Patents Assigned to Mitsubishi Denki K.K.
-
Patent number: 5111057Abstract: A starter of an engine which comprises a starting motor, a detector which generates a voltage corresponding with a revolution of the engine, an electromagnetic switch having a coil which draws a plunger that supports a moving contact so that fixed contacts are shorted by the moving contact, and a magnet which retains the drawn plunger, a main switch and a usually open touch switch for activating the electromagnetic switch in starting up of the engine, a voltage comparator which compares a weak inverse direction current flown in the coil when the fixed contacts are closed, with the voltage from the detecting means and outputs a current when the voltage is higher than the weak inverse direction current, and a switch device for stopping the starting motor which makes ON and OFF according an output from the voltage comparator and generates an inverse drawing force by flowing a strong inverse direction current in the coil.Type: GrantFiled: March 21, 1991Date of Patent: May 5, 1992Assignee: Mitsubishi Denki K.K.Inventor: Takeshi Sugiyama
-
Patent number: 5107813Abstract: A control apparatus of an internal combustion engine which comprises: a pressure detecting means for detecting an inner cylinder pressure of each cylinder of a plurality of cylinders of the internal combustion engine; a crank angle detecting means for detecting a crank angle of the internal combustion engine; indicated mean effective pressure calculating means for calculating an indicated mean effective pressure of each cylinder from an output of the pressure detecting means and an output of the crank angle detecting means; load detecting means for detecting a load of the internal combustion engine; engine speed detecting means for detecting the internal combustion engine speed from an output of the crank angle detecting means; running condition determining means for determining a running condition of the internal combustion engine from an output of the load detecting means and an output of the engine speed detecting means; and averaging and controlling means for controlling at least one of an air-fuel rationType: GrantFiled: May 21, 1991Date of Patent: April 28, 1992Assignee: Mitsubishi Denki K.K.Inventors: Hitoshi Inoue, Akira Demizu
-
Patent number: 5107814Abstract: A fuel control apparatus is provided for an internal combustion engine which has good response in fuel control during engine acceleration while incurring no reduction in the output torque.Type: GrantFiled: April 17, 1991Date of Patent: April 28, 1992Assignee: Mitsubishi Denki K.K.Inventors: Ryoji Nishiyama, Setsuhiro Shimomura
-
Patent number: 5105670Abstract: An engine starter comprising an electric motor having a hollow armature rotary shaft, a solenoid switch for energizing the electric motor and having a push rod extending into the hollow armature rotary shaft, an output rotary shaft having a pinion disposed on a front end thereof, the output rotary shaft being axially slidable relative to the armature rotary shaft to move the pinion into and out of engagement with an engine ring gear. A clutch outer member of an over-running clutch unit is mounted on the output rotary shaft and is connected to the electric motor for being rotated thereby, and a clutch inner member driven by the clutch outer member through a plurality of rollers is provided with helical splines on its inner circumferential surface.Type: GrantFiled: May 14, 1991Date of Patent: April 21, 1992Assignee: Mitsubishi Denki K.K.Inventors: Shuzoo Isozumi, Keiichi Konishi
-
Patent number: 5106355Abstract: In an planetary gear unit comprising a sum gear, an internal gear, and planetary gears which are supported through a carrier and engaged with the sun gear and the internal gear, at least a cut is formed in the internal gear in such a manner that the position of the cut is not coincident with the angular intervals of the planetary gears in the direction of revolution, and the teeth are partially removed by the cut. Hence, the part of the internal gear where the cut is formed may be curved inwardly or flattened to provide a space for accommodating anything which otherwise obstructs the installation of the planetary gear unit.Type: GrantFiled: February 8, 1991Date of Patent: April 21, 1992Assignee: Mitsubishi Denki K.K.Inventors: Shinji Nishimura, Shuzou Isozumi
-
Patent number: 5107388Abstract: A Hall-effect magnetic sensor arrangement comprising Hall-effect IC, an anti-surge electric source protective circuit electrically connected to the Hall-effect IC, and a substrate for mounting thereon the Hall-effect IC and the protective circuit. The Hall-effect IC as well as the protective circuit mounted on the substrate are in the form of a hybrid IC.Type: GrantFiled: January 31, 1991Date of Patent: April 21, 1992Assignee: Mitsubishi Denki K.K.Inventors: Shigemi Murata, Yutaka Ohashi
-
Patent number: 5105182Abstract: A direct current power supply device which generates an alarm signal when a power failure occurs in an alternating current power supply connected as an input to the device. A power failure detector circuit is connected at the input of the device and signals the failure of the AC power supply. In order to compensate for different time delays in the fall of the DC output due to varying loads at the output of the device, a reset signal generating circuit is used which is controllable in accordance with the size of the load. The circuit receives as an input, a signal identifying a power failure from the power failure detector circuit and a signal identifying the load current value from a load current value detector circuit, connected between the load and the AC/DC converter. The reset signal generating circuit, using analog or digital components, will generate a reset signal at a timing determined by the size of the load.Type: GrantFiled: January 23, 1991Date of Patent: April 14, 1992Assignee: Mitsubishi Denki K.K.Inventor: Kenji Shindo
-
Patent number: 5104204Abstract: An anti-skid brake control system capable of determining an amount of brake pressure that should be applied to a wheel of a vehicle based upon the condition of the road surface. The relationship between the amount of brake pressure applied in a current cycle and the condition of the road surface is extrapolated depending upon the duration of the non-slip period, and the brake pressure for the next cycle is modified accordingly. As a result, the brake pressure is optimized to be suitable for the current road conditions, and prevents wheel locking.Type: GrantFiled: May 16, 1990Date of Patent: April 14, 1992Assignee: Mitsubishi Denki K.K.Inventors: Yasuo Naito, Akihiko Mori, Ziroh Iihoshi
-
Patent number: 5103107Abstract: In a starter motor, its electromagnetic switch has a movable contact cooperating with normally open contact member and normally closed contact member, and a part of a stationary contact in the normally closed contact member is formed into a locking piece to prevent the movable contact from contacting the passage formed in the cap of the switch, or the electromagnetic switch has a first movable contact cooperating with normally open contact member and a second movable contact cooperating with normally closed contact member, and an insulating partition wall is disposed between the first and second movable contacts, whereby the creeping distance between the normally open contact member and the normally closed contact member is increased as much, and the occurrence of current leakage is prevented.Type: GrantFiled: November 20, 1990Date of Patent: April 7, 1992Assignee: Mitsubishi Denki K.K.Inventors: Kyohei Yamamoto, Katunori Yagi, Takashi Kinoshita
-
Patent number: 5101787Abstract: A control apparatus for an engine comprises an air-fuel ratio sensor for detecting an air-fuel ratio on the basis of an exhaust gas component from the engine, a fuel controller which receives an output from the air-fuel sensor so as to feed-back-control a fuel quantity in response to the operating conditions of the engine so that the air-fuel ratio becomes optimum, a fuel supplier to supply fuel on the basis of a signal from the fuel controller, and a target advance angle value changer which selects a fixed advance angle value for ignition timing independent from the operating conditions of the engine when an instruction signal for adjusting the ignition timing is generated from an ignition timing adjustment signal generator, an ignition device which effects ignition in accordance with an output from the target advance angle value changer, and a feed-back control stopping device which stops the feed-back control of the air-fuel ratio when the instruction signal is generated from the ignition timing adjustmentType: GrantFiled: August 5, 1991Date of Patent: April 7, 1992Assignee: Mitsubishi Denki K.K.Inventor: Hajime Kako
-
Patent number: 5101788Abstract: An internal-combustion engine control device includes a pressure sensing device for sensing a cylinder pressure of the internal-combustion engine, a crank angle sensing device for sensing a crank angle, an indicated mean effective pressure computing device for computing the illustrated mean effective pressure from the output of the pressure sensing device and the output of the crank angle sensing device, an indicated device effective pressure averaging means for averaging the output of the indicated mean effective pressure computing device, a load sensing device for sensing a load of the internal-combustion engine, a speed sensing device for sensing an engine speed of the internal-combustion engine from the output of the crank angle sensing device, an operating condition judging device for judging the operating condition of the internal-combustion engine from the output of the load sensing device and the output of the speed sensing device, and a control device for controlling at least one of air-fuel ratio anType: GrantFiled: April 19, 1991Date of Patent: April 7, 1992Assignee: Mitsubishi Denki K.K.Inventors: Akira Demizu, Hitoshi Inoue
-
Patent number: 5101709Abstract: A pneumatic actuator comprising a housing asembly (1, 2) and a diaphragm (7) defining a diaphragm chamber (6) which is in communication with the exterior through an exhaust and a suction conduit (1c, 1d). Solenoid valves (8, 9a, 9b) for opening and closing the conduit (1c, 1d) are mounted to the housing (1) and are covered by an outer cover (10) attached to the housing (1). The housing (1) has a raised outer surface (1e) which is brought into contact with the cover (10) for substantially preventing ingress of moisture. The raised outer surface (1e) of the housing (1) also has a groove (13) for collecting and exhausting moisture passed through the clearance under the outer cover (1) by the capillary action.Type: GrantFiled: January 8, 1991Date of Patent: April 7, 1992Assignee: Mitsubishi Denki K.K.Inventor: Tadayuki Fujimoto
-
Patent number: 5100307Abstract: A scroll-type fluid machine has a pair of interfitting scrolls. Each scroll has a discharge port at its center which communicates with a discharge chamber via a discharge passage formed in the scroll. A check valve is disposed in each discharge port.Type: GrantFiled: April 6, 1990Date of Patent: March 31, 1992Assignee: Mitsubishi Denki K.K.Inventors: Masumi Arita, Mitsuhiro Nishida
-
Patent number: 5101114Abstract: A starter motor for an engine which does not readily admit water into a casing thereof and which allows water to be discharged promptly from the housing. The starter motor comprises a seal member for closing a gap between an outer periphery of a pinion moving member on an output rotary shaft or of an overrunning clutch and the casing, and the casing has two communicating holes formed therein for the communication with the atmospheric air outside the casing. One of the communicating holes is formed at a lower portion of the casing so that water may be discharged outwardly from within the casing therethrough. The other communicating hole is formed at a higher location of the casing and may be a communicating groove formed in an end face of a front bracket of the casing along which the front bracket is coupled to a yoke of an electric motor which is mounted in the casing and operatively coupled to the pinion moving member by way of the overrunning clutch.Type: GrantFiled: August 31, 1990Date of Patent: March 31, 1992Assignee: Mitsubishi Denki K.K.Inventors: Shuzou Isozumi, Toshinori Tanaka
-
Patent number: 5101355Abstract: A control apparatus which detects vertical and/or lateral vibrations of a vehicle body and controls, on the basis of amplitude and frequency of vibration, a characteristic of a support unit for supporting the vehicle body, such as, a damping force and a spring force of suspension or torsion quantity of a stabilizer. The control apparatus, when the detected vibration is high frequency vibration, obtains the frequency of vibration by a measured value of one cycle period, and, when the detected vibration is low frequency vibration, obtains the frequency of vibration by a measured value of a half cycle period.Type: GrantFiled: May 29, 1990Date of Patent: March 31, 1992Assignee: Mitsubishi Denki K.K.Inventors: Shunichi Wada, Yoshihiro Tsuda
-
Patent number: 5101146Abstract: A device for correcting mechanical errors in an NC machine, by which an incremental amount of movement of a control shaft is corrected for mechanical errors such as backlash and lost motion and the value thus corrected is transmitted to a servo control section. The incremental amount of movement of the control shaft calculated every sampling is subjected to a speed adjustment. A position command value is calculated by progressively adding a command value of the incremental amount of movement subjected to a speed adjustment. A position command correction value is obtained by adding a predetermined amount of correction for mechanical error to the position command value. A corrected incremental amount of movement is calculated by substracting a previously calculated position command correction value, and is transmitted to the servo control section.Type: GrantFiled: August 7, 1990Date of Patent: March 31, 1992Assignee: Mitsubishi Denki K.K.Inventor: Takeo Teshima
-
Patent number: 5101408Abstract: An error collection method for a sorter system having n pipelined sort elements Pi (i=1-n) of the same type and n local memories Mi (i=1-n) each connected to the corresponding sort element and having a memory capacity of at least 2.sup.i-1 record length, which includes the steps of sorting in said sort elements when one of the sort elements detects a fault; reporting contents of an error to the upper structure; analyzing the error; and restarting sorting.Type: GrantFiled: November 13, 1989Date of Patent: March 31, 1992Assignees: Mitsubishi Denki K.K., Masaru KitusregawaInventors: Masaru Kitsuregawa, Yasunori Kasahara
-
Patent number: 5099703Abstract: An inertia drive engine starter comprising an electric motor having an armature shaft provided with an axial, bottomed central bore in the front end, a slide output shaft provided with a pinion at the front end thereof and a stopper at the rear end thereof received in the bottomed central bore of the armature shaft, and an overrunning clutch for transmitting the torque of the armature shaft to the slide output shaft. Internal helical splines formed in the inner surface of the inner race of the overrunning clutch and external helical splines formed in the outer surface of the slide output shaft are engaged to transmit the torque of the armature shaft to the slide output shaft and to thrust the slide output shaft to the front when the electric motor is actuated.Type: GrantFiled: February 7, 1990Date of Patent: March 31, 1992Assignee: Mitsubishi Denki K.K.Inventor: Shuzoo Isozumi
-
Patent number: 5097715Abstract: An engine starter where a pinion, which is engaged or disengaged with a ring gear of the engine to be started, is formed as an integral part of a drive shaft at an end of the drive shaft which is movable in the axial direction thereof while being rotated by an electric motor. The engine starter has no restriction of the root thickness of the pinion or the number of teeth of the pinion, and has a large gear ratio to the ring gear.Type: GrantFiled: August 21, 1991Date of Patent: March 24, 1992Assignee: Mitsubishi Denki K.K.Inventor: Shuzou Isozumi
-
Patent number: 5099163Abstract: A brush device for rotary electric machine is comprised of an outer frame, a plurality of brush holding member for accommodating brushes, a first support member for supporting a connecting plate and a second support member for supporting a grommet. In the device, each of the brush holding member has a bottom portion which is provided integrally with the outer frame. Further, the first support member and the second support member are provided integrally with the outer frame.Type: GrantFiled: December 21, 1990Date of Patent: March 24, 1992Assignee: Mitsubishi Denki K.K.Inventor: Keisaku Zenmei