Patents Examined by Diego F. F. Gutierrez
  • Patent number: 5833367
    Abstract: A disposable probe cover for an electronic tympanic ("ear") thermometer is made of closed-cell foam that is laminated with a sheet of high density polyethylene plastic film substantially transparent to infrared radiant energy. The probe cover is hollow, defining a central passageway that accepts an oversized probe and can potentially accommodate a variety of different probe configurations. The foam construction allows the probe cover to stretch over the oversized probe--retaining the probe cover on the probe during use. The foam construction also allows the probe cover to deform when inserted into a patient's ear--sealing the patient's ear canal to prevent external heat and light from affecting the measurement, and providing a high degree of cushioning and comfort not available in any prior disposable probe cover design. The film laminate and foam provide a barrier that is impervious to germs, fluids and other secretions--further reducing the already low risk of cross-contamination.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: November 10, 1998
    Assignee: TruTek, Inc.
    Inventors: Edward P. Cheslock, Eric L. Canfield, Richard K. Harris
  • Patent number: 5829148
    Abstract: An articulated coordinate measuring arm having swiveling joints which are unlimited by an end-stops. Power and signals are transmitted through a swiveling joint using a multi-conductor electrical slip-ring sub-assembly. Joint position transducer signal conditioners are closely located to the joint position transducers to reduce signal noise degradation. Rigid transfer members connecting the joints comprise a freely rotating shaft mounted within an outer sheath, wherein both shaft and sheath extend substantially the length of the transfer member, and the shaft outer diameter approaches that of the sheath inner diameter.
    Type: Grant
    Filed: April 23, 1996
    Date of Patent: November 3, 1998
    Inventor: Homer L. Eaton
  • Patent number: 5829877
    Abstract: A measuring technique and method are provided to simultaneously determine the molecular density of several molecular species and the temperature within a closed process room in a melting or combustion process. In such processes in the industry, e.g. in metallurgic process industry, it is important to determine the temperature and the contents within the gas or flame without physically connect to or disturb the process. This has shown to raise large problems especially at high temperatures. The radio signal over a frequency band is measured on the outside of the process room through a window in the mantel covering as a function of frequency and registered on a computer as a radio spectrum. The system is calibrated by using a known signal transmitted through the process room. The spectral lines are identified by their frequency from a database. The temperature is determined from several lines of the same molecular specie and the molecular densities are determined from the intensities of the lines.
    Type: Grant
    Filed: August 2, 1995
    Date of Patent: November 3, 1998
    Inventor: Lars B. B.ang..ang.th
  • Patent number: 5829878
    Abstract: A digital fever thermometer includes a backlit LCD display, which may act as a non-audible annunciator indicating that a stable temperature has been achieved. The digital fever thermometer includes a photo detector and a single mode-select switch to determine when the backlight should be enabled. When the backlight is enabled, the thermometer activates the backlight, indicating that a temperature reading is complete.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: November 3, 1998
    Assignee: Micro Idea Instruments, Ltd.
    Inventors: John Weiss, Donald S. Malin
  • Patent number: 5829303
    Abstract: A method and apparatus for measuring a liquid level using a liquid level gauge having reed switches to determine the position of a magnetic float. Firstly, providing an elongate float having an axial bore defining a longitudinal axis. The float has a plurality of magnets axially spaced along the longitudinal axis to form magnetic layers. Secondly, providing a tube having a first end and a second end. A plurality of magnetically activated reed switches are equally axially spaced from the first end to the second end. The tube extends through the axial bore of the float. Thirdly, determining which of the plurality of magnetically activated reed switches have been activated by the axially spaced magnetic layers of the float and interpolating float position in relation to the activated reed switches.
    Type: Grant
    Filed: June 20, 1996
    Date of Patent: November 3, 1998
    Inventor: George David Fraser
  • Patent number: 5826980
    Abstract: A non-contact thermometer uses a pyroelectric infrared sensor which makes it possible to measure temperatures of an object having a large area required to be measured, and at a plurality of points. The thermometer sets up a reference position without using a position detecting switch and also improves the accuracy of measuring the temperature due to its increased amount of incident infrared rays transmitted as a result of reducing the motor speed and extending the time of measurement at the point where infrared rays of the object to be measured is to be detected. The thermometer's stepping motor is fed with its operation step input and brought to a stop at the reference exciting phase of the motor which has been set up in advance. The whole measurement operation thereafter is arranged to proceed, starting from the above exciting phase serving as the reference, at which point the motor was brought to a stop.
    Type: Grant
    Filed: August 28, 1996
    Date of Patent: October 27, 1998
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Katsumi Kouzu, Shigehiro Yoshiuchi, Koji Oike, Masaaki Matsui, Kazuto Kume
  • Patent number: 5826982
    Abstract: The present invention concerns a sensor module with a hollow mirror (3) at whose focal point a sensor element (4) has been arranged whose output signal is compared with a reference signal and is transformed into a temperature signal in an evaluation circuit (15). The sensor module has a thermopile (6) in whose immediate vicinity a temperature reference element (5) has been arranged; a first pre-amplifier (8, 9), that is capable of being calibrated, amplifies the output signal from the thermopile (6); a second pre-amplifier (10-13) amplifies the output signal from the temperature reference element (5); and a third pre-amplifier (14) is connected into the circuit in the form of a difference amplifier and forms the difference in signal between the outputs from the first pre-amplifier (8, 9) and the second pre-amplifier (10-13).
    Type: Grant
    Filed: June 14, 1996
    Date of Patent: October 27, 1998
    Assignee: Heimann Optoelectronics GmbH
    Inventors: Jorg Schieferdecker, Reiner Quad, Mischa Schulze
  • Patent number: 5826984
    Abstract: Method and apparatus for the optical determination of the temperature of a gaseous mixture, the method comprising the stages consisting:of exciting in the infrared range the molecules of a gas of said mixture, from a first vibrational level towards a second vibrational level;of allowing the rotational relaxation of said molecules between the different rotational sub-levels of said second vibrational level;of measuring the ratio of the populations of molecules located at two of said rotational sub-levels; andof deducing from said ratio the temperature of the gaseous mixture.
    Type: Grant
    Filed: December 6, 1994
    Date of Patent: October 27, 1998
    Assignee: Sextant Avionique
    Inventor: Henri Fima
  • Patent number: 5826535
    Abstract: A tethered display device with at least two vertical panels connected at a top seam and a bottom seam. The panels are preferably cloth or other soft and flexible material. The panels and seams define at least one tubular channel through which air can flow. In preferred embodiments there are multiple channels in each device. Preferred embodiments will also have at least one soft airfoil horizontally disposed between and connected to the two vertical panels. In the simplest airfoil embodiment, the airfoil defines two tubular channels, the one above the airfoil and the one below it; in each airfoil embodiment, an airfoil so defines in part at least one of the tubular channels. In some embodiments there are multiple airfoils. The device may be employed optionally in combination with an artificially enhanced or induced windsource.
    Type: Grant
    Filed: June 25, 1996
    Date of Patent: October 27, 1998
    Inventor: Matthew H. Shaw
  • Patent number: 5826534
    Abstract: A portable whistle is assembled from an injection molded main body having an air blowing opening within which an injection molded plug is inserted so that whistling is created when air is blown into the opening and through a groove formed in the plug and a slot formed in the body.
    Type: Grant
    Filed: February 11, 1997
    Date of Patent: October 27, 1998
    Inventor: King-Lin Huang
  • Patent number: 5826983
    Abstract: A thermomechanical analyzer capable of performing, in addition to thermomechanical measurement, thermogravimetry of a sample of several grams or more only by switching parts of the analyzer. A thermomechanical analyzer has a heating furnace, a temperature detector for detecting temperature of the sample that is placed within the heating furnace, an attachable/detachable detecting rod and a sample holding member, wherein the sample is held between the detecting rod and the sample holding member. A load applying instrument applies an external force to the sample via the detecting rod. A displacement detector detects displacement of the detecting rod relative to the sample holding member. The thermomechanical analyzer is provided with a control computing apparatus for adjusting an output from the load applying instrument to bring an output from the displacement detector closer to a fixed value.
    Type: Grant
    Filed: July 10, 1996
    Date of Patent: October 27, 1998
    Assignee: Seiko Instruments Inc.
    Inventors: Nobutaka Nakamura, Yoshiharu Sugano
  • Patent number: 5823677
    Abstract: The method of detecting and identifying a substance in a sample requires the sample to be changed from a first temperature to a second temperature, the sample scanned with an instrument for measuring infrared radiation, the temperature difference between the temperature of the substance and a reference temperature determined, and the substance identified based on this temperature difference. The infrared method allows for the objective determination of a substance in a sample without the necessity of the labor and time required in conventional methods and is especially suitable for detecting the presence of "stickies" in recycled paper.
    Type: Grant
    Filed: March 18, 1996
    Date of Patent: October 20, 1998
    Assignee: The Board of Trustees of Western Michigan
    Inventors: William K. Forester, Timothy J. Lobbes
  • Patent number: 5823681
    Abstract: An emissivity compensating non-contact system for measuring the temperature of a semiconductor wafer. The system includes a semiconductor wafer emissivity compensation station for measuring the reflectivity of the wafer at discrete wavelengths to yield wafer emissivity in specific wavelength bands. The system further includes a measurement probe which is optically coupled to a semiconductor process chamber. The probe senses wafer self emission using one or more optical detectors and a light modulator. A background temperature determining mechanism independently senses the temperature of a source of background radiation. Finally, a mechanism calculates the temperature of the semiconductor wafer based on the reflectivity, self-emission and background temperature.
    Type: Grant
    Filed: February 29, 1996
    Date of Patent: October 20, 1998
    Assignee: C.I. Systems (Israel) Ltd.
    Inventors: Dario Cabib, Robert A. Buckwald, Michael E. Adel
  • Patent number: 5822876
    Abstract: A gauge for measuring an out-of-plane surface displacement profile around a cold-worked fastener hole in relation to the distribution of residual compressive stresses around the hole and related fatigue life. The gauge has a deformable strain sensor positionable to be deformed in accord with the out-of-plane surface of the structural material circumferentially surrounding the cold-worked hole. A measurement reporting readout device is in communication with the strain sensor and relates three-dimensional surface-profile measurement data in accord with strain sensor deformation to determine or verify the cold expansion magnitude, uniformity and consequent fatigue life through three-dimensional elastoplastic finite element comparative analyses and/or experimental measurements for a hole in any material of given thickness.
    Type: Grant
    Filed: April 25, 1996
    Date of Patent: October 20, 1998
    Assignee: Northrop Grumman Corporation
    Inventors: Edwin G. Haas, James R. Kennedy, Alvin Levy, John M. Papazian
  • Patent number: 5825804
    Abstract: A temperature distribution measuring apparatus and related method uses optical time domain reflectometry to determine temperature distribution along an optical fiber. A light pulse enters the fiber at one end, and backscattered light at each of various points in the optical fiber has a Raman spectrum which contains temperature information. An impulse response to the Raman spectra of backscattered light is produced using a transformation to provide a temperature distribution along the optical fiber. An impulse response on the anti-Stokes component and an impulse response of the Stokes component of the Raman spectrum are each produced, and the ratio between them indicates temperature distribution. Each impulse response is obtained by performing deconvolution on the Stokes component and the anti-Stokes component using an inverse matrix of measured incident light, the inverse matrix being obtained by an iteration method with an optimum number of iterations.
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: October 20, 1998
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yukio Sai
  • Patent number: 5823046
    Abstract: A measuring vessel for measuring finely-ground packable and dry material, such as ground brewing coffee, cocoa, flour and so on is provided which includes a measuring tube (1) which is open at both ends. The bottom end of the tube includes a constriction (3) with an opening which is defined by an edge (4) which slopes relative to the horizontal plane. The measuring vessel is inserted vertically into the finely-ground material and the material enters the vessel from beneath, through the bottom opening. When the vessel is lifted, the material collected in the vessel will remain therein by virtue of frictional bounds in the material, until the vessel is turned upside down, whereupon the material will run out through the top opening.
    Type: Grant
    Filed: July 18, 1997
    Date of Patent: October 20, 1998
    Inventors: Tonie Schagerstrom, Par Eriksson, Anders Olsson
  • Patent number: 5823679
    Abstract: Method and apparatus are provided for visibly outlining the energy zone to be measured by a radiometer. The method comprises the steps of providing a laser sighting device on the radiometer adapted to emit more than two laser beams against a surface whose temperature is to be measured and positioning said laser beams about the energy zone to outline said energy zone. The apparatus comprises a laser sighting device adapted to emit more than two laser beams against the surface and means to position said laser beams about the energy zone to outline said energy zone. The laser beams may be rotated about the periphery of the energy zone. In another embodiment, a pair of laser beams are projected on opposite sides of the energy zone. The laser beams may be further pulsed on and off in a synchronised manner so as to cause a series of intermittent lines to outline the energy zone. Such an embodiment improves the efficiency of the laser and results in brighter laser beams being projected.
    Type: Grant
    Filed: April 28, 1997
    Date of Patent: October 20, 1998
    Assignee: Omega Engineering, Inc.
    Inventors: Milton Bernard Hollander, William Earl McKinley
  • Patent number: 5823680
    Abstract: A temperature sensor includes a ceramic substrate, and a sensing resistor containing platinum is embedded in the ceramic substrate. Electric current can be applied to the sensing resistor through the lead. The voltage of the sensing resistor can be detected through the second lead. Another resistor for dividing voltage is electrically connected to the sensing resistor, the resistor is trimmed by laser irradiation so as to adjust its electrical resistance value such that upon applying electric current having a certain value onto the sensing resistor an output voltage having a predetermined value is generated. Heat generated by the laser irradiation to the resistor does not affect an electrical resistance value of the resistor as much as that of the sensing resistor, thereby improving precision of the temperature sensor. The sensing resistor avoids contact with the atmosphere.
    Type: Grant
    Filed: March 11, 1997
    Date of Patent: October 20, 1998
    Assignee: NGK Insulators, Ltd.
    Inventors: Nobuhide Kato, Nobukazu Ikoma
  • Patent number: 5823678
    Abstract: Method and apparatus are provided for visibly outlining the energy zone to be measured by a radiometer. The method comprises the steps of providing a laser sighting device on the radiometer adapted to emit at last one laser beam against a surface whose temperature is to be measured and positioning said laser beam about the energy zone to outline said energy zone. The apparatus comprises a laser sighting device adapted to emit at least one laser beam against the surface and means to position said laser beam about the energy zone to outline said energy zone. The laser beam may be rotated about the periphery of the energy zone. In another embodiment, a pair of laser beams are projected on opposite sides of the energy zone. The laser beam may be further pulsed on and off in a synchronised manner so as to cause a series of intermittent lines to outline the energy zone. Such an embodiment improves the efficiency of the laser and results in a brighter laser beam being projected.
    Type: Grant
    Filed: December 11, 1996
    Date of Patent: October 20, 1998
    Assignee: Omega Engineering, Inc.
    Inventors: Milton Bernard Hollander, William Earl McKinley
  • Patent number: 5820261
    Abstract: A calibration instrument for calibrating a temperature probe, such as pyrometer, uses a stable light source, such as a light emitting diode, to simulate a blackbody of a known temperature. The light source is located inside a chamber and emits light through an aperture. The calibration instrument may be inserted into a thermal processing chamber, or the temperature probe may be removed from the chamber. An alignment tool aligns the aperture to the input of the temperature probe. The calibration instrument may be integrated with the alignment tool, or it may be removable.
    Type: Grant
    Filed: July 26, 1995
    Date of Patent: October 13, 1998
    Assignee: Applied Materials, Inc.
    Inventor: Mark Yam