Patents by Inventor Rob McCullough

Rob McCullough 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: 8210270
    Abstract: A tool assembly is provided. The tool assembly comprises a drilling deflector and a completion deflector, the completion deflector coupled to the drilling deflector.
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: July 3, 2012
    Assignee: Halliburton Energy Services, Inc.
    Inventors: William Shaun Renshaw, Rob McCullough
  • Patent number: 8082999
    Abstract: A tool assembly is provided. The tool assembly comprises a drilling deflector and a completion deflector, the completion deflector coupled to the drilling deflector.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: December 27, 2011
    Assignee: Halliburton Energy Services, Inc.
    Inventors: William Shaun Renshaw, Rob McCullough
  • Publication number: 20110290505
    Abstract: A tool assembly is provided. The tool assembly comprises a drilling deflector and a completion deflector, the completion deflector coupled to the drilling deflector.
    Type: Application
    Filed: August 11, 2011
    Publication date: December 1, 2011
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: William Shaun Renshaw, Rob McCullough
  • Publication number: 20100212913
    Abstract: A tool assembly is provided. The tool assembly comprises a drilling deflector and a completion deflector, the completion deflector coupled to the drilling deflector.
    Type: Application
    Filed: February 20, 2009
    Publication date: August 26, 2010
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: William Shaun Renshaw, Rob McCullough
  • Patent number: 6320459
    Abstract: A filter system includes a low pass filter, a first summer circuit, a second low pass filter and a second summer circuit. The first low pass filter includes an input, an output, a storage means, a switching means and a control means. An input signal is placed on the input. An output signal is generated on the output. The storage means provides storage of a signal sample over time. The switching means, when closed, electrically couples the input to the first end of the storage means. The switching means, when open electrically isolates the input from the first end of the storage means. The control means controls the switching means. The control means generates a switching control signal. The switching control signal has a sampling frequency. A maximum cutoff frequency of the low pass filter is dependent on a value of a capacitance provided by the storage means, the sampling frequency, and a pulse width of the switching control signal.
    Type: Grant
    Filed: December 18, 2000
    Date of Patent: November 20, 2001
    Inventor: Rob McCullough
  • Publication number: 20010005162
    Abstract: A filter system includes a low pass filter, a first summer circuit, a second low pass filter and a second summer circuit. The first low pass filter includes an input, an output, a storage means, a switching means and a control means. An input signal is placed on the input. An output signal is generated on the output. The storage means provides storage of a signal sample over time. The switching means, when closed, electrically couples the input to the first end of the storage means. The switching means, when open electrically isolates the input from the first end of the storage means. The control means controls the switching means. The control means generates a switching control signal. The switching control signal has a sampling frequency. A maximum cutoff frequency of the low pass filter is dependent on a value of a capacitance provided by the storage means, the sampling frequency, and a pulse width of the switching control signal.
    Type: Application
    Filed: December 18, 2000
    Publication date: June 28, 2001
    Inventor: Rob McCullough
  • Patent number: 6166567
    Abstract: An analog sampling processor includes an analog sampling filter, a sample amplitude comparison circuit, a switch and switch control circuitry. The analog sampling filter filters a filter input signal to produce a filtered signal. The sample amplitude comparison circuit compares amplitude of the input signal and the filtered signal to produce a comparator signal. The switch samples a processor input signal to produce a sampled signal. The switch control circuitry receives the comparator signal and input from a sampling control signal. The switch control circuitry combines the comparator signal from the sampling control signal to generate a control signal that controls the sampling characteristics of the switch.
    Type: Grant
    Filed: January 19, 2000
    Date of Patent: December 26, 2000
    Inventor: Rob McCullough
  • Patent number: 6072360
    Abstract: A low pass filter includes an input, an output, a storage means, a switching means and a control means. The input receives an input signal. An output signal is generated on the output. The storage means is a sample storage element, for example, a capacitance. A first end of the storage means is connected to the output. The switching means is connected between the first end of the storage means and the input. The switching means, when closed, electrically connects the input to the first end of the storage means. When open, the switching means electrically isolates the input from the first end of the storage means. The control means controls the switching means. The control means generates a switching control signal. The switching control signal has a sampling frequency. The capacitance provided by the capacitance means and a pulse width of the switching control signal are selected so that a maximum cutoff frequency of the low pass filter is less than the sampling frequency divided by two.
    Type: Grant
    Filed: November 24, 1997
    Date of Patent: June 6, 2000
    Inventor: Rob McCullough