Double-acting single-web swimming apparatus

Details Double-acting single-web swimming apparatus Double-acting single-web swimming apparatus

1977-10-05

1980-03-18

Basinger, Sherman D.

115 28R, B63H 1600

Patent

active

041933710

ABSTRACT:
A swimmer's propulsion apparatus of the type comprising an anti-drift member and a propelling fish-tail member connected to the anti-drift member so as to perform a swinging motion with respect to said anti-drift member, wherein the improvement consists in that the propelling member is arranged to substantially freely pivot within a predetermined neutral sector about a pivot bar oscillated by the swimmer and that the rear portion of the propelling member beyond said pivot bar has a surface greater than its front portion.

REFERENCES:
patent: 2854787 (1958-10-01), Oberg
patent: 3377977 (1968-04-01), Malm
patent: 3380426 (1968-04-01), Davies
patent: 3426722 (1969-02-01), Dragich

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