Patents Examined by William L. Oen
  • Patent number: 6575040
    Abstract: A pressure measuring system has a line through which a fluid (4) flows, the line (3) having a central line section (5) in which, on a flattened outer side (6) of the line (3), a diaphragm is provided. The movements of the diaphragm, which are characteristic of pressure changes, are transmitted to a pressure sensor. In this case, the diaphragm is nondetachably connected to a protrusion (10) which points away from the line (3) and has an extension (12) which is oriented substantially transversely with respect to the longitudinal alignment of the line section (5) and, in a mechanical and simultaneously detachable way, acts on a force sensor as pressure sensor. A pressure measuring system is therefore provided which can be used for reconditioning in the autoclave sterilizer.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: June 10, 2003
    Assignee: Oertli-Instrumente AG
    Inventor: Andreas Dietrich
  • Patent number: 6067848
    Abstract: A portable test apparatus (and associated method) for measuring nonuniformity of a tire/wheel assembly in situ on a wheel bearing hub of a vehicle are characterized by a lightweight assembly of components including, in particular, a probe for monitoring deflections of a surface of the tire/wheel assembly during rotation of the tire/wheel assembly and producing an electrical output indicative of the surface deflections, and an indexing device for producing an electrical output indicative of the rotational position of the tire/wheel assembly during rotation thereof, the indexing device having an attachment mechanism for removable coupling to the tire/wheel assembly.
    Type: Grant
    Filed: March 7, 1997
    Date of Patent: May 30, 2000
    Assignee: Bridgestone/Firestone, Inc.
    Inventors: James F. Siegfried, Donald E. Andrews, William P. Stanfield, Gregory D. Chaplin
  • Patent number: 6016706
    Abstract: In a multiple function type differential pressure sensor including a semiconductor chip having a differential pressure detector for detecting a differential pressure, temperature detector for detecting a temperature, and static pressure detector for detecting a static pressure provided on a semiconductor substrate of a single chip, two or more pairs of differential pressure detectors means are incorporated, and a difference between outputs of the two or more pairs of differential pressure detectors is fetched out.
    Type: Grant
    Filed: December 19, 1996
    Date of Patent: January 25, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Yoshimi Yamamoto, Tomoyuki Tobita, Akira Nagasu
  • Patent number: 5992240
    Abstract: A capacitance-based pressure detecting apparatus detects a pressure applied to a diaphragm based on a capacitance which varies depending on the change in portion of the diaphragm. The pressure detecting apparatus comprises a diaphragm which changes position depending on a differential pressure between a first pressure and a second pressure, a first electrode which is provided opposite a first plane of the diaphragm and forms, together with the diaphragm, a first capacitor, a second electrode which is provided opposite a second plane of the diaphragm and forms, together with the diaphragm, a second capacitor, a third capacitor altering a capacitance according to the first pressure, a detecting unit for detecting the capacitance of the first through third capacitors, and an operation unit for obtaining a pressure applied to the diaphragm based on the capacitance of the first and second capacitors, and amending the obtained pressure based on the capacitance of the third capacitor.
    Type: Grant
    Filed: November 20, 1996
    Date of Patent: November 30, 1999
    Assignee: Fuji Electric Co., Ltd.
    Inventors: Michihiko Tsuruoka, Takahiro Kudo, Masato Takahashi, Nobuhisa Kato, Kimihiro Nakamura, Shuji Tsukamoto
  • Patent number: 5936722
    Abstract: An apparatus and system for determining the angular orientation of an object comprised of a light source directing an optically detectable beam of light at an orientation dependent reflector coupled to an object whereupon a light sensor positioned adjacent the light source detects the reflected optically detectable beam of light from the orientation dependent reflector and determines the centroid of reflection thereon from which the angular orientation of an object throughout a range of rotation about at least one axis of rotation is obtained.
    Type: Grant
    Filed: August 15, 1996
    Date of Patent: August 10, 1999
    Inventors: Brian S. R. Armstrong, Karl B. Schmidt
  • Patent number: 5925824
    Abstract: In a capacitive differential pressure detector, an insulating plate (1) of a fixed electrode is covered with a gold conductive film. A conductive film (2) integrally includes an entire inner area (2a) of a center hole (1a), a square ring-shaped area (2b) surrounding the center hole (1a) on the side opposite to the conductive plate (12) and a band-shaped area (2c) extending therefrom in a centrifugal direction to reach the outer periphery. The conductive film (2) is electrically communicated with the conductive plate at the terminating position of the entire inner area (2a) and also with aluminum films at the terminating position of the band-shaped area (2c). Therefore, the total area of the ring-shaped area (2b) and the band-shaped area (2c) can be decreased so that Cs1+Cs2 is decreased to improve the static pressure span characteristic.
    Type: Grant
    Filed: June 27, 1997
    Date of Patent: July 20, 1999
    Assignee: Fuji Electric Co., Ltd.
    Inventors: Shinichi Soma, Kimihiro Nakamura, Tadanori Yuhara
  • Patent number: 5895859
    Abstract: A pressure sensor comprises two sensor, a casing and a filter. A first sensor is a suction air pressure sensor for measuring the pressure of the air sucked in an internal combustion engine and the like. A second sensor is an atmospheric pressure sensor for measuring the atmospheric pressure. The casing accommodates the suction air pressure sensor and the atmospheric pressure sensor. The filter prevents the infiltration of solid matter and liquid form outside of the puressure sensor, and is mounted on the air introducing part of the atmospheric pressure sensor in the casing.
    Type: Grant
    Filed: July 30, 1997
    Date of Patent: April 20, 1999
    Assignees: Mitsubishi Denki Kabushiki Kaisha, Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Kenichi Sawada, Tateki Mitani
  • Patent number: 5894093
    Abstract: An improved closure for a pressure gauge includes a stem or a sleeve which selectively provides a vent path when set by the end user. The closure device provides an automatic venting if in the normally closed condition by means of an overpressure valve arrangement in the sleeve. Therefore the two functions are incorporated in the single closure device.
    Type: Grant
    Filed: May 12, 1995
    Date of Patent: April 13, 1999
    Assignee: Dresser Industries, Inc.
    Inventors: Walter J. Ferguson, Albert V. Yannella
  • Patent number: 5876118
    Abstract: A calorimeter apparatus includes a facility for rapid cooling of a heating vessel therein. A jacket surrounds the vessel wall. A partition member between the jacket and the vessel wall defines an inlet plenum adjacent the jacket and a spatial gap adjacent the vessel wall. Pressurized cooling gas is conveyed into the inlet plenum after termination of heating the vessel. The partition member has a distributed plurality of orifices such that the gas is jetted through the orifices to impingement cool the vessel wall. The gas is discharged from the spatial gap through an outlet plenum at an end wall of the vessel. The plurality of orifices are distributed in a pattern of varying density across the partition member such that uniform cooling of the vessel wall by the jetted gas is effected.
    Type: Grant
    Filed: December 8, 1995
    Date of Patent: March 2, 1999
    Assignee: The Perkin-Elmer Corporation
    Inventor: Herman Vogel
  • Patent number: 5877417
    Abstract: A device and method for determining the flow rate of gas entrapped fluids delivered in a pulsating flow, such as milk, wherein the invention boasts an improved fluid level detection arrangement for determining flow rates with improved accuracy, and an improved temperature sensing arrangement for determining the temperature of the gas entrapped fluid with improved accuracy.
    Type: Grant
    Filed: March 3, 1997
    Date of Patent: March 2, 1999
    Assignee: Compucon Corporation
    Inventors: Lawrence C. Arvidson, Duane A. Brown
  • Patent number: 5852343
    Abstract: A fluorescent lamp having an adjustable color temperature comprising at least two elongated fluorescent discharge tubes (10 & 20), one tube (10) having a larger diameter than the other (20). The tubes (10 & 20) are assembled into a single unit. A groove (12) is disposed within the larger tube (10) and runs parallel to the longitudinal axis. The smaller diameter tube (20) is snugly nested within the groove (12) and in intimate contact with the larger diameter tube (10). The larger diameter tube has a phosphor coating producing one color temperature and the smaller diameter tube produces a different color temperature. Preferably, the larger tube has a phosphor coating that emits a low color temperature of K. or below and the smaller tube's phosphor coating emits a high color temperature of greater than 10, K. A controller divides the power to the two tubes such that a variable color temperature is produced at nearly constant total power.
    Type: Grant
    Filed: December 23, 1996
    Date of Patent: December 22, 1998
    Assignee: Matsushita Electric Works Researches and Development Laboratory Inc.
    Inventors: Jagannathan Ravi, Michael J. Shea, Joseph Connolly, Munisamy Anandan
  • Patent number: 5850045
    Abstract: Wiring patterns 50, 60 are formed in zigzag fashion on respective ones of both sides of a flexible insulating sheet 70. The wiring patterns 50, 60 include linear portions 50C, 60C and arcuate portions 50A, 60A, respectively. The linear portions 50C and the linear portions 60C overlap. The arcuate portion 60A is situated between two arcuate portions 50A that neighbor each other. One end of each of the wiring patterns 50, 60 is connected to a detection circuit 75 which detects a change in inductance. The other ends of the wiring patterns 50, 60 are connected together through a through-hole 70A. The sheet 70 is disposed in such a manner that the linear portions 50C, 60C will perpendicularly intersect the direction of stress, which is to be measured, acting upon a member 80 undergoing measurement. The sheet 70 and the wiring patterns 50, 60 construct a detection coil 71. An AC excitation current flows through the detection coil 71.
    Type: Grant
    Filed: June 26, 1995
    Date of Patent: December 15, 1998
    Assignee: Omron Corporation
    Inventors: Koosuke Harada, Ichiro Sasada, Fumitaka Koga, Nobutomo Matsunaga, Shuichi Misumi
  • Patent number: 5850125
    Abstract: A pseudospark switch including an insulator which can withstand high temperature plasma and is arranged between both electrodes thereof, thereby being capable of preventing the electrodes from being damaged while allowing a large amount of charge to flow instantaneously. The high power pseudospark switch includes first and second hollow electrodes facing each other, the hollow electrodes being open at facing ends thereof and closed at opposite ends thereof, respectively, an inert gas inlet port provided at the closed end wall of the first hollow electrode, a vacuum pump connecting port provided at the closed end wall of the second hollow electrode, a first electrode arranged at the open end of the first hollow electrode, a second electrode arranged at the open end of the second hollow electrode in such a manner that it faces the first electrode, and an insulator interposed between the first and second electrodes.
    Type: Grant
    Filed: November 27, 1996
    Date of Patent: December 15, 1998
    Assignee: Soosan Special Purpose Vehicle Co., Ltd.
    Inventors: Hwan-Young Jae, Byung-Ho Sung, Kyu-Hwan Lim, Hyun-Kuk Shin, Jae-Hyun Sim
  • Patent number: 5847286
    Abstract: The invention concerns a magnetically inductive flow meter for flowing media with a tube consisting of ceramic material and used as a measurement line, a magnet to produce a magnetic field running at least essentially perpendicular to the tube axis, at least two measuring electrodes arranged preferably perpendicular to the tube axis and preferably perpendicular to the direction of the magnetic field and at least two screening or shielding electrodes shielding the measuring electrodes from outer electrical fields, wherein the measuring electrodes and the screening or shielding electrodes are placed outside the tube.
    Type: Grant
    Filed: April 4, 1997
    Date of Patent: December 8, 1998
    Assignee: Krohne Messtechnik GmbH & Co. KG
    Inventors: Jurgen Winfried Klein, Peter Dullenkopf, Arnd ten Have, Andreas Lenniger, Andreas Stratmann
  • Patent number: 5844141
    Abstract: A pressure sensor device 10 comprises three layers 11a, 12 and 11b of silicon, fusion-bonded together. The outer layers 11a and 11b form a sealed housing around the central layer 12 to which they are bonded, and in use a cavity 13 between the housing 11a, 11b and central layer 12 is evacuated. The sensor device 10 is normally placed inside a component for containment of a pressurised fluid (not shown). Due to the cross-sectional shape of the device 10, pressure exerted by the fluid causes the layers 11a and 11b to flex inwardly in the region of minimum cross-sectional dimension and thereby outwardly in the region of maximum cross-sectional dimension, thereby is placing under tension a balanced twin beam vibratable element 16 on the central layer 12. The tension across the vibratable element affects its resonant frequency of vibration.
    Type: Grant
    Filed: November 29, 1996
    Date of Patent: December 1, 1998
    Assignee: Solartron Group Limited
    Inventor: James Wolryche Stansfeld
  • Patent number: 5844521
    Abstract: A method is provided for determining the geolocation of a mobile terminal within a telecommunications satellite system. The system supports first and second forward communications links from first and second earth stations through first and second satellites to a common mobile terminal. The method includes receiving, at the mobile terminal, first and second forward link communications signals from the first and second earth stations and, based thereon, obtaining synchronization differential data. The synchronization differential data may include timing and frequency synchronization data necessary to maintain synchronization between the first and second communications at the mobile terminal. The mobile terminal transmits the synchronization differential data to the first earth station over the return link. The first earth station receives communications signals from the mobile terminal and based thereon calculates return link synchronization data.
    Type: Grant
    Filed: December 2, 1996
    Date of Patent: December 1, 1998
    Assignee: TRW Inc.
    Inventors: Scott A. Stephens, Carl F. Reisig, Arthur L. Garrison
  • Patent number: 5844131
    Abstract: In an apparatus for measuring the tire pressure in a pneumatic tire of a vehicle by means of a measurement value sensor, which is acted upon by the tire pressure, on the rim bed (12) of a rim (10), which accommodates a tire valve (20), for the pneumatic tire, connected to the tire valve (20) is a signal housing (44) which is associated with the rim bed (12) and which includes an electronic sender means as the measurement value sensor for the tire pressure. The signal housing (44) is connected to the tire valve (20) by a hollow screw (40) which engages into the valve bore (28) and is adjustable relative thereto in such a way that the tire valve/signal housing combination can be used for equipping different rim cross-sections. That purpose is also served by base elements (52) which project from the underneath surface of the signal housing (44) and which sit on the rim bed (12) and which with the suspension point on the screw (40) form a multi-point mounting configuration.
    Type: Grant
    Filed: May 25, 1996
    Date of Patent: December 1, 1998
    Assignee: Alligator Ventilfabrik GmbH
    Inventors: Volker Gabelmann, Rolf Reinhardt
  • Patent number: 5844353
    Abstract: A coupling structure of a convergence correction mechanism including a magnet set has a connecting member with an extension part for fitting axially onto one of a cathode ray tube and a neck part of a coil separator on the cathode ray tube and with an insertion part extending axially to a tip end from one axial end of the extension part for receiving the magnet set.
    Type: Grant
    Filed: January 13, 1997
    Date of Patent: December 1, 1998
    Assignee: Samsung Electro-Mechanics Co.Ltd
    Inventor: Sang Wook Nam
  • Patent number: 5841027
    Abstract: A system for dispensing mixed beverages has a processor to control the liquid dispensed at an outlet in dependence upon the demand of a user as input to a keypad. Carbonated water is fed to the outlet by way of tubing and a syrup concentrate is also fed therto by way of a tubing. The water and syrup is mixed in the correct quantities by way of respective proportional valves which adjust the quantity or flow rate of the two consituents fed through a mixing chamber in accordance with flow rate readings provided to the processor by respective flow transducers. The flow transducers measure the speed of flow ultrasonically and are able to provide flow rate readings at a rate of 50 per second. The proportional valves are able to adjust the quantities fed to the mixing chamber at a similar rate such that the mix can be reliably determined even if there are transitory pressure drops or viscosity changes in the system.
    Type: Grant
    Filed: September 24, 1997
    Date of Patent: November 24, 1998
    Assignee: AZTEC Development Ltd
    Inventor: Michael F. Scarffe
  • Patent number: 5841029
    Abstract: A force indicating device for monitoring acceleration forces developed during the motion an object. The device, when attached to a swinging or rotated sports implement, can be used to improve the speed and consistency with which the implement is swung.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: November 24, 1998
    Assignee: Dynamis, Inc.
    Inventor: David W. Luking