Patents by Inventor Yoshifumi Akae

Yoshifumi Akae 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: 4871936
    Abstract: A commutator 4 for a starter motor comprises a plurality of segments 4a electrically connected to armature coils 3, an insert member 4b fitted to an armature shaft 2, and a glass-fiber-reinforced phenol resin 4c molded to integrate the segments with the insert member, wherein mica particles in a range of 5%-10% by weight are uniformly contained in the resin.
    Type: Grant
    Filed: September 20, 1988
    Date of Patent: October 3, 1989
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yoshifumi Akae, Takasi Yamamoto, Koji Arima, Tetsuo Yagi
  • Patent number: 4821588
    Abstract: A starter motor includes axial protrusions 9a formed on an end face of a pinion 9 on the side of an engine starting gear 10 with which the pinion meshes to transmit rotation thereto, for breaking alien substances deposited around the pinion by rotation to thereby enable the pinion to mesh with the gear smoothly.
    Type: Grant
    Filed: January 26, 1988
    Date of Patent: April 18, 1989
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yoshifumi Akae, Tatuo Yabe
  • Patent number: 4680979
    Abstract: A planetary gear starter with a molded synthetic resin ring gear supported by a frame is disclosed. The ring gear has longitudinally-extending ribs formed in its outer surface which confront longitudinally-extending inward projections formed in the inner surface of the frame. A cylindrical elastic member has an annular portion which is press fit over the ring gear and longitudinally-extending projections which fit into the cavities formed between adjacent ribs and inward projections in the frame. The projections of the elastic member serve as shock absorbers and elastically transmit torque from the ring gear to the frame. The elastic member has an annular portion which reinforces the open end of the ring gear.
    Type: Grant
    Filed: December 18, 1985
    Date of Patent: July 21, 1987
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Akira Morishita, Yoshifumi Akae, Kyoichi Okamoto, Taiichi Nakagawa, Hiroyuki Morikane, Tadami Kounou, Takemi Arima, Akinori Hasegawa
  • Patent number: 4622930
    Abstract: An engine starter protecting device which prevents engagement of the starter's pinion with the ring gear of the engine, even when the engine is rotating. Sensors detect when the gear shift lever is in the neutral position, when the frequency of the ignition pulses for the engine is above a predetermined value, when the vacuum pressure of the intake air to the engine is at or below a predetermined value, when the vacuum pressure of the intake air to the engine is at or below a predetermined value, and when the output voltage from the altenator of the invention exceeds a predetermined voltage. The electromagnetic switch which controls the starter motor is prevented from operating unless the outputs from the detectors are in predetermined states.
    Type: Grant
    Filed: June 21, 1985
    Date of Patent: November 18, 1986
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Isao Hamano, Akira Morishita, Yoshifumi Akae, Youji Nishimura, Toshinori Tanaka, Kiyoshi Yabunaka
  • Patent number: 4596159
    Abstract: This invention relates to a starting system for an internal combustion engine comprising a prime mover, a pinion which is disposed at one end of the rotary shaft of the prime mover and which is held in rushing-in meshing engagement with a ring gear of an engine, the engine being a first load device, and a one-way clutch which is disposed at the other end of the rotary shaft of the prime mover and which generates a driving force in only a rotating direction reverse to a driving direction of the ring gear, a unidirectional turning force being applied to a second load device through the one-way clutch.
    Type: Grant
    Filed: October 18, 1983
    Date of Patent: June 24, 1986
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Isao Hamano, Akira Morishita, Yoshifumi Akae, Toshinori Tanaka, Kiyoshi Yabunaka
  • Patent number: 4590385
    Abstract: An automatic starter for a vehicle equipped with an automatic transmission with which excessively abrupt starting of the engine of the vehicle is inhibited. The automatic starter includes an accelerator pedal having first and second accelerator pedal members. The first accelerator pedal member is attached to the second accelerator pedal member through a returning elastic member so as to be biased apart. A rod extends downwardly from the second accelerator pedal member through the first accelerator pedal member with the lower end of the rod forming the operating element of a solenoid. The two accelerator pedal members carry contacts which are closed when the second accelerator pedal member is depressed downwardly against the first accelerator pedal member. Upon the starting of the vehicle, the solenoid is energized to hold the two accelerator pedal members together.
    Type: Grant
    Filed: November 15, 1983
    Date of Patent: May 20, 1986
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Isao Hamano, Akira Morishita, Yoshifumi Akae, Toshinori Tanaka, Kouichi Matsumoto, Takeo Gotou, Kiyoshi Yabunaka
  • Patent number: 4570583
    Abstract: An engine starter protecting device which prevents engagement of the starter's pinion with the ring gear of the engine, even when the engine is rotating. Sensors detect when the gear shift lever is in the neutral position, when the frequency of the ignition pulses for the engine is above a predetermined value, when the vacuum pressure of the intake air to the engine is at or below a predetermined value, when the vacuum pressure of the intake air to the engine is at or below a predetermined value, and when the output voltage from the alternator of the invention exceeds a predetermined voltage. The electromagnetic switch which controls the starter motor is prevented from operating unless the outputs from the detectors are in predetermined states.
    Type: Grant
    Filed: November 29, 1983
    Date of Patent: February 18, 1986
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Isao Hamano, Akira Morishita, Yoshifumi Akae, Youji Nishimura, Toshinori Tanaka, Kiyoshi Yabunaka
  • Patent number: 4558992
    Abstract: An air pump device comprises an electric motor, a low and a high pressure type pump disposed at both ends of a rotary shaft extending from the motor to be connected in series to each other through a discharge tube from the low pressure type pump extending to a suction port of the high pressure type pump, and an air suction tube connected via a valve to the discharge tube downstream of a change-over switch disposed in the discharge tube.
    Type: Grant
    Filed: May 1, 1985
    Date of Patent: December 17, 1985
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Isao Hamano, Akira Morishita, Yoshifumi Akae, Youji Nishimura, Toshinori Tanaka, Kiyoshi Yabunaka
  • Patent number: 4553441
    Abstract: A starting system for an internal combustion engine, comprising a stator; a cylindrical rotor which is arranged on an inner peripheral side of the stator with a predetermined gap therefrom; an overrunning clutch which includes a first cylindrical clutch body that is mounted on an inner peripheral surface of the rotor, and a second cylindrical clutch body that is clutch-coupled with the first clutch body; a rotary shaft which is penetratingly arranged on an inner peripheral portion of the second clutch body of the overrunning clutch, which is axially movable relative to the second clutch body and which rotates along with the second clutch body; a pinion which is disposed at one end of the rotary shaft and which is brought into meshing engagement with a ring gear of the engine being a first load device; a power transmission mechanism which is disposed at the other end of the rotary shaft and which transmits power to a second load device; and a shift lever which slides the rotary shaft in the axial direction the
    Type: Grant
    Filed: October 18, 1983
    Date of Patent: November 19, 1985
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Isao Hamano, Akira Morishita, Yoshifumi Akae, Toshinori Tanaka, Kiyoshi Yabunaka
  • Patent number: 4543923
    Abstract: An engine starter comprises a d.c. motor, a pinion secured to one end of the rotary shaft of the d.c. motor, a rotary flange having a ring gear which is always interlocked with the pinion to be driven, a flywheel which is on one hand, connected to the rotary flange through rotational force one-way coupling clutch and is, on the other hand, firmly secured to the crank shaft of the engine, an air motor connected to the other end of the rotary shaft of the d.c. motor and an air tank communicated to the air motor through a piping, an electromagnetic valve being interposed in the piping.
    Type: Grant
    Filed: November 17, 1983
    Date of Patent: October 1, 1985
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Isao Hamano, Kiyoshi Yabunaka, Yoshifumi Akae, Toshinori Tanaka, Takeo Gotou, Kouichi Matsumoto
  • Patent number: 4500794
    Abstract: This invention relates to an apparatus for automatically starting and stopping an engine comprising a clutch switch for detecting that the depression of a clutch pedal of a vehicle is completely performed, a neutral switch for detecting the neutral position of a transmission, a vehicle speed sensor for generating a travel signal by detecting the travel of the vehicle, condition detecting means for detecting the operation maintaining condition of the engine, and control means for automatically stopping the engine by interrupting the energization of an ignition circuit when receiving a detection signal of the neutral switch and not receiving the detection signals of the vehicle speed sensor and the condition detecting means and automatically starting the engine by energizing the ignition circuit and a starter when receiving a detection signal of the clutch switch and not receiving the detection signals of the neutral switch, said vehicle speed sensor and the condition detecting means.
    Type: Grant
    Filed: November 28, 1983
    Date of Patent: February 19, 1985
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Isao Hamano, Akira Morishita, Yoshifumi Akae, Toshinori Tanaka
  • Patent number: 4497291
    Abstract: A fuel economizer for a vehicle for automatically stopping the engine of the vehicle a predetermined time after detecting that the transmission of the vehicle is in a neutral position, the cooling water temperature of the engine is in a predetermined range and that the clutch pedal of the vehicle is not trodden, and for automatically starting the engine when detecting that the clutch pedal is completely trodden, the R.P.M. of the engine is less than a predetermined value and that the transmission is not in a neutral position.
    Type: Grant
    Filed: November 30, 1983
    Date of Patent: February 5, 1985
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Isao Hamano, Akira Morishita, Yoshifumi Akae, Toshinori Tanaka, Kiyoshi Yabunaka