Patents by Inventor David W. Allan

David W. Allan 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).

  • Patent number: 8407875
    Abstract: A tool for fastening fencing material to a post with a staple. The tool includes a base plate; first and second handles; first and second crimping arms, and a cam operatively engaged with the first handle. A slide is operatively engaged with the cam. The first and second handles and the first and second crimping arms are pivotally interconnected and attached to the base plate so that when the first and second handles are pivoted towards one another from an open position, the cam advances the slide, which advances the staple so that the crimping arms may crimp the staple to the fence post. A method for attaching the staple to a fence post is also described and claimed. An inventive staple is also disclosed.
    Type: Grant
    Filed: April 15, 2009
    Date of Patent: April 2, 2013
    Inventors: Bryce N. Gray, Dennis L. Wheeler, Vance T. Countryman, Paul A. McBride, Russell R. Myers, Cody S. Curtis, David W. Allan, Ryan A. Lingmann
  • Publication number: 20090314379
    Abstract: A tool for fastening fencing material to a post with a staple. The tool includes a base plate; first and second handles; first and second crimping arms, and a cam operatively engaged with the first handle. A slide is operatively engaged with the cam. The first and second handles and the first and second crimping arms are pivotally interconnected and attached to the base plate so that when the first and second handles are pivoted towards one another from an open position, the cam advances the slide, which advances the staple so that the crimping arms may crimp the staple to the fence post. A method for attaching the staple to a fence post is also described and claimed. An inventive staple is also disclosed.
    Type: Application
    Filed: April 15, 2009
    Publication date: December 24, 2009
    Inventors: Bryce N. Gray, Dennis L. Wheeler, Vance T. Countryman, Paul A. McBride, Russell R. Myers, Cody S. Curtis, David W. Allan, Ryan A. Lingmann
  • Patent number: 7472032
    Abstract: A sensor array made up of 2n piezoelectric oscillators (preferably paired quartz oscillators) is provided in which n equals the number of axes of interest and each one of the pairs of oscillators has a principle axis directed oppositely from the other of its pair. A controller which preferably includes a microprocessor, makes use of the dynamic relationships of the sensors in the array to adaptively assess the magnitude of weighting factors needed to correct the output signal from each oscillator for environmental and systematic effects to provide optimum frequency and phase output for computing position, velocity, and acceleration. Preferably, a seventh reference oscillator is provided in the center of the array which is canted relative to each of the three orthogonal axes by 45°. This adaptive sensor array is capable of determining position within one meter along any of the x, y, and z axes without the need for any external (e.g., GPS) signal.
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: December 30, 2008
    Assignee: Allan Space-Time Solutions, LLC
    Inventors: David W Allan, John A Kusters, Gus R German
  • Publication number: 20080319707
    Abstract: A sensor array made up of 2 n piezoelectric oscillators (preferably paired quartz oscillators) is provided in which n equals the number of axes of interest and each one of the pairs of oscillators has a principle axis directed oppositely from the other of its pair. A controller which preferably includes a microprocessor, makes use of the dynamic relationships of the sensors in the array to adaptively assess the magnitude of weighting factors needed to correct the output signal from each oscillator for environmental and systematic effects to provide optimum frequency and phase output for computing position, velocity, and acceleration. Preferably, a seventh reference oscillator is provided in the center of the array which is canted relative to each of the three orthogonal axes by 45°. This adaptive sensor array is capable of determining position within one meter along any of the x, y, and z axes without the need for any external (e.g., GPS) signal.
    Type: Application
    Filed: June 25, 2007
    Publication date: December 25, 2008
    Inventors: David W. Allan, John A Kusters, Gus R. German
  • Patent number: 5274545
    Abstract: A device and method provide for an accurate output from a unit, such as an oscillator and/or clock providing an output indicative of frequency and/or time. The device includes a processing section having a microprocessor that develops a model characterizing the performance of the device, including establishing predicted accuracy variations, and the model is then used to correct the unit output. An external reference is used to provide a reference input for updating the model, including updating of predicted variations of the unit, by comparison of the reference input with the unit output. The ability of the model to accurately predict the performance of the unit improves as additional updates are carried out, and this allows the interval between the updates to be lengthened and/or the overall accuracy of the device to be improved. The accuracy of the output is thus adaptively optimized in the presence of systematic and random variations.
    Type: Grant
    Filed: April 3, 1992
    Date of Patent: December 28, 1993
    Assignee: The United States of America as represented by the Secretary of Commerce
    Inventors: David W. Allan, Judah Levine, Dicky D. Davis, Marc A. Weiss
  • Patent number: 4331933
    Abstract: Perceived atomic resonance frequency error resulting from microwave power level changes in atomic clocks is eliminated by controlling the device's microwave power source output in response to deviations from a fixed frequency relationship between the main atomic peak and a sidelobe peak of the atomic beam frequency spectrum. This is accomplished by a microwave power control servo system that includes a time sharing interrogation circuit for detecting and monitoring the frequencies of the main atomic peak and the sidelobe peak and a comparator that compares the frequencies of the main atomic and sidelobe peaks and generates a feedback control signal in response to frequency differences between the two that deviate from a fixed difference frequency. The feedback signal is used to control the microwave power source output in a manner that constrains the main atomic peak and the sidelobe peak at a fixed offset frequency.
    Type: Grant
    Filed: June 19, 1980
    Date of Patent: May 25, 1982
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: David W. Allan, R. Michael Garvey