Patents by Inventor David J. Ball

David J. Ball 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: 8771011
    Abstract: The present invention provides a universal broadband interface connection system, which increases the reliability of a drop system. The present invention provides a cable connection system including a nut assembly including a nut and a donut; a slug assembly including a first sleeve, a second sleeve, and a ferrule; and a port assembly including a port and an insulative ring.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: July 8, 2014
    Inventor: David J Ball
  • Patent number: 5580002
    Abstract: Hot gas is introduced into a fluidised bed of granular material, for example gypsum, contained in a vessel 10 having a grinding device or mill 11 in its lower region, which may comprise grinding rollers 15 cooperating with a table 17 on the base of the vessel. The gas may be supplied through a tube 20 passing down through the vessel, while raw material is fed into the bed, preferably by a feed screw 34. The ground product is discharged from the bed by an overflow 28 which determines the level of the bed.
    Type: Grant
    Filed: August 24, 1994
    Date of Patent: December 3, 1996
    Assignee: BPB Industries Public Limited Company
    Inventors: Arthur G. T. Ward, David J. Ball, Philip Curtis, Edward Varney
  • Patent number: 5011668
    Abstract: In a method and apparatus for calcining calcium sulphate dihydrate or like heat sensitive material, in which a bed of the material is heated in a vessel (41) by the direct introduction of a hot gas through a tube (21) extending downwardly into the bed, the proportion of insoluble anhydrite (II) in the product is reduced by lowering the temperature of the hot gas before it contacts the material of the bed. This is done by indirect heat exchange through the wall of the tube 21 with a relatively cool substance, for example, powdered gypsum or recycled exhaust gases, in an outer tube (26). The cooling material in the outer tube contacts the material in the bed before the latter is contacted by the hot gas.
    Type: Grant
    Filed: March 2, 1989
    Date of Patent: April 30, 1991
    Assignee: United States Gypsum Company
    Inventors: David J. Ball, Edward Varney
  • Patent number: 4915623
    Abstract: The invention concerns an improved method of calcining gypsum in which non-reactive hot gas is passed into contact with the gypsum from a source through a plurality of tubes extending downwardly into the gypsum. The invention also contemplates an improved apparatus which comprises a calcining kettle and a plurality of tubes connected to a common source of non-reactive hot gas and extending downwardly into the kettle and having openings in their lower regions to release the hot gas into the contents of the kettle. The invention provides a method and apparatus which produces gypsum plaster of improved quality and with less insoluble anhydrite.
    Type: Grant
    Filed: February 28, 1989
    Date of Patent: April 10, 1990
    Assignee: United States Gypsum Company
    Inventors: David J. Ball, Edward Varney, Philip Curtis, Martin Dzidrums
  • Patent number: 4508407
    Abstract: A self-locking connector in which balls carried by a connector shell are spring biased toward a locking ring which is rotatable with the coupling nut of the connector. The ring is formed with a circular array of detent recesses with which the balls engage when the coupling nut is rotated. The balls and recesses are arranged so that only one ball engages a recess at any instant so that there are a large number of locking positions for the coupling nut.
    Type: Grant
    Filed: December 2, 1982
    Date of Patent: April 2, 1985
    Assignee: International Telephone & Telegraph Corporation
    Inventor: David J. Ball
  • Patent number: 4460227
    Abstract: A multi-wire cable grommet constructed of a pliable material has a plurality of apertures extending therethrough and wire-sealing wall portions, one for each cable wire. Centrally located and extending angularly inwardly from the aperture wall is a generally cone-shaped wall portion which terminates in an opening smaller than the wire diameter. The opening in the cone-shaped portion lies on the aperture axis and is encompassed by a bead with wall thickness being relatively thin so that any wire movements transversely of the aperture axis will be taken up by bending of the conical wall rather than by any tendency of the conical member opening bead to be stretched away from sealing relationship with the wire.
    Type: Grant
    Filed: July 17, 1981
    Date of Patent: July 17, 1984
    Assignee: Automation Industries, Inc.
    Inventor: David J. Ball
  • Patent number: 4458220
    Abstract: A plug and receptacle electrical connector has incorporated within one of its parts an insulative enclosure maintaining the pin or sockets contacts, as the case may be, in an electrically insulated relation, which enclosure also has cavities formed about each of the pin contacts for receiving inductors and/or one or more specially formed capacitors therein.Each inductor is an elongated hollow cylinder formed of a magnetic material (e.g., sintered ferrite), one such inductor being received within a member cavity and the pin (or socket) contacts on being assembled in the connector part extending through the respective inductor openings. A capacitor consists of an insulative cylinder with an axial opening therethrough and has select portions coated with first and second electrically conductive film electrodes.
    Type: Grant
    Filed: July 17, 1981
    Date of Patent: July 3, 1984
    Assignee: Automation Industries, Inc.
    Inventors: Paul Carter, David J. Ball
  • Patent number: 4277125
    Abstract: An electrical connector having a receptacle including a receptacle shell and a plug including a plug housing, a coupling nut threaded on the plug housing and engaged with a coupling ring, the coupling nut having threaded engagement with the plug housing and the coupling ring having locking flanges engageable with cooperable locking lands on the receptacle shell, the plug and receptacle being adapted to be fully electrically mated and locked by rotation of the coupling ring through about 90 degrees. An arcuate detent member subtending an angle of about 180 degrees is keyed to the plug housing for relative axial movement of the plug housing, and is received within an annular groove in the coupling ring for resilient forcible selective engagement of opposite radially outwardly enlarged ends of the arcuate detent member with two sets of radially outwardly formed recesses in the coupling ring.
    Type: Grant
    Filed: July 12, 1979
    Date of Patent: July 7, 1981
    Assignee: Automation Industries, Inc.
    Inventor: David J. Ball
  • Patent number: 4074927
    Abstract: An electrical connector having cooperable mating and unmating plug and receptacle means carrying a dielectric insert member within a cylindrical shell and having an insert member compressible retainer ring for immovably axially holding an insert member against a positioning shoulder within the shell.
    Type: Grant
    Filed: July 26, 1976
    Date of Patent: February 21, 1978
    Assignee: Automation Industries, Inc.
    Inventor: David J. Ball
  • Patent number: RE31995
    Abstract: An electrical connector having a receptacle including a receptacle shell and a plug including a plug housing, a coupling nut threaded on the plug housing and engaged with a coupling ring, the coupling nut having threaded engagement with the plug housing and the coupling ring having locking flanges engageable with cooperable locking lands on the receptacle shell, the plug and receptacle being adapted to be fully electrically mated and locked by rotation of the coupling ring through about 90 degrees. An arcuate detent member subtending an angle of about 180 degrees is keyed to the plug housing for relative axial movement of the plug housing, and is received within an annular groove in the coupling ring for resilient forcible selective engagement of opposite radially outwardly enlarged ends of the arcuate detent member with two sets of radially outwardly formed recesses in the coupling ring.
    Type: Grant
    Filed: January 19, 1984
    Date of Patent: October 1, 1985
    Assignee: Automation Industries, Inc.
    Inventor: David J. Ball