Patents by Inventor Tadashi Umeda
Tadashi Umeda 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).
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Patent number: 7119652Abstract: A fuse assembly is disclosed. The fuse assembly includes an electrically insulating hollow casing of a substantially rectangular parallelepiped shape in outline, a fuse element provided within the casing and supported by the casing, the casing having first and second spheroidal concaves provided therein for facilitating reflecting and converging of shock waves into focuses at the time when an arc discharge is generated due to blowing of the fuse element and the shock waves are then produced, the first and second spheroidal concaves being disposed side by side along a longitudinal direction of the casing and overlapping each other in the longitudinal direction of the casing in such a manner that inner foci of the concaves are overlapped with each other, and a pair of spaced apart electrodes provided at both ends of the casing, the fuse element being electrically connected to the spaced apart electrodes and bridged between the spaced apart electrodes.Type: GrantFiled: June 26, 2003Date of Patent: October 10, 2006Inventor: Tadashi Umeda
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Publication number: 20050040927Abstract: The shock wave generated by an explosive arc discharge in the fuse body interrupts effectively a prolongation of arcing by means of converging and reflecting the shock wave onto arc itself. Preparing the concave wall inside of the fuselink body attained this.Type: ApplicationFiled: June 26, 2003Publication date: February 24, 2005Inventor: Tadashi Umeda
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Patent number: 6499460Abstract: An engine operating region in which two ignition plugs ignite at different ignition timings is restricted to a region (phase-difference ignition region) where the effect of different ignition timings is remarkably achieved. In the operating region other than the above region, simultaneous ignition is performed. A basic ignition timing IGMAPIN of the intake ignition plugs 8I is calculated by searching a map (S11). In the phase-difference ignition region, a basic ignition timing IGMAPEX of exhaust ignition plugs 8E is calculated by searching a map (S13). By contrast, in the operating region where simultaneous ignition is to be performed, the basic exhaust ignition timing IGMAPEX is set as the basic intake ignition timing IGMAPIN (S14).Type: GrantFiled: April 6, 2001Date of Patent: December 31, 2002Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Makoto Suzuki, Tadashi Umeda
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Publication number: 20020038655Abstract: An engine operating region in which two ignition plugs ignite at different ignition timings is restricted to a region (phase-difference ignition region) where the effect of different ignition timings is remarkably achieved. In the operating region other than the above region, simultaneous ignition is performed. A basic ignition timing IGMAPIN of the intake ignition plugs 8I is calculated by searching a map (S11). In the phase-difference ignition region, a basic ignition timing IGMAPEX of exhaust ignition plugs 8E is calculated by searching a map (S13). By contrast, in the operating region where simultaneous ignition is to be performed, the basic exhaust ignition timing IGMAPEX is set as the basic intake ignition timing IGMAPIN (S14).Type: ApplicationFiled: April 6, 2001Publication date: April 4, 2002Inventors: Makoto Suzuki, Tadashi Umeda
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Patent number: 4936278Abstract: An air-fuel ratio control method for an internal combustion engine, wherein when the engine is in a feedback control region, a value of concentration of oxygen detected by the O.sub.2 sensor is compared with a predetermined reference value, and the air-fuel ratio of a mixture being supplied to the engine is controlled to a desired value in a feedback manner responsive to the comparison result. When the engine is in a predetermined high load operating region, the feedback control is interrrupted and an amount of fuel to be supplied to the engine is increased by a predetermined amount to thereby enrich the air-fuel ratio. The predetermined amount is increased when the engine is in the predetermined high load operating region and at the same time the detected oxygen concentration indicates that the air-fuel ratio is on a lean side with respect to the desired value.Type: GrantFiled: September 20, 1989Date of Patent: June 26, 1990Assignee: Honda Giken Kogyo K.K.Inventor: Tadashi Umeda
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Patent number: 4892076Abstract: A fuel supply control system for an internal combustion engine having a throttle body, and a fuel injection valve arranged in an intake manifold upstream of the throttle body for supplying fuel to all cylinders. An air throttle valve has a valve body having a notched opening formed therein and disposed to be opposite the nozzle of the fuel injection valve to increase the flow speed of intake air in the vicinity of the nozzle when the air throttle valve is fully closed. An electronic control unit controls the fuel injection valve in response to operating conditions of the engine. The electronic control unit causes the air throttle valve to be fully closed when a predetermined low rotation-speed operating condition of the engine, in which at least the rotational speed of the engine is lower than a predetermined value, is satisfied. The predetermined value of the rotational speed of the engine is set such that the lower the atmospheric pressure the smaller the predetermined value.Type: GrantFiled: September 8, 1988Date of Patent: January 9, 1990Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Kazushige Toshimits, Keiichi Osawa, Tadashi Umeda, Kunio Noguchi
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Patent number: 4805579Abstract: A method of controlling fuel supply during beginning acceleration and acceleration after the interruption of fuel supply of an internal combustion engine is provided wherein a basic fuel supply amount which is determined in accordance with stable operating conditions of the engine is increased when it is detected that the throttle valve of the engine is opened from its almost closed position. The method comprises the steps of determining a reference value by adding a predetermined value of the throttle valve opening to a detected amount or value of throttle valve opening when it is detected that the throttle valve is opened from its almost closed position. The basic fuel supply amount is additionally correctionally increased if the correctional increase of the basic fuel supply amount, which was initiated upon detection of opening of the throttle valve, has not yet reached an end when the detected value of the opening of the throttle valve reaches the throttle valve opening reference value.Type: GrantFiled: January 29, 1987Date of Patent: February 21, 1989Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Kazushige Toshimitsu, Tadashi Umeda, Hisashi Igarashi
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Patent number: 4724464Abstract: An area setting device for setting coordinates of two points in a diagonal direction in one or more areas to be copied by a photocopier utilizing key operation in sequence, in which different colors are used for coordinate display in each direction. The same colors as the coordinate displays are used for coordinate input indicators. All the points are memorized as to whether coordinates have been applied. A key input is accepted for the first point not having coordinates applied, and this converts the memorized condition. Key input acceptance and memory state conversion are repeated for all the points required.Type: GrantFiled: December 10, 1986Date of Patent: February 9, 1988Assignee: Mita Industrial Co., Ltd.Inventors: Tadashi Umeda, Hiromi Okada, Naoki Nakashima, Tetsuya Kagawa, Masanobu Maeshima, Tadashi Kobata, Shinobu Satonaka, Jun Miyoshi, Yusuke Morikawa
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Patent number: 4714338Abstract: An electrostatic copying apparatus includes a lower supporting frame, an upper supporting frame mounted on the lower supporting frame for pivotal movement between an open position and a closed position, a document placing assembly having a transparent plate for placing a document to be copied thereon, an optical unit and a driving source. Either the document placing assembly or at least a part of the optical unit is mounted reciprocally on the upper supporting frame and drivingly coupled to the driving source via a power transmission mechanism. The apparatus further includes an automatic locking device for automatically locking the document placing assembly or at least a part of the optical unit and cancelling the locking according to an operation of moving the upper supporting frame to an open or closed position or an operation incident to this moving operation.Type: GrantFiled: June 20, 1986Date of Patent: December 22, 1987Assignee: Mita Industrial Co. Ltd.Inventors: Kazumi Iida, Yosuke Ohata, Keiichiro Hyodo, Kazunori Akiyama, Tadashi Umeda, Keiichi Kishimoto
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Patent number: 4702211Abstract: An ignition timing control method for an internal combustion engine, which controls the ignition timing, on the basis of a basic ignition timing value determined as a function of operating parameters of the engine. When a detected parameter value indicative of engine temperature is lower than a predetermined value, a correction variable for the basic ignition timing value is determined based upon detected parameter values indicative of engine temperature and engine load magnitude, to correct the basic ignition timing value thereby. Ignition of the mixture is effected at a timing according to the corrected basic ignition timing value. Preferably, when detected engine rotational speed is lower than a predetermined value lower than the engine idling speed or when it is higher than a predetermined high rotational speed value, the correction of the basic ignition timing value by the correction variable is prohibited.Type: GrantFiled: January 15, 1986Date of Patent: October 27, 1987Assignee: Honda Giken Kogyo K.K.Inventors: Akira Kato, Hisashi Igarashi, Tadashi Umeda
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Patent number: 4666283Abstract: An electrostatic copying apparatus comprising a lower supporting frame, an upper supporting frame mounted on the lower supporting frame for pivotal movement between an open position and a closed position, a document placing means having a transparent plate for placing a document to be copied thereon, an optical unit and a driving source. Either the document placing means or at least a part of the optical unit is mounted reciprocally on the upper supporting frame and drivingly coupled to the driving source via a power transmission mechanism. The apparatus further includes an automatic locking means for automatically locking the document placing means or at least a part of the optical unit and cancelling the locking according to an operation of moving the upper supporting frame to an open or closed position or an operation incident to this moving operation.Type: GrantFiled: June 20, 1986Date of Patent: May 19, 1987Assignee: Mita Industrial Co., Ltd.Inventors: Kazumi Iida, Yosuke Ohata, Keiichiro Hyodo, Kazunori Akiyama, Tadashi Umeda, Keiichi Kishimoto
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Patent number: 4666285Abstract: An electrostatic copying apparatus comprising a lower supporting frame, an upper supporting frame mounted on the lower supporting frame for pivotal movement between an open position and a closed position, a document placing means having a transparent plate for placing a document to be copied thereon, an optical unit and a driving source. Either the document placing means or at least a part of the optical unit is mounted reciprocally on the upper supporting frame and drivingly coupled to the driving source via a power transmission mechanism. The apparatus further includes an automatic locking means for automatically locking the document placing means or at least a part of the optical unit and cancelling the locking according to an operation of moving the upper supporting frame to an open or closed position or an operation incident to this moving operation.Type: GrantFiled: June 20, 1986Date of Patent: May 19, 1987Assignee: Mita Industrial Co., Ltd.Inventors: Kazumi Iida, Yosuke Ohata, Keiichiro Hyodo, Kazunori Akiyama, Tadashi Umeda, Keiichi Kishimoto
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Patent number: 4635606Abstract: A fuel supply control system for an internal combustion engine, having fuel injection valves for supplying the engine with fuel having its pressure regulated to a predetermined value. A temperature sensor detects a temperature value representative of the temperature of fuel being supplied to the fuel injection valves. When the temperature value detected by the sensor is higher than a predetermined value at the start of the engine, an electronic control unit causes a solenoid-operated selector valve to operate to increase the pressure of fuel being supplied to the engine over a period of time dependent on the temperature value detected by the sensor from the time the engine is started.Type: GrantFiled: May 28, 1985Date of Patent: January 13, 1987Assignee: Honda Giken Kogyo K.K.Inventors: Akihiko Koike, Tadashi Umeda
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Patent number: 4636057Abstract: An electrostatic copying apparatus comprising a lower supporting frame, an upper supporting frame mounted on the lower supporting frame for pivotal movement between an open position and a closed position, a document placing means having a transparent plate for placing a document to be copied thereon, an optical unit and a driving source. Either the document placing means or at least a part of the optical unit is mounted reciprocally on the upper supporting frame and drivingly coupled to the driving source via a power transmission mechanism. The apparatus further includes an automatic locking means for automatically locking the document placing means or at least a part of the optical unit and cancelling the locking according to an operation of moving the upper supporting frame to an open or closed position or an operation incident to this moving operation.Type: GrantFiled: April 3, 1984Date of Patent: January 13, 1987Assignee: Mita Industrial Co. Ltd.Inventors: Kazumi Iida, Yosuke Ohata, Keiichiro Hyodo, Kazunori Akiyama, Tadashi Umeda, Keiichi Kishimoto
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Patent number: 4520354Abstract: A display for a copying apparatus includes a display element for indicating the operating conditions of the copying apparatus. The display has a number of detectors for detecting each of a group of operating conditions and an energizer for energizing the display element in response to the outputs from the detectors. The display element operates with a predetermined on-period and a predetermined off-period for each corresponding detector. The display is capable of displaying a group of operating conditions by a single display element through a group of display conditions such as being on, being off and blinking.Type: GrantFiled: June 30, 1982Date of Patent: May 28, 1985Assignee: Mita Industrial Company LimitedInventors: Tadashi Umeda, Hideo Miyoshi, Keiichi Kishimoto, Kazumi Iida, Kazunori Akiyama, Yuji Abe, Masato Taniguchi
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Patent number: 4515465Abstract: An electrostatic copying apparatus includes a paper jam detector for producing a jamming signal in response to detection of a paper jam, an emergency stopping device for stopping the copying process in response to the paper jamming signal, and a manually operable release switch for actuation after the paper jam has been cleared to release the stopping action of the emergency stopping means. A preparatory driving device, responsive to the releasing of the stopping action of the emergency stopping device by the operation of the release switch, energizes the main motor of the copying apparatus to move the photosensitive member of the apparatus through at least one rotation. A cleaning device, also responsive to releasing of the stopping action of the emergency stopping device by the operation of the release switch, cleans the photosensitive member during that rotation to assure that the photosensitive member is clean after the jam is cleared and before the next copying cycle.Type: GrantFiled: February 8, 1983Date of Patent: May 7, 1985Assignee: Mita Industrial Company LimitedInventors: Hideo Miyoshi, Tadashi Umeda, Takashi Aoki
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Patent number: 4478507Abstract: A support mount for the rotary drum of an electrostatic copying apparatus. A pair of guide and support members is positioned within the copier housing, spaced from each other a predetermined distance in the direction of the central axis of the drum. Each guide and support member has a shaft support opening with a recess extending substantially perpendicular to the drum axis and a main guide surface extending from the lower end of the recess away from the shaft support opening and substantially perpendicular to the drum axis. When the peripheral surfaces of the drum bearing members are moved along the main guide surfaces, each bearing member passes through the respective recess and is positioned within the respective support opening. A pair of projecting pieces are positioned at the side plates of a frame of the copying apparatus developing device.Type: GrantFiled: February 8, 1983Date of Patent: October 23, 1984Assignee: Mita Industrial Company LimitedInventors: Hideo Miyoshi, Tadashi Umeda, Takashi Aoki
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Patent number: 4469432Abstract: An electrostatic copying apparatus including detecting means for detecting the longitudinal size of the copying paper and a control means for operating the charging corona-discharge device only for a time period corresponding to the detected longitudinal size of the copying paper.Type: GrantFiled: February 14, 1983Date of Patent: September 4, 1984Assignee: Mita Industrial Co., Ltd.Inventors: Hideo Miyoshi, Tadashi Umeda, Takashi Aoki
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Patent number: 4469431Abstract: An electrostatic copying apparatus including detecting means for detecting the longitudinal size of the copying paper and a control means for operating the charging corona-discharge device only for a time period corresponding to the detected longitudinal size of the copying paper.Type: GrantFiled: February 14, 1983Date of Patent: September 4, 1984Assignee: Mita Industrial Co., Ltd.Inventors: Hideo Miyoshi, Tadashi Umeda, Takashi Aoki
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Patent number: 4436411Abstract: An electrostatic copying apparatus including means for developing the latent image on the photosensitive member with toner particles which are supplied from a container having a slide plate that reciprocates along the bottom of one wall of the toner container. A detecting device is connected to a feed control system and a warning device to control tones dispensing and warm of imperfect feeding.Type: GrantFiled: February 8, 1983Date of Patent: March 13, 1984Assignee: Mita Industrial Co., Ltd.Inventors: Hideo Miyoshi, Tadashi Umeda, Takashi Aoki