US2321009A - Swim fin - Google Patents

Swim fin Download PDF

Info

Publication number
US2321009A
US2321009A US358637A US35863740A US2321009A US 2321009 A US2321009 A US 2321009A US 358637 A US358637 A US 358637A US 35863740 A US35863740 A US 35863740A US 2321009 A US2321009 A US 2321009A
Authority
US
United States
Prior art keywords
water
devices
foot
fin
swimming
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
US358637A
Other languages
English (en)
Inventor
Owen P Churchill
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.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to BE460045D priority Critical patent/BE460045A/xx
Application filed by Individual filed Critical Individual
Priority to US358637A priority patent/US2321009A/en
Application granted granted Critical
Publication of US2321009A publication Critical patent/US2321009A/en
Priority to GB10444/43A priority patent/GB568101A/en
Priority to CH254269D priority patent/CH254269A/de
Priority to FR940894D priority patent/FR940894A/fr
Priority to GB158/48A priority patent/GB602230A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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

  • My invention relates to a novel type of swimiln which is'attached to the feet and is used as an aid in swimming, water treading, lifesaving, and in other aquatic pursuits.
  • My invention more particularly relates to imjprovements in swimming devices, which are worn on the feet of the person engaged in aquatic activities and whereby the swimming speed is materially increased.
  • My invention in the experience of aquatic experts, instructors and professional swimmers, represents an emcient and practical improvement in swimmin means. It has been approved and is being regularly employed by professional swimming instructors, coaches, swimmers, life guards and the like.
  • the use of devices embodying my invention enables a person to propel his body through the water at a materially increased speed and at a minimum of effort and fatigue.
  • the device may be used with equal advantages for either lon or short distance swimming.
  • the feet and legs of a human being were not designed by nature for swimming and other water activities and the use of my invention converts the feet into swimming members of correct hydrodynamic structure and design.
  • the divices employing my invention likewise act to elevate the feet of the swimmer and thereby tend to overcome a problem which always confronts persons who are learning to swim, as it is difficult for a beginner to keep the feet elevated.
  • the use of my invention enables a person to tread water much more efficiently and safely and in that respect is a distinct advantage to persons employed as life guards, for it enables them to perform rescue work in a manner which is otherwise thought to be impractical if not impossible.
  • the life guard while using devices incorporating my invention can much more easily stand erect in the water with chest and shoulders above water and thereby have the complete free use of his arms and hands in performing the rescue work. He can also much more readily support and propel the other person through the water because of the increased swimming efficiency which the devices provide.
  • Devices embodying my invention have special utility in that they permit a relaxation of the ankles which is desirable in advanced swimming.
  • the devices are also highly efficient for increasing speed while swimming under water.
  • Devices embodying my invention may be used with great efliciency by persons engaged in diving.
  • the devices may be employed in such sports and industries as the following: spearing fish, abalone hunting, lobster catching, pearl diving, etc. They may also be used very successfully for swimming under water or for standing in and treading water whenit becomes necessary to inspect and disengage mooring lines and anchor chains of vessels which have become fouled or tangled and generally to inspect the condition of a vessel's hull which is at or below the water line.
  • the devices enable the user to have the free use of his hands and arms while supporting himself in the water by means of the devices in a substantially upright position.
  • My invention so materially increases the speed of a swimmer that ordinarily a person using same can swim as fast without his hands as he could by employing his feet and legs without the devices.
  • the devices also enable life guards and others who desire to wear life belts and jackets to progress with material speed through the water, which is ordinarily very difllcult, if not impossible, without the use of my invention.
  • Devices employing my invention can be used with equal efficiency for any kind of a kick employed in speed and short or long distance swimming. They have been found advantageous for the scissors kick, the flutter kick, the frog kick. and all other well known movements of the legs and feet which are variously employed by swimmers.
  • the devices enable a person to attain what may be termed a propeller push which resembles the action of a fish fln or tail.
  • the tapering of the devices affords a fish fin streamlining which gives an increased area of push or propulsion with a minimum of water resistance.
  • I dispense entirely with any and all metal reinforcements. I thereby decrease the weight of the devices and attain such advantages as increased flexibility, which is desirable while walking with the devices on dry land or in riding surf boards and the like, and also while using the devices in the water; I eliminate the necessity of utilizing the type of crepe rubber which which have a longer life than does crepe rubber: I overcome the inherent disadvantages of metal which will rust and break and bend while in use and which tends to tear the enclosing rubber structure under certain conditions of use. The hazard of injury to the wearer which is ever present in the use of metal is entirely eliminated in my invention. My devices are also constructed so as to fit the feet of the wearer which advantage is attained by molding and curving the foot pocket over the instep so as to afford a snug but comfortable fit or closure.
  • An object of my invention is to provide in a swim-fin of the character described a relatively flexible construction which when in use in the water will adapt itself to the movement of the feet and legs while swimming, treading water, and the like, and which with a minimum of water resistance will aiford an increased area of propulslon.
  • a further object of my invention is to provide in a swim-fin of the character described a propelling device which may be utilized by beginners as well as by expert swimmers, life guards and others, and which materially increases the speed while swimming and which likewise increases the buoyancy of the body while at rest or standing in the water.
  • Another object of my invendon is to provide in a swim-fin of the character cescribed a symmetrical stream-lined molded rubber device which is relatively simple and inexepensive to manufacture and which can be molded and manufactured in one piece.
  • devices which embody the invention of the aforementioned Patent 2,099,973 are made in approximately 18 pieces which are cemented together and which have all of the disadvantages which are inherent in such construction. For instance. pieces may pull apart while in use and devices embodying my invention will last longer and will stand considerably greater stress and strain than the other type of devices. 7
  • a still further object of my invention is to provide in a device of the character described a hole or orifice disposed in the bottom thereof, which permits the expulsion of water and sand which may collect in the foot pocket and which at the same time provides a suction cup or grip when the devices are used by a person standing or walking, on a slippery Surface, such as surf boards, aquaplanes and the like.
  • Another object of my invention is to provide in a device of the character described reinforcing beads along the top and bottom sides thereof which aiford sufiicient firmness but at the same time provide the desired degrees of flexibility to permit the eiiicient use of the device.
  • Devices incorporating my invention may be made of rubber or of synthetic rubber or other rubber substitutes and compounds.
  • Figure l is a perspective of the devices attached to the feet of a swimmer in substantially horizontal position.
  • Figure 2 is a top plan view of a pair of the devices. the upper one being intended for the left foot and the lower one for the right foot.
  • Figure 3 is a side elevation of the device intended for the left foot.
  • Figure 4 is a longitudinal cross-section of the device taken on the line 4-4 of Figure 2.
  • Figure 5 is a bottom plan view of the device intended for the right foot.
  • Figure 6 is a horizontal cross-section taken on the line 6li of Figure 4.
  • Figure 7 is a horizontal cross-section taken on the line 1-1 of Figure 4.
  • Figure 8 is a horizontalcross-section taken on the line 8ll of Figure 4.
  • the preferred form chosen to illustrate my invention comprises a left fin l and a right fin I.
  • An eleastlc heel strap 2 constitutes the "heel" portion of the device and joins a central portion 3 which consists of a hollow wedge shaped foot pocket 4 having a convexly curved top 5 and bottom 6.
  • An equivalent structure and form might eliminate the convex curvatures, but I prefer them as shown to conform to the instep and ball of the foot respectively.
  • a hole or orifice 'l is disposed in the bottom of the central portion for drainage purposes and to provide a suction cup on flat surfaces.
  • the "toe" portion ll of the device which joins the central portion is relatively ilat and of increasing breadth and in the preferred form has a curved diagonal end 9, although a straight edge could be used.
  • reinforcing tapered beads I0 extendingalong the upper and lower sides or edges of the central and "toe portions of the device and which extend substantially to the end of the said toe" portion. It is important that these beads provide a firmnass to the structure sufilcient to withstand collapse under water pressure but sufllcient iiexibllity to permit a yielding of the flu progressively toward the "toe" portion as the fin is moved against the water.
  • my invention may be described as follows: The left finis placed on the left foot of the wearer and the right tin on the right foot, by inserting the foot within the foot pocket comprising the central portion, so that the heel strap engages the foot just above the heel or at the point where the achilles tendon is located.
  • streamlining or hydrodynamic shape embodied in a. structure flexible yet firm enough to withstand collapse under water pressure, utilizes an action similar to that of a fish's flu or tail, and imparts a thrust duringboth oscillating movements of the foot. 4
  • the devices may be utilized for swimming, either in the normal position or on the back, and will afford increased speed notwithstanding the type of leg kick which may be employed.
  • the hole in the bottom of the center section will act as a suction cup more securely to hold the fin against the wet surface thereof.
  • the hole will also act as an outlet for sand and water which might otherwise collect and remain in the foot pocket.
  • the fin is used for life saving, it will be found that the user can readily support himself in an upright position in the water and have the full and free use of his arms and hands.
  • a swim-fin of resilient material adapted to be mounted on the foot and embodying a hydrodynamic fin shape comprising a heel gripping section, a central section forming a pocket to receive the forepart of the foot, and a toe extension web continuing the natural wedge shape of the foot, the toe extension web having one side diverging with respect to the other toward the free end, and said end being diagonally formed whereby the outer side is longer than the inner A side, the central section and the toe extension under resistance of water and displacing water with a propeller-like thrust when moved at right angles to the normal plane of said fin.
  • a hydrodynamic fin shape comprising a heel gripping section, a central section forming a pocket to receive the forepart of the foot, and a toe extension web continuing the natural wedge shape of the foot, the toe extension web having one side diverging with respect to the other toward the free end, and said end being diagonally formed whereby the outer side is longer than the inner A side, the central section and the toe extension under resistance of water and
  • a swim-fin of resilient material adapted to be mounted on the foot and embodying a hydrodynamic fln shape comprising a heel gripping section, a central section forming a pocket to receive the forepart of the foot, and a toe extension web continuing the natural wedge shape of the foot, the said heel gripping section, central section and toe extension web having one side diverging with respect to the other from the heel toward the free end of the extension, the wedge being longer along the outer side than on the inner side, the end of the toe extension web being substantially diagonal from the shorter side to the longer side, and marginal reinforcements along the said sides whereby the fin is rendered more flexible in the region of its medial longitudinal lines than along its sides, tending to cup under resistance of water and displacing water with a propeller-like thrust when moved at right angles to the normal plane of said fin, said marginal reinforcements comprising beads raised from the upper and lower surfaces of the fins whereby a directional thrust is imparted for the displacement of water longitudinally along the surfaces of the fln.
  • a swim-fin of resilient material adapted to be mounted on the foot and embodying a hydrodynamic fln shape comprising a heel gripping section, a central section forming a pocket to receive the forepart of the foot, and a toe extension web continuing the natural wedge shape of the foot, the said heel gripping section, central section and toe extension web having one side diverging with respect to the other from the heel toward the free end of the extension, the wedge being longer along the outer side than on the inner side, the end of the toe extension web being substantially diagonal from the shorter side to the longer side, and marginal reinforcements along the said sides whereby the fin is rendered more flexible in the region of its media] longitudinal lines than along its sides, tending to cup having a gradually increasing flexibility toward the said end.
  • a swim-fin of resilient material adapted to be mounted on the foot and embodying a hydrodynamic fln shape comprising a heel gripping section, a central section forming a pocket to receive the forepart of the foot, and a toe extension web continuing the natural wedge shape of the foot, the said heel gripping section, central section and toe extension web having one side diverging with respect to the other from the heel toward the free end of the toe extension, the wedge being longer along the outer side than on the inner side, the end of the toe extension being substantially diagonal from the shorter side to the longer side, and marginal reinforcements along the said sides whereby the fin is rendered more flexible in the region of its medial longitudinal line than along its sides, tending to cup under resistance of water and displacing water with a propeller-like thrust when moved at right angles to the normal plane of said fin, said marginal reinforcements comprising beads raised from the upper and lower surfaces of the flns whereby a directional thrust is imparted for the displacement of water longitudinally along the surfaces of the fin,
  • a swim-fin of resilient material adapted to be mounted on the foot and embodying a hydrodynamic fln shape comprising a heel gripping section, a central section forming a pocket to receive the forepart of the foot, and a toe extension web having one side diverging with respect to the other toward the free end.
  • the toe extension web being relatively thin throughout its medial portion. and having marginal beads relatively thick at thin forward portion and tapering to merge into the planes of the web toward the end thereof, whereby the web is rendered increasingly flexible toward the end and a directional thrust is imparted for the displacement of water longitudinally along the surfaces of the fln.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Toys (AREA)
  • Table Devices Or Equipment (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US358637A 1940-09-27 1940-09-27 Swim fin Expired - Lifetime US2321009A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
BE460045D BE460045A (nl) 1940-09-27
US358637A US2321009A (en) 1940-09-27 1940-09-27 Swim fin
GB10444/43A GB568101A (en) 1940-09-27 1943-06-28 Improvements in or relating to a swim-fin
CH254269D CH254269A (de) 1940-09-27 1945-07-13 Schwimmflosse.
FR940894D FR940894A (fr) 1940-09-27 1945-07-13 Perfectionnements aux nageoires pour la natation
GB158/48A GB602230A (en) 1940-09-27 1948-01-02 Improvements in or relating to a swim-fin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US358637A US2321009A (en) 1940-09-27 1940-09-27 Swim fin

Publications (1)

Publication Number Publication Date
US2321009A true US2321009A (en) 1943-06-08

Family

ID=23410457

Family Applications (1)

Application Number Title Priority Date Filing Date
US358637A Expired - Lifetime US2321009A (en) 1940-09-27 1940-09-27 Swim fin

Country Status (5)

Country Link
US (1) US2321009A (nl)
BE (1) BE460045A (nl)
CH (1) CH254269A (nl)
FR (1) FR940894A (nl)
GB (2) GB568101A (nl)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2423571A (en) * 1944-12-20 1947-07-08 Charles H Wilen Swimming tail
US2588363A (en) * 1945-06-19 1952-03-11 Corlieu Louis Marie De Crawl-fins
US2672629A (en) * 1949-04-14 1954-03-23 Trell Jack K La Swimmer's propulsion aid
US2889563A (en) * 1956-02-27 1959-06-09 Edward W Lamb Swim flipper
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
US5906525A (en) * 1997-07-16 1999-05-25 Melius; John David Swim fins flexible body/boot, firm wing caudal tail/blade and possible modular construction for versatility
WO1999058203A3 (en) * 1998-05-14 1999-12-29 Peter T Mccarthy 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
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
US6568973B2 (en) 2000-02-25 2003-05-27 Salvas Sub S.P.A. Swim or dive fin
US6568974B2 (en) 2000-09-29 2003-05-27 Scubapro Europe S.R.L. Swim and scuba fin
US20040127117A1 (en) * 2002-07-19 2004-07-01 Mccarthy Peter T. High deflection hydrofoils and swim fins
US9364717B2 (en) 2014-01-16 2016-06-14 Kathleen Davis Swimming fin
US9643055B2 (en) 2015-10-08 2017-05-09 Tyr Sport, Inc. Swim fin
USD838796S1 (en) * 2017-03-13 2019-01-22 Finis Inc. Asymmetric swim fin
USD886223S1 (en) 2019-02-08 2020-06-02 Tyr Sport, Inc. Swim fin
US10744374B1 (en) 2019-04-08 2020-08-18 Tyr Sport, Inc. Swim fin with an upper portion having debossed regions and triple-bladed rails
US10905175B1 (en) 2020-05-21 2021-02-02 Tyr Sport, Inc. Swimsuit with tension bands and reinforcement liners

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE969680C (de) * 1951-08-23 1958-07-03 Walter Schmitz Schwimmflosse
NL176430B (nl) * 1952-02-28 Therachemie Chem Therapeut Werkwijze ter bereiding van haarkosmetische middelen.
GB746764A (en) * 1953-03-23 1956-03-21 E T Skinner & Company Ltd Improvements in or relating to swim-fins
DE1075997B (de) * 1954-12-30 1960-02-18 Ernst Langhans Dipl Ing Am Fuss zu befestigende Schwimmflosse
DE1033566B (de) * 1955-09-26 1958-07-03 Barakuda Ges Ristau & Co Schwimmflosse
DE1078913B (de) * 1956-02-21 1960-03-31 Philipp M Winter Fa Aus einem Stueck elastischen Werkstoffes bestehende Schwimmflosse
US4565369A (en) * 1983-04-01 1986-01-21 Bedgood Douglas H Aquatic exercising device

Cited By (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2423571A (en) * 1944-12-20 1947-07-08 Charles H Wilen Swimming tail
US2588363A (en) * 1945-06-19 1952-03-11 Corlieu Louis Marie De Crawl-fins
US2672629A (en) * 1949-04-14 1954-03-23 Trell Jack K La Swimmer's propulsion aid
US2889563A (en) * 1956-02-27 1959-06-09 Edward W Lamb Swim flipper
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
WO1994023804A1 (en) * 1993-04-16 1994-10-27 Kransco Swim fin with differential stiffness characteristics
AU674914B2 (en) * 1993-04-16 1997-01-16 Mattel, Inc. Swim fin with variable stiffness
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
US6146224A (en) * 1996-01-11 2000-11-14 Mccarthy; Peter T. 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
US6371821B1 (en) 1996-01-11 2002-04-16 Nature's Wing Fin Designs, Llc 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
US6719599B2 (en) 1996-01-11 2004-04-13 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
US6482059B2 (en) 1997-05-09 2002-11-19 Mccarthy Peter T. High efficiency hydrofoil and swim fin designs
US5906525A (en) * 1997-07-16 1999-05-25 Melius; John David Swim fins flexible body/boot, firm wing caudal tail/blade and possible modular construction for versatility
US20040152376A1 (en) * 1998-05-14 2004-08-05 Mccarthy Peter T. Methods for creating consistent large scale blade blade deflections
US6918805B2 (en) 1998-05-14 2005-07-19 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
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
US6413133B1 (en) * 1998-05-14 2002-07-02 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
US6843693B2 (en) 1998-05-14 2005-01-18 Mccarthy Peter T. Methods for creating large scale focused blade deflections
US7581997B2 (en) 1998-05-14 2009-09-01 Mccarthy Peter T Method for creating consistent large scale blade deflections
US20080032574A1 (en) * 1998-05-14 2008-02-07 Amy L. Goldman 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
US7018256B2 (en) 1998-05-14 2006-03-28 Mccarthy Peter T Methods for creating large scale focused blade deflections
US6095879A (en) * 1998-05-14 2000-08-01 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
WO1999058203A3 (en) * 1998-05-14 1999-12-29 Peter T Mccarthy Methods for creating consistent large scale blade deflections
US6568973B2 (en) 2000-02-25 2003-05-27 Salvas Sub S.P.A. Swim or dive fin
US6568974B2 (en) 2000-09-29 2003-05-27 Scubapro Europe S.R.L. Swim and scuba fin
US20070049140A1 (en) * 2002-07-19 2007-03-01 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
US20050176318A1 (en) * 2002-07-19 2005-08-11 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
US7601041B2 (en) 2002-07-19 2009-10-13 Mccarthy Peter T High deflection hydrofoils and swim fins
US20040127117A1 (en) * 2002-07-19 2004-07-01 Mccarthy Peter T. High deflection hydrofoils and swim fins
US9364717B2 (en) 2014-01-16 2016-06-14 Kathleen Davis Swimming fin
US9643055B2 (en) 2015-10-08 2017-05-09 Tyr Sport, Inc. Swim fin
USD838796S1 (en) * 2017-03-13 2019-01-22 Finis Inc. Asymmetric swim fin
USD886223S1 (en) 2019-02-08 2020-06-02 Tyr Sport, Inc. Swim fin
US10744374B1 (en) 2019-04-08 2020-08-18 Tyr Sport, Inc. Swim fin with an upper portion having debossed regions and triple-bladed rails
US10905175B1 (en) 2020-05-21 2021-02-02 Tyr Sport, Inc. Swimsuit with tension bands and reinforcement liners
US11058157B1 (en) 2020-05-21 2021-07-13 Tyr Sport, Inc. Swimsuit with tension bands and reinforcement liners

Also Published As

Publication number Publication date
FR940894A (fr) 1948-12-27
CH254269A (de) 1948-04-30
GB602230A (en) 1948-05-21
GB568101A (en) 1945-03-19
BE460045A (nl)

Similar Documents

Publication Publication Date Title
US2321009A (en) Swim fin
US2889563A (en) Swim flipper
US4541810A (en) Swimming apparatus
US3268927A (en) Skin diver fin
US3765042A (en) Swim training paddle
US2017463A (en) Swimming device
US4521220A (en) Swim fin for breaststroke swimmers
US4437842A (en) Surfing device
USRE23006E (en) Swim fin
US6764362B1 (en) Monofin swimming apparatus
US3112503A (en) Swimming device
US5348503A (en) Underwater paddle and vertical fin for swimmer
US5356323A (en) Closed shoe swim fin
US4923419A (en) Positive drive swim fin
US4820218A (en) Swim fin
US5277636A (en) Personal flotation device
US5709575A (en) Practice swim fin with perforations
JP6955764B2 (ja) 水陸両用バランスボード構造
US6065416A (en) Wind propelled watercraft
US3432868A (en) Float-equipped wading boots with propelling fins
US3945068A (en) Swimmer's aid
US2395844A (en) Foot fin
WO1996007455A1 (en) Body surfing suits
US5975973A (en) Swim fin
US7083485B2 (en) Multiple-serial-hydrofoil swim fins