| 摘要 |
<p>1,130,033. Air cushion vehicles. MATTEL Inc. 11 Oct., 1965 [4 Feb., 1965], No. 21954/67. Divided out of 1,130,031. Heading B7K. An air cushion vehicle comprises a body of the cross-section shown in Fig. 6 wherein a fan 18o delivers air flows 43o; 43p between spaced walls of which the upper walls 38o; 38p are respectively formed with cavities or chambers 48o; 48p near their periphery. The lower walls form part of chambers 60o; 60p which act as resonators and have apertures which open opposite the chambers 48o; 48p, the lateral walls 50o; 50p of the chamber being spaced from the peripheral wall of the vehicle to form ducts leading to nozzles 320 from which cushioncontaining curtains of air are discharged. In normal static lift conditions the air flow from the fan remains attached to the lower and side walls of chambers 60o and 60p to form cushioncontaining curtains and to obtain propulsion a selected sound signal is generated to drive a selected chamber 60o; 60p into resonance causing the air flow to lock on to the peripheral parts of walls 38o; 38p to which it adheres due to reduced pressure in chambers 48o; 48p thus causing the side of the vehicle in the region of deflected flow to drop so that a force vector is created to propel the vehicle.</p> |
