Patents by Inventor Roger Barsted

Roger Barsted 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).

  • Brake equipment for underground mining machines
    Patent number: 4406354
    Abstract: Brake equipment for an underground mining machine, which in use traverses to and fro adjacent to a stationary rail extending along a longwall face and which includes a hydraulic haulage drive motor for hauling the machine along the longwall face, is activated to engage the stationary rail if other than a normal haulage condition of the drive motor is sensed, a control for the drive motor being moved into a neutral, machine non-traversing mode when the brake is applied.
    Type: Grant
    Filed: July 21, 1981
    Date of Patent: September 27, 1983
    Assignee: Coal Industry (Patents) Ltd.
    Inventor: Roger Barsted
  • Brake equipment
    Patent number: 4234060
    Abstract: Brake equipment for a vehicle or mining machine which in use traverses along a path adjacent to a stationary rail comprises a rail engaging component including a wedge assembly resilient means for urging the rail engaging component into a `brake applied` mode contacting the rail and ram means for urging the rail engaging component into a `brake released` mode out of contact with the rail. The brake equipment includes further ram means for urging the wedge assembly out of a rail engaging position when the brake is released.
    Type: Grant
    Filed: June 29, 1978
    Date of Patent: November 18, 1980
    Assignee: Coal Industry (Patents) Limited
    Inventor: Roger Barsted
  • Brake equipment for mining machines
    Patent number: 4196798
    Abstract: Brake equipment for a mining machine which in use traverses to and fro adjacent to a stationary rail extending along a longwall face and which includes a haulage drive motor for hauling the mining machine along the longwall face, the brake equipment being activated to fixedly engage the stationary rail if other than a normal haulage condition of the drive motor is sensed.
    Type: Grant
    Filed: June 29, 1978
    Date of Patent: April 8, 1980
    Assignee: Coal Industry (Patents) Limited
    Inventor: Roger Barsted