Patents Assigned to C.A.V. Limited
  • Patent number: 3932798
    Abstract: An electrical inverter comprises positive and negative supply lines, first and second thyristors the anodes of which are connected to the positive line and the cathodes of which are connected respectively to the anodes of third and fourth thyristors. An oscillatory commutating circuit including a capacitor and an inductor is provided and which is connected between the anodes of the third and fourth thyristors and also a firing circuit is provided to provide gate signals to the first, fourth, third and second thyristors in that order. In addition, means is provided to over-damp the oscillatory circuit thereby to limit the commutating voltage.
    Type: Grant
    Filed: December 5, 1974
    Date of Patent: January 13, 1976
    Assignee: C.A.V. Limited
    Inventors: Brian John Chalmers, John Philip Gibson
  • Patent number: 3930484
    Abstract: A fuel injection pumping apparatus includes an injection pump to which fuel is supplied by means of an axially movable shuttle which is contained within a cylinder. Fuel is supplied to one end of the cylinder through a metering valve from a first source of fuel under pressure. The fuel contained in said one end of the cylinder is displaced to the injection pump by applying fuel under pressure to the other end of the cylinder containing the shuttle from a further source of fuel under pressure. The pressure of the further source of fuel is higher than that of the first mentioned source.
    Type: Grant
    Filed: July 22, 1974
    Date of Patent: January 6, 1976
    Assignee: C.A.V. Limited
    Inventor: Robert Thomas John Skinner