Patents Assigned to Matsushita Electric Industrial Co., Ltd.
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Patent number: 4412099Abstract: In this speech synthesizer which announces the time, storage and complexity is minimized by switching selection of fixed data and variable data from corresponding memories, to compose the phrase "the time is five o'clock".Type: GrantFiled: May 15, 1981Date of Patent: October 25, 1983Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Katsuyuki Niyada, Taisuke Watanabe, Shoji Hiraoka, Shuji Morii
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Patent number: 4412113Abstract: In a push-on switch comprising a moving contact 6 of partial-hemisphere-face-shaped resilient metal diaphragm which is disposed with its periphery on a pair of peripheral fixed contacts 2b,2b in a contacting manner and at its central part apart above a central fixed contact 2a in an isolated manner at normal state,the improvement is made such that the metal diaphragm moving contact 6 has an opening 6a having at least a protrusion 6b with respect to the opening 6a;so that the opening 6a allows air to pass at inversing and restoring motions of the central principal part of the moving contact 6, thereby preventing drafting of dust onto the central fixed contact 2a, and that the protrusion 6b slides on and cleans the surface of the central fixed contact 2a at each pushing down of the central part of the moving contact 6.Type: GrantFiled: August 4, 1982Date of Patent: October 25, 1983Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Itaru Mitsugi, Shunzo Oka, Yoshinobu Nakagawa, Kenichi Shiho
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Patent number: 4412351Abstract: A microwave mixing circuit comprises a main transmission line having an input port for receiving an input high frequency and an output port, a band pass filter responsive to a local oscillation frequency, first and second band stop filters, and a mixing diode connected to the output port. The local oscillation frequency applied via the band pass filter to the main transmission line is prevented from being transmitted toward the input port because of the first band stop filter, while an image frequency produced by the diode is reflected by the second band stop filter to be applied to the diode.Type: GrantFiled: October 23, 1981Date of Patent: October 25, 1983Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroshi Onishi, Sadahiko Yamashita, Mitsuo Makimoto
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Patent number: 4411982Abstract: A disclosed method of continuous making flexible printed circuits for use in radio set or the like appliances, includes punching holes in a continuous copper-film clad insulating substrate, forming photopolymer films on the faces of the copper films exposing the photopolymer film to photochemical light of a predetermined pattern, developing the exposed photopolymer film, etching the copper film utilizing remaining parts of the photopolymer film as etching masks, removing the remaining photopolymer films 40 and printing solder-resist films on selected parts. The improvement is to provide and retain selected oblong parts of said conductor metal film disposed on and parallel to longitudinal direction of the continuous substrate by, for example, covering these parts by etching-resist films.Type: GrantFiled: January 12, 1982Date of Patent: October 25, 1983Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Chuji Shibuya, Satoshi Kaneda, Takashi Kanehisa, Masatoshi Kondo, Kenji Nogawa, Fumio Hasuike
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Patent number: 4410979Abstract: A multiplexed signal receiver is arranged such that two independent signals are multiplexed on a single carrier by amplitude and frequency modulation or amplitude and or phase modulation. The multiplexed signal receiver includes a balanced type amplitude limiter and two double balanced type product detectors for amplitude and frequency or amplitude and phase demodulation. The receiver uses the direct coupling between said amplitude limiter and the two product detectors to facilitate the circuit integration thereof on a monolithic semiconductor chip.Type: GrantFiled: March 11, 1981Date of Patent: October 18, 1983Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kenzo Tanabe, Yasuhiro Okada
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Patent number: 4410939Abstract: A plurality of registers included in a central processing unit are electrically divided into a plurality of register-sets which are arranged in a given order to be used as a stack where one of the register-sets at the top of stack is normally used for executing the program of a main routine. In one embodiment, the data of the register-sets are pushed down for executing interrupt service routines and then popped up for resuming the suspended program. When all of the register-sets are loaded, the data may be saved in a saving region of a main memory, and the saved data may be directly transferred to the top register-set when needed. In another embodiment, actual push down and popping up of data are not performed but one of the register-sets is selectively enabled so that the register-sets function as a stack.Type: GrantFiled: July 16, 1980Date of Patent: October 18, 1983Assignee: Matsushita Electric Industrial Co. Ltd.Inventor: Katsura Kawakami
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Patent number: 4410795Abstract: A heating apparatus, or more particularly a heating-time displaying means which is applicable for a heating apparatus with a programmable timer which is capable of controlling the sequence heating. The heating apparatus comprises heating sources such as magnetron and/or heater for heating a product to be heated, output switching means for switching the output of said heating source into at least two steps, output setting means for presetting the output specified by said output switching means, timer means for controlling the heating time, heating time setting means for presetting the heating time to said timer means, a memory for storing the output and heating time entered by said output setting means and said heat time setting means, display means for displaying the entered output and heating time, and a main controller for controlling said heating source and said memory and all of said means, and stage recall means for recalling the heating pattern of a selected stage.Type: GrantFiled: February 3, 1982Date of Patent: October 18, 1983Assignee: Matsushita Electric Industrial Co., Ltd.Inventor: Shigeki Ueda
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Patent number: 4410280Abstract: The present invention relates to an electric food preparation apparatus such as a food processor, juicer or the like. An annular cavity is formed in the fitting portion between the container body and the container lid. The annular cavity is communicated with the interior of the container body through communication passages. Fluid guiding members are disposed at the upstream side of respective communication passages to generate negative pressure in the respective communication passages. The liquid leaking outside is induced back into the container body through the communication passages so that external leaking of the liquid is prevented.Type: GrantFiled: July 1, 1981Date of Patent: October 18, 1983Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Terukazu Yamauchi, Hirofumi Nakakura
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Patent number: 4409448Abstract: A pull-push switch has one or two stationary contacts and one U-shaped elastic movable contact with two legs which, when not deformed, are adapted to resiliently make into contact with the stationary contacts. A cam is securely mounted on an operating shaft which can be axially shifted between the pulled and pushed positions. The cam has a small-diameter cylindrical portion contiguous with a tapered intermediate portion which in turn is contiguous also with a large-diameter cylindrical portion. The legs of the elastic movable contact are so positioned that they are normally maintained in contact with the peripheral surface of the cam as it is shifted in unison with the operating shaft so that when the shaft is pushed or pulled, the legs of the elastic movable contact rest on the small-diameter cylindrical portion of the cam and subsequently make contact with the stationary contacts, whereby the switch is closed.Type: GrantFiled: October 29, 1981Date of Patent: October 11, 1983Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroshi Matsui, Kazuo Sakami, Matsuo Nishioka, Takashi Onizawa
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Patent number: 4409632Abstract: A magnetic head arrangement includes a spiral coil made of a thin layer and having a central opening. The spiral coil is deposited on a first layer of magnetic material in an electrically insulated manner. The arrangement further includes a second layer of magnetic material having a width wider than that of the central opening of the spiral coil and deposited on the spiral coil in an electrically insulated manner. A portion of the second layer located in the central opening of the spiral coil is magnetically connected with the first layer and another portion of the second layer located outside the spiral coil is held above the first layer to form a predetermined gap.Type: GrantFiled: November 19, 1980Date of Patent: October 11, 1983Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kenji Kanai, Nobuyuki Kaminaka, Norimoto Nouchi, Noboru Nomura
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Patent number: 4409567Abstract: A surface acoustic wave (SAW) device includes a SAW element disposed on a printed circuit. The printed circuit has an insulation substrate having input and output wiring conductors and input side and output side grounding conductors formed thereon. Interdigital transducers of the SAW element are connected to the input and output wiring conductors. The input side grounding conductors and the output side grounding conductors are disposed apart from each other with an isolation gap inbetween, thereby obtaining desirable filtering characteristics by suppressing undesirable coupling between input side and output side caused by a feed through electromagnetic wave.Type: GrantFiled: December 24, 1980Date of Patent: October 11, 1983Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kentaro Setsune, Toshihide Tanaka
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Patent number: 4408966Abstract: A pump for forcedly feeding kerosene or like fluid comprises a rotor, a housing rotatably accommodating the rotor, a stator for forming a rotary magnetic field to rotate the rotor, and a fluid feeding portion. When the rotor is a disk, spiral grooves providing the feeding portion are formed in the rotor and/or a housing wall opposed to the rotor. When the rotor is tubular, a helical groove or grooves are formed in the outer surface of a fixed shaft serving as part of the housing and/or in the inner peripheral surface of the rotor to provide the feeding portion. The pump properly feeds the fluid at widely varying flow rates including a very small rate free of any leak and without producing a loud noise. The pump, including a motor as a component, is compact, thin and simple in construction.Type: GrantFiled: December 19, 1980Date of Patent: October 11, 1983Assignee: Matsushita Electric Industrial Co., Ltd.Inventor: Teruo Maruyama
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Patent number: 4407078Abstract: A drive system for rotary drum type drying apparatus including an axial air-gap induction motor mounted in the substantially central portion of a rear surface member of an outer case containing a rotary drum, a blower mounted on a rotor or a rotor shaft of the motor, and a speed reduction gear unit having an input connected to the rotor shaft and an output connected to the central portion of a rear wall of the rotary drum for rotating the rotary drum by transmitting the torque of the motor thereto while reducing the rotational speed. The structural arrangement that the motor, the blower fan, the speed reduction gear unit and the rotary drum are aligned with one another by the rotor shaft permits the drying apparatus to have an overall compact size while minimizing the number of necessary components parts and enabling the drying apparatus to be used in a long service life.Type: GrantFiled: June 8, 1981Date of Patent: October 4, 1983Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kojiro Takeyama, Toru Shimotake
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Patent number: 4408236Abstract: A magnetic tape recording and/or reproducing apparatus wherein a magnetic tape is drawn out of a tape cartridge by a tape loading mechanism which is moved from its inoperative position to its operative position by the rotational power of a motor, and which motor also drives an operating mode changing mechanism which changes the operating mode of the apparatus.Type: GrantFiled: January 30, 1981Date of Patent: October 4, 1983Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Shigeki Murata, Jirou Kajino, Hitoshi Minabe
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Patent number: 4408253Abstract: A variable capacitor, wherein at least one of its stator or rotor electrode is made of aluminum alloy or copper alloy and coated with a thin dielectric material layer containing fluorocarbon resin as its principal component by means of baking, is disclosed. The disclosed variable capacitor is particularly suited for a miniaturization of an appliance which adopts this variable capacitor. Careful qualification of the electrode materials, dielectric material, additional dielectric substance, and conditions for performing the baking and layer forming operation prevent the formation of the oxide film over the surface of the electrode material, and thus ensures a firm adherence of the layer to the substrate and a large maximum capacitance of the layer.Type: GrantFiled: May 7, 1981Date of Patent: October 4, 1983Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Atsushi Nishino, Tadashi Suzuki, Masaki Ikeda, Tadashi Ohtani
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Patent number: 4407552Abstract: A connector unit, which comprises an insulating housing carrying a plurality of connection pins planted therethrough and accommodating a dielectric plate formed with through-holes penetrated by the connection pins and provided on both sides with electrodes. Thus, a capacitor is connected between each connection pin and earth, so that the connector unit is capable of preventing external interference waves from being introduced through the connection pins into the electric apparatus and also preventing spurious waves generated within the electric apparatus from radiation to the outside through the connection pins.Type: GrantFiled: June 21, 1982Date of Patent: October 4, 1983Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masayuki Watanabe, Hiroshi Yamaya, Hitoshi Kurohata
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Patent number: 4408143Abstract: The video image display apparatus of flat tube type comprisinga phosphor screen, an electron beam source having a predetermined number (15) of line cathodes for inturn emitting said predetermined number of horizontal rows of electron beams, each row having a second predetermined number (320) of rod shaped electron beams for together producing one horizontal line of image on said phosphor screen,a horizontal deflection means for horizontally deflection of the electron beams to selectively emit red, green or blue phosphor stripes,a vertical deflection means for vertical deflections of the electron beams of the horizontal rows, thereby to vertically move one of the horizontal line in the vertically divided segment,wherein red, green and blue color signals are time sequentially sampled by sets of three sampling signals of time sequential relation, and the sampled color signals are impressed on the horizontal deflection means, andthereby, hitherto poor horizontal resolution is much improved as if the sampling freqType: GrantFiled: June 10, 1982Date of Patent: October 4, 1983Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Shizuo Inohara, Mitsuya Masuda, Sadahiro Iyehara, Minoru Ueda, Keisuke Yamamoto
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Patent number: 4407914Abstract: An alkaline galvanic cell including a container serving for a cathode terminal, a sealing plate in the form of a layered clad plate serving for an anode terminal to be fitted into the container, and an insulating packing provided between the sealing plate and container for sealing the cell upon assembly. The cell is provided with a layer of epoxy adduct polyamide amine having amine valence in the range of 50 to 400 and disposed between the innermost copper layer of the sealing plate arranged to be readily amalgamated and the insulating packing so as to serve as a sealing agent or liquid leakage suppression agent.Type: GrantFiled: December 21, 1981Date of Patent: October 4, 1983Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Takao Inoue, Tamotsu Wakahata, Keigo Momose, Yukio Maeda
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Patent number: 4407639Abstract: A compressor having a rotor, a cylinder rotatably accommodating the rotor, vanes slidably mounted on the rotor, side plates secured to both sides of the cylinder so as to close both open ends of cylinder chambers defined by the cylinder, rotor and the vanes, a suction port and a discharge port for a refrigerant, and a temperature-sensitive valve disposed in the passage communicating with the suction port and adapted to open and partially close the suction port. Representing the rotating angle of the rotor between the position at the beginning of the suction stroke and the position at completion of the suction stroke by .theta..sub.s rad., the volume of the cylinder chamber at the position of completion of the suction stroke by Vo cc, and the effective area of the suction passage between the evaporator and the cylinder chamber in the opening state of the temperature-sensitive valve by a.sub.2 (.theta.) cm.sup.2 ; the means value a.sub.Type: GrantFiled: January 22, 1982Date of Patent: October 4, 1983Assignee: Matsushita Electric Industrial Co., Ltd.Inventor: Teruo Maruyama
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Patent number: 4406804Abstract: The heat accumulating material provided according to this invention makes use of the latent heat of fusion of sodium acetate trihydrate, and it comprises, as blended in a system consisting of sodium acetate and water, at least one nucleation catalyst selected from the group of compounds consisting of tetrasodium pyrophosphate, trisodium monohydrogenpyrophosphate, disodium dihydrogenpyrophosphate and monosodium trihydrogenpyrophosphate. In use of this heat accumulating material, the sodium acetate trihydrate would not be overcooled owing to the overcooling preventing function of the nucleation catalyst but is unfailingly crystallized at a temperature close to the fusion point thereof to radiate latent heat of fusion. The overcooling preventing performance of the nucleation catalyst is not deteriorated even if it is subjected to more than 1,000 cycles of repetition of fusion and solidification, and thus the heat accumulating material maintains a very stabilized heat absorbing and radiating capacity.Type: GrantFiled: September 21, 1981Date of Patent: September 27, 1983Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Takahiro Wada, Shoichi Ishihara, Ryoichi Yamamoto