Patents Assigned to Ryobi, Ltd.
  • Electric key
    Patent number: 4854619
    Abstract: An electric key has a self-holding electromagnet for attracting movable means holding a locking block in its nonconductive state and for releasing the movable means in its conductive state by a spring. The movable means is returned by a hand-operation to a position where it is attracted on the electromagnet. This results in the saving of electric power.
    Type: Grant
    Filed: February 18, 1988
    Date of Patent: August 8, 1989
    Assignee: RYOBI Ltd.
    Inventor: Shunsaku Nakauchi
  • Gas venting arrangement in injection molding apparatus and method for venting gas in the injection molding apparatus
    Patent number: 4852634
    Abstract: Disclosed is a gas venting arrangement in an injection molding apparatus, and a method for venting gas out of the injection molding apparatus. The gas venting arrangement includes mold halves formed with a gas vent passage in fluid communication with a mold cavity and positioned downstream thereof, a gas vent control valve disposed at a downstream end portion of the vent passage, a detection member disposed at the vent passage for detecting injected material exceeding over the mold cavity, a valve driving mechanism connected to the gas vent control valve, and an electric control means connected between the detection member and the valve driving mechanism. The detection member generates a detection signal upon contact with the injected material and the valve driving mechanism is operated in response to the detection signal through the electric control means to operate the vent control valve.
    Type: Grant
    Filed: December 3, 1987
    Date of Patent: August 1, 1989
    Assignee: Ryobi Ltd.
    Inventors: Kazuaki Kawai, Hitoshi Ishida, Noriyoshi Yamauchi
  • Speed changer for a fishing spinning reel
    Patent number: 4850549
    Abstract: A fishing spinning reel speed changer wherein the winding handle is selectively attachable to the right and left sides of the reel. Two first and second speed change gears are integrally engaged with large and small speed change gears and movably fitted on a clutch axially displaceable on a hollow gear shaft which is rotatably supported through the spinning reel's body. A clutch lever and an attached bar may readily be assembled and disengaged to and from the spinning reel body for maintenance and when rotated move the bar to engage either the first speed change gear or the second speed change gear for low or high speed rotation.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: July 25, 1989
    Assignee: Ryobi Ltd.
    Inventor: Akinori Sakumoto
  • Clutch mechanism for use in double bearing reel
    Patent number: 4850550
    Abstract: A clutch mechanism for use in a double bearing reel includes a pivoted push lever mechanism for rotating a clutch cam to move a clutch bar to slide a pinion into and out of engagement with a spool shaft to transmit or prevent the transmission, respectively, of rotational force from a handle to the spool shaft.
    Type: Grant
    Filed: December 7, 1987
    Date of Patent: July 25, 1989
    Assignee: Ryobi Ltd.
    Inventor: Atsuhito Aoki
  • Collapsible core and method for producing the collapsible core feasible for high speed high pressure casting
    Patent number: 4834165
    Abstract: Disclosed is a collapsible core for use in a casting and a method for producing the collapsible core. The collapsible core comprises a main core body, a first layer formed over the core body, a second layer formed over the first layer, and a third layer formed over the second layer. The second layers includes a thermosetting resin such as low temperature decomposable resin. The low temperature decomposable resin comprises one of urea resin and phenol resin. The thermosetting resin is applied to the first layer by dipping, spraying or brush-painting. This thermosetting resin provides tight bonding to the neighbouring layers.
    Type: Grant
    Filed: July 28, 1988
    Date of Patent: May 30, 1989
    Assignee: Ryobi Ltd.
    Inventors: Yoshiaki Egoshi, Hideto Sasaki
  • Click sound generator for spinning reel
    Patent number: 4832279
    Abstract: A click sound generator for a spinning reel includes a clicking toothed wheel and a ratchet wheel secured to a quill that projects out of the front portion of the body of the reel. A clicking claw can be engaged with, or disengaged from, the clicking toothed wheel, and is supported on an anti-reversing lever shaft projecting out of the front portion of the body of the reel. A spring urges the clicking claw to engage the claw and clicking toothed wheel. An anti-reversing pawl is urged into engagement with the rachet wheel by a guide spring and can be disengaged from the ratchet wheel. An anti-reversing lever cam moves the clicking claw in both the axial and circumferential direction.
    Type: Grant
    Filed: February 17, 1988
    Date of Patent: May 23, 1989
    Assignee: Ryobi Ltd.
    Inventor: Kenji Maruyama
  • Fishline winding direction changeover mechanism for a fishing reel with a spool shaft supported at one end
    Patent number: 4832278
    Abstract: The present invention pertains to a fishing reel fishline winding direction changeover mechanism which allows for winding in the left-handed and right-handed positions. The mechanism allows switching of the reel, and changing over the transmission of the braking force for the left or right-handed positions, and can be easily and quickly performed without attaching and detaching any component parts. The structure includes first and second brake pawls which are pivotally coupled to a brake plate, and can be swung by elastic urging into engagement with a ratchet wheel.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: May 23, 1989
    Assignee: Ryobi Ltd.
    Inventor: Hideki Sugeta
  • Fishing reel leg with soft cover
    Patent number: 4830306
    Abstract: A spinning reel has at least one of a leg portion having a slender portion which is covered with a soft synthetic resin covering layer, a handle knob whose main body is covered with a knob cover made of soft material in a state wherein the knob main body is tightly engaged with the knob cover by engaging means and an antilever whose main body is made of hard material and which has an operating piece integrally covered with a cover member provided with slip preventing means.
    Type: Grant
    Filed: August 25, 1987
    Date of Patent: May 16, 1989
    Assignee: Ryobi Ltd.
    Inventors: Kikuo Tsunoda, Toshiaki Yorikane, Hideo Murakami
  • Braking apparatus for door closer
    Patent number: 4825503
    Abstract: An improved door closer which prevents overly rapid closing due to an external force, such as wind pressure, being exerted on the door. A pair of oil holes are formed communicating with a first pressure chamber and a non-pressure chamber formed in the main cylinder of the closer. A slide valve is disposed in a communicating hole communicating with the oil holes and extending generally perpendicular to the cylinder. A head portion and a braking valve portion are formed on the valve rod of the slide valve at positions corresponding to the oil holes. An elastic member urges the slide valve in the direction opposite to the normal flow direction of the operating oil when the door is closing. An adjusting screw controls the position of the slide valve.
    Type: Grant
    Filed: November 10, 1987
    Date of Patent: May 2, 1989
    Assignee: Ryobi Ltd.
    Inventors: Miyoshi Shiramasa, Katsuhiko Okano
  • Fishing rod and method of manufacturing same
    Patent number: 4821447
    Abstract: A fishing rod having a portion on which a leg portion of a fishing reel is mounted is composed of three layered structure integrally formed by a thermosetting manner and comprising a prepreg sheet or woven fabric layer prepared by impregnating thermosetting resin into high tension or strength fibers, a glass fiber reinforced sheet layer prepared by impregnating thermosetting resin into glass fibers, and a carbon fiber reinforced sheet layer whose fibers extend in a single orientation prepared by impregnating thermosetting resin into carbon fibers. The three layers constitute a thickened portion on which the reel is mounted. Screw threads are formed throughout the entire axial length of the thickened portion and two nut members are screw-engaged with the screw threads in an axially opposing manner to be axially movable.
    Type: Grant
    Filed: May 10, 1988
    Date of Patent: April 18, 1989
    Assignee: Ryobi Ltd.
    Inventors: Yoji Nakayama, Akira Yasui
  • Backlash prevention adjustment mechanism for a fishing reel
    Patent number: 4821975
    Abstract: A backlash prevention adjustment mechanism for a backlash prevention device includes a first magnet, a second magnet, and a nonmagnetic electroconductive member provided therebetween, being rotatable with a spool shaft, and having an eddy current induced therein by the first and second magnet to provide a braking force for the spool to prevent backlash. A motor is provided to move the first magnet relative to the second magnet to change the level of the eddy current. A lever is also provided to manually move the first magnet with respect to the second magnet. In another aspect, a shielding yoke is provided on the first magnet and is movable therewith to position a slit in the yoke proximate a first magnetism sensor or a second magnetism sensor to detect positions thereof corresponding to maximum and minimum levels of the eddy current.
    Type: Grant
    Filed: February 9, 1988
    Date of Patent: April 18, 1989
    Assignee: Ryobi Ltd.
    Inventors: Haruo Uetsuki, Takehiro Kobayashi, Kounoshin Makino
  • Motor-driven chain saw braking/locking apparatus
    Patent number: 4811487
    Abstract: An electric motor driven chain saw braking/locking apparatus with which electric current flow to the motor of the saw is halted simultaneously with braking of the motor when a hand guard is tilted forwardly. A belt brake device and a brake switching device are linked with the hand guard, which is pivotably mounted to the housing in front of a front handle, such that the braking force is applied at substantial of the same time that the switch is opened. A brake drum of the brake device is fixed to a motor drive shaft of the motor at a position where it receives cooling air from the motor. A lock mechanism is provided in the hand guard whereby, in an emergency, a braking operation with the hand guard can be easily and quickly performed.
    Type: Grant
    Filed: December 13, 1984
    Date of Patent: March 14, 1989
    Assignee: Ryobi Ltd.
    Inventors: Kazuyuki Takahashi, Yasuhiro Oe, Etushi Yamamoto
  • Fishing reel
    Patent number: D300054
    Type: Grant
    Filed: October 16, 1986
    Date of Patent: February 28, 1989
    Assignee: Ryobi Ltd.
    Inventors: Etsuo Hiraishi, Teruhisa Numata
  • Fishing reel
    Patent number: D300055
    Type: Grant
    Filed: September 11, 1986
    Date of Patent: February 28, 1989
    Assignee: Ryobi Ltd.
    Inventors: Tetsuyuki Doi, Etsuo Hiraishi
  • Fishing reel
    Patent number: D300842
    Type: Grant
    Filed: February 27, 1987
    Date of Patent: April 25, 1989
    Assignee: Ryobi Ltd.
    Inventors: Tetsuyuki Doi, Masaharu Nouma
  • Fishing reel
    Patent number: D300843
    Type: Grant
    Filed: June 5, 1987
    Date of Patent: April 25, 1989
    Assignee: Ryobi Ltd.
    Inventors: Tetsuyuki Doi, Etsuo Hiraishi
  • Fishing reel
    Patent number: D300844
    Type: Grant
    Filed: June 19, 1987
    Date of Patent: April 25, 1989
    Assignee: Ryobi Ltd.
    Inventors: Etsuo Hiraishi, Teruhisa Numata
  • Portable electric driver
    Patent number: D301198
    Type: Grant
    Filed: November 19, 1986
    Date of Patent: May 23, 1989
    Assignee: Ryobi Ltd.
    Inventors: Kiyoshi Hoshino, Toshiaki Saito
  • Hedge trimmer
    Patent number: D301961
    Type: Grant
    Filed: July 8, 1987
    Date of Patent: July 4, 1989
    Assignee: Ryobi Ltd.
    Inventors: Masaharu Narisue, Kiyoshi Hoshino
  • Power concrete hammer
    Patent number: D301967
    Type: Grant
    Filed: July 22, 1986
    Date of Patent: July 4, 1989
    Assignee: Ryobi Ltd.
    Inventors: Masakazu Sakamoto, Toshiaki Saito