    Type: Application
    Filed: March 28, 2007
    Publication date: July 26, 2007
    Inventors: Masatoshi Okada, Iwao Taira, Tadashi Abiko, Yosuke Kondo, Kazuki Takeno, Ichiro Yamane