US2588363A - Crawl-fins - Google Patents

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Publication number
US2588363A
US2588363A US677256A US67725646A US2588363A US 2588363 A US2588363 A US 2588363A US 677256 A US677256 A US 677256A US 67725646 A US67725646 A US 67725646A US 2588363 A US2588363 A US 2588363A
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United States
Prior art keywords
toes
foot
pocket
paddle
equipment
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
US677256A
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English (en)
Inventor
Corlieu Louis Marie De
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Individual
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Individual
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Publication date
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Publication of US2588363A publication Critical patent/US2588363A/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
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2208/00—Characteristics or parameters related to the user or player
    • A63B2208/12—Characteristics or parameters related to the user or player specially adapted for children

Definitions

  • the present invention relates to a new equip ment for exercising the feet and toes cf swimmers, particularly children, so as to improve their legstroke especially when doing the crawl.
  • Supple foot movement is an important factor in the development of the leg stroke in the crawl.
  • the role of this exercising equipment and of the propulsicn-exercising equipment, is primarily concerned With the training of children and youths from about 8 to 20.
  • the present invention comprises equipment for exercising the feet and toes of swimmers, comprising a robust plate cf suitaole strength and dimensions, adapted to be attached firmly to the toes by suitable means 50 as to set as a prolongation Of the toes, and. te force them to bond in both directions under the pressure of water when the swimmer performs the leg stroke.
  • the attached drawing shows diagrammatically one form of the improved equipment of the present invention; in the drawing Figure 1 is a longitudinal vertical section of the equipment in use.
  • Figure 2 is a plan view of the same.
  • Figure 3 is a diagrammatic plan of the operative surface of a modification having a relatively good propulsion affect and constituting a combined propulsion-exercising equipment.
  • Figure 4 is a longitudinal elevation of a slightly modified form of the device shown in Figure 1, made in one piece.
  • the improved equipment consists essentially of a strong fiat paddle I made of any suitable material, such as metal, Celluloid, rhodoid, wood, ebonite, artificial resin or the like, properly stiif, and covered if desired by any suitable material or composition.
  • a strong fiat paddle I made of any suitable material, such as metal, Celluloid, rhodoid, wood, ebonite, artificial resin or the like, properly stiif, and covered if desired by any suitable material or composition.
  • This paddle or operative surface l is firmly attached to a close-fitting pocket 2 for the toes.
  • a band 3 which may be of elastic material or adjustable in length is fixed to the pocket in any suitable manner and passes behind the heel. In use this band should be tightly fastened.
  • the equipment is arranged and designed in such a way that the edge of the paddle member l bears exclusively on the toes, and not on the foot itself, so that such paddle member acts as an extension of the toes and forces them to bend to the full extent in both directions relative to the foot under the action of th water when the swimmer performs his leg stroke.
  • the inner edge of the paddle should follow the line of the foot, but the outer edge may usefully extend outwardly at an angle to the line of the foot, e. g. as shovvn in Figure 2.
  • the close-fitting pocket 2 is dispdsed around and under the toes which it encloses in such a way that the paddle l is firmly pressed against the toes.
  • this pocket should not stretch under the sole of the foot, and is limited by the length of the toes themselves, holding them firmly without stifness but without freedom of movement.
  • the apparatus is shown in the drawing with the paddle l arranged above the toes. It is equaliy possible to arrange it beneath the toes as a variation et the exerciser. Similarly, one can use a variation in which the toes are completely en- 3 closed above and beneath, as long as excessive stiffness is avoided.
  • elastic sections 4 and 5 may be provided both above and beneath the pocket so as to hold the edges thereof closely against the foot.
  • a lining 6 of any suitable protective material may be placed in front of the toes in the inside of the close fitting pocket 2, so as to reduce rubbing on the front of the toes which are normally relatively sensitive.
  • this lining 6 may be made of cellular rubber, or any other suitable material, strengthened if desired, and may also contribute to the buoyancy of the equipment.
  • the close fitting pocket 2 may have any suitable shape so as to fit the toes and*hold them firmly, and one or the other of the closing sections 4 or 5 or both may, without undue inconvenience be dispensed With altogether.
  • FIG 3 shows in plan a modification of the paddle I of the apparatus, the remainder being essentially the same as in Figures 1 and 2.
  • the operative surface of the paddle which extends over and beyond the toes can be made of flexible and elastic material so as to improve the propulsive effect achieved by the apparatus, without essentially diminishing its exercising effect.
  • This operative surface may consist for example, of a plate i preferahly made of non-corrodible springy metal, such as hardened austenitic steel and shaped like a trident as shown in Figure 3, this plate being covered with a covering or flap 8 which conforms to the general overall shape shown.
  • This shape may of course have a number of modifications in detail.
  • the plate 1 may have three fingers as in Figure 3, or any other desired number of fingers such as two, three, four or five.
  • the base of the plate may advantageously be strengthened in any suitable manner for a sufiicient distance, and the trailing edge only should be very flexible, the base itself being long and strong.
  • This strong base may, if required, be made separately from its very flexible extension which may be attached to the base in any suitable manner.
  • the metal plate 7, made in one or several pieces, may be so made as to have a progressively decreasing thicknss towards the trailing edge.
  • the equipment may be made entirely or largely of one substance such as rubber or any other similar material, natural or synthetic by moulding or any other process. Ridges or reinforcements of rubber or other material may be arranged either internally or externally, if required.
  • the region of the strong base may be made of ebonite or similar substance.
  • Naturally a graded disposition of ridges or reinf0rcements could be employed, and the accompanying drawing shows equipment designed in accordance with normal engineering practice and not necessarily following the theoretically perfect shape.
  • the general exterior shape of the apparatus should as far as possible be stream-lined, and should become thinner towards the trailing edge with or without reinforcements as required. Buoyancy may be achieved by the use of cellular rubber or other light material or by use of water-tight compartments.
  • the improvement in propulsion results partly from the fiexibility in the region of the trailing edge and in the reduction of eddies around the trailing edge, and partly by the increase of the operative surface of the paddle and of the spread of the trailing edge, as well as the continuity of impelling which of course is a well-known condition.
  • a propelling swim fin for attachment to the foot for exercising the feet of swimmers and more particularly for increasing the suppleness of the joints connecting the toes to the foot during the utilization thereof comp-rising a substantially rigid paddle portion constituting a prolongation of the foot, means defining a short, open-ended, close fitting toe receiving pocket at one end of said paddle portion, said end of the paddle por: tion extending within and longitudinally of said pocket substantially the length thereof, the bottom of the pocket being disposed inwardly of said end a distance such that the pocket accommodates only the toes of the user in juxtaposition to the paddle and fastening means connected to the pocket for passing behind the heel of the user to connect the fin to the foot after the toes have been inserted in the pocket so that utilization of the fin forces all the toes to simultaneously bend in both directions relative to the foot at the joints connecting the toes to the foot responsive to upward and downward movement of the leg in swimming.
  • a propelling swim fin for attachment to the foot for exercising the feet of swimmer5 and more particularly for increasing the suppleness of the joints connecting the toes to the foot during the utilization thereof comprising a substantially rigid paddle portion constituting a prolongation of the foot, means defining a short open-ended close fitting toe receiving pocket at one end of said paddle portion, said end of the paddle portion extending within and longitudinally of said pocket substantially the length thereof, the bottom of the pocket being disposed inwardl of said end a distance such that the pocket accommodates only the toes of the user in juxtaposition to the paddle, fastening means connected to the pocket for passing behind the heel of the user to connect the fin to the foot after the toes have been inserted in the pocket so that utilization of the fin forces all the toes to simultaneously bend in both directions relative to the foot at the joints connecting the toes to the foot responsive to upward and downward movement of the leg in swimming and elastic sections connected with and extending from the pocket in the direction away from the paddle a length such as to dispose such sections above and beneath the foot in the

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Socks And Pantyhose (AREA)
  • Rehabilitation Tools (AREA)
US677256A 1945-06-19 1946-06-17 Crawl-fins Expired - Lifetime US2588363A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR613610X 1945-06-19

Publications (1)

Publication Number Publication Date
US2588363A true US2588363A (en) 1952-03-11

Family

ID=8979628

Family Applications (1)

Application Number Title Priority Date Filing Date
US677256A Expired - Lifetime US2588363A (en) 1945-06-19 1946-06-17 Crawl-fins

Country Status (3)

Country Link
US (1) US2588363A (ja)
BE (1) BE465908A (ja)
GB (1) GB613610A (ja)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3068499A (en) * 1958-01-14 1962-12-18 Biskupsky Wassily Von Foot fins
US3428980A (en) * 1966-12-30 1969-02-25 Jefferson F Newton Swimming equipment
US3908213A (en) * 1972-08-14 1975-09-30 Imp Mfg Co Swim fin
US4521220A (en) * 1983-03-11 1985-06-04 Schoofs Mark J Swim fin for breaststroke swimmers
EP0337221A1 (en) * 1988-04-12 1989-10-18 O'Brien International, Inc. Positive drive swim fin
EP0436927A1 (en) * 1990-01-12 1991-07-17 TECHNISUB S.p.A. A swimming flipper with a composite blade and a method for its manufacture
US5266062A (en) * 1992-07-28 1993-11-30 John L. Runckel Trust Amphibious footwear
US5290194A (en) * 1993-04-16 1994-03-01 Kransco Swim fin with differential stiffness characteristics
US5709575A (en) * 1997-02-25 1998-01-20 Betrock; Irving Practice swim fin with perforations
US6095879A (en) * 1998-05-14 2000-08-01 Mccarthy; Peter T. Methods for creating consistent large scale blade deflections
US6146224A (en) * 1996-01-11 2000-11-14 Mccarthy; Peter T. High efficiency hydrofoil and swim fin designs
US6280272B1 (en) * 1999-07-16 2001-08-28 E Roger Masse Short motion swim fin
US6346021B1 (en) * 1999-07-16 2002-02-12 E. Roger Masse Short motion swim fin
US20020025744A1 (en) * 1998-05-14 2002-02-28 Mccarthy Peter T. Methods for creating large scale focused blade deflections
US6371821B1 (en) 1996-01-11 2002-04-16 Nature's Wing Fin Designs, Llc High efficiency hydrofoil and swim fin designs
US6482059B2 (en) 1997-05-09 2002-11-19 Mccarthy Peter T. High efficiency hydrofoil and swim fin designs
US20040029465A1 (en) * 2002-08-06 2004-02-12 Landel Technology, Inc. Swim training fin
US20040127117A1 (en) * 2002-07-19 2004-07-01 Mccarthy Peter T. High deflection hydrofoils and swim fins
US20090325434A1 (en) * 2008-06-30 2009-12-31 Warnaco Swimwear, Inc. Swim fin
US20130005202A1 (en) * 2011-06-28 2013-01-03 Hsin-Ming Lin Fin for Swimming, Diving and the Like
US9364717B2 (en) 2014-01-16 2016-06-14 Kathleen Davis Swimming fin

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2099973A (en) * 1933-04-06 1937-11-23 Corlieu Louis Marie De Lifesaving and swimming propelling device
US2321009A (en) * 1940-09-27 1943-06-08 Owen P Churchill Swim fin
US2343468A (en) * 1942-11-18 1944-03-07 Lawrence P Romano Propulsion device for swimmers

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2099973A (en) * 1933-04-06 1937-11-23 Corlieu Louis Marie De Lifesaving and swimming propelling device
US2321009A (en) * 1940-09-27 1943-06-08 Owen P Churchill Swim fin
US2343468A (en) * 1942-11-18 1944-03-07 Lawrence P Romano Propulsion device for swimmers

Cited By (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3068499A (en) * 1958-01-14 1962-12-18 Biskupsky Wassily Von Foot fins
US3428980A (en) * 1966-12-30 1969-02-25 Jefferson F Newton Swimming equipment
US3908213A (en) * 1972-08-14 1975-09-30 Imp Mfg Co Swim fin
US4521220A (en) * 1983-03-11 1985-06-04 Schoofs Mark J Swim fin for breaststroke swimmers
US4923419A (en) * 1986-09-30 1990-05-08 Mccarthy Kevin I Positive drive swim fin
EP0337221A1 (en) * 1988-04-12 1989-10-18 O'Brien International, Inc. Positive drive swim fin
EP0436927A1 (en) * 1990-01-12 1991-07-17 TECHNISUB S.p.A. A swimming flipper with a composite blade and a method for its manufacture
US5163859A (en) * 1990-01-12 1992-11-17 Technisub S.P.A. Swimming flipper with a composite blade and a method for its manufacture
US5266062A (en) * 1992-07-28 1993-11-30 John L. Runckel Trust Amphibious footwear
US5290194A (en) * 1993-04-16 1994-03-01 Kransco Swim fin with differential stiffness characteristics
US6719599B2 (en) 1996-01-11 2004-04-13 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
US6146224A (en) * 1996-01-11 2000-11-14 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
US20040248481A1 (en) * 1996-01-11 2004-12-09 Mccarthy Peter T. High efficiency hydrofoil and swim fin designs
US6607411B1 (en) 1996-01-11 2003-08-19 Mccarthy Peter T. High efficiency hydrofoil and swim fin designs
US6371821B1 (en) 1996-01-11 2002-04-16 Nature's Wing Fin Designs, Llc High efficiency hydrofoil and swim fin designs
US6585548B2 (en) 1996-01-11 2003-07-01 Mccarthy Peter T. High efficiency hydrofoil and swim fin designs
US6497597B2 (en) 1996-01-11 2002-12-24 Mccarthy Peter T. High efficiency hydrofoil and swim fin designs
US5709575A (en) * 1997-02-25 1998-01-20 Betrock; Irving Practice swim fin with perforations
US6482059B2 (en) 1997-05-09 2002-11-19 Mccarthy Peter T. High efficiency hydrofoil and swim fin designs
US20080045095A1 (en) * 1998-05-14 2008-02-21 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
US6712656B2 (en) 1998-05-14 2004-03-30 Mccarthy Peter T. Methods for creating consistent large scale blade deflections
US20020025744A1 (en) * 1998-05-14 2002-02-28 Mccarthy Peter T. Methods for creating large scale focused blade deflections
US7018256B2 (en) 1998-05-14 2006-03-28 Mccarthy Peter T Methods for creating large scale focused blade deflections
US20040152376A1 (en) * 1998-05-14 2004-08-05 Mccarthy Peter T. Methods for creating consistent large scale blade blade deflections
US7581997B2 (en) 1998-05-14 2009-09-01 Mccarthy Peter T Method for creating consistent large scale blade deflections
US6843693B2 (en) 1998-05-14 2005-01-18 Mccarthy Peter T. Methods for creating large scale focused blade deflections
US7465205B2 (en) 1998-05-14 2008-12-16 Mccarthy Peter T Methods for creating consistent large scale blade deflections
US6918805B2 (en) 1998-05-14 2005-07-19 Mccarthy Peter T. Methods for creating consistent large scale blade deflections
US6413133B1 (en) 1998-05-14 2002-07-02 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
US6095879A (en) * 1998-05-14 2000-08-01 Mccarthy; Peter T. Methods 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
US6280272B1 (en) * 1999-07-16 2001-08-28 E Roger Masse Short motion swim fin
US6346021B1 (en) * 1999-07-16 2002-02-12 E. Roger Masse Short motion swim fin
US20040127117A1 (en) * 2002-07-19 2004-07-01 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
US20070049140A1 (en) * 2002-07-19 2007-03-01 Mccarthy Peter T High deflection hydrofoils and swim fins
US20050176318A1 (en) * 2002-07-19 2005-08-11 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
US6884134B2 (en) 2002-07-19 2005-04-26 Mccarthy Peter T. High deflection hydrofoils and swim fins
US6979241B2 (en) * 2002-08-06 2005-12-27 Zoomers Swim training fin
US20040029465A1 (en) * 2002-08-06 2004-02-12 Landel Technology, Inc. Swim training fin
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
US20130005202A1 (en) * 2011-06-28 2013-01-03 Hsin-Ming Lin Fin for Swimming, Diving and the Like
US9364717B2 (en) 2014-01-16 2016-06-14 Kathleen Davis Swimming fin

Also Published As

Publication number Publication date
BE465908A (ja)
GB613610A (en) 1948-12-01

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