Patents Assigned to Dwyer Instruments, Inc.
  • Patent number: 10001151
    Abstract: An apparatus for measuring airflow through a diffuser of an HVAC system includes a hood for being positioned adjacent the diffuser so that airflow discharged from the diffuser is directed into the hood. The hood is configured to divide and direct the airflow through a plurality of discharge channels. Sensor probes measure the airflow through each discharge channel.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: June 19, 2018
    Assignee: Dwyer Instruments, Inc.
    Inventors: Robert Austin Moss, Alejandro Ignacio Baez Guada
  • Patent number: 9583967
    Abstract: A pressure transducer for a hammer union installation includes a lower body capable of withstanding the stresses of the hammer union installation. The lower body includes a cylindrical wall, a diaphragm, and a pressure port for exposing the diaphragm to pressure. The pressure transducer also includes one or more transducer elements mounted on the diaphragm that are operable to provide a signal related to pressure. A cap is received by the cylindrical wall and is slidable along the wall. The cap includes comprising an antenna for transmitting the signal. A spring is arranged in the lower body for dampening forces applied to the cap.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: February 28, 2017
    Assignee: Dwyer Instruments, Inc.
    Inventor: Robert Austin Moss
  • Patent number: 9524630
    Abstract: An apparatus for monitoring air flow in a vent pipe of a radon mitigation system includes a base connectable to the vent pipe. The base houses a circuit that is actuatable to indicate the condition of the radon mitigation system. An air flow switch actuates the circuit, the air flow switch includes a vane that is supported by the base and extends into the interior of the vent pipe through an opening in a wall of the vent pipe. The vane includes a wing having portions that are deflectable to permit installation of the wing through an opening in the vent pipe. The deflectable portions return under their own resilience to their non-deflected conditions once they pass through the opening in the vent pipe.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: December 20, 2016
    Assignee: Dwyer Instruments, Inc.
    Inventors: Alejandro Ignacio Baez Guada, Matthew Goldschmidt
  • Patent number: 9395386
    Abstract: System, apparatus and method for providing corrective sensor outputs, particularly when a sensor is subject to gravitational or acceleration effects. A sensor and accelerometer may be operatively coupled to a processor, wherein the processor receives inputs from both. The processor receives the sensor signals and determines the gravitational or acceleration effects on the sensor from the accelerometer signals. Based on these, the processor determines a correction factor that is applied to the sensor signals to provide improved and more accurate sensor outputs.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: July 19, 2016
    Assignee: Dwyer Instruments, Inc.
    Inventors: Rodney Corder, Daniel A. Heuer
  • Patent number: 9194760
    Abstract: System, apparatus and method for capacitive sensing, where a sensor includes an upper and lower housing, each respectively equipped with upper and lower pressure ports. The lower housing is electrically coupled to an active shield. An insulating material is provided on or near a conductive diaphragm for insulating the conductive diaphragm from the lower housing. The insulating material may be an insulator or a dielectric material, where a sensing electrode is positioned such that the sensing electrode extends laterally across at least a portion of the insulating material, and is separated from the insulating material by a predetermined distance to form an air gap.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: November 24, 2015
    Assignee: Dwyer Instruments, Inc.
    Inventors: Rodney Corder, Armand E. Gagne, II, Justin A. Brown, Stephen J. Charnley, Ryan Finley, Kyle J. Devlin, Anna B. Wint, Jenan Almishari
  • Publication number: 20150285755
    Abstract: A humidity sensor arrangement for providing temperature compensated measurements. A first sensor is configured internal to a housing for the sensor arrangement, and a second sensor is configured external to the housing. The first sensor measures a first relative humidity at a first temperature, and the second sensor measures second temperature external. A processor determines saturation pressures for the first and second sensors and compensates the first sensor by adjusting the relative humidity for the first sensor to be a product of the relative humidity for the first sensor and a ratio of the saturation pressure of the first and second sensors. Further compensation may be produced by applying a time-based filter algorithm to the outputs of the first and second sensors. Temperature sensors can be compensated to determine room temperature and compensated temp can be used for precise humidity compensation.
    Type: Application
    Filed: April 8, 2014
    Publication date: October 8, 2015
    Applicant: Dwyer Instruments, Inc.
    Inventors: Robert Austin Moss, Neal Warren Syverson, Daniel A. Heuer, Larry R. Roth
  • Patent number: 8563884
    Abstract: A switching device including a plurality of electrical switches, and an activation lever adapted to substantially simultaneously change the switches from a first state to a second state in response to a single physical input.
    Type: Grant
    Filed: December 27, 2010
    Date of Patent: October 22, 2013
    Assignee: Dwyer Instruments, Inc.
    Inventors: Brian L. Palmer, Christina A. Bentley
  • Patent number: 8528410
    Abstract: A gage having a motion detection mechanism magnetically attached to a pressure sensing diaphragm. The motion detection mechanism is magnetically coupled to a pointer rotation mechanism configured to indicate the position of the diaphragm and the corresponding pressure sensed by the diaphragm.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: September 10, 2013
    Assignee: Dwyer Instruments, Inc.
    Inventor: Michael A. Popp
  • Patent number: 8528412
    Abstract: A gage having a motion detection mechanism magnetically attached to a pressure sensing diaphragm. The motion detection mechanism is magnetically coupled to a pointer rotation mechanism configured to indicate the position of the diaphragm and the corresponding pressure sensed by the diaphragm.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: September 10, 2013
    Assignee: Dwyer Instruments, Inc.
    Inventor: Michael A. Popp
  • Patent number: 8511167
    Abstract: A gage having a motion detection mechanism magnetically attached to a pressure sensing diaphragm. The motion detection mechanism is magnetically coupled to a pointer rotation mechanism configured to indicate the position of the diaphragm and the corresponding pressure sensed by the diaphragm.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: August 20, 2013
    Assignee: Dwyer Instruments, Inc.
    Inventor: Michael A. Popp
  • Patent number: 8495916
    Abstract: A gage having a motion detection mechanism magnetically attached to a pressure sensing diaphragm. The motion detection mechanism is magnetically coupled to a pointer rotation mechanism configured to indicate the position of the diaphragm and the corresponding pressure sensed by the diaphragm.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: July 30, 2013
    Assignee: Dwyer Instruments, Inc.
    Inventor: Michael A. Popp
  • Patent number: 8424705
    Abstract: A cover retention mechanism for releasably locking a cover to a base such as a gage housing. The cover retention mechanism includes a base lock having a receiver and a receptacle, and a cover lock having a latch attached to an end of a flexible arm. The latch is selectively movable between a retracted position wherein the latch engages the receptacle to prevent rotational movement of the cover with respect to the housing from the closed position toward an open position, and an extended position wherein the latch is removed from the receptacle and the cover is rotatable with respect to the housing from the closed position toward the open position.
    Type: Grant
    Filed: September 1, 2009
    Date of Patent: April 23, 2013
    Assignee: Dwyer Instruments, Inc.
    Inventors: Brian Lee Palmer, Michael A. Popp
  • Patent number: 8307712
    Abstract: A gage having a motion detection mechanism magnetically attached to a pressure sensing diaphragm. The motion detection mechanism is magnetically coupled to a pointer rotation mechanism configured to indicate the position of the diaphragm and the corresponding pressure sensed by the diaphragm.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: November 13, 2012
    Assignee: Dwyer Instruments, Inc.
    Inventor: Michael A. Popp
  • Patent number: 8129046
    Abstract: A battery pack system may include a battery pack and a battery pack holder. The battery pack holder receives the battery pack and couples a battery pack terminal to a load associated with the battery pack holder. The battery pack includes an operation handle external to a battery pack housing. The operation handle is coupled to an operation member via an operation shaft that passes through the housing. A safety circuit of the battery pack couples power supplied by a battery to battery pack terminals based upon position of the operation handle. An operation member of the battery pack extends a locking member into an opening of the battery pack holder when the operation handle is in the engaged position, and retracts the locking member from the opening when the operation handle is in the disengaged position.
    Type: Grant
    Filed: September 2, 2008
    Date of Patent: March 6, 2012
    Assignee: Dwyer Instruments, Inc.
    Inventor: Rodney Corder
  • Patent number: 7600427
    Abstract: An enclosure for a gage including a housing and cover. The cover includes one or more mounting lugs and the housing includes one or more mounting mechanisms. Each mounting mechanism includes an inclined ramp to facilitate removal of the cover from the housing by rotational movement of the cover with respect to the housing.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: October 13, 2009
    Assignee: Dwyer Instruments, Inc.
    Inventors: Brian Lee Palmer, Michael A. Popp
  • Patent number: 7281490
    Abstract: A gauge for indicating a measured variable such as pressure. The gauge includes a motion detection device including a drive magnet that is adapted to be moveable in response to changes in the variable. The pointer rotation device includes a pivot member, a power magnet coupled to the pivot member, and one or more director members located adjacent the power magnet. Each director member includes a generally helical flange. A pointer is coupled to the pointer rotation device. The director members and the power magnet form a magnetic field adapted to magnetically couple the pointer rotation device to the drive magnet. The pointer rotation device is adapted to rotate about a rotational axis. Movement of the drive magnet in response to changes in the variable rotates the pointer rotation device and the pointer about the rotational axis such that the pointer indicates the measured variable.
    Type: Grant
    Filed: July 27, 2005
    Date of Patent: October 16, 2007
    Assignee: Dwyer Instruments, Inc.
    Inventor: Steven O. Buchanan
  • Patent number: 7249517
    Abstract: The invention disclosed herein is a pressure transducer utilizing a Hall effect sensor to detect the displacement of the transducer's diaphragm. The pressure transducer includes a power supply to draw current from a 4 mA to 20 mA current loop and deliver current to the Hall effect sensor at an average rate of 4 mA or less.
    Type: Grant
    Filed: February 1, 2005
    Date of Patent: July 31, 2007
    Assignee: Dwyer Instruments, Inc.
    Inventors: Daniel A. Heuer, Shannon Edwards
  • Patent number: 7073385
    Abstract: A pressure sensor having a radially tensioned diaphragm for measuring fluid pressure. The pressure sensor includes a first generally concave metal body member and a second generally concave metal body member, and a radially tensioned flexible metal diaphragm disposed therebetween that is tensioned by heating the sensor. The first and second body members are formed from a material having a coefficient of thermal expansion in the range of approximately 0.0000056 inch/inch/° F. to 0.0000064 inch/inch/° F. The diaphragm is formed from a precipitation hardening metal material having a coefficient of thermal expansion of approximately 0.0000060 inch/inch/° F. The first body member and the second body member are formed from a ferromagnetic metal material such that the first and second body members shield the diaphragm from magnetic fields which may otherwise cause movement of the diaphragm.
    Type: Grant
    Filed: February 13, 2004
    Date of Patent: July 11, 2006
    Assignee: Dwyer Instruments, Inc.
    Inventor: Terrence J. Troyer
  • Patent number: D560530
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: January 29, 2008
    Assignee: Dwyer Instruments, Inc.
    Inventors: Mark E. Fisher, Michael A. Popp, Richard A. Papai
  • Patent number: D629708
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: December 28, 2010
    Assignee: Dwyer Instruments, Inc.
    Inventor: Michael A. Popp