Patents by Inventor Tsuyoshi Nakajima

Tsuyoshi Nakajima 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: 9675845
    Abstract: Golf ball having a core and a cover of one or more layers, the core being formed of a material molded under heat from a rubber composition including a base rubber, an organic peroxide, and water and/or a metal monocarboxylate. Defining the tan ? slope as (tan ?10?tan ?1)/(10%?1%), where tan ?1 and tan ?10 are the loss tangents at dynamic strains of, respectively, 1% and 10% when the loss tangents of the core center and the core surface are measured at ?12° C. and 15 Hz, the difference between the tan ? slopes at the core surface and the core center is larger than 0.002. Because a core material which undergoes little decrease in resilience over time and experiences little energy loss can be obtained, the golf ball maintains a good rebound, has a reduced spin rate and thus is able to achieve an increased distance.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: June 13, 2017
    Assignee: Bridgestone Sports Co., Ltd.
    Inventors: Tsuyoshi Nakajima, Yuichiro Ozawa
  • Publication number: 20160375315
    Abstract: In a golf ball having a core and a cover, the core is formed of a rubber composition, has center and surface portions which are unfoamed regions and has an intermediate portion containing a foamed region. The core is produced by charging the rubber composition, which contains a blowing agent, into a first curing mold and curing under given conditions, then removing the molded rubber material in a semi-cured state from the first mold, transferring the semi-cured material to a second curing mold and curing under given conditions. The foamed region of the core deforms by a certain degree at the time of impact, decreasing the radius of gyration of the ball and enabling a lower spin rate to be achieved. The decrease in resilience due to expansion of the molded material can be held to a minimum.
    Type: Application
    Filed: May 24, 2016
    Publication date: December 29, 2016
    Applicant: Bridgestone Sports Co., Ltd.
    Inventor: Tsuyoshi NAKAJIMA
  • Publication number: 20160354644
    Abstract: In a golf ball having a core, a cover and an intermediate layer therebetween, the ball and a sphere consisting of the core encased by the intermediate layer have surface hardnesses which satisfy a specific relationship, the intermediate layer and the cover have thicknesses which satisfy a specific relationship, and the core has a hardness profile in which the hardnesses at the core center, at positions 5 mm, 10 mm and 15 mm from the core center and at the core surface satisfy specific relationships. This ball, when played by mid- and high-level amateur golfers, achieves a good distance on driver shots, has a soft feel at impact and maintains the spin performance at a high level on approach shots.
    Type: Application
    Filed: April 27, 2016
    Publication date: December 8, 2016
    Applicant: Bridgestone Sports Co., Ltd.
    Inventors: Hideo WATANABE, Akira KIMURA, Tsuyoshi NAKAJIMA, Takanori TAGO, Hiroyuki ONO
  • Patent number: 9509095
    Abstract: A charging connector in accordance with the present invention includes: connector cases that house a connector fitting portion; a locking arm in which a locking claw retractable from an outer peripheral surface of the connector fitting portion is provided at a tip, and that rocks centering around a shaft core between a locking position and a releasing position; and a coil spring that biases the locking arm toward the locking position. The locking arm includes a lock releasing portion that is inserted into a through hole formed in the connector cases, and with which the locking arm can be operated to the releasing position from an outside of the connector cases.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: November 29, 2016
    Assignees: YAZAKI CORPORATION, NISSAN MOTOR CO., LTD.
    Inventors: Takenori Ohmura, Tsuyoshi Nakajima
  • Publication number: 20160279484
    Abstract: In a golf ball having, in order, a core, an envelope layer, an intermediate layer and a cover, the following conditions are satisfied: (I) ball surface hardness>intermediate layer surface hardness>envelope layer surface hardness<core surface hardness, (II) (Shore D hardness at core surface?Shore D hardness at envelope layer surface)?10, (III) (cover thickness?intermediate layer thickness)>0.05 mm, (IV) (intermediate layer thickness?envelope layer thickness)>0.05 mm, and (V) (Cs?C10)/(C10?Cc)>1.0 (where Cs denotes the JIS-C hardness at the core surface, C10 the JIS-C hardness at a position 10 mm from a center of the core, and Cc the JIS-C hardness at the core center). The ball provides an excellent flight performance when struck by the average golfer, a feel that is both soft and solid, and an excellent durability to repeated impact.
    Type: Application
    Filed: February 19, 2016
    Publication date: September 29, 2016
    Applicant: Bridgestone Sports Co., Ltd.
    Inventors: Hideo WATANABE, Atsuki KASASHIMA, Tsuyoshi NAKAJIMA, Takanori TAGO
  • Patent number: 9446673
    Abstract: A lock mechanism, when a restricting member is being moved to a predetermined position which corresponds to one of a locked state or an unlocked state, imparts a torque, using a motor, to move the restricting member from an inner-side position near the predetermined position to the predetermined position using a toggle spring disposed between the restricting member and a vehicle body side.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: September 20, 2016
    Assignees: Nissan Motor Co., Ltd., Mitsuba Corporation
    Inventors: Tsuyoshi Nakajima, Tsuyoshi Maruyama, Hiroyuki Senda
  • Publication number: 20160199701
    Abstract: The invention provides a golf ball having a core and a cover of one layer or a plurality of layers, the core being formed of a material molded under heat from a rubber composition containing: (A) a base rubber, (B) an organic peroxide, and (C) water and/or a metal monocarboxylate. The core has a hardness profile which satisfies specific relationships between the JIS-C hardness at the core center (Cc), the JIS-C hardness at a position 10 mm from the core center (C10) and the JIS-C hardness at the core surface (Cs).
    Type: Application
    Filed: December 18, 2015
    Publication date: July 14, 2016
    Applicant: Bridgestone Sports Co., Ltd.
    Inventors: Hideo WATANABE, Tsuyoshi NAKAJIMA, Yuichiro OZAWA
  • Publication number: 20160184655
    Abstract: The invention provides a golf ball having a core and a cover of one layer or a plurality of layers, wherein the core is formed of a material molded under heat from a rubber composition containing (A) a base rubber, (B) an organic peroxide, and (C) water and/or a metal monocarboxylate, and has a hysteresis loss of 50% or less when compressed at a load cell speed of 500 mm/min and under a constant load of 5,000 N.
    Type: Application
    Filed: December 30, 2015
    Publication date: June 30, 2016
    Applicant: Bridgestone Sports Co., Ltd.
    Inventors: Kae YAMAZAKI, Tsuyoshi NAKAJIMA, Yuichiro OZAWA
  • Publication number: 20160166887
    Abstract: Golf ball having a core and a cover of one or more layers, the core being formed of a material molded under heat from a rubber composition including a base rubber, an organic peroxide, and water and/or a metal monocarboxylate. Defining the tan ? slope as (tan ?10?tan ?1)/(10%?1%), where tan ?1 and tan ?10 are the loss tangents at dynamic strains of, respectively, 1% and 10% when the loss tangents of the core center and the core surface are measured at ?12° C. and 15 Hz, the difference between the tan ? slopes at the core surface and the core center is larger than 0.002. Because a core material which undergoes little decrease in resilience over time and experiences little energy loss can be obtained, the golf ball maintains a good rebound, has a reduced spin rate and thus is able to achieve an increased distance.
    Type: Application
    Filed: December 8, 2015
    Publication date: June 16, 2016
    Applicant: BRIDGESTONE SPORTS CO., LTD.
    Inventors: Tsuyoshi NAKAJIMA, Yuichiro OZAWA
  • Patent number: 9364721
    Abstract: The invention provides a golf ball having a core and a cover of at least one layer. The core has a cross-sectional hardness which, letting (H?14) be a JIS-C hardness at a position 14 mm in from a surface toward a center of the core, (H?8) be a JIS-C hardness at a position 8 mm in from the surface toward the center of the core, (H?6) be a JIS-C hardness at a position 6 mm in from the surface toward the center of the core, and (H?4) be a JIS-C hardness at a position 4 mm in from the surface toward the center of the core, satisfies the formulas (1) H?14<70, (2) H?8<72, (3) H?6<75, and (3) H?4?H?8>8.
    Type: Grant
    Filed: May 1, 2012
    Date of Patent: June 14, 2016
    Assignee: Bridgestone Sports Co., Ltd.
    Inventors: Tsuyoshi Nakajima, Kazufumi Tabata, Yuichiro Ozawa, Takashi Ohira, Hiroshi Higuchi
  • Patent number: 9350118
    Abstract: A charging port locking device is provided with an engagement member provided in a charging connector, for regulating the removal of the charging connector by engagement with an engagement part provided in a charging port, a restriction member provided in a vehicle, for restricting the disengagement of the engagement member, and a lock actuator for driving the restriction member. By virtue of the charging port locking device, the unintentional disconnection of the charging connector from the charging port can be avoided during charging in a state in which the charging port and the charging connector are connected.
    Type: Grant
    Filed: September 20, 2012
    Date of Patent: May 24, 2016
    Assignee: NISSAN MOTOR CO., LTD.
    Inventor: Tsuyoshi Nakajima
  • Patent number: 9314673
    Abstract: A golf ball having a good rebound and excellent flight performance can be obtained using a golf ball composition which contains a diene polymer having an aluminum catalyst residue content of not more than 650 ppm.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: April 19, 2016
    Assignees: BRIDGESTONE SPORTS CO., LTD, BRIDGESTONE CORPORATION
    Inventors: Hideo Takeichi, Takashi Ohira, Yuichiro Ozawa, Tsuyoshi Nakajima, Satoru Tamaki, Yusuke Yamagata, Teppei Mori
  • Publication number: 20160074710
    Abstract: The invention provides a golf ball having a core and a cover of one layer or a plurality of layers, the core being formed of a material molded under heat from a rubber composition which includes (A) a base rubber, (B) an organic peroxide, and (C) water and/or a metal monocarboxylate. The product P×E of the difference P (mol/m3) in crosslink density between the core surface and the core center, as measured based on a toluene swelling test, multiplied by the deflection E (mm) of the core when compressed under a final load of 1,275 N (130 kgf) from an initial load state of 98 N (10 kgf) is at least 28×102 mol/m3·mm.
    Type: Application
    Filed: November 6, 2015
    Publication date: March 17, 2016
    Applicant: Bridgestone Sports Co., Ltd.
    Inventors: Tsuyoshi NAKAJIMA, Yuichiro OZAWA
  • Patent number: 9254420
    Abstract: A golf ball having a good rebound and excellent flight performance can be obtained using a golf ball composition which includes a diene polymer containing not more than 1.5% of components having a molecular weight of 30,000 or less.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: February 9, 2016
    Assignees: BRIDGESTONE SPORTS CO., LTD., BRIDGESTONE CORPORATION
    Inventors: Hideo Takeichi, Takashi Ohira, Yuichiro Ozawa, Tsuyoshi Nakajima, Satoru Tamaki, Yusuke Yamagata, Teppei Mori
  • Patent number: 9246270
    Abstract: In a power supply connector, when defect is detected at the locking part by the defect detection means, sliding of the connector body and the grasping member with respect to the case is locked by the case lock mechanism; when defect is not detected at the locking part, the case lock mechanism is released and the connector body and the grasping member become slidable in a direction of nearly the same axis line with respect to the case. When the grasping member is slid forward with respect to the case in a state in which the case lock mechanism is released, the connector body becomes movable to the front with respect to the case. As a result, in the power supply connector, the connector in the power supply side is not connectable to the connector of the power reception side when there is a defect in the locking part.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: January 26, 2016
    Assignees: FURUKAWA ELECTRIC CO., LTD., NISSAN MOTOR CO., LTD.
    Inventors: Tomoaki Toratani, Naomi Takahashi, Tsuyoshi Nakajima
  • Patent number: 9242146
    Abstract: A golf ball having a good rebound and excellent flight performance can be obtained using a golf ball composition which contains a diene polymer having a smallest molecular weight value of at least 3,000.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: January 26, 2016
    Assignees: BRIDGESTONE SPORTS CO., LTD., BRIDGESTONE CORPORATION
    Inventors: Hideo Takeichi, Takashi Ohira, Yuichiro Ozawa, Tsuyoshi Nakajima, Satoru Tamaki, Yusuke Yamagata, Teppei Mori
  • Patent number: 9242144
    Abstract: A golf ball having a good rebound and excellent flight performance can be obtained using a golf ball composition which includes a diene polymer having a molecular weight distribution (Mw/Mn) of less than 1.9.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: January 26, 2016
    Assignees: BRIDGESTONE SPORTS CO., LTD., BRIDGESTONE CORPORATION
    Inventors: Hideo Takeichi, Takashi Ohira, Yuichiro Ozawa, Tsuyoshi Nakajima, Satoru Tamaki, Yusuke Yamagata, Teppei Mori
  • Patent number: 9242145
    Abstract: A golf ball endowed with a good rebound and an excellent flight performance can be obtained using a golf ball composition of good workability which contains a diene polymer having a peak top molecular weight (Mp) on a molecular weight distribution curve measured using gel permeation chromatography (GPC) of at least 40×104 and not more than 100×104.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: January 26, 2016
    Assignees: BRIDGESTONE SPORTS CO., LTD., BRIDGESTONE CORPORATION
    Inventors: Hideo Takeichi, Takashi Ohira, Yuichiro Ozawa, Tsuyoshi Nakajima, Satoru Tamaki, Yusuke Yamagata, Teppei Mori
  • Publication number: 20160020555
    Abstract: A charging connector in accordance with the present invention includes: connector cases that house a connector fitting portion; a locking arm in which a locking claw retractable from an outer peripheral surface of the connector fitting portion is provided at a tip, and that rocks centering around a shaft core between a locking position and a releasing position; and a coil spring that biases the locking arm toward the locking position. The locking arm includes a lock releasing portion that is inserted into a through hole formed in the connector cases, and with which the locking arm can be operated to the releasing position from an outside of the connector cases.
    Type: Application
    Filed: September 24, 2015
    Publication date: January 21, 2016
    Inventors: Takenori OHMURA, Tsuyoshi NAKAJIMA
  • Patent number: 9216656
    Abstract: A vehicle charging port locking device has a charging port and a locking mechanism. The charging port has an engaged part that engage an engaging part of a charging connector for supplying power from an external power source to the charging port when in an engaged state. A restraining member is movably mounted between a locked state in which release of the engaged part is restricted by movement of the restraining member in a locking direction to prevent the engaging part from being released from the engaging state, and an unlocked state in which release of the engaging part is permitted by movement of the restraining member in an unlocking direction that is opposite the locking direction. The restraining member can be moved in the unlocking direction by operation of an exposed part that can be operated from beneath the hood of the vehicle.
    Type: Grant
    Filed: September 18, 2012
    Date of Patent: December 22, 2015
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Tsuyoshi Nakajima