Patents by Inventor Charles R. Allen

Charles R. Allen 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: 6761078
    Abstract: The present invention comprises an improved ultrasonic transducer mount including a removable union sleeve engaged with a transducer holder sleeve on the mount. The union sleeve has an outer diameter that engages an extractor tool for removal of the transducer and transducer holder from the mount. A retaining ring holds the union sleeve in place on the outside of the transducer holder sleeve.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: July 13, 2004
    Assignee: Daniel Industries, Inc.
    Inventor: Charles R. Allen
  • Publication number: 20030041679
    Abstract: The present invention comprises an improved ultrasonic transducer mount including a removable union sleeve engaged with a transducer holder sleeve on the mount. The union sleeve has an outer diameter that engages an extractor tool for removal of the transducer and transducer holder from the mount. A retaining ring holds the union sleeve in place on the outside of the transducer holder sleeve.
    Type: Application
    Filed: August 30, 2001
    Publication date: March 6, 2003
    Inventor: Charles R. Allen
  • Patent number: 5752730
    Abstract: A transport tool which is attachable to a hoist mechanism for a suspended access work platform permits the mechanism to be easily lifted and moved about on a job site. The transport tool attaches to the hoist mechanism and affords a place for a service crew member to easily lift the mechanism and carry it. The mechanism may thus be easily moved with less likelihood of dropping or damage, and also less risk of injury or strain in lifting or carrying it.
    Type: Grant
    Filed: November 13, 1996
    Date of Patent: May 19, 1998
    Assignee: Houston Industries Incorporated
    Inventor: Charles R. Allen
  • Patent number: 5497332
    Abstract: This invention involves transducing and monitoring the power being delivered by an electric generator to a power bus by using a monitor which includes an embedded microprocessor in the memory of which are stored reference digital numbers that correspond to the generator's nominal power, and to the components of the nominal power including output power. The generator's voltage and current signals are sensed and then shaped for use by the microprocessor wherein they are digitized into a first set of digital numbers. Preferably, the first set of digital numbers is converted into pulse-width modulated (PWM) square-wave signals, which are demodulated into DC current signals that are indicative of the power and the components of power being delivered by the electric generator to its power bus. The microprocessor digitizes the square wave signals into a second set of digital numbers, and calculates from the first and from the second sets of digital numbers real time digital numbers.
    Type: Grant
    Filed: October 1, 1993
    Date of Patent: March 5, 1996
    Assignee: Automatic Terminal Information Systems, Inc.
    Inventors: Charles R. Allen, Robert L. Spaw
  • Patent number: 5231793
    Abstract: A tree ring and artificial ground covering for protecting the bark on the trunk portion of a tree from the girdling action of lawn trimming equipment, and for inhibiting the growth of undesired vegetation comprising a tubular plastic ring having a groove formed therein, a plastic connector for connecting the two ends of the ring, a water permeable woven plastic material, slit to fit around a tree trunk and fastened to the plastic ring by inserting the edge of the material into the ring groove and holding the material in place with a tubular plastic spline dimensioned to fit within the groove.
    Type: Grant
    Filed: July 14, 1992
    Date of Patent: August 3, 1993
    Inventor: Charles R. Allen
  • Patent number: 4851156
    Abstract: Radioactive combustible waste can be processed with hot concentrated sulfuric acid and the resulting residue material immobilized in glass with retention of volatile radio-ruthenium, if present. In addition, the process features minimal material handling. The process combines a sulfuric acid digestion treatment of waste with a drying, desulfation, and glassification of the resulting acid residue into a non-dispersible solid of reduced volume. An optional ceramic product can be made without desulfation of the residue.
    Type: Grant
    Filed: September 10, 1980
    Date of Patent: July 25, 1989
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Charles R. Allen, Wilbur O. Greenhalgh, Richard G. Cowan
  • Patent number: 4715234
    Abstract: A self-cleaning and self-lubricating fluid flowmeter comprising a tubular body forming an internal flow passage with a bearing support hub immovably positioned therein and forming a bearing receptacle. A rotor shaft extends into the bearing receptacle and supports a turbine rotor, the rotor shaft being supported by bearings located within the bearing receptacle. An increased pressure region is defined between the upstream and downstream ends of the bearing support hub, a slightly decreased pressure region is developed within the flow passage immediately downstream of the bearing support hub and is communicated into a cleaning and lubricating flow path extending from the slightly decreased pressure region upstream through the bearings, reversing and extending downstream to its terminal position at a greatly decreased pressure region further downstream of the bearing support hub.
    Type: Grant
    Filed: July 18, 1986
    Date of Patent: December 29, 1987
    Assignee: Daniel Industries, Inc.
    Inventors: Charles R. Allen, Jack D. Harshman
  • Patent number: 4700507
    Abstract: A shield made of high impact polyurethane plastic, molded in two half sections which can be fitted over the base portion of a tree trunk where it widens into the soil. The shield includes anchors for a bottom flange and provides for enlarging a top, flange defined hole. The facing edges of the half sections accommodate molded locking connectors in enlarged or swollen portions.
    Type: Grant
    Filed: March 31, 1986
    Date of Patent: October 20, 1987
    Inventor: Charles R. Allen