Patents Represented by Law Firm Schatzel & Hamrick
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Patent number: 4140941Abstract: A cathode-ray display panel comprising first and second transparent substrates which constitute an envelope, a transparent electrode arranged on the first transparent substrate, a photoconductive layer arranged on the transparent electrode, a plurality of phosphor members arranged on the photoconductive layer, electrically insulating opaque substances embedded between the phosphor members, at least one cathode electrode for emitting electrons and at least one grid electrode for uniformly distributing the electrons emitted from the cathode electrode onto the phosphor members.Type: GrantFiled: June 12, 1978Date of Patent: February 20, 1979Assignee: ISE Electronics CorporationInventor: Sashiro Uemura
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Patent number: 4137984Abstract: A self-guided automatic load transporter for moving cargo between two or more locations by following a buried energized conductor and including a body which occupies a volume of space substantially surrounded on four sides by an exterior wall and having its interior divided by a plurality of transverse and longitudinal internal walls of approximately the same height as the external wall, a pair of parallel fork pockets extending between two parallel sides of the exterior wall, three base plates welded to the bottom of a number of the internal walls forming several box-like enclosures accessible only from the top, the plates not entirely covering the bottom and leaving open a number of wells, a cargo plate or bed disposed on top of and covering the body, a lightweight safety bumper extending forwardly and sidewardly from a front end of the transporter which senses obstructions and causes the transporter to stop, independent, motor driven wheels mounted on a common beam axletree which is disposed in a rearwardType: GrantFiled: November 3, 1977Date of Patent: February 6, 1979Inventors: Frederick R. Jennings, James O. Moritz
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Patent number: 4133008Abstract: A compensation circuit for use in a document reproduction system for correcting variations in white level occurring between different documents and due to nonuniformity of the scanning process including a variable voltage gain amplifier for compensatingly modifying the output of an image scanner and having a gain control system which drives the white level amplifier gain to a predetermined level so that the scanner output is made independent of certain well known causes of nonuniformity.Type: GrantFiled: March 14, 1977Date of Patent: January 2, 1979Assignee: Rapicom Inc.Inventor: James G. Tisue
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Patent number: 4127828Abstract: A multiple prism beam expander for use in dye lasers and the like comprising two or more prisms positioned relative to each other and between a dye cell and diffraction grating such that laser light from the dye cell is passed through first one of the prisms and then another with at least two of the prisms serving to magnify the incident light beam in the plane of refraction common to both prisms.Type: GrantFiled: March 25, 1977Date of Patent: November 28, 1978Assignee: Molectron CorporationInventor: Gary K. Klauminzer
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Patent number: 4127202Abstract: A stablized, true tracking trailer adapted to be cross-coupled with other true tracking trailers into a train, each trailer having a vehicle body including a cargo bed and having a fixed wheel and two castor wheels supporting the body, thereby providing a stable 3 point contact with the ground, a first and second pivotal connector attached proximate opposite corners of the first end of the body, and a third and fourth pivotal connector attached proximate opposite corners of a second end of the body for use with trailer cross-coupling linkage arms.Type: GrantFiled: October 31, 1977Date of Patent: November 28, 1978Inventors: Frederick R. Jennings, James O. Moritz
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Patent number: 4127336Abstract: The type head comprises a hub mounted on the shaft of a drive motor, an annular rim concentric with the hub and connected thereto through a plurality of radial spokes, a plurality of supporting arms extending from the outer periphery of the annular rim and type units mounted on the outer ends of respective supporting arms.Type: GrantFiled: February 28, 1977Date of Patent: November 28, 1978Assignee: Nippon Telegraph and Telephone Public CorporationInventors: Yuji Hiraoka, Yodo Kageyama
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Patent number: 4117270Abstract: A telephone answering and call diverting system including a call diverter for sensing an incoming call on a first line and in response dialing a preset telephone number and transmitting a preset identification code both on a second line, for connecting the first and second lines together upon receipt of a connect command and for disconnecting both lines upon receipt of a disconnect command, and a call diverter controller and signal decoder for recognizing identification codes and for transmitting connect and disconnect commands.Type: GrantFiled: February 28, 1977Date of Patent: September 26, 1978Assignee: Candela Electronics, Inc.Inventor: Ronald A. Lesea
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Patent number: 4117464Abstract: Microwave apparatus for detecting the movement of a moving object comprising a Gunn oscillator device having input terminals that are capable of receiving a potential difference which serves to produce a bias current in the device, said potential difference being subject to variations, the device being responsive to a constant potential difference and operative to radiate microwave energy at a first frequency, and further responding to Doppler shifted energy reflected from the moving object and producing a variation in the bias current, an operational amplifier responsive to the potential difference and a reference signal for developing a first signal when the potential difference exceeds the reference signal and a second signal when it is less, a series-pass transistor connected to a source of DC potential and the operational amplifier and being switchable between a conducting and a non-conducting state in response to the first and second signals and serving to maintain the potential difference at a constantType: GrantFiled: November 11, 1976Date of Patent: September 26, 1978Assignee: Solfan Systems, Inc.Inventor: Erno B. Lutz
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Patent number: 4114750Abstract: A printer system having local control for dynamically positioning a print head relative to a print medium utilizing positioning and print data signal inputs, including a control unit for receiving and storing data inputs, the control unit including circuit means responsive to the positioning data for arranging and outputing the stored print data to a print head, control circuitry connected to said control unit and head positioning apparatus employing a movable print medium connected to the control circuitry for positioning the head in relationship to the web in response to said control circuitry so that the head is thereby dynamically controlled by the respective data signal inputs.Type: GrantFiled: August 6, 1975Date of Patent: September 19, 1978Assignee: Hydra CorporationInventors: Henry S. Baeck, William C. Bennett, David C. Condon, Harold R. Gillette, Donald G. Herbert
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Patent number: 4114115Abstract: Compandor apparatus including a compressor comprised of an operational amplifier having a plurality of gain controlling feedback paths that are respectively responsive to different portions of the input frequency spectrum, and an expandor comprised of an operational amplifier having a plurality of gain controlling circuits that are respectively responsive to different portions of the input frequency spectrum.Type: GrantFiled: November 4, 1976Date of Patent: September 12, 1978Assignee: California Microwave, Inc.Inventor: Thomas R. Minnis
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Patent number: 4112716Abstract: A padlock device including a unitary, elongated, cylindrical metal body having spring loaded shackle elements extending into one end thereof and a key-locking cylinder assembly extending into the other end. Rounded recesses are formed along the sides of the cylindrical body and the shackle pin holes are arranged so that the pins respectively extend through the recesses. The locking cylinder includes a pawl mechanism which engages notches in the ends of the shackle pins for locking the pins in the closed position.Type: GrantFiled: May 18, 1976Date of Patent: September 12, 1978Assignee: Research Machine & Development, Inc.Inventor: Joachim Wippich
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Patent number: 4113196Abstract: Apparatus for loading tape onto the hub of a magnetic tape cartridge spool and including a tape supply for supplying a continuous strip of tape, a carriage for locating the cartridge at a first position, a hub drive for turning the spool to wind tape thereon, a tape cutter for cutting the length of tape from the continuous strip, a flyer carried by the hub drive for releasably holding the ends of the tape wound upon the hub, a tape supply arm for moving the lead end of the strip into contact with the flyer, for guiding the strip as it is wound onto the hub and for aligning and holding the strip relative to the cutter, a take-up loop arm for measuring out a selected loop length of the tail portion of the length of tape wound upon the hub, for holding the tape as it is cut by the cutter and for moving the tail end of the length into contact with the flyer and positioning it in abutting relationship with the lead end held thereby, a splicer for applying a segment of splicing tape across the abutted lead and tailType: GrantFiled: November 4, 1976Date of Patent: September 12, 1978Assignee: Electro-Sound, Inc.Inventor: George D. Rehklau
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Patent number: 4104685Abstract: A video recorder/reproducer tape transport including a supply reel, a take-up reel, a helical scanner head assembly for recording and reproducing signals on the tape in a helical scan format, a capstan, a first movable tension tape guide positioned within the tape path intermediate the scanner head assembly and one of said reels and being movable under tension between a first location and a second location, the first movable tension tape guide being constantly under tension urging it towards the first location in opposition to the tension on the tape, and a second movable tension tape guide positioned within the tape path intermediate the other of the reels and the capstan, and being movable under tension between a third and a fourth location, the second movable tension tape guide being constantly under tension urging it toward the third location in opposition to the tension on the tape.Type: GrantFiled: January 13, 1977Date of Patent: August 1, 1978Assignee: Recortec, Inc.Inventor: David T. L. Chang
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Patent number: 4097884Abstract: A method and apparatus for processing X-ray film comprising a processing tank having a port in its lower portion, three solenoid valves each having an outlet coupled to the port and operative to allow a developer solution, a fixer solution and water to flow through the respective valve, a drain solenoid valve having an inlet connected to the port and an outlet and being operative to allow working solutions to drain from its inlet to its outlet, sources of photographic developer solution and fixer solution for supplying developer solutin and fixer solution to the respective inlets of two of the valves, a source of water having an orifice connected to the inlet of the third valve, the water having a pressure which is in a predetermined range between a first pressure and a second pressure and being subject to variations, the orifice having a dimension sufficient to provide a turbulent flow of water to the tank when the water valve is open, and an electrical system for selectively supplying electrical signals toType: GrantFiled: September 24, 1976Date of Patent: June 27, 1978Assignee: Adex CorporationInventors: Daniel J. Lasky, Philip R. Wright
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Patent number: 4097908Abstract: A method of inspecting the skew angle of the transducing gap of a magnetic head in a disk drive having a rotatable spindle, a lead screw rotatably mounted to a motor and carrying a carriage with a magnetic head affixed thereto, the magnetic head having a transducing gap that is disposed in a transducing relationship relative to bits of information on a disk and that is skewed at an angle relative to a radial line of the disk, the magnetic head serving to produce a read signal having an amplitude corresponding to the skew angle and to the acute angle of the bits.Type: GrantFiled: September 17, 1976Date of Patent: June 27, 1978Assignee: Shugart AssociatesInventors: Albert S. Chou, Frank M. Balbas
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Patent number: 4095855Abstract: A gas lubricated spindle bearing assembly comprising a stator assembly and a rotor assembly with a spindle engaged to the rotor and a twin parallel flexure engaged to one of said assemblies to establish and maintain an air spacing between the adjacent interfacing surfaces of the said stator and rotor assemblies.Type: GrantFiled: September 20, 1976Date of Patent: June 20, 1978Assignee: Fox International, Inc.Inventor: Wayne L. Fox
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Patent number: 4095615Abstract: A check valve for substantially preventing fluid flow in a first direction, but allowing a substantially unrestricted fluid flow in a second, opposite direction, the check valve including a tubular body and a flapper valve hingedly disposed within the tubular body so that the flapper valve, which is formed from a diagonally-cut section of tubing, may substantially block the tube by sealing its cut edges against a first inner wall portion of the tubular body and so that its cut edges may also lie substantially flush along a second inner wall portion of the tubular body allowing for substantially unimpeded fluid flow.Type: GrantFiled: May 21, 1976Date of Patent: June 20, 1978Assignee: Ramco Manufacturing, Inc.Inventor: Larry R. Ramsauer
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Patent number: 4096429Abstract: A regulator for controlling the field exitation current of a generating device when the voltage developed exceeds a preset level and including a first resistor for establishing the level of a base current, a first transistor responsive to the base current for selectively developing the exitation current, a first switching device which is biased on and is connected between the first resistor and the base of the first transistor and a second switching circuit for monitoring the generator voltage and for switching the first switching device off preventing current flow in the first resistor when the voltage exceeds a preset level. The regulator also includes four terminals and a connecting strap configured to permit universal application of the regulator.Type: GrantFiled: September 10, 1976Date of Patent: June 20, 1978Inventor: Lonnie S. Carter
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Patent number: PP4287Abstract: A new variety of chrysanthemum plant originating as a sport of Horim (unpatented) and characterized by satiny golden blooms, vigorous growth, three month response and permanence.Type: GrantFiled: August 26, 1977Date of Patent: August 1, 1978Assignee: Chrysanthemum Breeders Association N.V.Inventor: Nicolaas Middelburg
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Patent number: PP4288Abstract: A new variety of chrysanthemum plant originating as a sport of Horim (unpatented) and characterized by satiny pink blooms, vigorous growth, 3 month response and permanence.Type: GrantFiled: August 29, 1977Date of Patent: August 1, 1978Assignee: Chrysanthemum Breeder Association N.V.Inventor: Nicolaas Middelburg