Patents by Inventor John N. Wells

John N. Wells 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: 10363619
    Abstract: A reciprocating saw blade for improving vibration and cordless runtime includes an elongated body having a front end portion and a rear end portion. An elongated cutting edge extends from the front end portion to the rear end portion and defines a longitudinal axis. An opposite non-cutting back edge extending from the front end portion to the rear end portion. The body has a thickness of approximately 0.89 mm to approximately 1.15 mm. A tang coupled to the rear end portion is configured to be coupled to a tool holder of a powered reciprocating saw. The cutting edge comprises a plurality of teeth and gullets. The teeth have a kerf width of approximately 1.29 mm to approximately 1.56 mm and are arranged in a pattern of alternating tooth pitch of a smaller first tooth pitch and a larger second tooth pitch.
    Type: Grant
    Filed: May 25, 2016
    Date of Patent: July 30, 2019
    Assignee: BLACK & DECKER INC.
    Inventors: Malek George, John P. Wells, David Brutscher, James R. Niblett, David N. Johnson
  • Patent number: 10303799
    Abstract: Embodiments of the present invention provide methods, computer program products, and systems for automatically generating a display to present different terms. Embodiments of the present invention can be used to identify a first and a second user using applications in a software as a service (SaaS) environment and store, for the first and the second user, a first term associated with the first user and a second term associated with the second user in the SaaS environment. Responsive to identifying the first term associated with the first user and the second term associated with the second user have functionally equivalent definitions, embodiments of the present invention can replace the second term associated with the second user with the first term associated with the first user and generate a display for the first term associated with the first user that replaced the second term associated with the second user.
    Type: Grant
    Filed: February 11, 2016
    Date of Patent: May 28, 2019
    Assignee: International Business Machines Corporation
    Inventors: Rhonda L. Childress, Donna M. Hickey, Randy S. Johnson, John F. Kelley, Tedrick N. Northway, Bradley K. Wells
  • Patent number: 5079522
    Abstract: A variable frequency signal generator includes a phase locked loop having a variable frequency oscillator which has a control port to which a frequency determining signal is applied, the output of the oscillator being fed via a frequency divider to a phase sensitive detector where it is compared with a reference frequency signal, the result of said comparison being arranged to generate a comparison signal which is fed to a loop filter which is coupled to said control port; and the signal generator having a frequency control signal applied thereto and comprising a first path being arranged to adjust the division ratio of the frequency divider, and a second path including a combiner for combining said frequency control signal and said comparison signal to produce said frequency determining signal; and a calibrator for adjusting the relative characteristics of said first and second paths to compensate for effects arising from tuning sensitivity dependence on frequency of said variable frequency generator.
    Type: Grant
    Filed: October 12, 1990
    Date of Patent: January 7, 1992
    Assignee: Marconi Instruments Limited
    Inventors: David P. Owen, John N. Wells
  • Patent number: 4960244
    Abstract: An atomizing nozzle for use in a fluidized coating bed includes an elongated hollow tube defining a chamber therein, the tube including an atomizing end in fluid communication with the chamber and a supply end; an air supply port at the supply end in fluid communication with the chamber; a coating liquid supply port at the supply end, the coating liquid supply port being separated from the air supply port; and a flow control tube extending within the hollow tube between the liquid supply port and the atomizing end, for supplying the coating liquid to be atomized to the atomizing end, the flow control tube having an reduced diameter inner bore providing a controlled flow constriction to the liquid travelling from the liquid supply port to the atomizing end so as to supply the coating liquid from the coating liquid supply port to the atomizing end with a controlled flow constriction, such that there is no need to provide a metering pump or flow meter for each atomizing nozzle of the fluidized coating bed and co
    Type: Grant
    Filed: May 8, 1989
    Date of Patent: October 2, 1990
    Assignee: Schering Corporation
    Inventors: Gustav A. Maag, John N. Wells
  • Patent number: 4914405
    Abstract: A low-noise frequency synthesizer comprises a low-noise oscillator, such as a crystal oscillator, a multiplier, a divider and a phase-locked loop and is adapted to provide an output signal which is a combination of the multiplied and divided frequency. Thus, a large number of frequencies are available as an output in small increments determined by the division ratio of the divider.
    Type: Grant
    Filed: September 1, 1988
    Date of Patent: April 3, 1990
    Assignee: Marconi Instruments Limited
    Inventor: John N. Wells
  • Patent number: 4851784
    Abstract: A phase comparator accepts two streams of digital pulses, one being a reference signal and the other a test signal, and generates an output signal indicative of the phase difference. The phase comparator can be implemented as a four-state device or higher, and thus exhibits a wide phase capture range, i.e. multiples of 360.degree., and can provide a stable, predictable and linear output signal when the two input signals are in lock. It is therefore very suitable for use in a phase locked loop in which temporary wide variations in phase can occur.
    Type: Grant
    Filed: March 18, 1988
    Date of Patent: July 25, 1989
    Assignee: Marconi Instruments Limited
    Inventors: John N. Wells, Neil E. Thomas
  • Patent number: 4609881
    Abstract: A frequency synthesizer produces a variable frequency output using a controllable oscillator and a variable frequency divider which form part of a phase locked loop. The integer division ratio of the divider can be altered during a division cycle to simulate a fractional divisor value. The phase noise or jitter which is caused by the step change in divisor value is removed by altering the divisor value in accordance with the terms of a plurality of sequences, each of which sums to zero and which represents successive rows in a Pascal's triangle. A cascaded sequence of accumulators is used to determine the starting instants of each sequence, and the length of each sequence is dependent on the number of delay lines used. Although only four accumulators are illustrated, more can be added to give any desired degree of phase noise cancellation.
    Type: Grant
    Filed: May 3, 1984
    Date of Patent: September 2, 1986
    Assignee: Marconi Instruments Limited
    Inventor: John N. Wells