Patents by Inventor Tsutomu Matsuo

Tsutomu Matsuo 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).

  • Patent number: 9469515
    Abstract: An outlet port of a hydraulic pump/motor and a bottom chamber of a lift cylinder are connected to each other by a hydraulic fluid passage. A hydraulic fluid passage that is connected to a hydraulic fluid tank is formed to branch off the hydraulic fluid passage. A flow control valve controls the hydraulic fluid delivered from the lift cylinder when the fork is lowered, thereby regulating the flow rate of hydraulic fluid supplied to the hydraulic pump/motor and the flow rate of hydraulic fluid supplied to the hydraulic fluid tank. If regenerative operation can be performed, the flow control valve is closed and hydraulic fluid is delivered to the hydraulic pump/motor. If regenerative operation cannot be performed, the flow control valve is opened and hydraulic fluid is delivered to the hydraulic fluid tank. In either case, the fork can be lowered at an instructed speed.
    Type: Grant
    Filed: January 16, 2013
    Date of Patent: October 18, 2016
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Tsutomu Matsuo, Hirohiko Ishikawa, Yuki Ueda, Tetsuya Goto, Junichi Morita
  • Publication number: 20160297656
    Abstract: A hydraulic control device of a forklift truck includes a first hydraulic cylinder, a first instructing member, a second hydraulic cylinder, a second instructing member, a hydraulic pump, an electric motor, a first oil passage, a lowering control valve, a second oil passage that is branched from the first oil passage at a junction, a flow control valve, a first pilot passage through which pressure in the first oil passage at a position between the first hydraulic cylinder and the lowering control valve is applied to a first accommodating chamber of the flow control valve as the pressure upstream of the lowering control valve, and a second pilot passage through which pressure in the first oil passage at a position between the lowering control valve and the hydraulic pump is applied to a second accommodating chamber of the flow control valve as the pressure downstream of the lowering control valve.
    Type: Application
    Filed: April 6, 2016
    Publication date: October 13, 2016
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yuki UEDA, Naoya YOKOMACHI, Tsutomu MATSUO, Takashi UNO
  • Publication number: 20160002017
    Abstract: A hydraulic control device for a forklift includes: a plurality of hydraulic mechanisms including a lifting/lowering hydraulic cylinder and a tilting hydraulic cylinder; a hydraulic pump; an electric motor; a discharge control mechanism; a proportional valve; a flow rate control valve; and a controller. When the lifting/lowering hydraulic cylinder performs a lowering operation of the fork and a hydraulic mechanism other than the lifting/lowering hydraulic cylinder simultaneously performs a further operation, the controller controls an open degree of the proportional valve in accordance with a rotation speed difference of a required lowering operation rotation speed for the hydraulic pump, which is required to perform the lowering operation at an instructed speed that is in accordance with an operation amount of the lifting/lowering control member, and a required further operation rotation speed for the hydraulic pump, which is required to perform the further operation.
    Type: Application
    Filed: February 12, 2014
    Publication date: January 7, 2016
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yuki UEDA, Tsutomu MATSUO, Takashi UNO, Hirohiko ISHIKAWA
  • Publication number: 20150300380
    Abstract: An electromagnetic switching valve, for which the maximum opening is set to be small, is disposed on piping between a lift cylinder and a hydraulic pump motor. A pilot check valve, for which the maximum opening is set to be larger than the electromagnetic switching valve, is disposed on piping, different from the piping, between the lift cylinder and the hydraulic pump motor. In addition, during lowering operations, first, the electromagnetic switching valve is opened, and then after the same is opened, the pilot check valve is opened after a prescribed time has passed. Thus, the shock generated when lowering an object to be raised/lowered is reduced and a fork is operated quickly.
    Type: Application
    Filed: October 18, 2012
    Publication date: October 22, 2015
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yuki Ueda, Tsutomu Matsuo, Hirohiko Ishikawa
  • Publication number: 20150013324
    Abstract: An outlet port of a hydraulic pump/motor and a bottom chamber of a lift cylinder are connected to each other by a hydraulic fluid passage. A hydraulic fluid passage that is connected to a hydraulic fluid tank is formed to branch off the hydraulic fluid passage. A flow control valve controls the hydraulic fluid delivered from the lift cylinder when the fork is lowered, thereby regulating the flow rate of hydraulic fluid supplied to the hydraulic pump/motor and the flow rate of hydraulic fluid supplied to the hydraulic fluid tank. If regenerative operation can be performed, the flow control valve is closed and hydraulic fluid is delivered to the hydraulic pump/motor. If regenerative operation cannot be performed, the flow control valve is opened and hydraulic fluid is delivered to the hydraulic fluid tank. In either case, the fork can be lowered at an instructed speed.
    Type: Application
    Filed: January 16, 2013
    Publication date: January 15, 2015
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Tsutomu Matsuo, Hirohiko Ishikawa, Yuki Ueda, Tetsuya Goto, Junichi Morita
  • Publication number: 20140331662
    Abstract: A hydraulic control device for a forklift includes a hydraulic pump, a single electric motor for driving the hydraulic pump, an outflow control mechanism provided between a lift cylinder and the hydraulic pump, a flow control valve provided between the outflow control mechanism and a draining portion, and a controller. When a lowering operation of a fork and either forward or rearward mast tilting operations of a mast are performed at the same time, the controller controls the electric motor based on a target speed of the hydraulic pump. The flow control valve controls the flow rate of hydraulic fluid from the lift cylinder to the hydraulic pump and the flow rate from the lift cylinder to the draining portion in accordance with the difference between the actual rotation speed of the hydraulic pump and the target rotation speed of the hydraulic pump.
    Type: Application
    Filed: December 10, 2012
    Publication date: November 13, 2014
    Applicants: NISHINA INDUSTRIAL CO., LTD., KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yuki Ueda, Tsutomu Matsuo, Hirohiko Ishikawa, Tetsuya Goto, Junichi Morita, Toshinari Fukatsu, Akira Nakajo, Ryo Yazawa
  • Patent number: 8357013
    Abstract: The present invention involves connectors for reducing Far-End Crosstalk (FEXT) through the use of novel polarity swapping to negate the cumulative effect of FEXT. Skew adjustment is used to improve the FEXT cancellation from polarity swapping. The polarity reversal location or locations among FEXT sources are optimized to achieve maximum FEXT cancellation. The novelty polarity swapping technique can be applied to a wide variety of connectors, such as mezzanine connectors, backplane connectors, and any other connectors that can benefit from FEXT reduction.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: January 22, 2013
    Assignee: Hirose Electric Co., Ltd.
    Inventors: Tatsuya Arai, Ching-Chao Huang, Clement Kam Lam Luk, Jeremy Buan, Tsutomu Matsuo, Toshiyuki Takada, Masakazu Nagata
  • Publication number: 20100183141
    Abstract: The present invention involves chip-to-chip communication systems for reducing Far-End Crosstalk (FEXT) through the use of novel polarity swapping to negate the cumulative effect of FEXT. Skew adjustment is used to improve the FEXT cancellation from polarity swapping. The polarity reversal location or locations among FEXT sources are optimized to achieve maximum FEXT cancellation. The novelty polarity swapping technique can be applied to a wide variety of systems that can benefit from FEXT reduction.
    Type: Application
    Filed: November 5, 2009
    Publication date: July 22, 2010
    Applicant: Hirose Electric USA Inc.
    Inventors: Tatsuya Arai, Ching-Chao Huang, Clement Kam Lam Luk, Jeremy Buan, Tsutomu Matsuo, Toshiyuki Takada, Masakazu Nagata
  • Publication number: 20100184307
    Abstract: The present invention involves connectors for reducing Far-End Crosstalk (FEXT) through the use of novel polarity swapping to negate the cumulative effect of FEXT. Skew adjustment is used to improve the FEXT cancellation from polarity swapping. The polarity reversal location or locations among FEXT sources are optimized to achieve maximum FEXT cancellation. The novelty polarity swapping technique can be applied to a wide variety of connectors, such as mezzanine connectors, backplane connectors, and any other connectors that can benefit from FEXT reduction.
    Type: Application
    Filed: November 5, 2009
    Publication date: July 22, 2010
    Applicant: Hirose Electric USA Inc.
    Inventors: Tatsuya Arai, Ching-Chao Huang, Clement Kam Lam Luk, Jeremy Buan, Tsutomu Matsuo, Toshiyuki Takada, Masakazu Nagata
  • Patent number: 7445467
    Abstract: A board electrical connector includes a plurality of the terminals provided in a housing. The terminals are attached to a circuit board on one side of the housing and fit each other with a middle connector on the other side of the housing. The terminals contact with pad portions of middle members of the middle connector. A receiving groove having an opening portion to receive an edge portion of the middle member of the middle connector is provided in the housing. A contact portion of the terminal enters the receiving groove for contacting with the middle member with a contact pressure. A protrusion having a smaller entry amount than that of the contact portion is provided on an inner wall surface of the receiving groove in a receiving direction of the receiving groove. The protrusion is situated at the same position as that of the contact portion.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: November 4, 2008
    Assignee: Hirose Electric Co., Ltd.
    Inventor: Tsutomu Matsuo
  • Patent number: 7413475
    Abstract: An electrical connector (10) has ground planes (13). Each ground plane (13) crosses counter ground planes (36) of the counter connector (30) so as to make a lattice structure when the counter connector (30) is fitted to the connector (10). The contact section (12C) of a signal terminal (12) of the connector (10) has a plane surface perpendicular to the surface of the corresponding counter contact section (34A) of the counter signal terminal (34), and formed at a flexible elastic arm (12B) in the plane surface. The ground plane (13) has pressure-welding sections (18B) and (20B), which individually elastically contact with the facing inner surfaces of each slit, at a portion to be put into each slit of the counter ground plane (36).
    Type: Grant
    Filed: September 14, 2006
    Date of Patent: August 19, 2008
    Assignee: Hirose Electric Co., Ltd.
    Inventors: Tsutomu Matsuo, Tadashi Ohshida
  • Patent number: 7329818
    Abstract: In a transmission circuit board, ground terminal portions (10) are disposed at every other two rows in both end columns. Each of signal circuit layers (20) includes at least a pair of adjacent signal connecting portions electrically connected to a pair of the wiring portions (21, 22) arranged in parallel in a row direction and the column direction different from those on an adjacent signal circuit layer. Each of the ground layers is electrically connected to at least one of the ground terminal portions (10) in the both end columns.
    Type: Grant
    Filed: August 11, 2005
    Date of Patent: February 12, 2008
    Assignee: Hirose Electric Co., Ltd.
    Inventor: Tsutomu Matsuo
  • Patent number: 7247057
    Abstract: A transmission board (10) comprises a frame body (30) and a surface board (20) supported by the frame body (30) and having a transmission circuit. The frame body (30) has plugging edges (33, 34) that project from the edges of the surface board (20) for guiding the terminals of mating connectors to connection pads on the surface board (20). The plugging edges have guiding slopes 33A and 33B, and 34A and 34B. At least the plugging edges of the frame body (30) are made of a metal or resin molding.
    Type: Grant
    Filed: May 25, 2006
    Date of Patent: July 24, 2007
    Assignee: Hirose Electric Co., Ltd.
    Inventors: Tsutomu Matsuo, Masakazu Nagata
  • Publication number: 20070066140
    Abstract: An electrical connector (10) has ground planes (13). Each ground plane (13) crosses counter ground planes (36) of the counter connector (30) so as to make a lattice structure when the counter connector (30) is fitted to the connector (10). The contact section (12C) of a signal terminal (12) of the connector (10) has a plane surface perpendicular to the surface of the corresponding counter contact section (34A) of the counter signal terminal (34), and formed at a flexible elastic arm (12B) in the plane surface. The ground plane (13) has pressure-welding sections (18B) and (20B), which individually elastically contact with the facing inner surfaces of each slit, at a portion to be put into each slit of the counter ground plane (36).
    Type: Application
    Filed: September 14, 2006
    Publication date: March 22, 2007
    Inventors: Tsutomu Matsuo, Tadashi Ohshida
  • Patent number: 7112098
    Abstract: A transmission board (10) comprises a frame body (30) and a surface board (20) supported by the frame body (30) and having a transmission circuit. The frame body (30) has plugging edges (33, 34) that project from the edges of the surface board (20) for guiding the terminals of mating connectors to connection pads on the surface board (20). The plugging edges have guiding slopes 33A and 33B, and 34A and 34B. At least the plugging edges of the frame body (30) are made of a metal or resin molding.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: September 26, 2006
    Assignee: Hirose Electric Co.,Ltd.
    Inventors: Tsutomu Matsuo, Masakazu Nagata
  • Publication number: 20060211309
    Abstract: A transmission board (10) comprises a frame body (30) and a surface board (20) supported by the frame body (30) and having a transmission circuit. The frame body (30) has plugging edges (33, 34) that project from the edges of the surface board (20) for guiding the terminals of mating connectors to connection pads on the surface board (20). The plugging edges have guiding slopes 33A and 33B, and 34A and 34B. At least the plugging edges of the frame body (30) are made of a metal or resin molding.
    Type: Application
    Filed: May 25, 2006
    Publication date: September 21, 2006
    Inventors: Tsutomu Matsuo, Masakazu Nagata
  • Publication number: 20060042828
    Abstract: In a transmission circuit board, ground terminal portions (10) are disposed at every other two rows in both end columns. Each of signal circuit layers (20) includes at least a pair of adjacent signal connecting portions electrically connected to a pair of the wiring portions (21, 22) arranged in parallel in a row direction and the column direction different from those on an adjacent signal circuit layer. Each of the ground layers is electrically connected to at least one of the ground terminal portions (10) in the both end columns.
    Type: Application
    Filed: August 11, 2005
    Publication date: March 2, 2006
    Inventor: Tsutomu Matsuo
  • Publication number: 20060042829
    Abstract: A transmission circuit board structure comprises at least one signal layer formed by a plurality of signal lines (20) arranged side by side, at least one ground layer formed of a ground plate (30) and provided in parallel to the signal layer, and a support member (10) made of a dielectric material, formed integrally with the signal lines to support the signal lines. The support member (10) has at least one connection member (12), which abuts against the ground plate (30) at a position where the insulation layer made by an air space is produced between the signal lines (20) and the ground plate (30).
    Type: Application
    Filed: August 25, 2005
    Publication date: March 2, 2006
    Inventors: Tsutomu Matsuo, Masakazu Nagata
  • Publication number: 20050266921
    Abstract: A game where in a plan view, the view point and the view direction are set so that both of the player character and the boss character are included within a horizontal visual field and that the virtual camera observes the boss character from behind the player character. In the elevation view, the view point and the view direction of the virtual camera are set so that they are moved into below the player character when the boss character enters over the horizontal line in the area of vertical visual field angle. Therefore, the operation of fighting against the boss character is simplified without different feeling from the fighting against the trivial characters, with securing the dynamics and interest as a game.
    Type: Application
    Filed: May 10, 2005
    Publication date: December 1, 2005
    Inventors: Yasuhiro Hayashida, Tsutomu Matsuo
  • Patent number: 6945787
    Abstract: An electrical connector (10) for a circuit board (P1) includes a fixing member (20) having a first housing (21) with a mount face facing to the circuit board and at least one fixing piece (25) for fixing the first housing to the circuit board, and a connection member (30) having a second housing (32) with a mount face facing to the circuit board and a plurality of terminals (33) connected with circuit traces of the circuit board. The connection member is supported by the fixing member by a bottle neck such that the second housing is spaced from the first housing.
    Type: Grant
    Filed: February 2, 2004
    Date of Patent: September 20, 2005
    Assignee: Hirose Electric Co., Ltd.
    Inventor: Tsutomu Matsuo