Patents Assigned to Hovermarine Transport Limited
  • Sidewall gas-cushion vehicles
    Patent number: 4166515
    Abstract: A sidewall gas-cushion vehicle is provided with hydrofoils carried in recesses defined by the sidewalls and capable of being extended into an operable position or of being retracted into an inoperative position. The foils may be used to generate lift forces and/or to counter unwanted movements of the vehicle, such as heave, roll and pitching motions. The lift forces can be made positive or negative.
    Type: Grant
    Filed: March 28, 1977
    Date of Patent: September 4, 1979
    Assignee: Hovermarine Transport Limited
    Inventor: Edward G. Tattersall
  • Gas-cushion vehicles
    Patent number: 4135595
    Abstract: A sidewall gas-cushion vehicle is provided with a panel movable in the bottom of the vehicle body in response to changes in cushion pressure whereby the cushion volume is increased as cushion pressure tends to increase, and vice-versa. Panel movement is controllable so as to vary the degree of response to changes in cushion pressure, and upward movement of the panel is retarded by dash-pot devices.
    Type: Grant
    Filed: November 26, 1976
    Date of Patent: January 23, 1979
    Assignee: Hovermarine Transport Limited
    Inventor: Edward G. Tattersall
  • Gas-cushion vehicles
    Patent number: 4103755
    Abstract: A gas-cushion vehicle is provided with one or more fans for supplying cushion air to the cushion space beneath the vehicle, and an additional, "passive" fan, the outflow of which varies according to changes in cushion pressure, whereby additional air is supplied to the cushion space as cushion pressure tends to decrease, and a backflow of cushion air takes place through the additional fan as cushion pressure tends to increase.
    Type: Grant
    Filed: March 28, 1977
    Date of Patent: August 1, 1978
    Assignee: Hovermarine Transport Limited
    Inventor: Edward Gunston Tattersall
  • Gas-cushion vehicles
    Patent number: 3977491
    Abstract: An air-cushion vehicle is provided with an inflatable flexible skirt of bag-like form. The bottom of the skirt defines a convex face in close proximity to the surface over which the vehicle travels so as to form an atmosphere-seeking plenum gap. The flexible skirt is impermeable except for the convex face which is perforated so as to allow skirt inflation air to bleed through the face and suppress any vibration induced by the Bernoulli effect.
    Type: Grant
    Filed: October 6, 1975
    Date of Patent: August 31, 1976
    Assignee: Hovermarine Transport Limited
    Inventor: Ronald Christopher Fishlock