Patents by Inventor Michael John Kellaway

Michael John Kellaway 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).

  • Battery powered electric vehicle and electrical supply system
    Patent number: 5642270
    Abstract: A charging system for a battery powered electric vehicle operates bidirectionally for charging the battery or for supplying power back to the utility grid at any selected power factor so that load leveling may be effected. A communications link between the utility and the charging system carries control signals and a control system associated with the charging system is responsive to the signals for controlling the charging rate and direction.
    Type: Grant
    Filed: January 28, 1994
    Date of Patent: June 24, 1997
    Assignee: Wavedriver Limited
    Inventors: Ross Martin Green, Michael John Kellaway
  • Fifth wheels for truck tractors
    Patent number: 4029335
    Abstract: A truck tractor has the fifth wheel mounted on a sub-frame which is pivotally connected between the tractor chassis and the rear axle of the tractor in order to improve the ride and handling of the tractor both when the truck is laden and unladen. Suspension elements are connected between the rear axle and the chassis frame. In one embodiment of the device the suspension elements comprise rubber blocks, and in another embodiment of the device, the suspension elements comprise leaf springs.
    Type: Grant
    Filed: March 31, 1976
    Date of Patent: June 14, 1977
    Assignee: British Leyland UK Limited
    Inventors: John Billington Cady, Michael John Kellaway