Patents by Inventor Hirokazu Hiraoka

Hirokazu Hiraoka 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: 20160286775
    Abstract: A fishing reel that includes a reel body, a housing part that defines an opening part, a driving member that includes a pinion that is supported by the reel body and extends through the opening part of the housing part, and a magnetic seal device affixed to the housing part that includes a central opening through which the pinion extends. The magnetic seal device includes first and second magnetic plates that maintain a magnet therebetween and a magnetic fluid that is maintained at a gap between the driving member and at least one of the first and second magnetic plates.
    Type: Application
    Filed: January 26, 2016
    Publication date: October 6, 2016
    Inventors: Hirokazu Hirayama, Daiki Sumikawa, Hirokazu Hiraoka
  • Patent number: 9370173
    Abstract: A spinning reel includes a reel body, a handle, a spool shaft, a spool, a rotor, a rotor driving mechanism, and an oscillating mechanism configured to rotate in conjunction with the handle and cause the spool to reciprocate via the spool shaft. The oscillating mechanism includes a threaded shaft having a spiral groove and is configured to rotate in conjunction with the rotation of the handle. A slider is engaged with the spiral groove of the threaded shaft, and is configured to reciprocate in conjunction with rotation of the threaded shaft. A guide shaft has a rear end disposed in the through-hole arranged in the rear portion of the reel body, and is locked so as to prevent the shaft from disconnecting from by the reel body, and is configured to guide the reciprocation of the slider. An annular elastic member is disposed between the through-hole and the guide shaft.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: June 21, 2016
    Assignee: Shimano Inc.
    Inventors: Shingo Matsuo, Hirokazu Hiraoka, Keigo Kitajima
  • Patent number: 9363988
    Abstract: A spinning reel for forwardly unreeling a fishing line includes a reel main body having a through-hole extending through the peripheral wall in a longitudinal direction of the spinning reel, a handle configured to wind a fishing line, and being rotatably mounted to the reel main body. A screw member has a screw head disposed on a first end, a screw shaft section extending from the screw head toward a second end, and male threads disposed on the screw shaft section, the screw head contacting a peripheral wall at the front end side of the through-hole and the screw shaft section extending through the through-hole. A stopper member is mounted to the screw shaft section and contacts a periphery of the rear end side of the through-hole. A cover member has a fixed section fixed by the screw member, and covers a rear of the reel main body.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: June 14, 2016
    Assignee: Shimano Inc.
    Inventors: Shingo Matsuo, Hirokazu Hiraoka, Keigo Kitajima
  • Patent number: 9363987
    Abstract: A line roller basically includes a bearing member and a guide member. The bearing member includes: an inner race having a cylindrical shape; an outer race having a cylindrical shape and a plurality of rotting elements. The outer race is disposed on an outer peripheral side of the inner race. The rolling elements are circumferentially aligned at intervals between the inner race and the outer race. The guide member is made of a material of the same kind as that of the outer race. Further, the guide member is a tubular member having a guide surface for guiding a fishing line on the outer peripheral surface thereof. The guide member is firmly fixed to the bearing member on the outer peripheral surface of the bearing member.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: June 14, 2016
    Assignee: Shimano Inc.
    Inventor: Hirokazu Hiraoka
  • Publication number: 20160150769
    Abstract: The present invention is a line roller unit that includes a line roller, a bearing, a cylindrical member, and a first magnetic seal. The line roller possesses a guider on its periphery surface that guides a fishing line. The bearing is set up on the inner circumference of the line roller, with the cylindrical member possessing a holding part that holds bearing. The cylindrical member is set up on the inner circumference of bearing. The first magnetic seal possesses both a first magnet and a first holding member that holds the first magnet, and the first magnetic seal forms the first magnetic circuit for holding the magnetic liquid at the space between the cylindrical member. The first magnetic seal is set up on the line roller.
    Type: Application
    Filed: May 21, 2015
    Publication date: June 2, 2016
    Inventors: Hirokazu HIRAOKA, Hirokazu Hirayama
  • Publication number: 20160113261
    Abstract: This invention is characterized by a reel body, a pinion gear that is supported by the rotation function of the reel body, a one-way clutch that is fitted to the pinion gear and that limits the rotation of the pinion gear to one direction, a rotor that is fitted to the pinion gear and rotates with it while also containing a boss section, a part of which is connected to the pinion gear and extends to the one-way clutch, a magnetic body that is formed and makes a circuit around the periphery of the rotation direction of the boss section, a magnet that is configured facing the rotational radius direction with a gap in the magnetic body, with the magnet that faces the rotational radius direction with a gap in the magnetic body being sandwiched between the magnetic plates in a direction facing the spool shaft, and the magnetic sealing mechanism wherein is found magnetic fluid that is placed in the gap between the magnetic plates and the magnetic body, and whereby the space between the cover member and the magnetic
    Type: Application
    Filed: May 19, 2015
    Publication date: April 28, 2016
    Inventors: Hirokazu HIRAYAMA, Hirokazu HIRAOKA
  • Patent number: 9295242
    Abstract: A spinning reel for delivering fishing line has a spinning reel body, a handle, a rotor, and a spool. A rotor body of the rotor has a cylindrical coupling portion, a first rotor arm, and a second rotor arm. A first cover member of the rotor is removably attached to the rotor body covering a radially outer side of the first rotor arm. A first guard member of the rotor is removably attached to the rotor body and has a first guard portion covering a boundary between an outside surface of the coupling portion and a rear end surface of the coupling portion. A second guard member of the rotor is removably attached to the rotor body and has a second guard portion that covers the boundary between the outside surface and the rear end surface at a position opposing the first guard portion.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: March 29, 2016
    Assignee: Shimano Inc.
    Inventor: Hirokazu Hiraoka
  • Publication number: 20160073619
    Abstract: A line roller for guiding fishing line onto a spool of a spinning reel, includes a bearing member, a retaining member and a guide member. The bearing member includes an inner ring, an outer ring, and a rolling body. The retaining member abuts both ends of the outer ring. The guide member includes a guide surface for guiding the fishing line, is disposed radially outside of the retaining member, and engages the retaining member.
    Type: Application
    Filed: August 24, 2015
    Publication date: March 17, 2016
    Inventors: Koji OCHIAI, Hirokazu HIRAOKA
  • Patent number: 9226487
    Abstract: A gear attachment structure receives rotation of a handle assembly. The gear attachment structure includes a traverse cam shaft and a driven gear. The traverse cam shaft includes a shaft body, a gear support portion and a gear engaging portion. The gear support portion includes intersecting helical grooves on the outer peripheral surface. The gear support portion is disposed on an end of the shaft body and has a circular cross-section. The gear engaging portion includes a pair of circular-arc portions and a pair of straight portions. The circular-arc portions are opposed to each other while being either disposed along and within the outer periphery of the gear support portion or disposed radial outwards of the gear support portion. One of the straight portions is coupled to one ends of the circular-arc portions whereas the other of the straight portions is coupled to the other ends of the circular-arc portions.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: January 5, 2016
    Assignee: Shimano, Inc.
    Inventor: Hirokazu Hiraoka
  • Patent number: 9226486
    Abstract: A spinning reel spool according to a first aspect of the present invention is a spinning reel spool that delivers fishing line forward. The spinning reel spool comprises a spool body and a ring member. This spool body has a body portion and a protruding portion. The protruding portion is integrally formed on a front side of the body portion. The protruding portion is annularly arranged and protrudes from the body portion in an axial direction of the spool body. The ring member is disposed on an outer circumferential portion of the protruding portion of the spool body. The ring member is held between the body portion and a plastically deformed part of the protruding portion.
    Type: Grant
    Filed: October 3, 2013
    Date of Patent: January 5, 2016
    Assignee: Shimano Inc.
    Inventors: Hirokazu Hiraoka, Takuji Takamatsu, Keigo Kitajima, Kouji Ochiai, Akihiko Sato
  • Patent number: 9210923
    Abstract: A spinning reel configured to forwardly reel out a fishing line includes a handle, a spool, a rotor, an oscillating mechanism, a rotor drive mechanism, and a reel unit. The reel unit includes a fishing rod attachment leg, a chassis, a lid member, a reel unit guard, a protruding portion, and a restriction portion. The chassis has a mechanism attachment space to accommodate the oscillating mechanism and the rotor drive mechanism. The protruding portion protrudes towards at least one of the chassis and the lid member from an inner lateral surface of the reel unit guard. The restriction portion is disposed on at least of the chassis and the lid member. The restriction portion is engaged with the protruding portion to restrict the reel unit guard from moving in a direction away from the fishing rod attachment leg.
    Type: Grant
    Filed: December 5, 2013
    Date of Patent: December 15, 2015
    Assignee: Shimano Inc.
    Inventor: Hirokazu Hiraoka
  • Patent number: 9210921
    Abstract: A line clip of a spinning reel includes a mounting member and a clip member. The mounting member is configured to be mounted to the spool. The clip member is disposed on the mounting member, and is configured to lock the fishing line between the clip member and the surface of the spool. The clip member comprises a mounting end portion having the mounting member attached thereto, the mounting end portion having a predefined width in a circumferential direction of the spool, an introduction end portion configured to have a fishing line introduced thereto, and a movement restriction portion disposed between the mounting end portion and the introduction end portion, having a width that is different from the predefined width, and being configured to restrict the fishing line from moving to the introduction section side.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: December 15, 2015
    Assignee: Shimano Inc.
    Inventors: Hirokazu Hiraoka, Shingo Matsuo
  • Patent number: 9149029
    Abstract: A spinning reel includes a handle, a reel unit, a rotor, a spool, a spool shaft, and an oscillating mechanism. The oscillating mechanism includes a traverse cam and a slider including a slider body, a through hole, an engaging member, a first bearing, and a retainer member. The slider body is coupled to the spool shaft. The engaging member has a shaft part and an engaging part. The engaging part is mounted to a tip end of the shaft part to be engaged with helical grooves. The first bearing has a fitted part, a protruding part, and a support hole. The fitted part is fitted into the through hole. The protruding part has a diameter smaller than a diameter of the fitted part. The fitted part includes a stepped surface on an end thereof abutting the protruding part. The retainer member retains the first bearing at the stepped surface.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: October 6, 2015
    Assignee: Shimano Inc.
    Inventor: Hirokazu Hiraoka
  • Publication number: 20150201598
    Abstract: A spinning reel includes a reel body. The real body includes a lid portion having a fitting recess and a groove. An axle bearing member fits into the fitting recess. The fitting recess includes an inner surface that contacts the axle bearing member and a bottom surface that contacts the axle bearing member. The groove is formed on the inner surface.
    Type: Application
    Filed: October 30, 2014
    Publication date: July 23, 2015
    Inventors: Hirokazu HIRAOKA, Hirokazu HASHIMOTO
  • Patent number: 9055735
    Abstract: The reel unit includes a chassis, a lid member, a guard member, a tubular part, and a screw member. The chassis includes a mechanism attachment space at a lateral side thereof, a first opening extending through a front edge of the chassis, and a second opening extending through a rear edge of the chassis. The guard member includes a boss being inserted into the second opening from the rear edge of the chassis. The guard member is attached to the chassis and the lid member from behind to cover the chassis and the lid member. The tubular part is disposed between the first opening and the second opening within the mechanism attachment space and arranged to be liquid-tight. The screw member passes through the first opening and being screwed into the boss. The screw member includes a head being held inside the tubular part.
    Type: Grant
    Filed: May 15, 2013
    Date of Patent: June 16, 2015
    Assignee: Shimano Inc.
    Inventor: Hirokazu Hiraoka
  • Publication number: 20150157000
    Abstract: A first seal member is disposed forward of a one-way clutch so as to prevent water intrusion into the one-way clutch. A second seal member is disposed forward of the first seal member so as to prevent water intrusion into the one-way clutch. Further, the second seal member has a first inner peripheral surface disposed with a gap from an outer peripheral surface of a tubular portion. The first inner peripheral surface facing the outer peripheral surface of a tubular portion. At least either of the first inner peripheral surface and the outer peripheral surface of the tubular portion has water-repellent properties.
    Type: Application
    Filed: October 8, 2014
    Publication date: June 11, 2015
    Inventors: Hirokazu HIRAOKA, Yutaka INOUE
  • Patent number: 9004387
    Abstract: A drag knob for regulating drag force of a drag mechanism configured to brake rotation of a spool rotatably mounted to a reel unit of a fishing reel includes an operating member, a coil spring, a receiver member, and a slide member. The operating member is rotatably mounted to the reel unit. The coil spring extends and contracts in a rotary axis direction of the operating member in conjunction with rotation of the operating member. The receiver member is configured to receive urging force of the coil spring and apply drag force to the spool. The slide member is disposed between the coil spring and the receiver member in the rotary axis direction. The slide member has a friction coefficient less than a friction coefficient of the receiver member.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: April 14, 2015
    Assignee: Shimano Inc.
    Inventor: Hirokazu Hiraoka
  • Patent number: 9004386
    Abstract: A spinning reel fishing line guide mechanism for guiding a fishing line onto a spool includes a support member and a fixation member. The spinning reel fishing line guide mechanism is attached to a tip of a rotor arm and is pivotable between a fishing-line guide position and a fishing-line release position. The support member is attached pivotably to the tip of the rotor arm. The support member includes an outer member made of metal and an inner member made of synthetic resin. The inner member is fixed to an inner surface of the outer member.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: April 14, 2015
    Assignee: Shimano Inc.
    Inventor: Hirokazu Hiraoka
  • Publication number: 20150090820
    Abstract: An oscillating mechanism includes a traverse camshaft, an engaging unit, and a slider body. The traverse camshaft includes a spiral groove. The traverse camshaft rotates in conjunction with the winding operation of a handle attached to the reel main body. The engaging unit includes an engaging claw configured to engage the spiral groove. The slider body includes a supporting hole rotatably supporting the engaging unit. A groove extends in the penetration direction of the supporting hole, and is disposed on the inner peripheral surface of the supporting hole of the slider body.
    Type: Application
    Filed: September 3, 2014
    Publication date: April 2, 2015
    Inventors: Koji OCHIAI, Shingo MATSUO, Hirokazu HASHIMOTO, Hirokazu HIRAOKA
  • Publication number: 20150060586
    Abstract: A coiled wave spring includes a first and second coiled portions. The first coiled portion has a plurality of first valley parts and a plurality of first peak parts. The first valley parts and the first peak parts are alternately disposed in a circumferential direction. The second coiled portion has a plurality of second peak parts and a plurality of second valley parts. The second peak parts respectively correspond to the first valley parts, whereas the second valley parts respectively correspond to the first peak parts. The second coiled portion extends continuously from the first coiled portion. The first peak parts are disposed away from the corresponding second valley parts at an interval in an axial direction. The first valley parts contact the corresponding second peak parts. Apices of the first valley parts are shifted from apices of the corresponding second peak parts in the circumferential direction.
    Type: Application
    Filed: July 21, 2014
    Publication date: March 5, 2015
    Inventors: Takuji TAKAMATSU, Hirokazu HIRAOKA, Kenichi KAWAGOSHI