Combination oar and bilge pump

Details Combination oar and bilge pump Combination oar and bilge pump

1993-04-05

1994-06-21

Swinehart, Edwin L.

Marine propulsion

Oar or paddle

114221R, B63H 1604

Patent

active

053224620

ABSTRACT:
Disclosed is a combination oar and bilge pump which serves as an oar when the apparatus is in a locked first position and when in an un-locked second position becomes a bilge pump by plunging a second tube member having a plunger on its inner end, inward and outward of a first tube member which acts as a gripping surface.

REFERENCES:
patent: 1066662 (1913-07-01), Schmidt, Jr.
patent: 3044410 (1962-07-01), Edmundson
patent: 3165067 (1965-01-01), Greenwald
patent: 3518024 (1970-06-01), Wilson
patent: 3677216 (1972-07-01), Gentemann
patent: 3800734 (1974-04-01), Whang
patent: 3970031 (1976-07-01), Vrana
patent: 3970032 (1976-07-01), Phillips
patent: 4264275 (1981-04-01), Roderick
patent: 4664637 (1987-05-01), Loerch
patent: 5041037 (1991-08-01), Jaw
patent: 5074815 (1991-12-01), Gibson
patent: 5163778 (1992-11-01), Botero

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