Marine propulsion – Oar or paddle – Support
Patent
1992-06-22
1993-10-05
Swinehart, Edwin L.
Marine propulsion
Oar or paddle
Support
440106, 440101, B63H 1606
Patent
active
052499960
ABSTRACT:
An oar stop sound dampener which minimizes the sound produced during the rowing of a boat. It is composed of a flexible, solid, closed-cell foam and is placed on the shaft of the oar adjacent to the oar stop on the side toward the paddle. The dampener is a disk having an aperture at its center to accommodate the shaft of the oar and having a segment adjacent to such aperture which segment can be removed from the disk to provide space for the elongated member some oar stops have extending along the shaft of the oar toward the paddle. By keeping the oar stop, which is usually metal, from contacting the oar lock, which is customarily also metal, through the location of the disk and its resistance to compression, and because of the flexible nature of the disk, no discernible sound is produced during rowing; and wear of the oar stop and oar lock is minimized. Since the diameter of the aperture is the same as, or slightly smaller than, the diameter of the shaft of the oar, the oar stop sound dampener is held in place by friction and can readily be removed for cleansing or replacement. Optionally, fabric or a plastic laminate may be adhesively placed on the flat surfaces of the disk (or the fabric can be sewn to such flat surfaces) to minimize wear on the disk as well as degradation of the disk caused by exposure to ultraviolet light.
REFERENCES:
patent: 742490 (1903-10-01), Proy
patent: 1389988 (1921-09-01), Rose
patent: 2105110 (1938-01-01), Drisoll et al.
patent: 2602172 (1952-07-01), Messman
patent: 2987736 (1961-06-01), Wolff
patent: 3095586 (1963-07-01), Baier
Fehr Thompson E.
Swinehart Edwin L.
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