Patents Examined by Lydia M. De Jesús
  • Patent number: 6749334
    Abstract: An ear thermometer probe structure comprises a shell body. A hollow thermal absorption component is disposed in the shell body, and contacts several positioning points one the inner wall of the shell body. An air gap is formed at the part of the thermal absorption component not contacting the shell body. A wave guide is disposed in the thermal absorption component. The rear section of the wave guide tightly contacts the thermal absorption component, and the front section thereof is separated from the shell body by an air gap. A filter is disposed at the front end of the wave guide to let infrared rays be transmitted. An annular sealing pad is located between the filter and the top of the shell body. A sensor is disposed behind the wave guide and fixed on the thermal absorption component. The sensor is separated from the thermal absorption component and the wave guide by an annular air room.
    Type: Grant
    Filed: August 9, 2002
    Date of Patent: June 15, 2004
    Assignee: Radiant Innovation Inc.
    Inventor: Kevin Lin
  • Patent number: 6749336
    Abstract: A temperature sensor having a capillary tube or stem, sealed at both ends, with a thin bore defined therein is applied to the measurement of temperatures having a range of about −100° to +400° Centigrade. A bulb comprising a liquid reservoir, is provided at one end of the capillary tube, in liquid communication with the bore, and is generally filled with an ionic thermometric liquid. In the operation of the temperature sensor, temperature is measured by the height of the liquid in the bore.
    Type: Grant
    Filed: January 2, 2003
    Date of Patent: June 15, 2004
    Inventors: Banqiu Wu, John D. Holbrey, Ramana G. Reddy, Robin D. Rogers
  • Patent number: 6746150
    Abstract: For detecting the temperature of a fluid, particularly a flowing liquid or gaseous medium, in the hollow space of a housing, a temperature-measuring element is provided that can be connected to an evaluation device via a plug arrangement and is arranged in a protective tube of a sensor housing, which is closed on one side, and with a connection piece firmly affixed thereto. The protective tube projects at least with its tip into an opening of the hollow space that is sealed off from the outside atmosphere using an elastic O-ring. The temperature-measuring element is arranged in the region of the tip of the protective tube on one end of a longitudinally extending circuit board and is connected via strip conductors to the plug arrangement that leads to the outside. The plug arrangement is surrounded by a screw sheath of the sensor housing, which is firmly connected to the protective tube and is provided with a threading that projects into the housing of the hollow space for the purpose of mounting.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: June 8, 2004
    Assignee: Heraeus Electro-Nite International N.V.
    Inventors: Karl-Heinz Wienand, Matthias Muziol
  • Patent number: 6733174
    Abstract: A semiconductor temperature detecting circuit use semiconductor temperature sensors each comprising bipolar transistors connected in a Darlington connection to provide a semiconductor temperature detecting circuit capable of automatically compensating for variations in fabrication of a reference voltage for comparing outputs of temperature sensors. The semiconductor temperature detecting circuit includes a first and a second semiconductor temperature sensor each having bipolar transistors connected in Darlington connection and respectively receiving different constant currents (I and nxI). Temperature detected is based on a corresponding relationship between a ratio of output voltages of the first and the second semiconductor temperature sensors and the temperature.
    Type: Grant
    Filed: July 31, 2001
    Date of Patent: May 11, 2004
    Assignee: Nippon Precision Circuits Inc.
    Inventors: Toru Matsumoto, Yasuhiro Mori
  • Patent number: 6733173
    Abstract: A pyrometer for use in measuring temperatures in a furnace, has a lens-tube for supporting an optical head in a port of the furnace for viewing an interior of the furnace along a line of sight. The optical head converts infrared radiation to electrical signals. A photometer circuit connected to the optical head processes the electrical signals and a scaling circuit connected to the photometer circuit scales the electrical signals. An output circuit connected to the scaling circuit receives the scaled electrical signals and produces output signals for display or control of the furnace. A power supply connected to the scaling circuit powers the photometer, scaling and output circuits. Calibration in the scaling circuit scales the electrical signals to be most sensitive to a wavelength of middle infrared radiation to which at least one gas component in the furnace is semi-transparent, for measuring the temperature of the at least one gas component.
    Type: Grant
    Filed: December 19, 1996
    Date of Patent: May 11, 2004
    Assignee: Diamond Power International, Inc.
    Inventors: John T. Huston, John W. Berthold, Thomas E. Moskal
  • Patent number: 6726360
    Abstract: The present invention provides an intensity modulated optical fiber temperature switching immersion probe for remote temperature monitoring and switching of an industrial process. The present invention also provides a method for remote sensing of temperature.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: April 27, 2004
    Assignee: Council of Scientific and Industrial Research
    Inventors: Nahar Singh, Subhash Chander Jain, Anil Kumar Aggarwal
  • Patent number: 6726357
    Abstract: The present invention involves identifying media type in a media processing device. A system according to one embodiment of the invention includes a thermal energy source and a thermal energy sensor. The thermal energy source and thermal energy sensor are arranged along a media feed path so as to accommodate transfer of thermal energy to the media by the thermal energy source, diffusion of such thermal energy, and subsequent sensing of such diffused thermal energy to determine a heat capacity of the media, such heat capacity being indicative of media type.
    Type: Grant
    Filed: May 20, 2002
    Date of Patent: April 27, 2004
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Phillip R. Luque, Jeffrey S. Weaver
  • Patent number: 6722309
    Abstract: The present invention relates to a bookmark for finding a desired page of a multi-page readable item such as a book or magazine having a plurality of pages bound along inner edges thereof, and disposed between opposed covers, said bookmark having a planar elongated section terminating at an upper curved hook-like extremity configured to extend, when said bookmark is in use, from said bound inner edges over the back of said readable item, an inner edge of an outer leg extension connected to said curved section said inner edge is substantially parallel to said inner edge of said elongated section. The present invention also relates to a second use of a bookmark as a coupon and/or a greeting card, to an advertising device comprising such a bookmark, and to a method for advertising such a bookmark.
    Type: Grant
    Filed: July 7, 2000
    Date of Patent: April 20, 2004
    Inventors: Eran Ben-Dor, Eran Conforty
  • Patent number: 6712504
    Abstract: A method for determining the relative humidity of a volume V of air having a temperature of 100° C. or greater. The method comprises the steps of measuring the temperature TV of the volume of air and determining from that temperature the saturation vapor pressure psat(V) of the volume of air; collecting from the volume of air a sample volume S of air and cooling it to a temperature TS below 100° C., but above the dew point of the sample volume of air; determining from the temperature TS the saturation vapor pressure psat(S) of the cooled sample volume of air; determining the relative humidity RHS of the sample volume of air from TS and from the wet bulb temperature of the sample of air; and performing the calculation RHV=RHS×psat(S)/psat(V) to obtain a relative humidity RHV of the volume of air.
    Type: Grant
    Filed: October 1, 2002
    Date of Patent: March 30, 2004
    Assignee: Forintek Canada Corp.
    Inventors: Chunping Dai, Guoxing Du
  • Patent number: 6698923
    Abstract: A device for collecting data relating to a cooking and/or heating process performed on a hob comprising at least one sensor associated with wireless data transmission means and means for receiving the signals transmitted from the data transmission means and connected to a hob management system for the purpose of permitting automatic control of the process. The sensor is fitted substantially at one end of a kitchen utensil suitable for coming into contact with the food to be cooked and/or heated, while the data transmission means are arranged in the handle of the kitchen utensil.
    Type: Grant
    Filed: March 4, 2002
    Date of Patent: March 2, 2004
    Assignee: Whirlpool Corporation
    Inventors: Nicola Bedetti, Gianpiero Santacatterina, Daniele Turetta
  • Patent number: 6695474
    Abstract: A protective cap (2) for a temperature measurement probe (30) of an infrared radiation thermometer (1) that can be introduced into a body cavity (31). The protective cap (2) includes a base body (12) shaped to fit the body cavity (31) and having a window (3) transparent to infrared radiation. The base body (12) is provided with additional structures (13; 18, 20) at least in parts to improve heat insulation between the temperature measurement probe (30) and the body cavity (31). This heat insulation of the temperature measurement probe (30) prevents measurement errors by the infrared radiation thermometer (1).
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: February 24, 2004
    Assignee: Braun Aktiengesellschaft
    Inventors: Frank Beerwerth, Bernhard Kraus, Katja Honnefeller
  • Patent number: 6695470
    Abstract: Apparatus and method for determining a change in the viscosity of a fluid, the apparatus including means for heating a portion of the fluid so that the heated portion will rise within the fluid, means for determining the heated portion's rise time, means for determining the heated portion's average velocity as it rises through the fluid and means for determining the viscosity of the fluid based on the rise time and/or average velocity of the heated portion. The method allows for permitting the temperature and agitation of the fluid to stabilize prior to heating a portion of the fluid so that it will rise within fluid. The rise time and/or average velocity of the heated portion is determined and the viscosity of the fluid may be determined the rise time and/or average velocity to a baseline rise time and/or average velocity. An output signal may be generated that is indicative of whether there has been a change in the fluid's viscosity and/or whether the fluid should be changed.
    Type: Grant
    Filed: September 10, 2002
    Date of Patent: February 24, 2004
    Assignee: Delphi Technologies, Inc.
    Inventors: Axel H Berndorfer, Jim H Campbell, Amiyo K. Basu
  • Patent number: 6679625
    Abstract: A scanning heat flow probe for making quantitative measurements of heat flow through a device under test is provided. In one embodiment the scanning heat flow probe includes an electric current conductor in a cantilever beam connected to a probe tip and coupled to two voltmeter leads. The probe also includes two thermocouple junctions in the cantilever beam electrically isolated from the electric current conductor and the two voltmeter leads. Heat flow is derived quantitatively using only voltage and current measurements. In other forms, the invention relates to the calibration of scanning heat flow probes through a method involving interconnected probes, and relates to the minimization of heat flow measurement uncertainty by probe structure design practices.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: January 20, 2004
    Assignee: International Business Machines Corporation
    Inventors: Steven Alan Cordes, David R. DiMilia, James Patrick Doyle, Matthew James Farinelli, Snigdha Ghoshal, Uttam Shyamalindu Ghoshal, Chandler Todd McDowell, Li Shi
  • Patent number: 6676287
    Abstract: The thermal conductivity of a sample of interest is measured by applying backing material to a sensor to substantially surround the sensor with the backing material and the tested material. The instrument response of the sensor corresponds to the thermal conductivity of the combination of the tested sample and the backing material. The instrument is calibrated to cancel effects of the backing material out of the instrument response.
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: January 13, 2004
    Assignee: Mathis Instruments Ltd.
    Inventors: Nancy Mathis, Christina Chandler
  • Patent number: 6659640
    Abstract: A system and method is provided for determining the temperature to which a structure is subjected. An optical fiber having at least one pair of fiber sensors is attached to the structure. The fiber sensors comprise Bragg gratings and each is configured to have a particular coefficient of thermal expansion and be responsive to a particular wavelength. A broadband spectrum of light is launched into the optical fiber. The light returning from the fiber sensors is detected. The temperature to which the structure is subjected is then determined based on the difference in strain response of the fiber sensors as a result of the effects of temperature upon the fiber sensors. Coatings of different materials may be applied over the optical fiber to provide the fiber sensors with differing coefficients of thermal expansion.
    Type: Grant
    Filed: April 26, 2001
    Date of Patent: December 9, 2003
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Anthony A. Ruffa
  • Patent number: 6653616
    Abstract: A device for processing output signals from a photo-diode uses a comparative conversion circuit to convert an analog output signal generated from a photo-diode to a square wave digital signal; wherein, a reference circuit obtains a reference signal by capturing the analog output signal from the photo-diode, feeds it back to a feedback logic unit for timing the high or low electric potential based on the reference signal; when the low electric potential time is too long, the entire electric potential and the wave crest value time of the output signal are adjusted to make the final output square wave digital signal of the comparative conversion circuit acquire a symmetric wave correction.
    Type: Grant
    Filed: January 11, 2002
    Date of Patent: November 25, 2003
    Assignee: Alcor Micro, Corp.
    Inventor: Pei-Sung Chuang
  • Patent number: 6647637
    Abstract: A downhole caliper instrument utilizing a linear or arcuate magneto resistive sensor to determine the position of one or more caliper arms which extend from a carrier tool to touch the surface of a borehole wall. A processor and firmware are included to calculate and plot the borehole radius. A plurality of magneto resistive sensors are provided to calculate the sine, cosine and tangent for accurate motion of each independent arm. The magneto resistive sensors sense the position a precise magnetic ruler linked to the caliper arm. The position of the caliper arm determines the radius of the borehole. Calculation of Radius/Diameter is preferably performed in the computer on surface. The downhole controller's firmware controls the multiplexer switching, A/D conversion and other functions.
    Type: Grant
    Filed: October 29, 2001
    Date of Patent: November 18, 2003
    Assignee: Baker Hughes Incorporated
    Inventor: Helmut Lechen
  • Patent number: 6643941
    Abstract: The compass system of the present invention utilizes an improved calibration routine in which a processing circuit of the compass recalibrates the compass each time three data points are obtained from a magnetic field sensor that meet predetermined criteria. One such criterion is that the three data points define corners of a triangle that is substantially non-obtuse. When three data points have been obtained that define a triangle meeting this criterion, the processing circuit calculates a center point for a circle upon which all three data points lie by solving the equation 2+y2+Ax+By+C=0 for A, B, and C, using the coordinate values (x,y) for the three data points and defining the center point as (−A/2, −B/2).
    Type: Grant
    Filed: July 24, 2001
    Date of Patent: November 11, 2003
    Assignee: Johnson Controls Technology Company
    Inventors: Jeffrey N. Parks, Thomas R. Olson, David J. Slater
  • Patent number: 6640451
    Abstract: The present invention relates to a system and method for sensing the angular position of a rotatable member. The system and method employ the use of a composite rotatable member comprising a solidifiable material and a magnetically attractable particulate material. The rotatable member has a major body portion and at least one magnetically detectable reference point. The reference point has a first magnetic property and the major body portion has a second magnetic property, different from the first magnetic property. A magnetic property sensor is fixed relative to the rotatable member to detect the passage of the reference point within the rotatable member. The sensor produces a signal in response to the passage of the reference point. A central processing unit is provided for determining the angular position of the rotatable member in response to the signal generated by the sensor.
    Type: Grant
    Filed: June 14, 2000
    Date of Patent: November 4, 2003
    Assignee: Visteon Global Technologies, Inc.
    Inventor: Edward John Vinarcik
  • Patent number: 6641303
    Abstract: There is provided a temperature control system for a humidity sensor, which is capable of eliminating impurities attached to a sensor element of the sensor efficiently and sufficiently while preventing the sensor element from being cracked due to heat generated by a heater in a state of condensation formed thereon, and suppressing attachment of impurities to the sensor element, thereby making it possible to preserve an excellent detection accuracy of the humidity sensor. The temperature control system controls the temperature of the sensor element of the humidity sensor arranged in an exhaust pipe for detecting humidity within the exhaust pipe. A heater heats the sensor element. The temperature of the sensor element is detected. When the detected temperature of the sensor element is higher than a predetermined temperature, said heater is operated.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: November 4, 2003
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Hideharu Yamazaki, Tadashi Sato, Takashi Haga, Yasuyuki Miyahara, Masaki Ueno, Kei Machida