Patents by Inventor David Donovan
David Donovan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9683697Abstract: Methods and systems for determining lubrication flow dispensed to lubrication points. Lubricant delivery is determined based upon the difference between volume measurements detected as the lubricant is delivered to the lubrication points, and volume measurements detected as the lubricant is vented after delivery. A flow sensor in the lubricant supply line measures lubricant delivered and lubricant vented and a controller determines the amount dispensed based upon the difference between the delivered and vented measurements.Type: GrantFiled: March 31, 2015Date of Patent: June 20, 2017Assignee: Lincoln Industrial CorporationInventors: Paul G. Conley, Nathan David Donovan
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Publication number: 20170122784Abstract: A flow measuring device for measuring flow of a fluid. A housing has a passage which extends between an inlet and an outlet. A shaft is disposed within the housing and is rotatable about a central axis. A flow detector is mounted on the shaft and disposed at least partially within the passage. The flow detector includes a rotatable, generally cylindrical body that rotates about a central axis as the fluid flows. A magnet is disposed within the housing such that the central axis extends through it, and is configured to rotate simultaneously with the body about the central axis. A magnetic encoder is disposed within the housing and configured to sense rotation of the magnet as the flow detector angularly displaces about the central axis so as to detect angular displacement of the flow detector.Type: ApplicationFiled: January 12, 2017Publication date: May 4, 2017Inventors: Viktor Alekseyev, Nathan David Donovan, Eric Krassinger, Canlong He, Brad Allen Edler, Paul G. Conley
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Patent number: 9581474Abstract: A flow measuring device for measuring flow of a fluid. A housing has a passage which extends between an inlet and an outlet. A shaft is disposed within the housing and is rotatable about a central axis. A flow detector is mounted on the shaft and disposed at least partially within the passage. The flow detector includes a rotatable, generally cylindrical body that rotates about a central axis as the fluid flows. A magnet is mounted on the rotatable body or on the shaft, and is configured to rotate simultaneously with the body about the central axis. A sensor is disposed within the housing and configured to sense rotation of the magnet as the flow detector angularly displaces about the central axis so as to detect angular displacement of the flow detector.Type: GrantFiled: December 30, 2014Date of Patent: February 28, 2017Assignee: Lincoln Industrial CorporationInventors: Viktor Alekseyev, Nathan David Donovan, Eric Krassinger, Canlong He, Brad Allen Edler, Paul G. Conley
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Publication number: 20160290848Abstract: Methods and systems for determining lubrication flow dispensed to lubrication points. Lubricant delivery is determined based upon the difference between volume measurements detected as the lubricant is delivered to the lubrication points, and volume measurements detected as the lubricant is vented after delivery. A flow sensor in the lubricant supply line measures lubricant delivered and lubricant vented and a controller determines the amount dispensed based upon the difference between the delivered and vented measurements.Type: ApplicationFiled: March 31, 2015Publication date: October 6, 2016Applicant: LINCOLN INDUSTRIAL CORPORATIONInventors: Paul G. Conley, Nathan David Donovan
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Patent number: 9388940Abstract: Apparatus and method for supplying lubricant to a plurality of lubrication sites. Embodiments include a pump with venting and non-venting piston return, a pump with stirrer and direct feed mechanism, a pump with CAN system and self-diagnostics, a pump with heated housing and reservoir and a pump with stepper motor and overdrive control. Profiles drive the stepper motor at various speeds.Type: GrantFiled: September 28, 2012Date of Patent: July 12, 2016Assignee: Lincoln Industrial CorporationInventors: Paul G. Conley, Nathan David Donovan, Brad Allen Edler
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Patent number: 9222618Abstract: Apparatus and method for supplying lubricant to a plurality of lubrication points via divider valves. A pump driven by a stepper motor to supplies lubricant at a varying rate which provides lubricant substantially uninterrupted at the lubrication point(s), and/or provides lubricant at a continuous non-constant flow rate which provides lubricant without interruption at the lubrication point(s), and/or provides lubricant at a constant flow rate which provides lubricant without interruption at the lubrication point(s).Type: GrantFiled: September 28, 2012Date of Patent: December 29, 2015Assignee: Lincoln Industrial CorporationInventors: Nathan David Donovan, Paul G. Conley
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Publication number: 20150177034Abstract: A flow measuring device for measuring flow of a fluid. A housing has a passage which extends between an inlet and an outlet. A shaft is disposed within the housing and is rotatable about a central axis. A flow detector is mounted on the shaft and disposed at least partially within the passage. The flow detector includes a rotatable, generally cylindrical body that rotates about a central axis as the fluid flows. A magnet is mounted on the rotatable body or on the shaft, and is configured to rotate simultaneously with the body about the central axis. A sensor is disposed within the housing and configured to sense rotation of the magnet as the flow detector angularly displaces about the central axis so as to detect angular displacement of the flow detector.Type: ApplicationFiled: December 30, 2014Publication date: June 25, 2015Inventors: Viktor Alekseyev, Nathan David Donovan, Eric Krassinger, Canlong He, Brad Allen Edler, Paul G. Conley
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Patent number: 9020018Abstract: A calibration system may be provided for calibrating wireless communications circuitry in an electronic device during manufacturing. The calibration system may include data acquisition equipment and calibration computing equipment for receiving and processing test and calibration signals from wireless communications circuitry to be calibrated. During testing and calibration operations, a device may be provided with initial pre-distortion calibration values. The initial pre-distortion calibration values may be generated at least in part based on calibration operations performed for other wireless electronic devices. The device may generate a test signal using the initial pre-distortion calibration values. The calibration system may determine whether the test signal is within an acceptable range of a known reference signal.Type: GrantFiled: June 14, 2012Date of Patent: April 28, 2015Assignee: Apple Inc.Inventors: Gary Lang Do, David A. Donovan, Gurusubrahmaniyan Radhakrishnan
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Patent number: 8913973Abstract: Electronic devices with wireless communications capabilities are provided. The electronic device may include storage and processing circuitry, power amplifier circuitry, power supply circuitry, etc. The storage and processing circuitry may direct the power amplifier circuitry to operate using a desired gain mode, in a particular radio channel, and at a given output power level. The power supply circuitry may bias the power amplifier circuitry with a power supply voltage. The performance of the power amplifier circuitry may be characterized by an adjacent channel leakage ratio (ACLR) margin. The power consumption of the power amplifier circuitry may be characterized by a current savings ratio. A cost function may be calculated by taking the product of the ACLR margin and current savings ratio. A minimum point for each cost function curve may be determined. It is desirable to bias the power amplifier circuitry with a supply voltage corresponding to the minimum point.Type: GrantFiled: November 9, 2012Date of Patent: December 16, 2014Assignee: Apple Inc.Inventors: David A. Donovan, Justin Gregg, Vishuanath Venkataraman
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Patent number: 8805306Abstract: A calibration system for calibrating wireless circuitry in an electronic device is provided. The test system may include test equipment, a computer, and a device under test (DUT). The test equipment may measure the output power of the DUT. The DUT may include power amplifier circuitry that is provided with a power supply voltage supplied by power supply circuitry. A list mode sequence of commands may be provided to the DUT and the test equipment to calibrate the power amplifier circuitry. The list of commands may be processed by the DUT to produce radio-frequency signals. The list of commands may be simultaneously processed by the test equipment to perform measurements on the radio-frequency signals. The computer may retrieve measurement data from the test equipment after testing is complete. The computer may subsequently determine calibrated control settings for the DUT that reduce power consumption while ensuring satisfactory adjacent channel leakage performance.Type: GrantFiled: September 7, 2012Date of Patent: August 12, 2014Assignee: Apple Inc.Inventors: Wassim El-Hassan, David A. Donovan
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Publication number: 20140133109Abstract: A field replaceable auxiliary switch and control circuit assembly for an electrical contactor that comprises a frame member capable of being inserted into, and removable from, an opening and an interior of an electrical contactor housing. A circuit board is mounted to the frame member and has a control circuit formed thereon. The assembly may further comprise a first electrical connector disposed within the contactor housing and a second electrical connector attached to the circuit board having one or more electrical contacts capable of being positioned in mating relationship with the first electrical contactor, which is in electrical communication with an electromagnet and/or electromagnetic coil.Type: ApplicationFiled: October 18, 2013Publication date: May 15, 2014Applicant: DYNAPAR CORPORATIONInventors: John Marshall Thomasson, Cathleen Mary Clausen, Nicholas Graham Hartman, David Donovan
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Patent number: 8706044Abstract: A method for testing wireless devices under test (DUTs) in a wireless test station is provided. Each test station may include a test unit, a test chamber with an antenna, and a radio-frequency (RF) cable that connects the test unit to the test chamber. Reference DUTs may be used to calibrate each test station to compute a corrected linear equation based on a nominal path loss value. Over-the-air (OTA) path loss of each test station may not be directly measured. Once calibrated, the test chambers may be used during product testing to test factory DUTs to determine whether a particular factory DUT satisfies pass/fail criteria. During product testing, measured output power levels may be compared with expected output power levels computed using the corrected linear equation. The amount of error between the measured and expected output power levels will determine whether a production DUT satisfies the pass/fail criteria.Type: GrantFiled: August 31, 2010Date of Patent: April 22, 2014Assignee: Apple Inc.Inventors: Thomas W. Chang, Adil Syed, David A. Donovan
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Publication number: 20140101832Abstract: Disclosed is a raised toilet seat assembly with improved coupling features. The raised toilet seat assembly includes an adapter plate configured to couple to a toilet, a shoe configured to couple to the adapter plate, and a raised toilet seat configured to couple to the shoe thereby forming a fully assembled raised toilet seat assembly. In some embodiments, the adapter plate comprises a plurality of passages configured to fit about fasteners when positioned over holes at a rear portion of the toilet, and a slot configured to receive a first portion of the shoe when coupled thereto.Type: ApplicationFiled: October 12, 2012Publication date: April 17, 2014Applicant: APEX MEDICAL CORPORATIONInventors: Duane Richard Wagner, Shane Henry Walz, David Donovan Fravel
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Publication number: 20140073275Abstract: A calibration system for calibrating wireless circuitry in an electronic device is provided. The test system may include test equipment, a computer, and a device under test (DUT). The test equipment may measure the output power of the DUT. The DUT may include power amplifier circuitry that is provided with a power supply voltage supplied by power supply circuitry. A list mode sequence of commands may be provided to the DUT and the test equipment to calibrate the power amplifier circuitry. The list of commands may be processed by the DUT to produce radio-frequency signals. The list of commands may be simultaneously processed by the test equipment to perform measurements on the radio-frequency signals. The computer may retrieve measurement data from the test equipment after testing is complete. The computer may subsequently determine calibrated control settings for the DUT that reduce power consumption while ensuring satisfactory adjacent channel leakage performance.Type: ApplicationFiled: September 7, 2012Publication date: March 13, 2014Inventors: Wassim El-Hassan, David A. Donovan
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Patent number: 8660812Abstract: Calibration equipment for calibrating multiple test stations in a test system is provided. Each test station may include a test unit, a test chamber with an over-the-air antenna, and a radio-frequency (RF) cable that connects the test unit to the test chamber. Reference devices under test (DUTs) may be used to calibrate uplink and downlink path loss (e.g., OTA path loss, RF cable path loss, and variations of the test unit) associated with each test station. The reference DUTs may calibrate each test station at desired frequencies to generate a path loss table. Once calibrated, the test chambers may be used during production testing to test factory DUTs. During production testing, the transmit/receive power efficiency of each factory DUT may be calculated based on values in the path loss table to determine whether a particular production DUT is a passing or failing DUT according to pass/fail criteria.Type: GrantFiled: February 25, 2011Date of Patent: February 25, 2014Assignee: Apple Inc.Inventors: Justin Gregg, Tomoki Takeya, David A. Donovan
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Publication number: 20130336376Abstract: A calibration system may be provided for calibrating wireless communications circuitry in an electronic device during manufacturing. The calibration system may include data acquisition equipment and calibration computing equipment for receiving and processing test and calibration signals from wireless communications circuitry to be calibrated. During testing and calibration operations, a device may be provided with initial pre-distortion calibration values. The initial pre-distortion calibration values may be generated at least in part based on calibration operations performed for other wireless electronic devices. The device may generate a test signal using the initial pre-distortion calibration values. The calibration system may determine whether the test signal is within an acceptable range of a known reference signal.Type: ApplicationFiled: June 14, 2012Publication date: December 19, 2013Inventors: Gary Lang Do, David A. Donovan, Gurusubrahmaniyan Radhakrishnan
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Patent number: D712019Type: GrantFiled: September 6, 2012Date of Patent: August 26, 2014Assignee: Carex Health BrandsInventors: Duane Richard Wagner, Shane Henry Walz, David Donovan Fravel
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Patent number: D713359Type: GrantFiled: October 29, 2012Date of Patent: September 16, 2014Assignee: Dynapar CorporationInventors: John Marshall Thomasson, Cathleen Mary Clausen, Nicholas Graham Hartman, David Donovan
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Patent number: D720439Type: GrantFiled: September 7, 2012Date of Patent: December 30, 2014Assignee: Apex Medical CorporationInventors: Duane Richard Wagner, Shane Henry Walz, David Donovan Fravel
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Patent number: D753067Type: GrantFiled: June 23, 2014Date of Patent: April 5, 2016Assignee: Dynapar CorporationInventors: John Marshall Thomasson, Cathleen Mary Clausen, Nicholas Graham Hartman, David Donovan