Methods for creating consistent large scale blade deflections

Buoys – rafts – and aquatic devices – Swimming aid to increase stroke efficiency – Foot attached

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Reexamination Certificate

active

07862395

ABSTRACT:
Methods are disclosed to design resilient hydrofoils (164) which are capable of having substantially similar large scale blade deflections under significantly varying loads. The methods permit the hydrofoil (164) to experience significantly large-scale deflections to a significantly reduced angle of attack under a relatively light load while avoiding excessive degrees of deflection under increased loading conditions. A predetermined compression range on the lee portion of said hydrofoil (164) permits the hydrofoil (164) to deflect to a predetermined reduced angle of attack with significantly low bending resistance. This predetermined compression range is significantly used up during the deflection to the predetermined angle of attack in an amount effective to create a sufficiently large leeward shift in the neutral bending surface with the load bearing portions of the hydrofoil (164) to permit the hydrofoil (164) to experience a significantly large increase in bending resistance as increased loads deflect the hydrofoil (164) beyond the predetermined reduced angle of attack. The shift in the neutral bending surface causes a significant increase in the elongation range required along an attacking portion of the hydrofoil (164) after the predetermined angle of attack is exceed. Methods are also disclosed for designing the hydrofoil (164) so that it has a natural resonant frequency that is sufficiently close the frequency of the reciprocating strokes used to attain propulsion in an amount sufficient to create harmonic wave addition that creates an amplified oscillation in the free end of the reciprocating hydrofoil (164).

REFERENCES:
patent: 144538 (1873-11-01), Harsen
patent: 169396 (1875-11-01), Ahlstrom
patent: 783012 (1905-02-01), Biedermann et al.
patent: 871059 (1907-11-01), Douse
patent: 998146 (1911-07-01), Alfier et al.
patent: 1061264 (1913-05-01), Bys
patent: 1324722 (1917-12-01), Bergin
patent: 1607857 (1926-05-01), Zukal
patent: 1684714 (1927-08-01), Perry
patent: 2241305 (1939-02-01), Hill, Jr
patent: 2321009 (1940-09-01), Churchill
patent: 2343468 (1944-03-01), Messinger
patent: 2423571 (1947-07-01), Wilen
patent: 2588363 (1952-03-01), Corlieu
patent: 2865033 (1958-12-01), Jayet
patent: 2889563 (1959-06-01), Lamb et al.
patent: 2903719 (1959-09-01), Wozeneraft
patent: 2950487 (1960-08-01), Woods
patent: 3019458 (1962-02-01), De Barbieri et al.
patent: 3055025 (1962-09-01), Ferraro et al.
patent: 3082442 (1963-03-01), Cousteau et al.
patent: 3084355 (1963-04-01), Ciccotelli
patent: 3086492 (1963-04-01), Holley
patent: 3109495 (1963-11-01), Lang
patent: 3112503 (1963-12-01), Girden
patent: 3171142 (1965-03-01), Auzols
patent: 3239857 (1966-03-01), Gwynne
patent: 3256540 (1966-06-01), Novelli
patent: 3411165 (1968-11-01), Murdoch
patent: 3422470 (1969-01-01), Mares
patent: 3453981 (1969-07-01), Gause
patent: 3491997 (1970-01-01), Winters
patent: 3665535 (1972-05-01), Picken
patent: 3773011 (1973-11-01), Gronier
patent: 3810269 (1974-05-01), Tabata
patent: 3913158 (1975-10-01), Vilarrubis
patent: 3922741 (1975-12-01), Semeia
patent: 3934290 (1976-01-01), Le Vasseur
patent: 3952351 (1976-04-01), Gisbert
patent: 4007506 (1977-02-01), Rasmussen
patent: 4025977 (1977-05-01), Cronin
patent: 4083071 (1978-04-01), Forjot
patent: 4193371 (1980-03-01), Baulard-Caugan
patent: 4197869 (1980-04-01), Moncrieff-Yeates
patent: 4209866 (1980-07-01), Loeffler
patent: 4342558 (1982-08-01), Wilson
patent: D278165 (1985-03-01), Evans
patent: 4521220 (1985-06-01), Schoofs
patent: 4541810 (1985-09-01), Wenzel
patent: 4657515 (1987-04-01), Ciccotelli
patent: 4689029 (1987-08-01), Ciccotelli
patent: 4738645 (1988-04-01), Garofalo
patent: 4752259 (1988-06-01), Tackett et al.
patent: 4773885 (1988-09-01), Ciccotelli
patent: 4775343 (1988-10-01), Lamont et al.
patent: 4781637 (1988-11-01), Caires
patent: 4795385 (1989-01-01), Matsuoka
patent: 4820218 (1989-04-01), Van de Pol
patent: D302999 (1989-08-01), McCredie
patent: 4857024 (1989-08-01), Evans
patent: 4869696 (1989-09-01), Ciccotelli
patent: 4895537 (1990-01-01), Ciccotelli
patent: 4929206 (1990-05-01), Evans
patent: 4934971 (1990-06-01), Picken
patent: 4940437 (1990-07-01), Piatt
patent: 4944703 (1990-07-01), Mosier
patent: 4954111 (1990-09-01), Cressi
patent: 4954112 (1990-09-01), Negrini et al.
patent: D327933 (1992-07-01), Evans
patent: D327934 (1992-07-01), Evans
patent: D327935 (1992-07-01), Evans
patent: D328118 (1992-07-01), Evans
patent: 5163859 (1992-11-01), Beltrani et al.
patent: D340272 (1993-10-01), Evans
patent: 5304081 (1994-04-01), Takizawa
patent: 5324219 (1994-06-01), Beltrani et al.
patent: 5356323 (1994-10-01), Evans
patent: 5358439 (1994-10-01), Paolo
patent: D353181 (1994-12-01), Evans
patent: 5374210 (1994-12-01), Sardella
patent: 5387145 (1995-02-01), Wagner
patent: 5417599 (1995-05-01), Evans
patent: 5429536 (1995-07-01), Evans
patent: 5435764 (1995-07-01), Testa et al.
patent: 5443593 (1995-08-01), Garofalo
patent: 5522748 (1996-06-01), Cressi
patent: 5527197 (1996-06-01), Evans
patent: 5533918 (1996-07-01), Sanders
patent: 5595518 (1997-01-01), Ours
patent: 5597336 (1997-01-01), Evans
patent: 5634613 (1997-06-01), McCarthy
patent: D393684 (1998-04-01), Lin
patent: 5746631 (1998-05-01), McCarthy
patent: D396897 (1998-08-01), Evans
patent: 5810629 (1998-09-01), Parr
patent: D404456 (1999-01-01), Evans
patent: 6050868 (2000-04-01), McCarthy
patent: 6053788 (2000-04-01), Garofalo
patent: 6095879 (2000-08-01), McCarthy
patent: 6126503 (2000-10-01), Viale et al.
patent: 6146224 (2000-11-01), McCarthy
patent: 6290561 (2001-09-01), Garofalo et al.
patent: 6364728 (2002-04-01), Viale et al.
patent: 6371821 (2002-04-01), McCarthy
patent: 6413133 (2002-07-01), McCarthy
patent: 6482059 (2002-11-01), McCarthy
patent: 6497597 (2002-12-01), McCarthy
patent: 6585548 (2003-07-01), McCarthy
patent: 6607411 (2003-08-01), McCarthy
patent: 6712656 (2004-03-01), McCarthy
patent: 6719599 (2004-04-01), McCarthy
patent: 6843693 (2005-01-01), McCarthy
patent: 6884134 (2005-04-01), McCarthy
patent: 6884136 (2005-04-01), McCarthy
patent: 6918805 (2005-07-01), McCarthy
patent: 7465205 (2008-12-01), McCarthy
patent: 7581997 (2009-09-01), McCarthy

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Methods for creating consistent large scale blade deflections does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Methods for creating consistent large scale blade deflections, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods for creating consistent large scale blade deflections will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2697814

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.