Buoys – rafts – and aquatic devices – Swimming aid to increase stroke efficiency – Foot attached
Reexamination Certificate
2005-04-19
2005-04-19
Wright, Andrew D. (Department: 3617)
Buoys, rafts, and aquatic devices
Swimming aid to increase stroke efficiency
Foot attached
Reexamination Certificate
active
06881113
ABSTRACT:
A new and useful propulsion apparatus for use by a swimmer is provided. The propulsion apparatus comprises (a) a support structure configured for connection to a swimmer's foot, and (b) a fin connected with the support structure by a flexible coupling in a manner that enables the fin to be stroked in alternating downstrokes and upstrokes by flexion of a swimmer's knees. The flexible coupling is configured to enable the fin to rotate in a first direction relative to the support structure during a downstroke, and the propulsion apparatus has a mechanical stop for limiting rotation of the fin in the first direction to physically set the angle of attack on the fin during a downstroke. The flexible coupling comprises an elastic suspension extending between the support structure and the fin, the elastic suspension being configured to (a) allow the fin to rotate in a second direction opposite to the first direction during an upstroke and (b) dynamically set the angle of attack during an upstroke.
REFERENCES:
patent: 1007867 (1911-11-01), Halvorsen
patent: 1237392 (1917-08-01), Schneider
patent: 1452790 (1923-04-01), Claupin
patent: 1702681 (1929-02-01), Barbosa
patent: 1745280 (1930-01-01), Snapp
patent: 3055025 (1962-09-01), Ferraro et al.
patent: 3072932 (1963-01-01), Ciccotelli
patent: 3122759 (1964-03-01), Gongwer
patent: 3204262 (1965-09-01), Gongwer
patent: 3302223 (1967-02-01), Ciccotelli
patent: 3665535 (1972-05-01), Picken
patent: 4025977 (1977-05-01), Cronin
patent: 4342558 (1982-08-01), Wilson
patent: 4541810 (1985-09-01), Wenzel
patent: 4664639 (1987-05-01), Schneider
patent: 4767368 (1988-08-01), Ciccotelli
patent: 4781637 (1988-11-01), Caires
patent: 5429536 (1995-07-01), Evans
patent: 6126503 (2000-10-01), Viale et al.
patent: 6290561 (2001-09-01), Garofalo et al.
patent: 6394863 (2002-05-01), Chen
patent: 925354 (1982-05-01), None
Lawrence R. Oremland PC
Wright Andrew D.
LandOfFree
Propulsion device for use with swimmers does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Propulsion device for use with swimmers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Propulsion device for use with swimmers will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3369616