Patents Represented by Law Firm Craig & Antonelli
  • Heat sensitive recording system
    Patent number: 4342040
    Abstract: A heat sensitive recording system including a head base for mounting thereon a heat sensitive recording head formed at opposite end portions thereof with guide notches for having a shaft of a pressing roller engaged therein, to automatically bring the generatrix of the pressing roller into alignment with a heat generating resistance layer extending in a straight manner on the heat sensitive recording head when the head and the roller are brought into contact with each other.
    Type: Grant
    Filed: August 25, 1980
    Date of Patent: July 27, 1982
    Assignee: Hitachi, Ltd.
    Inventors: Yoshio Fujita, Kiyoshi Hosoya
  • Production of bindings of fiber bundles
    Patent number: 4341065
    Abstract: This invention relates to a method and an apparatus for avoiding untwisting during the formation of a binding of two fiber bundles. The rotational direction of deformation members acting on the fiber bundles is selected to be different in different groups of deformation members in order to reproduce or to increase the original twist during the binding operation.
    Type: Grant
    Filed: June 8, 1981
    Date of Patent: July 27, 1982
    Assignee: Zellweger Uster Ltd.
    Inventors: August Baumgartner, Martin Plaschy
  • Method of manufacturing semiconductor device
    Patent number: 4341011
    Abstract: A method of manufacturing a semiconductor device comprising preparing a semiconductor substrate which includes at least three semiconductor layers of alternately different conductivity types and in which one of the semiconductor layers is divided into a plurality of respectively independent regions on each of which an electrode film is provided. When one of the regions of the semiconductor layer is found defective, a substantial portion of the electrode film provided on the defective region is removed by trimming to lower the surface level of the electrode film relative to the others.
    Type: Grant
    Filed: October 3, 1980
    Date of Patent: July 27, 1982
    Assignee: Hitachi, Ltd.
    Inventors: Sadao Okano, Hideo Homma
  • Elevator control apparatus
    Patent number: 4341287
    Abstract: An elevator control apparatus in which a three-phase AC output from a three-phase AC generator rotating with running movement of an elevator car is converted into a train of pulses, and the number of such pulses is counted by a counter which provides a count indicative of the position of the elevator car. When the elevator car is actuated to start from its standstill condition, the running direction of the elevator car is detected on the basis of the direction of phase rotation of the three-phase AC output from the generator, and a predetermined correction data is added to or subtracted from the count depending on the detected running direction of the elevator car so as to correct the count error appearing in the starting stage of the elevator car.
    Type: Grant
    Filed: April 14, 1980
    Date of Patent: July 27, 1982
    Assignee: Hitachi, Ltd.
    Inventors: Soshiro Kuzunuki, Kotaro Hirasawa, Masumi Imai, Takeo Yuminaka, Kazuhiro Sakata, Kanji Yoneda
  • Piezoelectric crystal element for use in force, pressure and acceleration transducers
    Patent number: 4341974
    Abstract: A piezoelectric crystal element for use in force and pressure transducers and accelerometers, consisting of a monocrystalline cubic-polar material with electrode faces that intersect one of the crystallographic principal axes X,Y,Z at an angle .alpha.'=arc sin .sqroot.p and the other principal axes at .beta.'=.+-.1/2 arc cos p, wherein p=0 for the piezoelectric orthoaxial shear effect, p=1/3 for the longitudinal piezoeffect and p=1 for the transverse piezoeffect.
    Type: Grant
    Filed: May 28, 1980
    Date of Patent: July 27, 1982
    Assignee: Kistler Instrumente AG
    Inventor: Reto Calderara
  • Guide arrangement for a safety belt
    Patent number: 4341359
    Abstract: A guide device for a safety belt of a safety belt system for a motor vehicle. A delivery roll is provided from which and onto which the safety belt is wound in a region of the downstream deflector fitting, whereby the guide device, as viewed in a pull out or withdrawal direction of the safety belt, is upstream of a deflector crosspiece of the deflector fitting and is fastened together with the deflector fitting. A guide slot is provided that is narrower than a doubled thickness of the safety belt with a free end of the guide device presenting a runner for the safety belt which runner defines the guide slot with the free end of the guide device.
    Type: Grant
    Filed: April 21, 1980
    Date of Patent: July 27, 1982
    Assignee: Daimler-Benz Aktiengesellschaft
    Inventor: Walter Jahn
  • Air intake system for a multi-cylinder internal combustion engine
    Patent number: 4341186
    Abstract: An air intake system for a multi-cylinder internal combustion engine, especially an internal combustion engine with fuel injection, the intake system including a multi-partite distributor housing to which are connected first and second individual intake pipes with openings thereof lying in mutual opposition within the distributor housing. The distributor housing is divided in an area of the openings of the intake pipes at least in sections in the longitudinal direction of the individual intake pipes. Auxiliary pipes emanate from the openings of the intake pipes and are arranged in a mutually overlapping relationship in the distributor housing so that a simple and compact construction is realized with the possibility of having auxiliary pipes with great lengths within the distributor housing.
    Type: Grant
    Filed: April 7, 1980
    Date of Patent: July 27, 1982
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Bertold Mayr, Jiri Seidl
  • Armature of electric rotating machine
    Patent number: 4341971
    Abstract: At least one circumferential slot is provided at a predetermined axial position on an armature core so as to cross axial slots receiving a plurality of coil sides of an armature winding and to communicate adjacent axial slots, and the plurality of coil sides to be generally mounted in the same axial slot are partially shifted from one slot to an adjacent one through the circumferential slot so that the coil sides of the armature winding are partially arranged to extend through adjacent slots at a fixed, predetermined circumferential distance. In this manner, the generation of commutating spark is substantially prevented and the commutating performance is improved.
    Type: Grant
    Filed: November 18, 1980
    Date of Patent: July 27, 1982
    Assignee: Hitachi, Ltd.
    Inventors: Kazuo Tohara, Seizi Yamashita, Takayuki Matsui, Shoji Motegi, Noriyoshi Takahashi
  • Liquid crystal display element and production thereof
    Patent number: 4341445
    Abstract: A liquid crystal display element characterized by having an orientation controlling film containing a uniformly dispersed spacer therein on one inside surface of electrode substrates shows only a slight deviation in changes of the distance between the two electrode substrates even in the case of a large-size element. Such a liquid crystal display element can be produced by coating a mixture of a film forming material, a spacer and a solvent on one surface of an electrode adhered to one substrate, dried and baked, followed by conventional display element producing procedures.
    Type: Grant
    Filed: April 1, 1980
    Date of Patent: July 27, 1982
    Assignee: Hitachi, Ltd.
    Inventors: Shigeru Matsuyama, Masaharu Koyama, Yukihiro Sato
  • Electrical resistance heating element
    Patent number: 4341946
    Abstract: In an electrical resistance heating element (1) comprising a heating conductor support (3) of insulating material and a heating conductor (4) of resistance wire wound in meander or sinuously coiled manner with loop ends or bights (6) and loop legs or runs (8), the loops of the heating conductor (4) being arranged substantially in a single plane, and the inner loop ends (6) which are directed towards the heating conductor support (3) being situated in the edge region of the heating conductor support (3), it is proposed according to the invention to construct the heating conductor support (3) as a flat plate, the flat plate to be situated substantially in the same plane as the loops of the heating conductor (4). It is also proposed that the outer loop ends or bights (5) remote from the heating conductor support (3) are to be self-supporting and not secured.
    Type: Grant
    Filed: November 3, 1980
    Date of Patent: July 27, 1982
    Assignee: Fritz Eichenauer GmbH & Co. KG
    Inventors: Helmut Ohnmacht, Klaus Meywald
  • Power supply system
    Patent number: 4340931
    Abstract: A power factor improving system for a power supply system, comprising an AC power supply, a rectifier circuit connected to the AC power supply, a smoothing circuit for smoothing the output current of the rectifier circuit and supplying DC power to the load, an inductance element inserted in series between the power supply and the rectifier circuit, switching means including a switching element and a rectifier element inserted between the AC input terminal of the rectifier circuit and one of the DC output lines thereof, and a control circuit for subjecting the switching element of the switching means to on-off control at a frequency higher than the frequency of the AC power supply.
    Type: Grant
    Filed: November 28, 1980
    Date of Patent: July 20, 1982
    Assignee: Hitachi, Ltd.
    Inventors: Tsunehiro Endo, Humio Tazima
  • Voice frequency response system
    Patent number: 4340783
    Abstract: A voice frequency response system comprising a subscriber's terminal unit including both a functional part functioning as a telephone and a functional part functioning as a facsimile receiver, a voice frequency response device including a functional part functioning as a facsimile response unit, and a telephone line connected between the terminal unit and the voice frequency response device. The voice frequency response device comprises a voice frequency response unit transmitting a required message to the telephone in response to a demand for voice frequency response service from the telephone in the terminal unit, and a facsimile response unit transmitting necessary information in the message or other information including the necessary information to the facsimile receiver in the terminal unit.
    Type: Grant
    Filed: June 13, 1980
    Date of Patent: July 20, 1982
    Assignee: Hitachi, Ltd.
    Inventors: Tomonori Sugiyama, Akio Suehiro
  • Method of making rotor of rotary machines
    Patent number: 4339873
    Abstract: A rotor of a rotary machine, having a core member consisting of a plurality of hollow pieces, and a rotary shaft which is inserted and secured in a hollow portion of said core member, wherein annular grooves having ruggid bottom are formed in said rotary shaft at positions slightly inside the end surfaces of said core member, and portions of said core member are inserted in said grooves so that said rotary shaft and said core member are fastened together.
    Type: Grant
    Filed: February 27, 1980
    Date of Patent: July 20, 1982
    Assignee: Hitachi, Ltd.
    Inventors: Hisanobu Kanamaru, Moisei Okabe, Hideo Tatsumi, Akira Tohkairin, Ryoji Kasama
  • Dual mapping memory expansion unit
    Patent number: 4340932
    Abstract: In a unified bus data processing system, a memory expansion unit is connected to the bus to convert bus addresses into addresses in a physical memory which may be many times larger than the maximum size that the bus would have been capable of addressing previously. Thus, the memory expansion unit provides directly addressable memory locations which serve to expand the range of physical addresses allocated to the bus by selectively connecting a plurality of expansion memory units to said bus. The memory expansion unit is programmed to convert groups of bus addresses into the same size group of addresses anywhere in physical memory. Until the memory expansion unit is programmed, physical memory is directly addressable by the central processing unit by applying the appropriate bus address and the normal control signals thereto.
    Type: Grant
    Filed: May 17, 1978
    Date of Patent: July 20, 1982
    Assignee: Harris Corporation
    Inventors: Richard E. Bakula, Dennis L. Maly, James H. Weemhoff
  • Speech analysing device
    Patent number: 4340781
    Abstract: Computation of the partial correlation coefficients (PARCOR K.sub.i) of a signal, using less cascaded hardware, is implemented by first deriving a sequence of auto-correlation coefficients (v.sub.j) which are then transformed into a sequence of K.sub.i using a single section digital filter plus recirculating circuitry for data iteration.
    Type: Grant
    Filed: April 30, 1980
    Date of Patent: July 20, 1982
    Assignee: Hitachi, Ltd.
    Inventors: Akira Ichikawa, Kazuo Nakata, Akira Nakajima, Yoshihiro Ohta, Kazuhiro Umemura
  • D/A Conversion system with compensation circuit
    Patent number: 4340882
    Abstract: A D/A conversion system with a compensation circuit comprises a D/A converter for converting a digital input signal into an analog signal and a memory for storing a compensation data used for the compensation of the output of the D/A converter at an address corresponding to the digital input signal. The digital input signal is applied to the D/A converter and a signal corresponding to the digital input signal is applied to the memory. The output of the D/A converter is adjusted on the basis of the compensation data read out from the memory.
    Type: Grant
    Filed: March 23, 1978
    Date of Patent: July 20, 1982
    Assignees: Nippon Telegraph and Telephone Public Corporation, Hitachi, Ltd.
    Inventors: Kenji Maio, Tsuneta Sudo
  • Tank closure arrangement
    Patent number: 4339055
    Abstract: A tank closure, especially for a tank of a motor vehicle, with a bayonet cap having a pair of tension clamps. The tension clamps, during a rotation of the cap, are axially displaceable through the bayonet-type thread at the tank neck and are urged against the thread by a helical compression spring. The spring rests on a bracket of a closing pipe guided in a housing of the cap and joined thereto so that the spring urges the closing pipe, especially a flange associated therewith and covered with a sealing ring of rubber or the like, elastically resilient material onto an annular sealing surface of the tank neck. A self-lubricating synthetic resin spacer sleeve, that is, a sleeve which readily slides on metal, is inserted between the flange of the closing pipe and the pair of tension clamps.
    Type: Grant
    Filed: February 17, 1981
    Date of Patent: July 13, 1982
    Assignee: Daimler-Benz Aktiengesellschaft
    Inventor: Rolf Hutzenlaub
  • Method of adjusting a given pretension in threads on tensile strength testing apparatus and the like
    Patent number: 4338824
    Abstract: A method of adjusting a given pretension in threads on tensile strength testing apparatus. A force measuring device is used as an adjusting member for the pretension, from where the tensile load increases and the elongation thereby appearing is measured. The loose thread inserted into the thread clamp is either pretensioned by means of a movable testing clamp, or the thread is stretched by a transport device until the force measuring device indicates the given pretension value.
    Type: Grant
    Filed: July 1, 1980
    Date of Patent: July 13, 1982
    Assignee: Zellweger, Ltd.
    Inventors: Peter Brassel, Rudolf Zingg
  • Delay circuit constituted by MISFETs
    Patent number: 4339672
    Abstract: A delay circuit includes first and second MISFETs and a capacitance element connected to the common juncture of the first and the second MISFETs. The electricity of the capacitance element is charged through the first MISFET and is discharged through the second MISFET. Since the first and the second MISFETs effectively perform a push-pull operation, a signal of a predetermined level and a predetermined delay time to be delivered to a circuit having a logic threshold voltage is derived from the common juncture.
    Type: Grant
    Filed: July 12, 1979
    Date of Patent: July 13, 1982
    Assignee: Hitachi, Ltd.
    Inventor: Katsuyuki Sato
  • Desalting method of fuel oil
    Patent number: 4339330
    Abstract: The present invention provides a method for the desalting of fuel oil by mixing the fuel oil and clean water, thereby separating and eliminating sodium salts and potassium salts contained in the fuel oil, and the method comprises separating a heavy portion including salt-containing water from the fuel oil which is a light portion, this heavy portion separated from the fuel oil being separated into water and a residue by an evaporator, the water being reused as a washing water and the residue being burnt to use the generated heat as a heat source for the evaporator, whereby the residue is decreased in volume and solidified to be made easy in the handling.
    Type: Grant
    Filed: August 26, 1980
    Date of Patent: July 13, 1982
    Assignee: Hitachi, Ltd.
    Inventors: Kiyoshi Fujiwara, Katsuaki Nagatomo, Fumio Shibata, Shoji Nomura, Shoji Yoshinaga