Patent ID: 11912390
Assignee: nan
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A paddle for propelling a water craft through water, the paddle comprising;
an elongated shaft having a handle at one end and a paddle portion at the other end;
the paddle portion comprising a substantially flat member having opposite first and second sides, a central portion and a peripheral edge,
a plurality of convolutions formed on the peripheral edge, each convolution comprising a finger positioned between a pair of notches, the notches extending from the peripheral edge towards the central portion, and
a plurality of concave surfaces formed on the peripheral edge adjacent the convolutions, the concave surfaces aligning with the fingers, the plurality of concave surfaces being separated from each other by a plurality of non-concave surfaces, respectively, the non-concave surfaces being aligned with the notches.