Stroke cycle phase shift rowing

Marine propulsion – Oar or paddle – Support

Reexamination Certificate

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Details

C440S106000, C114S343000

Reexamination Certificate

active

06881112

ABSTRACT:
A rowing shell adapted for phase shift rowing, seating multiple groups of rowers such that all rowers within a group are seated for synchronous rowing, but each group is seated for asynchronous rowing with respect to the adjacent group. The phase shift rowing overcomes deficiencies encountered In boats supporting unison rowing, and provides greater average velocity for the same power input. The spacing provided between adjacent groups of rowers rowing out of phase is approximately twice or greater than the spacing between adjacent rowers rowing in phase within each group, wherein the spacing is defined by the distance between adjacent oarlock pins.

REFERENCES:
patent: 918994 (1909-04-01), Gallaher et al.
patent: 4411214 (1983-10-01), Horiuchi
patent: 4889509 (1989-12-01), Pohlus
patent: 5016557 (1991-05-01), Miller
patent: 5067426 (1991-11-01), Vespoli et al.
patent: 5188048 (1993-02-01), Vespoli et al.
patent: 5279239 (1994-01-01), Vespoli et al.
patent: 5421285 (1995-06-01), Shaper
patent: 5474008 (1995-12-01), Vespoli et al.
patent: 61030491 (1986-02-01), None
patent: 796078 (1981-01-01), None

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