Patent ID: 6959895

Claim:
A vehicle for moving through a fluid, the vehicle comprising: a forward portion and a rearward portion opposite the forward portion, a first pair of wings arranged at the forward portion of the vehicle; a second pair of wings arranged at the rearward portion of the vehicle; and a body connected to the forward pair of wings and connected to the rearward pair of wings, the body being arranged to drive the forward pair of wings alternately toward each other and apart and the body being arranged to drive the second pair of wings alternately toward each other and apart, wherein the body includes at least two beams pivotally connected to each other at a central portion of the two beams, wherein pivotal motion of the beams in a direction away from each other drives the forward pair of wings away from each other and drives the rearward pair of wings away from each other, and wherein pivotal motion of the beams toward each other drives the forward pair of wings toward each other and the rearward pair of wings toward each other.