Patents Represented by Attorney Sixbey, Friedman, Leedom & Ferguson, PC
  • Patent number: 6036194
    Abstract: A combustion seal for sealing high pressure combustion gas within at least one cylinder of an internal combustion engine including a cylinder block, a cylinder head having a groove formed in its bottom face, a cylinder liner having a complementary groove formed in its top face, and a O-ring formed from a ductile material and positioned between and contacting each edge of the groove formed in the cylinder head and the complementary groove formed in the cylinder liner, wherein the O-ring is compressed when the cylinder head is secured on the cylinder such that the O-ring has multiple radial restraint points of contact with the edges. When securing the cylinder head onto the cylinder block, the O-ring is positioned between the grooves in the cylinder head and cylinder liner before a compressive force is applied.
    Type: Grant
    Filed: September 3, 1997
    Date of Patent: March 14, 2000
    Assignee: Cummins Engine Company, Inc.
    Inventor: Billy L. Stamper
  • Patent number: 6036449
    Abstract: A system and method for air compressor control wherein the air compressor is loaded only when engine activities require it to be loaded or when free engine power is available to operate the compressor. An air compressor system is an engine-driven, piston-type compressor which operates in a loaded and an unloaded mode and provides air to a vehicle's air powered devices, such as service brakes, air suspension, windshield wipers, etc. The operating mode of the compressor is controlled by a pressure activated air governor which applies an air signal when pressure in a reservoir reaches a set level that activates a cap valve on an unloader stopping the air compressor. When the air pressure in the reservoir drops below a lower set pressure or when energy is "free," such as during downhill operations, the air governor exhausts the air signal allowing the air compressor to resume operation.
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: March 14, 2000
    Assignee: Cummins Engine Company, Inc.
    Inventors: Dipchand V. Nishar, Thomas A. Dollmeyer, Christopher R. Nelson
  • Patent number: 6032637
    Abstract: An engine control system for controlling operation of an engine of a type injecting fuel directly into a combustion chamber in different injection modes according to engine operating conditions has a map of engine control values with respect to specified engine operating conditions at intersection points of a grid pattern in which engine control values at extreme intersection points adjacent to a boundary between adjacent injection modes is discontinual. The engine control system calculates an engine control value for an engine operating condition by interpolation with the aid of engine control values at the intersection points and determines an engine control value for an engine operating condition at a point closer to the boundary than the extreme intersection point of one injection mode based on engine control values at intersection points of the one injection mode only.
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: March 7, 2000
    Assignee: Mazda Motor Corporation
    Inventors: Kiyotaka Mamiya, Michihiro Imada, Masayuki Tetsuno
  • Patent number: 6033973
    Abstract: A halogen fluoride such as ClF.sub.3 is introduced into the chamber of the doping system. During the doping process, boron adhering to the inner wall of the chamber is changed into gaseous boron fluoride (such as BF.sub.3) and driven off.
    Type: Grant
    Filed: December 5, 1995
    Date of Patent: March 7, 2000
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Yasuhiko Takemura
  • Patent number: 6030311
    Abstract: A control system for a toroidal type continuously variable transmission which incorporates a toroidal continuously variable gear mechanism comprising an input and an output toroidal disk and a roller disposed between the input and output toroidal disks and continuously varies a gear ratio according to inclinations of the roller actuates a stepping motor, when a specific driving condition which causes the continuously variable transmission to switch between a first and a second control mode and directional reversal of torque transmission through the toroidal continuously variable gear mechanism occurs with a result of causing a shift of the roller from one side to another side of the neutral position, to operate a double-slider shift valve to cause the shift of the roller in advance.
    Type: Grant
    Filed: August 25, 1998
    Date of Patent: February 29, 2000
    Assignee: Mazda Motor Corporation
    Inventor: Toshihiko Osumi
  • Patent number: 6030277
    Abstract: A method for accurately and economically shaping a zirconia workpiece with a relatively inexpensive silicon carbide grinding wheel is provided. The grinding wheel used in the method preferably utilizes 220 mesh silicon carbide particles bound in a low porosity vitreous matrix. The grinding wheel is then rotated at a sufficient speed to implement a grinding operation, and is engaged against the zirconia workpiece at a diametral feed rate of at least 0.04 mm/sec. The method advantageously removes material from the zirconia workpiece at a high rate of speed with minimal wheel wear, and results in accurate cuts and smooth surface finishes, and also eliminates the need for dressing the wheel prior to the grinding operation.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: February 29, 2000
    Assignee: Cummins Engine Company, Inc.
    Inventors: Albert J. Shih, Thomas M. Yonushonis
  • Patent number: 6030869
    Abstract: A method for fabricating a nonvolatile semiconductor memory device having a stacked gate portion, including a tunnel insulating film, a floating gate electrode, a capacitive insulating film and a control gate electrode, formed over a p-type Si substrate. In the p-type Si substrate, n.sup.++ source/drain layers and n.sup.+ source/drain layers, each layer containing arsenic, are formed. In the drain region, an n.sup.- drain layer, containing phosphorus and overlapping with an entire edge of the stacked gate portion in the gate width direction, and a p layer surrounding the bottoms of the n.sup.+ and the n.sup.- drain layers are provided. In such a structure, an electric field applied between the floating gate electrode and the drain is weakened and the drain-disturb characteristics are improved during writing.
    Type: Grant
    Filed: September 23, 1998
    Date of Patent: February 29, 2000
    Assignee: Matsushita Electronics Corporation
    Inventors: Yoshinori Odake, Takashi Maejima, Hidenori Tanaka, Mitsuyoshi Andou, Toshimoto Kubota
  • Patent number: 6030111
    Abstract: Molding sand of a used greensand mold is recycled by adding water and binder to sand particles fatigued by heating applied by a molten metal during molding and segregated from vigorous molding sand not directly heated by the molten metal and mixing the refreshed molding sand particles with the vigorous molding sand.
    Type: Grant
    Filed: March 10, 1998
    Date of Patent: February 29, 2000
    Assignee: Mazda Motor Corporation
    Inventors: Minoru Tokuyoshi, Toshisaburo Kimura, Takashi Suginaka
  • Patent number: 6029913
    Abstract: A swirl tip injector nozzle housing is provided for a fuel injector which includes a fuel atomization enhancing feature for creating effective fuel atomization and breakup during discharge from the injector. The fuel atomization enhancing feature includes a plurality of curvilinear spray holes having an angle of curvature equal to approximately 90 degrees. Fuel flowing from the inlet of each spray hole to the outlet is induced, by the 90 degree angle of curvature, to flow through a tangential flow path or swirl within the spray hole causing rapid spreading and breakup of the fuel jet spray upon exiting the outlet of the spray hole. The fuel atomization enhancing feature may also include positioning each spray hole so as to extend orthogonally from the interior surface of the fuel cavity to create optimal entry of the fuel into the tangential flow path.
    Type: Grant
    Filed: September 1, 1998
    Date of Patent: February 29, 2000
    Assignee: Cummins Engine Company, Inc.
    Inventors: Bradlee J. Stroia, Dennis M. Ashwill, Chad L. Buchanan
  • Patent number: 6030476
    Abstract: An insulating container comprising a container body having at least one side wall and a bottom wall with the side wall including a base layer, an insulating layer on at least a portion of the base layer and a printed pattern, mineral oil application or combination thereof on at least a portion of the surface of the insulating layer is disclosed wherein a thickness of the insulating layer is controlled by the printed pattern and/or mineral oil on the selected portion of the insulating layer. Similarly, stock material incorporating the present invention includes a base layer, an insulating layer formed on at least a portion of the base layer and a printed pattern printed on and or mineral oil applied to the insulating layer is disclosed wherein the thickness of the insulating layer is again controlled by the printed pattern and/or mineral oil on the portion of the insulating layer.
    Type: Grant
    Filed: April 11, 1997
    Date of Patent: February 29, 2000
    Assignee: Fort James Corporation
    Inventors: Daniel James Geddes, Michael Andrew Breining, Michael Schmelzer
  • Patent number: 6026744
    Abstract: In stencil printing, a printing matrix is thermally made in a printing matrix area on a stencil material on the basis of image information representing an image on an original. The printing matrix area is determined according to the sheet size of printing paper sheet. The stencil thus obtained is wrapped around a printing drum and a printing paper sheet fed toward the printing drum is pressed against the printing drum by a pressure member. A memory which is provided on the printing drum side stores information on the area of the printing matrix. The sheet size is compared with the area of the printing matrix based on information extracted from the memory. When the former is smaller than the latter, printing is inhibited and an error signal which advises against printing is output.
    Type: Grant
    Filed: June 30, 1998
    Date of Patent: February 22, 2000
    Assignee: Riso Kagaku Corporation
    Inventor: Masakazu Miyata
  • Patent number: 6028264
    Abstract: Non-single-crystalline semiconductor material or device containing carbon impurity in a concentration less than 4.times.10.sup.18 atoms/cm.sup.3.
    Type: Grant
    Filed: July 25, 1997
    Date of Patent: February 22, 2000
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Shunpei Yamazaki
  • Patent number: 6027614
    Abstract: A process for producing a creped sheet as well as a creping blade and creped paper product formed by such blade is set forth with the process including the steps of adhering a cellulosic web to a moving surface, providing a stepped creping blade disposed to crepe the cellulosic web from the moving surface and creping the cellulosic web from the moving surface forms a creped paper product having greater bulk and absorbency than previously prepared creped paper products.
    Type: Grant
    Filed: August 26, 1997
    Date of Patent: February 22, 2000
    Assignee: Fort James Corporation
    Inventors: Peter Parker, Thomas N. Kershaw, Robert Marinack, Ranga Ramesh, Frank Harper
  • Patent number: 6028333
    Abstract: A circuit adapted to dynamically activate an electro-optical display device is constructed from a thin-film gate-insulated semiconductor device. This device comprises PMOS TFTs producing only a small amount of leakage current. Besides the dynamic circuit, a CMOS circuit comprising both NMOS and PMOS thin-film transistors is constructed to drive the dynamic circuit.
    Type: Grant
    Filed: July 19, 1996
    Date of Patent: February 22, 2000
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Yasuhiko Takemura
  • Patent number: 6025630
    Abstract: A silicon oxide film is formed to cover an island non-monocrystalline silicon region by plasma CVD using an organic silane having ethoxy groups (e.g., TEOS) and oxygen as raw materials, while hydrogen chloride or a chlorine-containing hydrocarbon (e.g., trichloroethylene) of a fluorine-containing gas is added to the plasma CVD atmosphere, preferably in an amount of from 0.01 to 1 mol % of the atmosphere so as to reduce the alkali elements from the silicon oxide film formed and to improve the reliability of the film. Prior to forming the silicon oxide film, the silicon region may be treated in a plasma atmosphere containing oxygen and hydrogen chloride or a chlorine-containing hydrocarbon. The silicon oxide film is obtained at low temperatures and this has high reliability usable as a gate-insulating film in a semiconductor device.
    Type: Grant
    Filed: November 12, 1998
    Date of Patent: February 15, 2000
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Takeshi Fukada, Mitsunori Sakama, Yukiko Uehara, Hiroshi Uehara
  • Patent number: 6021680
    Abstract: A cylinder 3 in a casing 2 is provided with a first suction chamber 34 and a nozzle part 33 having a suction passage 3d in communication with the first suction chamber 34. In the casing 2. a first piston 4 which is slidably inserted into the first suction chamber 34 and includes a second suction chamber 43 is provided with pushed in a direction of protruding from the first suction chamber 34. Further, in the casing 2, a second piston 5 slidably inserted into the second suction chamber 43 is provided with pushed with less resiliency than with respect to the first piston 4 in a direction of protruding from the second suction chamber 43. At the top part of the casing 2, an operating lever 6 is provided for operating the first and second pistons 4 and 5 to switch between a small suction position that the second piston 5 is embedded in the first piston 4 and a large suction position that the first and second pistons 4 and 5 are embedded in the cylinder 3 and the first piston 4, respectively.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: February 8, 2000
    Assignees: The Sailor Pen Co., Ltd, Itochu Corporation
    Inventors: Isao Inagaki, Akira Tsuji, Kiyoto Shigematsu, Kazumitsu Ohga, Yoshiyuki Sunaga, Fumio Kobayashi
  • Patent number: 6023075
    Abstract: An electro-optical device and a method for manufacturing the same are disclosed. The device comprises a pair of substrates and an electro-optical modulating layer (e.g. a liquid crystal layer having sandwiched therebetween, said pair of substrates consisting of a first substrate having provided thereon a plurality of gate wires, a plurality of source (drain) wires, and a pixel matrix comprising thin film transistors, and a second substrate facing the first substrate, wherein, among the peripheral circuits having established on the first substrate and being connected to the matrix wirings for the X direction and the Y direction, only a part of said peripheral circuits is constructed from thin film semiconductor devices fabricated by the same process utilized for an active device, and the rest of the peripheral circuits is constructed from semiconductor chips.
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: February 8, 2000
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Shunpei Yamazaki
  • Patent number: 6017783
    Abstract: A novel structure of TFT is described. In the structure of TFT, an anodic oxidation film, which is a material composing a gate electrode, is laid at the side of gate electrode. An electrode, which is connected to a source, drain region, is in contact with the upper surface and the side of the source, drain region, and extended on the upper surface of an insulation film which is laid on the gate electrode. In the preparation process of TFT, it can be completed by using only two sheets of mask.
    Type: Grant
    Filed: July 19, 1995
    Date of Patent: January 25, 2000
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Toshiji Hamatani
  • Patent number: 6016757
    Abstract: A tufting device for the filling tool of a brush tufting machine is provided which permits the operating stroke of the filling tool to be varied and adjusted without affecting operating speed and precision of operation. The tufting device has a guide block, a guide channel in the guide block, a tuft driver tongue driven with a reciprocating movement and movably received in the guide channel, and a header having a through channel aligned with the guide channel. The header and guide block are driven with a relative reciprocating movement towards and away from each other. The device further has a drive system with a rotating drive shaft, a cam on the drive shaft and a cam follower riding on the cam. The cam follower is driven by the cam with a reciprocating movement of a predetermined stroke length. The drive system further comprises a conversion mechanism for converting the reciprocating movement of a predetermined stroke length into a drive stroke of an adjustably variable length.
    Type: Grant
    Filed: September 18, 1998
    Date of Patent: January 25, 2000
    Assignee: G.B. Boucherie N.V.
    Inventor: Bart Gerard Boucherie
  • Patent number: 6013929
    Abstract: A gate insulating film 103 is oxidized by a thermal oxidation method using a gate electrode 104 as a mask. At this time, the thickness of the gate insulating film 103 becomes thicker so that the portions indicated by 106 and 107 are obtained. The thickness of an active layer becomes thin at an end 112 of a channel, so that the distance from the gate electrode becomes long by the thickness. Then the strength of an electric field between a source and drain is relaxed by this portion. In this way, a thin film transistor having improved withstand voltage characteristics and leak current characteristics is obtained.
    Type: Grant
    Filed: July 7, 1998
    Date of Patent: January 11, 2000
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Hisashi Ohtani