Patents by Inventor Masaru Tanaka
Masaru Tanaka 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: 4800411Abstract: A magnetic brush development device has a development casing housing a development sleeve for carrying a magnetic brush thereon, the development sleeve confronting an electrostatic latent image carrier such as a photosensitive drum. When the development sleeve rotates, toner carried by the development sleeve acts as a pump for air inside the development casing housing, and the pumping action of the air causes developer to be scattered out of the housing. However, according to the invention, the development casing has spaces defined therein around the development sleeve and communicating with each other to equalize pressures therein for thereby preventing developer from being scattered out.Type: GrantFiled: April 10, 1987Date of Patent: January 24, 1989Assignee: Ricoh Company, Ltd.Inventors: Masaru Tanaka, Seiji Oka
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Patent number: 4767528Abstract: A drinking water purifying apparatus for purifying water from a water service comprises an ozone generating means for producing ozonized gas, an ozone reaction means for reacting the ozonized gas from the ozone generating means with the water from a water service, and a treating means for treating the water obtained by reaction to the ozonized gas in the ozone reaction means, whereby drinking water being free from organic compounds and smelling substances and having good taste can be obtained.Type: GrantFiled: October 23, 1987Date of Patent: August 30, 1988Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Toshihiko Sasaki, Keisuke Namba, Naotoshi Matsunaga, Masayuki Tanaka, Norimitsu Ezaki, Masaru Tanaka, Hisashi Tonegawa, Naomichi Mikajiri, Hideo Motooka, Toshikazu Honda
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Patent number: 4662748Abstract: Two sets of TACs are simultaneously operated by a start pulse, one set of TACs using a photoelectron pulse due to an excited light from a sample as a stop pulse, and the other set of TACs using a photoelectron pulse due to a fluorescence from the sample as a stop pulse. Each TAC outputs a voltage proportional to the time from the start of action to the receiving of the stop pulse and an excitation light shape and a luminescence transient shape are simultaneously measured on the basis of output voltages from the TACs. A variable offset voltage is added to an output of at least one of the two sets of TACs and the excitation light shape and the luminescence transient shape are displayed on a two-picture synthetic display.Type: GrantFiled: June 19, 1985Date of Patent: May 5, 1987Assignee: Horiba, Ltd.Inventors: Masaru Tanaka, Kiyoaki Hara, Issei Yokoyama
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Patent number: 4584489Abstract: A multichannel time-voltage converter generates a plurality of output voltages which respectively corresponds to the time period between a start pulse and each of a plurality of stop pulses. A single sawtooth wave generator is utilized with a plurality of track and hold circuits so as to obviate the need for separately calibrating each of the plurality of channels of the converter.Type: GrantFiled: July 24, 1984Date of Patent: April 22, 1986Assignee: Horiba, Ltd.Inventor: Masaru Tanaka
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Patent number: 4565361Abstract: The bank notes in a bank note container are delivered one at a time by means of feed rollers and a delivery roller. The delivered bank notes are detected by sensor means. A signal from the sensor means is transferred to a control mechanism which drives or stops the delivery roller. The delivery roller is stopped and is driven again in response to a signal from an encoder carried by a supporting shaft of pull rollers. Therefore the bank notes are delivered from the bank note delivery container to the outside thereof in a predeterminedly spaced apart relationship.Type: GrantFiled: April 10, 1984Date of Patent: January 21, 1986Assignee: Fuji Giken Kabushiki KaishaInventors: Masaru Tanaka, Hideo Abe
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Patent number: 4563588Abstract: An apparatus for measuring the luminous lifetime samples, which eliminates the deviation of the time axis of each channel of a multichannel TAC, deviations resulting from differences the wiring or the time lag of the elements of each channel of the multichannel TAC constituting a principal part of the apparatus. The apparatus operates by adding a respective variable offset voltage to the output of each channel of the TAC and by regulating the offset voltage in every channel without using any delay element so as to eliminate the time axis deviations of the channels.Type: GrantFiled: December 16, 1983Date of Patent: January 7, 1986Assignee: Horiba, Ltd.Inventor: Masaru Tanaka
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Patent number: 4525069Abstract: An optical absorption analyzer for determining the concentration of low concentration components of a sample gas. Inexpensive voltage to frequency converters, up/down counters, and integrators are used to obtain a high accuracy determination which is independent of fluctuations in the strength of the light source used in the analyzer.Type: GrantFiled: April 23, 1982Date of Patent: June 25, 1985Assignee: Horiba, Ltd.Inventors: Masaru Tanaka, Naoki Noguchi, Kenji Yoshino, Osamu Saitoh
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Patent number: 4502784Abstract: An analyzer compensation circuit for compensating for the fluctuations in the intensity of the light source or for stains on the windows of cells in an analyzer. A pair of D-A converters are respectively connected to compensating and measuring light detectors. An up/down counter is arranged to count either up or down in response to the output of a comparator. The comparator compares the output of the D-A converter connected to the compensating detector with a reference value and the output of the up/down counter is connected to both of the D-A converters such that the output of the converter connected to the compensating detector is adjusted to be equal to the reference value. Since the other D-A converter is also connected to the output of the up/down counter, the output of the other D-A converter has been compensated for fluctuations in the light intensity or stains on the windows on cells used in the analyzer.Type: GrantFiled: July 23, 1982Date of Patent: March 5, 1985Assignee: Horiba, Ltd.Inventor: Masaru Tanaka
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Patent number: 4469946Abstract: A fluorescent gas analyzer for analyzing gases by the fluorescence method. A flashtube which is operated in its pulse mode is used as a light source. First and second optical detectors respectively detect light of a first and second wavelength range, the light of the first wavelength range being emitted by the light source and the light of the second wavelength range being emitted from a gas sample irradiated by the light source. A pair of integrators respectively integrate the outputs of the first and second detectors. Processing means, including sample and hold circuits and a synchronous detector, are used to further process the signals so that the system output is independent of deterioration of the light source and fluctuations in the strength of the light source output and independent of stray capacitance effects.Type: GrantFiled: April 7, 1982Date of Patent: September 4, 1984Assignee: Horiba, Ltd.Inventors: Masaru Tanaka, Naoki Noguchi, Kozo Ishida
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Patent number: 4450399Abstract: An induction motor comprises a main winding (41) and an auxiliary winding (42) wound in slots of a stator with proper intervals, the main winding (41) and the auxiliary winding (42) being connected to an alternating current voltage source (1) through a conduction control circuit (20). A control winding (9) is electromagnetically coupled to the main winding (41), with the same shunted by a capacitor (10) so that a closed loop may be formed.Type: GrantFiled: May 28, 1982Date of Patent: May 22, 1984Assignee: Sanyo Electric Co., Ltd.Inventor: Masaru Tanaka
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Patent number: 4395994Abstract: A fuel mixture heating device of an internal combustion engine having a downdraft type carburetor mounted on the collecting portion of the intake manifold. A hollow cylindrical heater vessel is arranged at the lower end of the air horn of the carburetor. The heater vessel comprises an inner pipe, an outer pipe and PTC elements inserted between the inner pipe and the outer pipe for heating the inner pipe before the completion of warm-up of the engine. The inner pipe, having an inner diameter which is almost the same as that of the air horn, is arranged to be aligned with the air horn. The outer pipe is made of a heat insulating material.Type: GrantFiled: October 23, 1980Date of Patent: August 2, 1983Assignee: Toyota Jidosha Kogyo Kabushiki KaishaInventors: Shuji Goto, Kazuyoshi Tasaka, Masaru Tanaka
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Patent number: 4395993Abstract: A fuel mixture heating device of an internal combustion engine having a downdraft type carburetor mounted on the collecting portion of the intake manifold. A hollow cylindrical heater vessel is arranged at the lower end of the air horn of the carburetor. The heater vessel comprises an inner pipe, an outer pipe and a PTC elements inserted between the inner pipe and the outer pipe for heating the inner pipe before the completion of warm-up of the engine. The inner pipe, having an inner diameter which is almost the same as that of the air horn, is arranged to be aligned with the air horn.Type: GrantFiled: October 17, 1980Date of Patent: August 2, 1983Assignee: Toyota Jidosha Kogyo Kabushiki KaishaInventors: Masaru Tanaka, Kazuyoshi Tasaka, Shuji Goto
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Patent number: 4385486Abstract: An apparatus is provided for manufacturing an open cord to be used as a reinforcement for automobile tires, conveyor belts, etc. and having uniform spaces between steel wires and stable construction.Type: GrantFiled: October 21, 1980Date of Patent: May 31, 1983Assignee: Tokusen Kogyo Kabushiki KaishaInventors: Shouji Iwata, Masaru Tanaka, Fumio Yamashita, Hideharu Kurobe, Takuo Itani
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Patent number: 4366798Abstract: A fuel mixture heating device of an internal combustion engine having a downdraft type carburetor mounted on the collecting portion of the intake manifold. A hollow cylindrical heater vessel is arranged at the lower end of the air horn of the carburetor. The heater vessel comprises an inner pipe, an outer pipe and PTC elements inserted between the inner pipe and the outer pipe for heating the inner pipe before the completion of warm-up of the engine. The inner pipe has a thin wall having a corrugated cross-section. The inner wall of the PTC elements are in contact with the outer wall of the inner pipe. An air gap is present between the outer pipe and the outer walls of the PTC elements. A plurality of plate springs is inserted between the outer pipe and the corresponding PTC elements.Type: GrantFiled: October 23, 1980Date of Patent: January 4, 1983Assignee: Toyota Jidosha Kogyo Kabushiki KaishaInventors: Shuji Goto, Kazuyoshi Tasaka, Masaru Tanaka
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Patent number: 4169450Abstract: An internal combustion engine for an automobile provided with an air conditioner which has an electromagnetic clutch capable of connecting the crankshaft of the engine with a compressor of the air conditioner. A switch mechanism is provided for engaging the clutch just after the ignition switch is opened to effectively brake the rotation of the crankshaft due to inertia by using a load of the compressor. Thus, the so-called "dieseling" can be prevented.Type: GrantFiled: March 18, 1977Date of Patent: October 2, 1979Assignee: Toyota Jidosha Kogyo Kabushiki KaishaInventors: Masaru Tanaka, Kazuyoshi Tasaka, Tetuo Tanigawa
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Patent number: 4166943Abstract: A method for welding lead wires together by twisting into a strand a plurality of lead wires of electrical parts or the like, producing an arc between the strand and a carbon electrode, thereby melting and welding the strand by the heat from the arc to obtain a weld of high quality.Type: GrantFiled: June 6, 1977Date of Patent: September 4, 1979Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masaru Tanaka, Yoshimitsu Matsumoto
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Patent number: 4091259Abstract: A method for welding lead wires together by twisting into a strand a plurality of lead wires of electrical parts or the like, producing an arc between the strand and a carbon electrode, thereby melting and welding the strand by the heat from the arc to obtain a weld of high quality.Type: GrantFiled: June 8, 1976Date of Patent: May 23, 1978Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masaru Tanaka, Yoshimitsu Matsumoto
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Patent number: 4083729Abstract: An improved hydraulic cement composition having an almost constant air content, which is incorporated with an organic phosphoric acid ester of the formula ##STR1## Wherein R.sub.1 is a group of the formula: R.sub.4 --O--(CH.sub.2 CH.sub.2 O).sub.n -- wherein R.sub.4 is an alkyl having 4 to 18 carbon atoms, an alkenyl having 4 to 18 carbon atoms or an aryl substituted with an alkyl having 4 to 18 carbon atoms and n means an average addition molar number of ethylene oxide and is an integer of 0 to 15 in average, and R.sub.2 and R.sub.3 are the same or different and are each hydroxy or a group of the formula: R.sub.4 --O--(CH.sub.2 CH.sub.2 O).sub.n -- wherein R.sub.4 and n are as defined above, or a salt thereof with an inorganic or organic base, as an air entraining agent, optionally together with a dispersing agent and an accelerator.Type: GrantFiled: February 2, 1977Date of Patent: April 11, 1978Assignees: Fujisawa Pharmaceutical Co., Ltd., Dai-Ichi Kogyo Seiyaku Co., Ltd.Inventors: Senri Yamada, Kanji Nagasawa, Tokiaki Mori, Masaru Tanaka
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Patent number: 3935530Abstract: An AC voltage regulator which detects the instantaneous supply voltage in a phase shifter and compares it with the reference voltage by a comparator circuit so that in response to the output signals from the comparator, the firing angle of the thyristors connected to a supply voltage circuit may be controlled in order to maintain constant the effective load current.Type: GrantFiled: May 24, 1972Date of Patent: January 27, 1976Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masaru Tanaka, Yoshimitsu Matsumoto, Takeshi Oku