Patents by Inventor Masaharu Emura

Masaharu Emura 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: 5058823
    Abstract: A clutch mechanism for a fishing reel having a spool and a spool shaft supported at both ends by a pair of side plates. a handle for rotating the spool and spool shaft is engaged through a drive gear to a pinion gear. The pinion gear is slideably mounted on the spool shaft and the device includes clutch means on the spool shaft to engage and disengage the pinion gear with the spool shaft by moving the pinion gear axially on the spool shaft. A clutch cam moves the pinion gear axially and an operating lever is linked to the clutch cam for disengaging the pinion gear from the spool shaft. Rotation of the handle in a first direction causes the pinion gear to engage the spool shaft and an operating lever is rotatably supported on a shaft extending between the side plates of the fishing reel.
    Type: Grant
    Filed: September 25, 1989
    Date of Patent: October 22, 1991
    Assignee: Ryobi Ltd.
    Inventors: Masaharu Emura, Takehiro Kobayashi
  • Patent number: 5007601
    Abstract: A water depth measuring device for a fishing reel has a mounting seat integrally provided on an upper portion of a reel body. A main section of the measuring device is integrally formed and includes a watertight compartment housing electrical components such as a sensor, a controller, an indicator, a sound maker, and a power supply. A rotation detection section of the measuring device is provided in a projecting case mounted on the reel body and includes a roller mechanism having a magnet attached thereto. A roller included in the roller mechanism is biased into contact with a fishline wound on the fishing reel to rotate upon cast of the fishline from the fishing reel to cause rotation of the magnet and the generation of a flux signal. The sensor in the main section of the measuring device detects the flux signal and an indication of the length of the fishline cast is displayed on the indicator. The sound maker provides an audible signal indicating the cast of a selected length of fishline.
    Type: Grant
    Filed: February 9, 1990
    Date of Patent: April 16, 1991
    Assignee: Ryobi Ltd.
    Inventors: Masaharu Emura, Takehiro Kobayashi
  • Patent number: 4881699
    Abstract: A spinning type fishing reel having a projection on the inside of the rotor disposed to selectively engage a spring loaded pivoting lever arm. The arm is engaged with a lever and rotation of the arm by means of the lever engages the pivot arm with the projection on the rotor. This prevents unwanted rotation of the rotor during use of the reel.
    Type: Grant
    Filed: December 16, 1987
    Date of Patent: November 21, 1989
    Assignee: Ryobi Ltd.
    Inventor: Masaharu Emura
  • Patent number: 4824046
    Abstract: In a clutch mechanism for use in a fishing reel, one end of a torsion spring is connected to a flipping cam which is rotated between a pair of pins. When the flipping cam positions at one of the pins, the torsion spring biases the clutch mechanism selectively to its ON and OFF states depending upon the state of the clutch mechanism. On the other hand, when the flipping cam positions at the other one of the pins, the torsion spring continuously biases the clutch mechanism to its ON state irrespective of the state of the clutch mechanism. Thus, in the latter condition, the clutch mechanism is shifted and held at its OFF state only during when a force exceeding the biasing force of the torsion spring continues to be applied to the clutch mechanism, and immediately when the force is removed, the clutch mechanism automatically returns to its ON state by the biasing force of the torsion spring.
    Type: Grant
    Filed: September 16, 1987
    Date of Patent: April 25, 1989
    Assignee: Ryobi Limited
    Inventors: Masaharu Emura, Takehiro Kobayashi
  • Patent number: 4779819
    Abstract: A drag mechanism for a fishing reel having a drag positioned on a traversing cam shaft, a drag ratchet axially moveable on the traversing cam shaft to adjust the dragging force, an anti-reversing ratchet on the traversing cam shaft, a drag claw and an anti-reversing pawl to alternately engage and disengage the drag ratchet with the anti-reversing ratchet, respectively, and a rotatable drag switch lever causing such engagement and disengagement.
    Type: Grant
    Filed: July 21, 1987
    Date of Patent: October 25, 1988
    Assignee: Ryobi, Ltd.
    Inventors: Masaharu Emura, Takehiro Kobayashi
  • Patent number: 4775113
    Abstract: In a double-bearing reel with a level wind mechanism in which the handle can be set either on the right or on the left, a drag mechanism is so designed that a handle shaft with a drag handle at one end can be inserted into a hollow traverse cam shaft from both ends and which is held between side frames in a manner as to be opposite openings formed in side covers, and a drag control nut is detachably engaged with one end of the transverse cam shaft the other end of which supports the master gear of a drive mechanism and drag mechanism in such a manner that the drag control nut is nonrotatable with respect to the drag handle but movable in the forward direction, whereby the handle is turned in the forward direction to increase the drag force regardless of whether the reel is operated with the handle on the right or the left of the reel.
    Type: Grant
    Filed: April 3, 1987
    Date of Patent: October 4, 1988
    Assignee: Ryobi Ltd.
    Inventors: Masaharu Emura, Takehiro Kobayashi
  • Patent number: 4762290
    Abstract: In the fishline holder, the holding member support portion has a through hole with a first diameter portion continuous to a larger second diameter portion or recess. The stem of the fishline holding member is slideably positioned in the through hole. A groove is provided at the lower end of the stem of the holding member. The fishline holding spring is engaged in the groove of the stem and the ends of the spring are supported on the inside surface of the outer wall of the body of the fishing reel or the inside surface of the holding member support. Since the holding spring engaged in the groove serves not only to hold the holding member from coming off, an exclusive component part for preventing the holding member from coming off does not need to be provided. Also, the fishline holder can be easily assembled and the cost of manufacturing is reduced.
    Type: Grant
    Filed: July 17, 1987
    Date of Patent: August 9, 1988
    Assignee: Ryobi, Ltd.
    Inventors: Masaharu Emura, Takehiro Kobayashi
  • Patent number: 4741489
    Abstract: A double-bearing reel with a level wind mechanism wherein a drag mechanism is so designed that the traverse cam shaft of the level wind mechanism supports the master gear of a drive mechanism and drag brake and has both ends confronted with openings formed in the side covers of the reel, and rotatably supported by the side frames of the reel, and that a handle shaft connected to the handle of the reel is detachably inserted into the traverse cam shaft from either end in such a manner that it is non-rotatable with respect to the traverse cam shaft, and a drag control ring and a drag handle are mounted on the handle shaft and engaged with each other in such a manner that they are movable relative to each other, whereby the drag brake can be tightened by turning the drag handle in the forward direction of rotation of the handle not only when the reel is operated with the handle on the right but also when the reel is operated with the handle on the left.
    Type: Grant
    Filed: April 2, 1987
    Date of Patent: May 3, 1988
    Assignee: Ryobi Ltd.
    Inventors: Masaharu Emura, Takehiro Kobayashi
  • Patent number: 4708303
    Abstract: A drag control mechanism for use in a fishing reel of the type wherein a drag mechanism is mounted on a handle shaft to apply a drag force against a master gear comprises a drag control member mounted on the handle shaft, a drag pawl which engages or disengages from the drag control member, a reverse rotation preventing pawl which engages the ratchet wheel and a drag switch swingable between its ON and OFF states. When the drag switch is in its ON state, the drag pawl engages the drag control member to prevent the rotation thereof and the reverse rotation pawl disengages from the ratchet wheel to permit the reverse rotation of the shaft, so that the drag force of the drag mechanism is controlled by the movement of the drag control member relative to the shaft upon the rotation of the handle.
    Type: Grant
    Filed: January 15, 1986
    Date of Patent: November 24, 1987
    Assignee: Ryobi Limited
    Inventors: Masaharu Emura, Haruo Uetsuki, Atsuhito Aoki, Takehiro Kobayashi