Bourdon Patents (Class 73/732)
  • Patent number: 11555825
    Abstract: A pitot probe assembly that is formed from modular, replaceable components, and is flexible. The configuration of the pitot probe assembly allows the pitot probe assembly to absorb and/or dissipate impact energy, and the modular, replaceable components allow for quick and easy repair of the pitot probe assembly. The pitot probe assembly can be configured as a total pressure pitot probe assembly or as a pitot static probe assembly.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: January 17, 2023
    Assignee: Sentera, Inc.
    Inventors: Matt Skelton, Todd Colten, Matthew Finn
  • Patent number: 11371901
    Abstract: A pressure gauge includes a hollow tube, a drive element, an anti-leak spring, a resilient element, and a cap. The hollow tube includes an accommodation chamber, a connector having a conduit, and a display unit. The drive element includes a protection unit, a first open segment, a second distal segment, a receiving portion, a hollow extension, and a protrusion. An anti-leak spring is received in the hollow extension of the drive element and abuts against the protrusion and the protection unit. The resilient element is received in the receiving portion. The cap includes a seat, a push bolt, and multiple passages. The accommodation chamber has a first fixing section and a second fixing section, a diameter of which is different from that of the first fixing section. The hollow tube further includes a tilted surround section and at least one discharge orifice.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: June 28, 2022
    Inventors: Wen-San Chou, Cheng-Hsien Chou
  • Patent number: 9995605
    Abstract: A Bourdon tube pressure gauge includes: a Bourdon tube; a rotary piece rotatably attached to a first shaft arranged near a tip of the Bourdon tube; a pointer including a second shaft arranged on a side facing an outer periphery of the fan-shaped portion of the rotary piece; a first permanent magnet provided on an outer peripheral surface side of a fan-shaped portion of the rotary piece; a second permanent magnet provided at the second shaft. An outer peripheral surface of the first permanent magnet and an outer peripheral surface of the second permanent magnet each has N pole and S pole alternately magnetized at equal pitches. A magnetic member configured to relax force by which the second permanent magnet is attracted to the first permanent magnet is provided across the second permanent magnet from the first permanent magnet.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: June 12, 2018
    Assignees: PROSPINE Co., Ltd., OKADA KEIKI MFG CO., LTD.
    Inventors: Hidetoshi Konno, Manabu Oonuma, Nobutaka Okada
  • Patent number: 9897505
    Abstract: A process variable indicator is provided. The process variable indicator includes a process variable sensor having an electrical characteristic that varies with the process variable. Measurement circuitry is coupled to the process variable sensor and is configured to provide an indication relative to the electrical characteristic. A processor is coupled to the measurement circuitry and is configured to compute a process variable based on the indication and determine, among a plurality of ranges, which range the process variable is within. The processor generates a local visual output based on the process variable and the determined range. A method of visually indicating a process variable is also provided.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: February 20, 2018
    Assignee: Rosemount Inc.
    Inventor: Robert C. Hedtke
  • Patent number: 9786151
    Abstract: Pressure measuring device, comprising a connector extending along a longitudinal direction around a central longitudinal axis, the connector comprising a first longitudinal end intended to be fixed to an element containing pressurized gas, and a second longitudinal end provided with a diaphragm intended to be subjected to the pressure, the diaphragm comprising a pressure sensor of the piezoelectric type generating an electrical signal representative of the pressure measured, the pressure sensor being connected to an electronics board comprising electronic logic for processing the electrical signal of the sensor, the device furthermore comprising a transmission/reception antenna of the radiofrequency type fitted on the electronics board in order to receive and transmit data from and to the electronic logic, the electronics board being housed in a protective casing fixed to the connector, wherein the antenna is located on or adjacent to an axis passing through the central longitudinal axis of the connector.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: October 10, 2017
    Assignee: L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude
    Inventor: Guillaume Roberge
  • Patent number: 8893553
    Abstract: The present disclosure provides for systems and methods for fabricating measuring devices, e.g., a pressure gauge, thermometer or the like. More particularly, the present disclosure provides for systems and methods for fabricating measuring device assemblies having zero/span adjustable linkage movements (e.g., zero/span adjustable four-bar linkage movements). In general, the present disclosure provides for measuring device assemblies having zero/span adjustable linkage movements, wherein the zero/span adjustable linkage movements do not adversely affect linearity of the measuring device assemblies, and wherein the measuring device assemblies are rugged and able to withstand certain extreme shock and/or vibration conditions.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: November 25, 2014
    Assignee: Ashcroft, Inc.
    Inventors: Tomiyuki Kuramoto, Yoshikazu Kaneko
  • Publication number: 20140318260
    Abstract: A pressure indication device is provided to connect to an inflation mechanism of an inflation machine. The pressure indication device includes a hollow tubular body in which a push bock is received in a manner of being movable by a pressure conducted into the hollow tubular body and connected to a linearly movable plate and biased by an elastic element. The hollow tubular body has a tubular wall forming a pressure relief hole at a preset position corresponding to a maximum allowable pressure level. A scale bar having graduations is provided along a moving path of the plate. The elastic force of compression of the elastic element serves as a reaction force (restoration and returning force) for the linear movement of the plate. A pressure conducted into the hollow tubular body from the inflation machine drives the plate to move and thus indicates the pressure level.
    Type: Application
    Filed: April 25, 2013
    Publication date: October 30, 2014
    Inventor: CHI-WEN CHEN
  • Patent number: 8844363
    Abstract: Fabry-Perot and Bragg grating optical measuring principles are combined with a torsional stress sensing mechanism that converts torque applied in one fluid environment to force exerted in a second environment to measure extreme environmental parameters such as pressure in a petroleum producing borehole.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: September 30, 2014
    Inventor: Leroy C. Delatorre
  • Publication number: 20140216164
    Abstract: A manometer comprises a manometer body with an indicating scale with graduated markings of pressure units and a safety vent, a plunger with a annular groove and a tinted O-ring a cap mount, a primary box spring and an auxiliary box spring. By means of the tinted O-ring and the indicating scale with graduated markings of pressure units, the manometer innovatively functions as indication of air pressure measured. By means of the primary box spring and auxiliary box spring, the manometer precisely measures overall air pressure in combination of coarse air pressure variation responded by the primary box spring and fine air pressure variation responded by the auxiliary box spring. By means of the safety vent disposed on the peripheral of manometer body and the tinted O-ring on the plunger, the manometer provides a safety proactive means for input compressed air.
    Type: Application
    Filed: January 21, 2014
    Publication date: August 7, 2014
    Inventor: Wen-San CHOU
  • Patent number: 8776606
    Abstract: A pressure measuring device includes a partially coiled tube having a closed end and an opposite open end. The closed end is rolled and set into a coiled configuration. The device also includes a partially coiled tube supporting structure having a pressure indicating scale. The supporting structure holds the partially coiled tube such that the open end of the tube is in communication with a fluid whose pressure is to be measured. Pressure applied by the fluid causes the tube to unroll and the closed end of the tube to be visibly displaced relative to the pressure indicating scale by a distance related to the pressure applied by the fluid.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: July 15, 2014
    Inventor: Alexander H. Slocum
  • Publication number: 20130255564
    Abstract: An indicator gauge has a housing with a front face and a sensor mounted in the housing. The front dial face has a first sensor indicator thereon for displaying an amount detected by the sensor. The housing has a side wall with a second sensor indicator shown thereon for displaying the amount detected by the sensor.
    Type: Application
    Filed: March 30, 2012
    Publication date: October 3, 2013
    Applicant: Numatics, Incorporated
    Inventor: Donald Morse Swanson
  • Publication number: 20120312100
    Abstract: A pressure measuring device includes a partially coiled tube having a closed end and an opposite open end. The closed end is rolled and set into a coiled configuration. The device also includes a partially coiled tube supporting structure having a pressure indicating scale. The supporting structure holds the partially coiled tube such that the open end of the tube is in communication with a fluid whose pressure is to be measured. Pressure applied by the fluid causes the tube to unroll and the closed end of the tube to be visibly displaced relative to the pressure indicating scale by a distance related to the pressure applied by the fluid.
    Type: Application
    Filed: December 8, 2011
    Publication date: December 13, 2012
    Inventor: Alexander H. Slocum
  • Patent number: 8156818
    Abstract: A bourdon tube pressure gauge includes a joint which is made of resin and attached to a pressure container, and a bourdon tube which is made of metal and provided with a base end part fixed to the joint. The joint is formed with a fixing hole to which the base end part of the bourdon tube is inserted and adhesively fixed, and a side face of the fixing hole is formed with a recessed part which is recessed in a flattened direction of the base end part of the bourdon tube that is inserted into the fixing hole. Further, the recessed part is formed toward a depth side of the fixing hole and at least a part of the recessed part which is formed on an inner side of the fixing hole is formed wider in the flattened direction than an opening part of the fixing hole which is an insertion port of the bourdon tube.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: April 17, 2012
    Assignee: Fuji Burudon Mfg. Co., Ltd.
    Inventor: Teruaki Miyasaka
  • Patent number: 8069731
    Abstract: A service gauge for determining refrigerant pressure and the saturated vapor equivalent temperature, or other parameters, for a refrigerant in an HVAC system. In one embodiment, the service gauge employs a bourdon tube with at least one attached strain gauge to sense the refrigerant pressure and produce an electronic pressure signal. In another embodiment, a magnet and rotary position sensor produces an electronic signal proportional to the refrigerant pressure. The electronic pressure signal from the output of the strain gauge or the rotary position sensor is connected to a microprocessor, which calculates and displays the refrigerant pressure, the saturated vapor equivalent temperature for a variety of refrigerants, produces instantaneous and time lapsed representations of those parameters, and other parameters of the refrigerant.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: December 6, 2011
    Assignee: Diversitech Corporation
    Inventor: Charles Barry Ward
  • Publication number: 20110203382
    Abstract: A gauge for a pressure measuring device, the gauge includes a gauge body disposed at the front of the pressure measuring device. The gauge body having a graduated circle, a range display window formed on a graduated circle and a pointer to indicate a scale on the graduated circle corresponding to a measured pressure by the pressure measuring device. A base plate disposed at the rear of the gauge main body and viewed through the range display window, and first and second gauge fans rotatably disposed on the base plate to set the pressure range of an upper limit value and a lower limit value on the graduated circle.
    Type: Application
    Filed: October 31, 2007
    Publication date: August 25, 2011
    Applicant: TPC MECHATRONICS CORP.
    Inventors: Gi Gong Kim, Hyung Min Kim, Sung Sub Oh
  • Publication number: 20110138922
    Abstract: A scuba diving air tank gauge, wherein a casing made of plastic material has a transparent cover, and a radial inlet fitting integral with the casing and also made of plastic material, and houses a Bourdon gauge device, a closed metal tube of which is wound into a coil and has a straight inlet end portion that engages a conduit in the radial inlet fitting in sliding manner; the conduit having a cavity housing at least one O-ring; and the straight inlet end portion engaging the conduit and the cavity in axially sliding manner, and extending in fluidtight manner through the O-ring.
    Type: Application
    Filed: June 1, 2009
    Publication date: June 16, 2011
    Inventor: Emilio Allemano
  • Patent number: 7849750
    Abstract: A sensing apparatus of a Broudon pressure gauge is disclosed, which comprises a magnet which has a N pole and a S pole at one end between both ends of the shaft which its connected with the displacement gear and rotates; a sensing unit which is provided in the body at a portion corresponding to the magnet and is disposed on at least three portions in circular directions and includes an AMR sensor or hall sensor for sensing the rotation value of the magnet; and a display control unit which receives a sine signal value and a cosine signal value among phase signal values from the sensors of the sensing unit and corrects the phase values and outputs to the LCD.
    Type: Grant
    Filed: May 15, 2007
    Date of Patent: December 14, 2010
    Assignee: Metachem Inc.
    Inventor: Deok-Jae Lee
  • Publication number: 20100201585
    Abstract: A measuring instrument for measuring a measurand of an object under measurement is provided. The measuring instrument includes a functional member for converting the measurand into a metered value, a housing and an antenna, in which at least part of the housing and/or part of the functional member form a component part of the antenna.
    Type: Application
    Filed: February 5, 2010
    Publication date: August 12, 2010
    Applicant: WIKA ALEXANDER WIEGAND GMBH & CO. KG
    Inventors: Michael Gawronski, Joachim Ciba, Achim Gareus
  • Patent number: 7730787
    Abstract: The bourdon tube pressure gauge includes: a joint which is made of the resin and is attached to a pressure container; and a bourdon tube which is made of metal and has a rear end fixed to the joint. The joint comprises a fixation hole into which the rear end of the bourdon tube is inserted to be fixed by bonding, and an inside of the fixation hole is more widened than an opening of the fixation hole which serves as an insertion port for the bourdon tube.
    Type: Grant
    Filed: November 24, 2008
    Date of Patent: June 8, 2010
    Assignee: Fuji Burudon Mfg. Co., Ltd.
    Inventor: Teruaki Miyasaka
  • Publication number: 20100132472
    Abstract: A pressure sensor includes a fill tube which is arranged to couple to a process pressure. A sensor is coupled to the fill tube and is configured to measure pressure of fluid in the fill tube as a function of a change of a physical property of the fill tube. Circuitry is provided to measure pressure using the pressure sensor, and to measure pressure based upon the change of the physical property of the fill tube.
    Type: Application
    Filed: December 3, 2008
    Publication date: June 3, 2010
    Inventors: Charles R. Willcox, Robert C. Hedtke, Liangju Lu
  • Patent number: 7716990
    Abstract: A self contained internally illuminated diagnostic gauge used to display the magnitude of physically measured quantities in low or no light areas. The diagnostic gauge uses mechanical gauge needles to indicate the magnitude of the measurements on a dial. The dial is illuminated internally with a thin and flexible electroluminescent panel layer. This electroluminescent layer emits photons of light in response to a applied electrical energy. The electrical energy is supplied from a small battery system and driven through electronic circuitry both of which are contained inside of the gauge shell housing unit. The gauge shell has a removable battery cover that enables access to the power supply and the electronic drive circuitry of the device.
    Type: Grant
    Filed: April 2, 2008
    Date of Patent: May 18, 2010
    Assignee: CPS Products, Inc.
    Inventor: Jose Sacerio
  • Patent number: 7685882
    Abstract: A pressure gauge for determining refrigerant pressure and the saturated vapor equivalent temperature for a refrigerant in an HVAC system. The pressure gauge employs a bourdon tube with at least one attached strain gauge to sense the refrigerant pressure and produce an electronic pressure signal. The electronic pressure signal from the output of the strain gauge is attached to a microprocessor, which calculates and displays the refrigerant pressure, the saturated vapor equivalent temperature for a variety of refrigerants, and produces instantaneous and time lapsed representations of those parameters.
    Type: Grant
    Filed: September 9, 2008
    Date of Patent: March 30, 2010
    Assignee: Diversitech Corporation
    Inventor: Charles Barry Ward
  • Patent number: 7574920
    Abstract: A pressure gauge is provided for monitoring pressure within a reservoir, such as air within a vehicle tire. The gauge is particularly configured to allow it to remain upon a valve stem of the tire even when the tire is in operation. A receiver of the gauge can be coupled to the valve stem. A valve core is preferably provided through which air can pass from a compressed air source, so that the tire can be filled without removing the gauge. A Bourdon tube is located within a sensor chamber and measures pressure within the reservoir. A shroud or other support surface is located adjacent a central opening of the Bourdon tube so that the Bourdon tube is supported sufficiently to avoid damage from forces including centrifugal forces encountered when the tire is spinning and the gauge is mounted on the valve stem of the tire.
    Type: Grant
    Filed: January 18, 2006
    Date of Patent: August 18, 2009
    Inventors: Robert B. Rutherford, Mike Levenson
  • Patent number: 7559245
    Abstract: A vacuum gauge has a scale having a safe zone indicia, a working zone indicia, an indicator to indicate a particular location on the scale, and a pressure sensing mechanism and housing having a pressure sensing port accessible for fluid connection to the refrigeration system to receive fluid for sensing. The indicia are distinctly coded for user differentiation. The scale may include a leak indicating zone indicia and a non-working zone indicia The safe zone indicia may represent 0 to 500 microns, the working zone indicia 500 to 2000 microns, the leak indicating zone indicia 2000 to 25,400 microns, and the non-working zone indicia 25,400 to 30,000 microns. Service tool combination includes body assembly, shaft assembly and gauge in direct sealed connection with a fitting for releasable sealed fluid connection. There are methods using the combination. Tool has gripper with cavity to receive valve core pin. Gripper has base to prevent pin from pulling gripper from tool.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: July 14, 2009
    Assignee: Brasscorp Limited
    Inventors: Steven M. Knowles, Paul Appler, Jack Brass
  • Patent number: 7559243
    Abstract: An attachment for an instrument having a rotary shaft whose position is indicative of a value being measured. A needle is attached to the shaft with an inherent magnetic field, or which carries a magnet. A sensor responsive to the direction of the field is supported above the needle, and reads out the angle of the needle relative to the sensor. These readings can be used for monitoring and control purposes.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: July 14, 2009
    Assignee: Irrometer Company, Inc.
    Inventor: ALfred J. Hawkins
  • Patent number: 7555959
    Abstract: Bourdon tube pressure gauge able to make a welding margin of a fastening end of a Bourdon tube and an insertion hole of a tube support broader, and able to ruggedly seal and fix the fastening end, that is, a Bourdon tube pressure gauge having a tube support provided with a fastening insertion hole in which a fastening end of a helical Bourdon tube is inserted, wherein the tube support has a weld metal injection hole reaching the fastening insertion hole in a direction perpendicular to a depth direction of the fastening insertion hole and at a position at the middle of the depth and a weld metal part formed by injecting the weld metal into the weld metal injection hole in a state where the fastening end is inserted in the fastening insertion hole.
    Type: Grant
    Filed: August 15, 2007
    Date of Patent: July 7, 2009
    Assignee: Yugenngaisya Fuji Burudon Seisakusho
    Inventor: Teruaki Miyasaka
  • Patent number: 7546773
    Abstract: A pressure gauge includes a core, a first dial, a first hand, a second dial, a second hand and a gear system. The core includes a body, a joint connected to the body and a Bourdon tube connected to the body. The first dial is connected to a side of the core for showing a large range of pressure. The first hand is located on the first dial. The second dial is connected to an opposite side of the core for showing a small range of pressure. The second hand is located on the second dial. The gear system connects the Bourdon tube to the first and second hands.
    Type: Grant
    Filed: May 3, 2007
    Date of Patent: June 16, 2009
    Inventor: Scott Wu
  • Patent number: 7509848
    Abstract: A sensor adjustment device for an indicating pressure gauge includes a groove disposed on a dial and a sliding member. The sensor moves and is located in the groove by means of the sliding member. The gauge contains a sensor that operates without contacting an indicator needle of the gauge, and electronic signals are outputted from the sensor to automatically send an alarm once the indicator needle passes through where the sensor is located.
    Type: Grant
    Filed: June 5, 2007
    Date of Patent: March 31, 2009
    Inventor: Li-Chen Chen
  • Patent number: 7469591
    Abstract: A two-in-one temperature and pressure gauge is constituted primarily by a shell, a housing, a score panel, a needle set, a temperature sensing mechanism, and a pressure sensing mechanism. The needle set includes two needles which are coaxially installed, with one needle being connected with the temperature sensing mechanism, and the other needle being connected with the pressure sensing mechanism. The invention can be both used as the temperature gauge and the pressure gauge at a same time, a space for installing gauge sets can be decreased, and manufacturing cost can be reduced.
    Type: Grant
    Filed: December 31, 2007
    Date of Patent: December 30, 2008
    Inventor: Chien-Huang Chuang
  • Patent number: 7430901
    Abstract: A pressure gauge assembly for a bicycle tire includes a gauge portion having an indicator, a shaft, and a lower portion. The shaft includes a recess and a channel portion which is in communication with the recess and the gauge portion. A button is mounted in the recess. The lower portion defines a compartment in communication with the channel portion. Two bushings, respectively, engage two ends of the compartment, and a drive member mounted with an O-ring is included in the compartment. Two holes, respectively, defined on two ends of the drive member are not in communication with each other. A protruding end is defined on an end and a insert end included in another end of the drive member. The drive member is moveable in the compartment.
    Type: Grant
    Filed: December 29, 2006
    Date of Patent: October 7, 2008
    Inventors: Scott Wu, Chien-Lung Cheng
  • Patent number: 7240559
    Abstract: The invention relates to a manometer with a housing, a connecting piece rigidly connected to the housing, a bourdon tube arranged in the housing, a viewing glass fixed on the housing, and a pointer, which can rotate on the inside of the viewing glass and which is engaged with a free end of the bourdon tube, wherein the housing has on its top side a connecting piece that is bent inwardly for connecting to the viewing glass. To simplify the assembly, several cutouts distributed over the periphery are arranged in the connecting piece of the housing for engagement of an assembly tool, wherein the housing is connected to the connecting piece with a positive fit.
    Type: Grant
    Filed: August 24, 2005
    Date of Patent: July 10, 2007
    Inventor: Steffen Förster
  • Patent number: 7237439
    Abstract: A gauge is provided for monitoring pressure of air or other gases within a tire or other gas containing chamber. A gauge includes a receiver attachable to a valve stem of the tire. A valve core is also provided on the gauge through which fill air can be directed. In this way, the gauge does not need to be removed during filling of the tire with air. A pathway extends from the valve core to the receiver within the gauge. A pressure sensor, such as a Bourdon tube, is coupled to this pathway and monitors pressure within the tire. A sensor protector is located within the path and adjacent the Bourdon tube or other pressure sensor to protect the Bourdon tube or other pressure sensor from over-pressure air or other gases that could damage the Bourdon tube or other pressure sensor.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: July 3, 2007
    Inventors: Robert B. Rutherford, Mike Levenson
  • Patent number: 7228743
    Abstract: An extremely low power transducer for use with a meter is able to be powered by miniature solar cells to measure and display a physical quantity such as pressure, force, level or distance. The transducer provides a variable capacitance to an electronic circuit that includes an integrated circuit for conversion to the displayed value.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: June 12, 2007
    Assignee: Weiss Instruments, Inc.
    Inventor: John W. Weiss
  • Patent number: 7181976
    Abstract: The invention relates to a spring-elastic measuring element (1) for thermometers, pressure switches or manometers consisting of an arc-shaped measuring tube (3), a base body (2) and a connecting element (10) for the measuring mechanism. The aim of the invention is to achieve the fully automated welding of the thermally influenced zone and to improve the latter. To achieve this, the connections between the measuring tube (3) and the base body (2) and the measuring tube and the connecting element (10) are obtained using connecting elements (11, 12) that can be welded. This allows the risk of contamination of the measuring system to be eliminated to a great extent and reduces the formation of corrosion and vibration cracks by the use of a small thermally influenced zone. A connecting element (11, 12) can also be produced as one-piece with the measuring tube (3) by expanding or creating a bead on the latter.
    Type: Grant
    Filed: March 12, 2004
    Date of Patent: February 27, 2007
    Assignee: Armaturenbau GmbH
    Inventor: Otto Radau
  • Patent number: 7165461
    Abstract: A pressure gauge comprising a stem having an inlet at which pressure is sensed. A Bourdon tube is coupled to the stem and is displaceable in response to pressure changes at the inlet. A movement comprising a movement plate conducts displacement of the Bourdon tube to a pointer shaft. A circuit board comprising an inductor is fixed relative to the stem. The movement plate comprises an integral flag connecting the movement to the Bourdon tube and an integral inductive target operatively positioned relative to the inductor.
    Type: Grant
    Filed: March 27, 2003
    Date of Patent: January 23, 2007
    Assignee: Ashcroft, Inc.
    Inventor: Walter James Ferguson
  • Patent number: 7140257
    Abstract: A pressure measurement device includes a housing having an inlet, a transducer coupled to the inlet to generate an electrical signal representative of pressure at the inlet, and a data communication device coupled to the transducer to transmit a wireless signal corresponding to the electrical signal.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: November 28, 2006
    Assignee: Ashcroft Inc.
    Inventors: John W. Henson, Daniel G. Horne, Donald D. McIntosh, Walter J. Ferguson, John H. Bailey, Philip E. Butler, Douglas H. Beyer
  • Patent number: 7124642
    Abstract: A dual gauge system determines pressures of two separately contained gases by use of two separate pointer—Bourdon tube sections within the dual gauge. The Bourdon tube of a first one of the sections is gaseously coupled to a first one of the contained gases to determine pressure of the first one of the contained gases and a Bourdon tube of a second one of the sections is gaseously coupled to a second one of the contained gases to determine pressure of the second one of the contained gases. Accuracy of pressure determination is enhanced by allowing for separate calibration of each of the two gauge sections.
    Type: Grant
    Filed: April 15, 2005
    Date of Patent: October 24, 2006
    Assignee: Right Weigh, Inc.
    Inventors: Sidney R. Campbell, Tyler R. M. Kope
  • Patent number: 7040175
    Abstract: An improved pressure reading structure for a pressure gage is disclosed, comprising a data plate, a rotable pointer and a protection casing. The data plate includes a central area and an extended area next to and connected to the central area, both of the areas being positioned on different planes to serve as an upper area and a lower area thereof respectively. In addition, the rotable pointer has a first end mounted above the central area of the data plate, a second end mounted above the extended area of the data plate, and a needle relative to the data plate to form a space. Accordingly, tire pressure can be read from different view angles, and also, use of the pressure gage becomes more convenient.
    Type: Grant
    Filed: December 29, 2004
    Date of Patent: May 9, 2006
    Inventor: Tien-Tsai Huang
  • Patent number: 6925886
    Abstract: A vacuum flow measurement device measures the quantity of air flowing into a high-volume evacuator (HVE) vacuum tip commonly found in dental treatment rooms. The device includes a tubular member constructed to mimic internal structural characteristics of a HVE tip. The tubular member includes a valve end coupleable with a HVE valve and an open end. A pressure gauge is connected to the tubular member via a port spaced from the open end of the tubular member. When the vacuum flow measurement device is coupled with the HVE valve, an air flow rate is determined as a function of pressure measured via the pressure gauge.
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: August 9, 2005
    Assignee: RAMVAC Dental Products, Inc.
    Inventor: James Isaac Meyer
  • Patent number: 6898979
    Abstract: A portable hand-held device for measuring the pressure in an automobile air conditioning system includes a socket adapted to connect to a service port, an internal passage in communication with the socket, and a pressure gauge disposed in the housing selectively in communication with the internal passage. A valve is interposed between the internal passage and the gauge. When the socket is engaged to a service port of an automobile air conditioning system, gas from the automobile air conditioning system enters the socket, passes through the internal passage, and is read by the pressure gauge. A button is provided having a ramped portion, and a pin contacts the ramped portion of the button at one end at the valve at the other end. When the button is depressed, the pin raises the valve into an open position to allow pressurized gas trapped on a gauge side of the valve to be released via the socket to reset the gauge.
    Type: Grant
    Filed: August 19, 2003
    Date of Patent: May 31, 2005
    Assignee: Interdynamics, Inc.
    Inventors: David M. Cowan, Jochen Schäpers, Saul Trachtenberg
  • Publication number: 20040255686
    Abstract: The pressure gauge spring is a responsive and easy to manufacture gauge for connection to a pressure source. The spring assembly comprises a coiled hollow tube having a first end and a second end with a body portion therebetween, the hollow tube adapted to produce a displacement of the second end in response to a change in said pressure source to which said first end is connected. The second end of the body portion is sealed. The body portion of the spring assembly has a first longitudinal portion and a second longitudinal portion extending from proximate to said first longitudinal portion to said second end and substantially uniformly compressed along the second longitudinal portion to reduce volume thereby. A transition area is disposed between said first end and said first longitudinal portion of said hollow tube, and is compressed so as to form a continuous longitudinally extending ridge along said transition area.
    Type: Application
    Filed: April 12, 2004
    Publication date: December 23, 2004
    Applicant: MIJA Industries
    Inventor: John J. McSheffrey
  • Publication number: 20040187590
    Abstract: A pressure gauge comprising a stem having an inlet at which pressure is sensed. A Bourdon tube is coupled to the stem and is displaceable in response to pressure changes at the inlet. A movement comprising a movement plate conducts displacement of the Bourdon tube to a pointer shaft. A circuit board comprising an inductor is fixed relative to the stem. The movement plate comprises an integral flag connecting the movement to the Bourdon tube and an integral inductive target operatively positioned relative to the inductor.
    Type: Application
    Filed: March 27, 2003
    Publication date: September 30, 2004
    Inventor: Walter James Ferguson
  • Publication number: 20040177698
    Abstract: A vacuum flow measurement device measures the quantity of air flowing into a high-volume evacuator (HVE) vacuum tip commonly found in dental treatment rooms. The device includes a tubular member constructed to mimic internal structural characteristics of a HVE tip. The tubular member includes a valve end coupleable with a HVE valve and an open end. A pressure gauge is connected to the tubular member via a port spaced from the open end of the tubular member. When the vacuum flow measurement device is coupled with the HVE valve, an air flow rate is determined as a function of pressure measured via the pressure gauge.
    Type: Application
    Filed: March 12, 2003
    Publication date: September 16, 2004
    Inventor: James Isaac Meyer
  • Patent number: 6763725
    Abstract: A pressure reading structure used in a pressure gauge is disclosed to include an index dial shaped like a circular cap and mounted in a hollow transparent cylindrical housing, and an angled pointer suspended over an angled top-view index dial portion and a side-view index dial portion of the index dial for enabling the user to view the readings of the pressure gauge from the top side as well as the peripheral side of the pressure gauge so as to enhance the convenience of using the gauge.
    Type: Grant
    Filed: May 14, 2003
    Date of Patent: July 20, 2004
    Inventor: Tien-Tsai Huang
  • Patent number: 6758097
    Abstract: The pressure gauge spring is a responsive and easy to manufacture gauge for connection to a pressure source. The spring assembly comprises a coiled hollow tube having a first end and a second end with a body portion therebetween, the hollow tube adapted to produce a displacement of the second end in response to a change in said pressure source to which said first end is connected. The second end of the body portion is sealed. The body portion of the spring assembly has a first longitudinal portion and a second longitudinal portion extending from proximate to said first longitudinal portion to said second end and substantially uniformly compressed along the second longitudinal portion to reduce volume thereby. A transition area is disposed between said first end and said first longitudinal portion of said hollow tube, and is compressed so as to form a continuous longitudinally extending ridge along said transition area.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: July 6, 2004
    Assignee: MIJA Industries
    Inventor: John J. McSheffrey
  • Publication number: 20040093952
    Abstract: A pressure transducer comprises a Bourdon tube, a magnetic component and a GMR sensor. The Bourdon tube comprises a base, a tube attached to the base and a mechanical linkage converting movement of the tube into rotational movement of a shaft. The magnetic component is mounted to the shaft. The magnetic component emits a magnetic field. The GMR sensor is mounted relative to the magnetic component and is arranged to detect rotational movement of the magnetic component. The GMR sensor is adapted to output an electrical signal representative of rotation of said magnetic component.
    Type: Application
    Filed: November 17, 2003
    Publication date: May 20, 2004
    Inventor: Spencer Eisenbarth
  • Patent number: 6684712
    Abstract: The measuring instrument for a pressure gauge comprises an indicator unit with two plates that bear rotatably an indicator shaft carrying a pinion and that furthermore bear a gear segment. The measuring instrument furthermore comprises a metal Bourdon tube bent into an arc shape, which is soldered on one end to a spring carrier and on the other to a spring end-piece. The spring end-piece is connected to the gear segment such that the displacement of the spring end-piece because of the measurement pressure is transferred to the gear segment. The spring end-piece constitutes a part that is rigidly attached to one of the two plates prior to the Bourdon tube being soldered to the spring end-piece and that is separated from this plate once the Bourdon tube has been soldered to the spring end-piece. During the course of the manufacture of this measuring instrument, the spring end-piece is produced as a part that is securely joined to the two plates.
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: February 3, 2004
    Assignee: Wika Alexander Wiegand GmbH & Co.
    Inventors: Kurt Klein, Detlef Wahl, Heiko Schliessmann, Helmut Berninger, Bernd Friebe, Burkard Meisenzahl
  • Patent number: 6679122
    Abstract: A dampening apparatus for a pressure gauge in which a housing secured to the amplifier of the pressure gauge encircles the pointer shaft in a close but loose fit relation so as to define a controlled clearance packed with a high viscosity dampening agent such that it serves to decelerate and cushion any sudden shock or pulsation force that would otherwise be transmitted from the pointer shaft to a pointer registering values of pressure of fluid pressure being monitored.
    Type: Grant
    Filed: March 29, 2001
    Date of Patent: January 20, 2004
    Assignee: Dresser, Inc.
    Inventors: Jeffrey T. Blake, William G. Muldowney
  • Publication number: 20030230148
    Abstract: An apparatus for testing domestic water piping systems and a method for testing such systems from a washing machine box. The apparatus has a body and a set of flexible detachable hoses. The body has a central elongated member. At the top most portion of the central elongated member is an IPS connection. This IPS connection connects to a 100 PSI gauge. At opposing sides of the uppermost portion of the central elongated member are second IPS connections. Connected to these PS connections is a compression 90° elbow. At the other end of the compression 90° elbow is a third IPS connection. On the left section of the lowermost portion of the central elongated member is a female garden hose fitting. On the right side of the lowermost portion of II the central elongated member is a pressure bleed valve (shrader valve) controlled by a control knob at its base. Two flexible detachable hoses are provided each having a female hose connection at one end and a nut at the remaining end.
    Type: Application
    Filed: June 12, 2003
    Publication date: December 18, 2003
    Inventor: Wesley Saxton
  • Patent number: 6648505
    Abstract: This invention relates to an improved structure for the vehicular temperature, pressure and vacuum meters with characteristics on that the hand rod is an integrally formed design joined to the dial plate and Bourdon tube without using any bolts or screws, so it is convenient for fast assembly. The Bourdon tube and the hand rod are designed to be suitable for application of any size of the dial plate, so the Bourdon tube, the hand rod and the dial plate can be manufactured and assembled in mass production and tested beforehand to assure the required sensitivity and accuracy as long as the retaining recess on the dial plate can be fitted and locked firmly in place with the retaining protruding point on the meter housing.
    Type: Grant
    Filed: October 2, 2002
    Date of Patent: November 18, 2003
    Assignee: Equus Inc.
    Inventor: Duke Chen