Patents Assigned to Wavedriver Limited
  • 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
  • Mounting assembly for power semiconductors
    Patent number: 5586004
    Abstract: A mounting assembly for power semiconductors comprises a plurality of modules (20) arranged in a symmetrical arrangement around a central axis. Each module has one or more heat sink substrate surfaces (201,203) for the mounting of semiconductor components (205) and an internal passage (202) for passing a fluid cooling medium therethrough in order to cool the semiconductor components. The assembly may comprise a prismatic body (24) providing the substrate surfaces (243).
    Type: Grant
    Filed: June 22, 1995
    Date of Patent: December 17, 1996
    Assignee: Wavedriver Limited
    Inventors: Ross M. Green, Michael J. Kellaway, David J. Shemmans, David J. McShane
  • Vehicle cooling system
    Patent number: 5531285
    Abstract: An electric-hybrid type vehicle, has a main electric drive and motor and an auxiliary internal combustion engine drive. The vehicle includes an integrated liquid cooling/heating system for the electric drive power supply and the motor and the auxiliary internal combustion engine, whereby heat removed from the electric drive power supply can be supplied to the auxiliary internal combustion engine to pre-heat it. A space heater may also be provided and supplied with heat from the drive power supply and from the traction motor.
    Type: Grant
    Filed: January 28, 1994
    Date of Patent: July 2, 1996
    Assignee: Wavedriver Limited
    Inventor: Ross M. Green