US3913158A - Swimming fins - Google Patents

Swimming fins Download PDF

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Publication number
US3913158A
US3913158A US063062A US6306270A US3913158A US 3913158 A US3913158 A US 3913158A US 063062 A US063062 A US 063062A US 6306270 A US6306270 A US 6306270A US 3913158 A US3913158 A US 3913158A
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US
United States
Prior art keywords
fin
water
blade
passage
wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US063062A
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English (en)
Inventor
Juan Vilarrubis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nemrod Metzeler SA
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Nemrod Metzeler SA
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Filing date
Publication date
Application filed by Nemrod Metzeler SA filed Critical Nemrod Metzeler SA
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Publication of US3913158A publication Critical patent/US3913158A/en
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B31/00—Swimming aids
    • A63B31/08—Swim fins, flippers or other swimming aids held by, or attachable to, the hands, arms, feet or legs
    • A63B31/10—Swim fins, flippers or other swimming aids held by, or attachable to, the hands, arms, feet or legs held by, or attachable to, the hands or feet
    • A63B31/11—Swim fins, flippers or other swimming aids held by, or attachable to, the hands, arms, feet or legs held by, or attachable to, the hands or feet attachable only to the feet

Definitions

  • ABSTRACT [30] Foreign Application Priority Data
  • a swimming tinto be worn on the foot of the swim- A r 8 1970 S am 378332 mer and having a passage extending longitudinally p p through the fin from at least one surface remote from [52] U S Cl 9/309 the free end of the fin and terminating at the free end [51] In ⁇ .0; 31/10 of the fin, the passage having a larger crosssecfional [58] Fieid 9/309 area at the discharge end than at the inlet end to draw water into the passage and discharge it from the free [56] References Cited end of the fin to facilitate its use and impart thrust to the swimmer.
  • UNITED STATES PATENTS 3,183,529 5/1965 Beuchat 9/309 17 Clam, 5 Drawlng Flgul'es U.S. Patent Oct.21, 1975 3,91
  • the swimming fin of the present invention has a passage extending longitudinally through the fin from an inlet remote from the free end of the fin on at least one side thereof to a discharge at the free end of the fin, the discharge being of greater cross-sectional area than the inlet so that in the ordinary use of the fin in swimming, water will be drawn into the inlet and discharged from the free end of the fin to facilitate the kicking action of the swimmer and to impart additional thrust to the swimmer.
  • the swimming fin of the present invention is also provided with a series of stabilizing vanes spaced apart along the upper and lower surfaces of the fin on both sides of the central portion of the fin to afford a greater stability to the fin when it is in use.
  • the stabilizers on each side of the fin extend generally longitudinally of the fin and are preferably not in alignment. In use the stabilizers help to maintain the fins in proper orientation with respect to the water and to prevent wobble or other erratic movements of the fin which result in loss of propulsion or thrust.
  • FIG. 1 is a prospective view of the swimming fin of the present invention
  • FIG. 2 is a plan view with a portion broken away and shown in cross section
  • FIG. 3 is a view taken along the line 3-3 of FIG. 1 looking in the direction of the arrows;
  • FIG. 4 is a schematic view which illustrates the operation of the swimming fin.
  • FIG. 5 is a fragmentary cross-sectional view illustrating an alternative embodiment of the present invention.
  • the swimming tin of the present invention has a foot-receiving portion at one end having a foot cavity or pocket 11 therein.
  • the fin can be conventionally formed of a single mass of elastomeric material and is held on the foot by an ankle strap 12. This particular structure of the fin forms no part of the present invention, and other means for anchoring the fin to the foot of the swimmer can also be used.
  • a wall extends longitudinally beyond the foot to provide a relatively long and wide fin having relatively large upper and lower surfaces 13 and 14, respectively.
  • Vertically disposed reenforcing ribs 15 extend from the foot-receiving portion 10 of the fin and at least a portion of each rib diverging from each other longitudinally along the edges of the fin on both the upper and lower surfaces.
  • the central portion of the wall contains a longitudinally extending passage 18 which has an intake 16 on at least one of the surfaces 13 and 14 and an outlet or jet exhaust orifice 17 at the free end of the fin, that is to say, the end opposite the foot-receiving portion 10.
  • the fin illustrated in FIGS. 1 through 3. has a single intake or water scoop opening 16 between the foot pocket and the inner edge on the upper surface 13 of the fin.
  • an intake 16 is shown on the upper surface 13 and another intake 24 is shown on the lower surface 14.
  • the longitudinal passage 18 through the fin has a larger cross-sectional area at the discharge than at the inlet.
  • a vertically extending intermediate rib or partition 19 subdivides the passage 18 into a plurality of water passages.
  • recessed channels 20 On both the upper and lower surfaces of the fin there are recessed channels 20 intermediate the central portion of the fin and the edge ribs 15. These recessed channels each contain spaced-apart longitudinally extending vanes 21 which are preferably laterally offset out of alignment with each other. These stabilizers help the swimmer to maintain the fins oriented with respect to the water and prevent erratic motions which fail to generate the maximum thrust or propulsion for the swimmer.
  • FIG. 4 of the drawings The operation of the fins is illustrated in FIG. 4 of the drawings wherein the arrows 22 indicate the direction of the flow of water relative to the outer surfaces of the fins and the arrows 23 indicate the direction of the flow of water through the longitudinal passages of the fins.
  • the arrows 22 indicate the direction of the flow of water relative to the outer surfaces of the fins
  • the arrows 23 indicate the direction of the flow of water through the longitudinal passages of the fins.
  • a swimming fin to be worn on the foot of a swimmer comprising a tin portion wider and longer than the foot of the swimmer and having upper and lower surfaces and a free end, said lower surface presenting a continuous surface to the body of water, means defining a passage extending longitudinally through said fin portion out of communication with said lower surface and terminating in a discharge end of larger crosssectional area than the inlet end, means defining an intake to said passage on the said upper surface and remote from the free end, and means defining a discharge opening at the free end of the fin portion, whereby in the ordinary use of the fin in swimming water is drawn into the passage by reason of the larger cross-sectional area at the discharge end and discharged therefrom in a direction longitudinally of the free end of the fin.
  • a swimming fin as set forth in claim 1 in which said portion of the fin is relatively flat and in which the passage gradually increases in width toward the discharge end thereof.
  • a swimming fin as set forth in claim 2 including a longitudinally extending wall within said passage to subdivide the passage and re-inforce the fin.
  • a swimming fin as set forth in claim 1 including a pair of longitudinally extending ribs extending along the side edges of the said fin portion, flow channels adjacent said longitudinally extending ribs and stabilizer vanes upstanding in said flow channels for stabilizing the fin.
  • a swimming fin as set forth in claim 4 in which there is a plurality of stabilizing vanes within each flow channel and in which said stabilizing vanes within each channel are spaced longitudinally and out of alignment.
  • a swimming fin to be worn on the foot of a swimmer comprising a foot-receiving portion, a fin portion extending longitudinally beyond said foot-receiving portion, the free end opposite said foot-receiving portion being substantially wider, an upstanding rib along both edges of the fin portion and on both the upper and lower surfaces of said fin portion, a recessed flow channel adjacent each of the said ribs and a plurality of fins in each flow channel which are spaced apart longitudinally to permit controlled flexing of the fin and laterally offset so as not to be in alignment.
  • a swimming fin as set forth in claim 7 including a longitudinally extending, relatively flat passage through the center of said fin portion having a discharge end at the free end of the fin portion of larger cross-sectional area than the inlet end of said passage and having no communication with the lower surface of the fin, means defining an intake to said passage on the upper surface of the fin remote from the free end of the fin, and means defining a discharge opening at the free end of the fin portion, whereby in the ordinary use of the fin in swimming, water is drawn into the passage by reason ofthe larger cross-sectional area at the discharge end and discharged therefrom in a direction longitudinally of the free end of the fin.
  • a swim fin which comprises: wall means to define a foot pocket, first and second side ribs extending forwardly from said foot pocket wall means, at least portions of said side ribs diverging relative to each other in a direction away from said foot pocket wall means, and wall means extending between said side ribs and forming the blade of the swim fin, at least part of said blade wall means being a top wall, said top wall terminating, at the inner end portion thereof relatively adjacent said' foot pocket wall means, at an inner edge which is spaced from said foot pocket wall means, said top wall terminating, at the outer end portion thereof remote from said foot pocket wall means, in a region which is adjacent the tip of said blade, at least part of said blade wall means being a bottom wall which is spaced from said top wall, said bottom wall terminating, at the outer end portion thereof remote from said foot pocket wall means, in a region which is adjacent the tip of said blade, said top and bottom walls cooperating with each other in defining at least one water passage, said water passage terminating at its inner end in a water-s
  • a swim fin which comprises a blade adapted to be employed in propelling a swimmer through the water, means provided at one end of said blade to mount the same to the foot of a swimmer, water-scoop means provided on the top of said blade and directed to receive water in response to downward movement of the foot of said swimmer when said swimmer is in a facedown position, said water-scoop means being disposed relatively adjacent said mounting means, jet-exhaust means provided at the other end of said blade remote from said mounting means, said jet-exhaust means being directed to discharge water in a direction away from said mounting means, and passage means to conduct water from said water-scoop means to said jetexhaust means for discharge through the latter, said passage means being defined in part by upper and lower walls which extend from said water-scoop means to said other end of said blade and substantially separate the water flowing through said passage means from the water passing along the exterior of said blade.
  • jet-exhaust means comprises orifice means disposed at the extreme tip of said other end of said blade, said tip being the portion of said blade most remote from said mounting means.
  • a swim fin which comprises: wall means to define a foot pocket, first and second side ribs extending forwardly from said foot pocket wall means, at least portions of said side ribs diverging relative to each other in a direction away from said foot pocket wall means, intermediate rib means located between said first and second side ribs and extending forwardly from said foot pocket wall means, a top wall connected to said side ribs and to said intermediate rib means, said top wall extending to the tip of said blade, said top wall forming the top surface of the blade of said fin, said top wall terminating, at the inner portion thereof relatively adjacent said foot pocket wall means, in inner edges which are spaced forwardly from said foot pocket wall means, and a bottom wall connected to said side ribs and to said intermediate rib means, said bottom wall extending to the tip of said blade, said bottom wall forming the bottom surface of the blade of said fin, said bottom wall being spaced from said top wall, at least portions of said bottom wall extending to said foot pocket wall means, said top and bottom walls cooperating with said side rib
  • foot pocket wall means, said side ribs, said rib means, and said top and bottom walls are formed integrally of a single mass of elastomeric material.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Toys (AREA)
  • Special Spraying Apparatus (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Tires In General (AREA)
US063062A 1970-04-08 1970-08-12 Swimming fins Expired - Lifetime US3913158A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES37833270 1970-04-08

Publications (1)

Publication Number Publication Date
US3913158A true US3913158A (en) 1975-10-21

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ID=8455562

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US063062A Expired - Lifetime US3913158A (en) 1970-04-08 1970-08-12 Swimming fins

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US (1) US3913158A (2)
JP (1) JPS5119233B1 (2)
DE (1) DE2101479A1 (2)
FR (1) FR2092329A5 (2)
GB (1) GB1344363A (2)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4083071A (en) * 1976-01-20 1978-04-11 Roland Forjot Swim flippers
US4627820A (en) * 1985-06-18 1986-12-09 Penebre Larry M Swim fin
US4737127A (en) * 1985-11-12 1988-04-12 Under Sea Industries, Inc. Hydrodynamic swim fin
US4832644A (en) * 1987-04-10 1989-05-23 Roberts Elizabeth B Heel protector for swim fin
US4887985A (en) * 1984-05-03 1989-12-19 Amf Incorporated Swim fin provided with a self-shaping, fluid flow conveying and controlling canal-like member
USD355012S (en) 1993-06-25 1995-01-31 Dacor Corporation Swimming fin
US5387145A (en) * 1993-07-07 1995-02-07 Wagner; John L. Swim fins
US5702277A (en) * 1993-07-07 1997-12-30 Wagner; John Lee High performance swim fin
US6227924B1 (en) 2000-03-06 2001-05-08 Philip W. Miller Swim fin heel strap
US6364728B1 (en) * 1999-09-08 2002-04-02 Htm Sport S.P.A. Swimming flipper with controlled-flexibility blade
US20040029465A1 (en) * 2002-08-06 2004-02-12 Landel Technology, Inc. Swim training fin
DE10238881A1 (de) * 2002-08-09 2004-03-04 Chia-Te Hu Taucherflossen
US20040248481A1 (en) * 1996-01-11 2004-12-09 Mccarthy Peter T. High efficiency hydrofoil and swim fin designs
US20050026519A1 (en) * 2003-08-01 2005-02-03 Chia-Te Hu Diving fins
US6884134B2 (en) * 2002-07-19 2005-04-26 Mccarthy Peter T. High deflection hydrofoils and swim fins
US20050181689A1 (en) * 1998-05-14 2005-08-18 Mccarthy Peter T. Methods for creating consistent large scale blade deflections
US7018256B2 (en) 1998-05-14 2006-03-28 Mccarthy Peter T Methods for creating large scale focused blade deflections
US20090325434A1 (en) * 2008-06-30 2009-12-31 Warnaco Swimwear, Inc. Swim fin
US9186554B2 (en) 2013-09-13 2015-11-17 Randall Wade Lord Swim fin for leg amputees
US9364717B2 (en) 2014-01-16 2016-06-14 Kathleen Davis Swimming fin
US20190366159A1 (en) * 2018-05-30 2019-12-05 Qbas Co., Ltd. Fin with secondary blade set

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3183529A (en) * 1964-03-16 1965-05-18 Beuchat Georges Swimmer's foot-fin with thrust-accelerating device
US3302222A (en) * 1963-12-05 1967-02-07 Ferraro Luigi Swimming flipper

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51980B2 (2) * 1971-08-23 1976-01-13

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3302222A (en) * 1963-12-05 1967-02-07 Ferraro Luigi Swimming flipper
US3183529A (en) * 1964-03-16 1965-05-18 Beuchat Georges Swimmer's foot-fin with thrust-accelerating device

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4083071A (en) * 1976-01-20 1978-04-11 Roland Forjot Swim flippers
US4887985A (en) * 1984-05-03 1989-12-19 Amf Incorporated Swim fin provided with a self-shaping, fluid flow conveying and controlling canal-like member
US4627820A (en) * 1985-06-18 1986-12-09 Penebre Larry M Swim fin
US4737127A (en) * 1985-11-12 1988-04-12 Under Sea Industries, Inc. Hydrodynamic swim fin
US4832644A (en) * 1987-04-10 1989-05-23 Roberts Elizabeth B Heel protector for swim fin
USD355012S (en) 1993-06-25 1995-01-31 Dacor Corporation Swimming fin
US5387145A (en) * 1993-07-07 1995-02-07 Wagner; John L. Swim fins
US5702277A (en) * 1993-07-07 1997-12-30 Wagner; John Lee High performance swim fin
US20040248481A1 (en) * 1996-01-11 2004-12-09 Mccarthy Peter T. High efficiency hydrofoil and swim fin designs
US20070173143A1 (en) * 1996-01-11 2007-07-26 Mccarthy Peter T High efficiency hydrofoil and swim fin designs
US7101240B2 (en) 1996-01-11 2006-09-05 Mccarthy Peter T High efficiency hydrofoil and swim fin designs
US20080032574A1 (en) * 1998-05-14 2008-02-07 Amy L. Goldman Method for creating consistent large scale blade deflections
US20070173142A1 (en) * 1998-05-14 2007-07-26 Mccarthy Peter T Methods for creating consistent large scale blade deflections
US7862395B2 (en) 1998-05-14 2011-01-04 Mccarthy Peter T Methods for creating consistent large scale blade deflections
US7581997B2 (en) 1998-05-14 2009-09-01 Mccarthy Peter T Method for creating consistent large scale blade deflections
US7465205B2 (en) 1998-05-14 2008-12-16 Mccarthy Peter T Methods for creating consistent large scale blade deflections
US20050181689A1 (en) * 1998-05-14 2005-08-18 Mccarthy Peter T. Methods for creating consistent large scale blade deflections
US20080045095A1 (en) * 1998-05-14 2008-02-21 Mccarthy Peter T Methods for creating consistent large scale blade deflections
US7018256B2 (en) 1998-05-14 2006-03-28 Mccarthy Peter T Methods for creating large scale focused blade deflections
US6364728B1 (en) * 1999-09-08 2002-04-02 Htm Sport S.P.A. Swimming flipper with controlled-flexibility blade
US6227924B1 (en) 2000-03-06 2001-05-08 Philip W. Miller Swim fin heel strap
US20050176318A1 (en) * 2002-07-19 2005-08-11 Mccarthy Peter T. High deflection hydrofoils and swim fins
US20070049140A1 (en) * 2002-07-19 2007-03-01 Mccarthy Peter T High deflection hydrofoils and swim fins
US7601041B2 (en) 2002-07-19 2009-10-13 Mccarthy Peter T High deflection hydrofoils and swim fins
US20070037459A1 (en) * 2002-07-19 2007-02-15 Mccarthy Peter T High deflection hydrofoils and swim fins
US6884134B2 (en) * 2002-07-19 2005-04-26 Mccarthy Peter T. High deflection hydrofoils and swim fins
US20040029465A1 (en) * 2002-08-06 2004-02-12 Landel Technology, Inc. Swim training fin
US6979241B2 (en) * 2002-08-06 2005-12-27 Zoomers Swim training fin
DE10238881A1 (de) * 2002-08-09 2004-03-04 Chia-Te Hu Taucherflossen
US20050026519A1 (en) * 2003-08-01 2005-02-03 Chia-Te Hu Diving fins
US20090325434A1 (en) * 2008-06-30 2009-12-31 Warnaco Swimwear, Inc. Swim fin
US7753749B2 (en) 2008-06-30 2010-07-13 Warnaco Swimwear, Inc. Swim fin
US9186554B2 (en) 2013-09-13 2015-11-17 Randall Wade Lord Swim fin for leg amputees
US9364717B2 (en) 2014-01-16 2016-06-14 Kathleen Davis Swimming fin
US20190366159A1 (en) * 2018-05-30 2019-12-05 Qbas Co., Ltd. Fin with secondary blade set

Also Published As

Publication number Publication date
DE2101479A1 (de) 1971-10-28
JPS5119233B1 (2) 1976-06-16
FR2092329A5 (2) 1972-01-21
GB1344363A (en) 1974-01-23

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