Patents Examined by Charles Frankfort
  • Patent number: 4722611
    Abstract: An apparatus for testing the quench-cooling properties of a liquid quenchant includes a thermistor that is adapted to be immersed in the liquid to be tested. An electrical potential is applied across the thermistor, which is contained in one leg of an electrical bridge circuit. A first timer controls the duration of time during which the voltage is applied to the bridge circuit. A voltmeter is connected across the bridge circuit for indicating changes in the bridge balance due to changes in the resistance of the thermistor. The thermistor changes resistance in accordance with the thermal conductivity of the liquid in which it is immersed. Therefore, the quenchant properties of the liquid being tested are determinable by comparing the voltage output of the bridge when the thermistor is immersed in the test liquid with at least one reference voltage output obtained by immersing the thermistor in a reference liquid quenchant. Each test is conducted for the same amount of time, which is controlled by the timer.
    Type: Grant
    Filed: March 13, 1986
    Date of Patent: February 2, 1988
    Assignee: Union Carbide Corporation
    Inventor: David H. Hultgren
  • Patent number: 4722610
    Abstract: A monitor for determining a buildup of slag on the flame side of water cooled walls of coal fired steam generators and other heat transfer surfaces. This monitor has a body to be positioned in an orientation similar to the water tubes of the steam generator (or other heat transfer surfaces) so that any deleterious buildup on the surfaces will also be effected upon the exterior of the monitor. Positioned within the body of the monitor is a temperature sensor, such is a thermocouple having at least a hot junction. Also positioned within the body and proximate the sensor (e.g., thermocouple) is a heater unit having a high temperature portion located proximate the hot junction. In this manner, when the heater is energized, the hot junction is raised to a preselected temperature. By monitoring the time constant of temperature change of the sensor with current to the heater being cycled, information as to the degree of buildup on the exterior of the body can be obtained.
    Type: Grant
    Filed: March 7, 1986
    Date of Patent: February 2, 1988
    Assignee: Technology For Energy Corporation
    Inventors: Francis E. Levert, James C. Robinson, Jerry Golden
  • Patent number: 4723057
    Abstract: The present invention relates to a multiple function control stalk for a vehicle having a linearly moveable wiper delay rheostat. The control stalk includes a plurality of switches for controlling various devices on the vehicle, such as the windshield wiper and washer controls and vehicle speed or cruise controls. A windshield wiper delay switch is provided on the control stalk which includes a rheostat having an arm which is linearly moveable in a direction generally parallel to the longitudinal axis of the control stalk. The wiper delay rheostat is disposed slightly above the body of the control stalk for easy viewing and manipulation by the vehicle driver. Movement of the arm of the wiper delay rheostat varies the electrical resistance thereof and, consequently, causes an electrical control circuit to alter the period of delay between successive cycles of operation of the windshield wipers.
    Type: Grant
    Filed: September 10, 1985
    Date of Patent: February 2, 1988
    Assignee: Dana Corporation
    Inventor: Wendell C. Lane, Jr.
  • Patent number: 4721057
    Abstract: An indexing device provides a bookmark for a reader to indicate the reader's place in the book for successive reading sessions. The device includes a flexible prong held in position between two leaves of the book from an edge location by an arm member. The arm member is preferably pivotally secured to a base that releaseably attaches to the book. Several embodiments showing different mounting structures are described.
    Type: Grant
    Filed: March 19, 1986
    Date of Patent: January 26, 1988
    Inventor: Anthony E. Vigil
  • Patent number: 4719703
    Abstract: For accurately determining the position of a measuring head 14, a multicoordinate measuring machine has an additional measuring device, which essentially is formed by a scanning head 19 having a measuring probe 20, and inserted in a beam 16. The position of a cross arm 6 in a distance A is determined by means of the measuring probe 20 and is passed on over an amplifier 22 to a computer 25 for control and display purposes. The coordinate measuring machine operates with only one length scale 5. The cross arm 6 is supported at its ends and without play on carriages 11 and 12, which can be moved in the X direction in guiding systems 3 and 4, which are arranged parallel to each other.
    Type: Grant
    Filed: April 9, 1986
    Date of Patent: January 19, 1988
    Assignee: Mauser-Werke Oberndorf GmbH
    Inventors: Gunther Ross, Volker Schwarz
  • Patent number: 4719797
    Abstract: In the testing of explosive munitions, particularly sub-munitions such as self-forging fragment and shaped charge devices, the munitions are spun about a longitudinal axis to simulate a spin-stabilized munition. An assembly for spinning the munition includes a stationary hub, a rotating hub and an arrangement for mounting the munition concentrically on the hub. A detonator mount positions a detonator and an explosive booster on the axle near the explosive. The stationary mounting of the detonator and booster allows a safer disarming of the munition in the event of misfire.
    Type: Grant
    Filed: July 16, 1986
    Date of Patent: January 19, 1988
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence
    Inventors: Chris A. Weickert, Thomas A. Storrie
  • Patent number: 4718777
    Abstract: In a temperature measurement system using a thermocouple connected to a pair of circuit wires coupled to a voltmeter for providing an output reading, an isothermal block (48) formed of alumina ceramic contains a series of openings (58-66) in linear juxtaposition. Metal connectors (68) located in two of the openings to interconnect the thermocouple and printed circuit wires of a circuit board (52) establish a reference junction. A temperature sensor (50), preferably a transistor, in a third opening measures the temperature of the isothermal block (48) to compensate the output reading for error created by the reference junction. The connectors (68) are in resilient contact with the interior wall of the isothermal block (48) to maintain good heat conductivity between the connectors and the temperature sensor (50). Portions of the connectors (68) extending outside the isothermal block (48) retain the isothermal block (48) to the circuit board (52).
    Type: Grant
    Filed: February 28, 1986
    Date of Patent: January 12, 1988
    Assignee: John Fluke Mfg. Co., Inc.
    Inventors: Steven T. Mydynski, John M. Redfield, Jr., Bryan L. Sparrowhawk, Alfred T. Volberding
  • Patent number: 4718776
    Abstract: A portable monitoring device and method are disclosed for monitoring a predetermined parameter, such as temperature. The portable device, or probe, is miniaturized and includes a sensor and an associated electronic unit encased within a housing. The sensor senses the parameter to be monitored and produces signals indicative thereof, while the electronic unit includes a converter for converting signals received in analog form to digital signals, a memory for storing the digital signals, and a microprocessor for controlling the sensing and signal storing operations. The probe is a self-sufficient unit, is electrically isolated while at the monitoring area, and is caused to operate in an active mode during periods of sensing and storing of information in memory that requires low power with even lower power consumption being achieved when the probe is inactive.
    Type: Grant
    Filed: November 17, 1986
    Date of Patent: January 12, 1988
    Assignee: Ball Corporation
    Inventors: Jerry R. Gilland, Christopher L. Sweeney, Ronald D. Wertz
  • Patent number: 4716416
    Abstract: An antenna system for a television reception only antenna includes an integral declination adjustment comprising an upper and lower curvilinear surface as part of the superstructure supporting the main reflector dish with an upper and lower pad rotatably mounted to a pivot tube providing surfaces matching the curvilinear surfaces against which the main reflector dish rests. Slots and holes are cut into the matching surfaces and a pair of nut and bolt assemblies extending through the slots and holes secure the surfaces once the proper declination angle has been achieved.
    Type: Grant
    Filed: March 28, 1985
    Date of Patent: December 29, 1987
    Assignee: Satellite Technology Services, Inc.
    Inventors: Edward W. Smith, Gene Garfinkle
  • Patent number: 4713888
    Abstract: A measuring tape (10) has indicia thereon for measuring a patient, the indicia representing increments of a physical treatment or physiological value based upon a correlation between the length of a patient and that value. Drug dosages, tube sizes and medical equipment settings, such as defibrillators, are examples of the type of values which can correlated to body length and placed on the tape (10).
    Type: Grant
    Filed: September 23, 1986
    Date of Patent: December 22, 1987
    Inventor: James B. Broselow
  • Patent number: 4712505
    Abstract: Apparatus and method are provided for sensing the presence of product and/or water in the annular space of a double wall storage tank. The apparatus includes both a product sensing element and a water sensing element that are operatively associated with each other to control the compression of a spring. The spring is operatively connected to a colored marker which is able to move from within an opaque tube to within a transparent tube using the force of the spring. When the product sensing element is contacted by product or the water sensing element is contacted by water so that the respective sensor weakens, the spring force is used to move the colored marker so that it is within the transparent tube. In such a position, the colored marker becomes visible, indicating that product and/or water are present in the annular space of the double wall storage tank.
    Type: Grant
    Filed: October 18, 1985
    Date of Patent: December 15, 1987
    Assignee: In-Situ, Inc.
    Inventor: H. Kent Wainwright
  • Patent number: 4712504
    Abstract: A tennis scoring device is disclosed comprising an elongated body member having a longitudinal axis, with a visible tennis scoring indicia secured on the top surface of the body member and extending along the longitudinal axis thereof. The indicia strip is divided into a plurality of duplicate scoring segments representing the scores of the player and the opponent. A pair of slide members are resiliently slidably mounted on the edges of the body member and extend over the indicia strip. An aperture in each of the slide members provides visible access to a given indicia segment. The width of the body member is greater than the normal width of the slide members so that the slide members are slightly expanded upon being mounted on the body member to resiliently hold the slide members in position on the body member.
    Type: Grant
    Filed: April 7, 1986
    Date of Patent: December 15, 1987
    Inventors: Marilyn J. Zarley, Donald H. Zarley
  • Patent number: 4711587
    Abstract: A method of and an apparatus for measuring the softening point of a vitreous specimen in which the viscosity variation as a temperature function is determined by applying torsion to the specimen and measuring the transmitted torque as a function of temperature.
    Type: Grant
    Filed: July 21, 1986
    Date of Patent: December 8, 1987
    Assignee: Cselt-Centro Studi e Laboratori Telecomunicazioni S.p.A.
    Inventor: Giuseppe Cocito
  • Patent number: 4710778
    Abstract: A modular earth station for communicating with a satellite comprises a frame which is adapted to be installed in an inclined roof for adjustably mounting therein a concave antenna covered by a rigid canopy.
    Type: Grant
    Filed: August 7, 1985
    Date of Patent: December 1, 1987
    Inventor: Mitchell C. Radov
  • Patent number: 4709651
    Abstract: A whistle having two chambers of different size so that each is capable of generating a sound different to that generated by the other. Each chamber is elongate and has an open mouth located at the same end of the whistle body. A mouthpiece extends angularly from that end of the body and has two open-ended passages extending therethrough, each of which has an open inner end located adjacent a respective one of the chamber mouths. The two passages are located in close side by side relationship and are arranged so that a stream of air emerging from their respective inner ends passes across a respective one of the two chamber mouths so that the two chambers generate sound simultaneously. The two chambers generate relatively high and low frequency sound respectively.
    Type: Grant
    Filed: August 13, 1986
    Date of Patent: December 1, 1987
    Assignee: W.A. Deutsher Proprietary Limited
    Inventor: Mark A. Lance
  • Patent number: 4709652
    Abstract: A pneumatic sweep generator for use as an audio source in tests near vocal frequency ranges. A horn, whose volume may be controlled by air pressure and whose tone may be controlled by air velocity, is connected to an air supply in a dual-circuit arrangement. Mechanical control devices, such as manual and pressure release valves, are located within the circuit to provide for tone and volume control. A reciprocating air cylinder continuously varies the air velocity within the horn to sweep the frequencies in an adjustable manner. Electromagnetic interference is totally eliminated by a complete absence of electrical devices in either the device or in necessary controls.
    Type: Grant
    Filed: January 16, 1985
    Date of Patent: December 1, 1987
    Assignee: The United States of America as represented by the director of the National Security Agency
    Inventors: Harold E. Douglass, Jr., Joseph W. Mahaffee, III
  • Patent number: 4709579
    Abstract: Nuclear fuel rods are processed to remove moisture in an oven which is evacuated. Measurement of the moisture content in each of a plurality of nuclear fuel rods (typically 44) is carried out by condensing the vapor derived from one randomly-selected control rod in a nitrogen-liquid cooled trap, collecting the condensed vapor in magnesium perchlorate, and determining the weight of the collected moisture. Moisture from the one fuel rod is condensed, collected and has its weight determined repeatedly in increments until the difference between the weight of a last increment and of a just preceding increment is less than 1 mg. (The permissible content is 6 mg. or less.) The rods have small perforations through which the vapor can escape. The evacuating system includes a main evacuating channel connected directly to the oven and a branch channel connected to the one fuel rod through the cold trap.
    Type: Grant
    Filed: August 16, 1985
    Date of Patent: December 1, 1987
    Assignee: Westinghouse Electric Corp.
    Inventors: Merle A. Parker, Richard A. Pregnall, Hassan J. Ahmed
  • Patent number: 4709653
    Abstract: A mechanical fluid indicator 10 of the type comprising an endless belt 18 having a float 22 and marking elements 20 affixed thereto extending about top and bottom pulleys 16 comprises a tube 12 in which the entire mechanism is mounted. In this respect, holes are machined in the tube's walls at opposite ends thereof and first and second two-piece shafts 28 and 36 are "snapped" into the holes at the opposite ends for respectively mounting the pulleys therein so that the belt and its attachments are mounted in the tube.
    Type: Grant
    Filed: March 29, 1983
    Date of Patent: December 1, 1987
    Inventor: Lothar H. Salomon
  • Patent number: 4708495
    Abstract: A metal surface temperature monitor is disclosed. The monitor comprises a rotating sensor head including two wheels fabricated from thermocouple materials and adapted to ride on the surface of the metal to measure the temperature thereof, a converter for converting the thermal EMF generated by the thermocouple to a low frequency coded signal, a transformer having a stationary primary winding and a secondary winding which is free to rotate with the sensor head, a modulating circuit associated with the primary and secondary windings of the transformer for transferring the frequency coded signal from the secondary to the primary winding of the transformer, and means connected to the primary winding of the transformer for demodulating the frequency coded signal to provide an indication of the temperature of the moving metal surface.
    Type: Grant
    Filed: January 21, 1986
    Date of Patent: November 24, 1987
    Assignee: Noranda Inc.
    Inventors: Frank Kitzinger, Vladimir M. Labuc
  • Patent number: 4709241
    Abstract: A dish antenna frame having an extruded central hub, an outer rim and a plurality of intermediate extruded and bent arcuate tubular spokes, mounted on peripheral, radially extending fingers of the central hub and wherein each spoke mounting finger has extruded retention teeth and each tubular spoke has internal extruded teeth for rigidly retaining the spoke on the mounting finger.
    Type: Grant
    Filed: October 31, 1985
    Date of Patent: November 24, 1987
    Assignee: N.S.M. Corporation
    Inventor: Paul R. Cusson