Adjustable rowlock

Details Adjustable rowlock Adjustable rowlock

2011-08-23

2011-08-23

Avila, Stephen (Department: 3617)

Marine propulsion

Oar or paddle

Support

Reexamination Certificate

active

08002598

ABSTRACT:
An adjustable rowlock for changing the orientation of the blade of an oar has a body with a clamp and clamp adjusting means. There is also an oar sleeve having a datum mark to be aligned with a plurality of reference marks arranged on the body. In use, a user may choose from a plurality of orientations of the blade corresponding to the reference marks, to suit the water conditions.

REFERENCES:
patent: 742490 (1903-10-01), Pray
patent: 813762 (1906-02-01), Anderson
patent: 3094821 (1963-06-01), Eckert
patent: 3531865 (1970-10-01), Nelson
patent: 3898950 (1975-08-01), Martin
patent: 4516941 (1985-05-01), Reid
patent: 4889509 (1989-12-01), Pohlus
patent: 5324218 (1994-06-01), Rijnders
patent: 5474008 (1995-12-01), Vespoli et al.
patent: 6183325 (2001-02-01), Purser
patent: 7670201 (2010-03-01), Winter

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