Patents by Inventor Eric Dring

Eric Dring 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).

  • Variable displacement fluid pump with transducer interface
    Patent number: 4710104
    Abstract: Apparatus for providing a variable supply of water under pressure to an hydraulic ring main pressure fluid circuit in, for example, a coal mine, comprises a reciprocating pump in said ring main and an hydraulic reciprocating motor for driving said pump mechanically coupled to said pump, the motor being operated by a variable displacement pump connected in a closed circuit with said motor.
    Type: Grant
    Filed: November 17, 1986
    Date of Patent: December 1, 1987
    Assignee: Dale (Mansfield) Limited
    Inventor: Eric Dring
  • Equipment for laying a layer of elongate material
    Patent number: 4230371
    Abstract: Equipment for laying a layer of elongate material adjacent to a newly exposed rock or mineral surface formed by a mining machine cutter as the machine traverses along the working face, a loading member for cut rock or mineral being positioned adjacent to the rear of the cutter, comprises a support bracket secured to the rear of the members, arm means pivotally mounted on the support bracket and supporting a store of elongate material, and means for urging the arm towards the newly exposed rock or mineral surface such that in use elongate material is dispensed from the store and laid adjacent to the newly exposed surface.
    Type: Grant
    Filed: April 6, 1979
    Date of Patent: October 28, 1980
    Assignee: Coal Industry Limited
    Inventors: Roy L. Bell, Dennis A. Gillard, Peter Watt, Brian Cartledge, Barry Millhouse, Michael E. Cheese, Eric Dring
  • Equipment for laying elongate material
    Patent number: 4196935
    Abstract: Equipment for laying a layer of wire mesh adjacent to a newly exposed mine roof comprises storage means (10) for a roll of mesh (11) and resilient guide means (12) for guiding the mesh (72) as it unwinds towards the newly exposed mine roof (5).
    Type: Grant
    Filed: October 20, 1978
    Date of Patent: April 8, 1980
    Assignee: Coal Industry (Patents) Limited
    Inventor: Eric Dring
  • Mining machine cowl assembly
    Patent number: 4068894
    Abstract: A cowl assembly for use in association with the shearing drum of a mining machine has an arcuate cowl member and a cowl arm connected to the cowl member, the cowl arm having an annular mounting member at the end thereof remote from said cowl member to enable mounting of the cowl assembly in association with the shearing drum for angular movement about the axis of the drum, a plurality of peg members being arranged circumferentially on said mounting member and projecting therefrom for engagement with a sprocket wheel forming part of a power drive mechanism adapted to be supported on the mining machine. The mounting member is preferably formed in arcuate halves interconnected by bolts disposed substantially tangentially to the mounting member and at diametrically opposite locations.
    Type: Grant
    Filed: October 6, 1976
    Date of Patent: January 17, 1978
    Assignee: Dale (Mansfield) Limited
    Inventor: Eric Dring