Marine propulsion – Oar or paddle – Articulated sectional oar or paddle
Patent
1990-10-29
1992-03-31
Sotelo, Jesus D.
Marine propulsion
Oar or paddle
Articulated sectional oar or paddle
B63H 1612
Patent
active
051003520
ABSTRACT:
A front-facing rowing arrangement for a boat includes a pair of oars of which includes a handle 1 and a blade 3 mounted for pivotal movement about spaced parallel axes on a supporting member 5 which is itself hingedly mounted for movement about a horizontal axis extending parallel to the direction of travel of the boat. The handle 1 and blade 3 of each oar are connected by a lever/linkage system which is such that the angular velocity of the blade relative to the angular velocity of the handle increases steadily throughout a typical power stroke.
REFERENCES:
patent: 717980 (1903-01-01), Flint
patent: 982202 (1911-01-01), Doan
patent: 1381923 (1921-06-01), Kemp
patent: 1476987 (1923-12-01), Larsen
patent: 1495628 (1924-05-01), Adelman
patent: 1624743 (1927-04-01), Kimberlin
patent: 2000630 (1935-05-01), Williams
patent: 3729369 (1973-04-01), Trull
patent: 3884175 (1975-05-01), Bellis
Avila Stephen P.
Sotelo Jesus D.
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