Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS2865033 A
Publication typeGrant
Publication dateDec 23, 1958
Filing dateDec 28, 1955
Priority dateMay 24, 1955
Also published asDE968018C
Publication numberUS 2865033 A, US 2865033A, US-A-2865033, US2865033 A, US2865033A
InventorsJayet David L
Original AssigneeDavid Jayet
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Shoe provided with asymmetrical swimming webs
US 2865033 A
Images(1)
Previous page
Next page
Description  (OCR text may contain errors)

Dec. 23, 1958 SHOE PROVIDED WITH ASYMMETRICAL SWIMMING WEBS Filed Dec. 28. 1955 M y www United States Patent O SHOE PROVIDED WITH ASYMMETRICAL SWIMMIN G WEBS David L. Jayet, Giez s. Yverdon, Switzerland, assignor, by mesne assignments, to David Jayet, Le Trayas (Var), France Application December 28, 1955, Serial No. 556,015

Claims priority, application Switzerland May 24, 1955 2 Claims. (Cl. 9-21) Known shoes provided with swimming webs, which will be referred to hereinafter briefly as swimming fins, are of two dilerent types: symmetrical and asymmetrical. In contrast to the asymmetrical, the symmetrical swimming tins can be worn on either the left or the right foot. Owing to the construction of the asymmetrical swimming fins there is always a right swimming fin and a left swimming iin. In all known symmetrical or asymmetrical swimming iins, however, there is always a sole side, so that these swimming ns cannot be put on the foot upside down.

The swimming iin according to the present invention obviates all these disadvantages but retains the undeniable advantage which the asymmetrical swimming fin accords in driving oneself forwards, and is characterized in that the web portion, the side ridges and the cavity are constructed symmetrically with respect to the central plane, so that the same swimming iin can be worn on either the right or left foot.

One constructional form of the swimming fin according to the invention is illustrated diagrammatically and by way of example in the accompanying drawings.

Fig. l is a plan view of the swimming iin.

Fig. 2k is a sectional view taken on the line II-II of Fig. l.

Fig. 3 is a sectional view taken on the line III--III of Fig. 1.

Figs. 4 and 5 show two different ways of wearing the swimming ns.

The swimming fin illustrated in the drawings has a web portion 1 which is connected fast at each side to lateral ridges 2 and is also provided with intermediate ridges 4. Said web portion and said ridges are constructed asymmetrically with respect to a vertical longitudinal plane b (Fig. l) through the height and length of the fin, but symmetrically relatively to a horizontal longitudinal plane a (Fig. 2) through the width and length ofthe n, and carry two walls 5 which are disposed symmetrically with respect to the plane a. These walls form, together with rear prolongation of the lateral ridges, a cavity 6 which is likewise constructed symmetrically relatively to both planes a and b, and is intended for containing the front part of the swimmers foot. The terminal edges 7 of these walls come to lie on the instep so that the heel remains outside the cavity 6. A strap 8 surrounds the heel, its ends being held in two buckles 9. Each buckle consists of a metal frame, one end 10 of which extends through a hole 12 provided in a widened part 11 of the lateral ridges. This frame 10 carries a bar 13 which is slidable along the two longitudinal sides of the said frame. The end of the strap 8 is bent in known manner about this bar, so that when the strap is pulled, the end of the strap 8 is clamped and held fast between the wall 14, the end 15 and the bar-13.

Figs. 4 and 5 show two possible ways of wearing the swimming fins. These figures illustrate that the same lin can be worn either on the left or the right foot. Normally the swimming tins are worn as shown in Fig. 4, the big toe of each foot acting upon the longest part of the web portion, which also requires relatively considerable force in order to be moved. However these swimming ns can also be used in the reverse arrangement as is shown in Fig. 5.

Each swimming iin consists of a single manufactured piece, e. g. made of rubber or another soft and elastic material. This material is preferably very elastic and pliant, so as not to injure the skin of the feet unnecessarily. In order to make it possible to provide very pliant walls 5, the side ridges are kept very high. As is illustrated, their height c is equal to the height of the foot cavity 6. In this way the swimming fin can be made of a very elastic and pliant material and yet retain the requisite strength.

Since the swimming n which has been described is symmetrical relatively to the plane a, it can be worn on either the right or left foot. As a result, the two swimming iins making up one pair can consist of two exactly identical, asymmetrical swimming ns, which can be made by means of the same casting or press mould. This feature is of great advantage to the manufacturer, and also for the sellers and users of swimming fins. In fact, on the on-e hand only one mould need be used for manufacturing each separate size of swimming n, and on the other hand storage and despatch of the tins is greatly simplified, since they need no longer be stored in pairs but need only be stacked according to size.

It goes without saying that certain parts of the swimming fins may be made out of a softer, more pliant material as other parts of said swimming ns. Thus for instance the shoe, that is to say, the walls of the cavity 6 may be made out of a more pliant material than the ns. The swimming n according to the invention may also be made out of two diierent materials having different qualities, e. g. different mechanical properties.

I claim:

1. An asymmetrical swimming iin comprising walls forming a cavity having length, width and height, said cavity having a rst plane extending through the width and length thereof and a second plane at right angles thereto extending through the height and length thereof, said cavity being symmetrical with respect to both said planes, and a web portion extending from said walls, said rst plane extending through said web portion, said web portion being symmetrical with respect to said first plane but asymmetric with respect to said second plane, said web having lateral and intermediate ridges of unequal length reinforcing said web portion, said ridges being symmetrical with respect to said rst plane.

2. An asymmetrical fin as set forth in claim 1, wherein said lateral ridges comprise rear prolongations reinforcing the lateral walls of said cavity, buckles articulated to the rear ends of said lateral ridges, said buckles being symmetrical with respect to said second plane, and a heel strap clamped in said buckles.

References Cited in the file of this patent UNITED STATES PATENTS Re. 23,006 Churchiu June s, 1943 2,423,571 Wilen July 8, 1947 2,803,894 Morgan Aug. 27, 1957 FOREIGN PATENTS 323,623 Italy Dec. 31, 1934 1,096,129 France v Dec. 29, 1954

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2423571 *Dec 20, 1944Jul 8, 1947Wilen Charles HSwimming tail
US2803894 *Mar 25, 1955Aug 27, 1957Morgan Thomas PArticle of footwear
USRE23006 *Sep 27, 1940Jun 15, 1948 Swim fin
FR1096129A * Title not available
IT323623B * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4923419 *Apr 12, 1988May 8, 1990Mccarthy Kevin IPositive drive swim fin
US5266062 *Jul 28, 1992Nov 30, 1993John L. Runckel TrustAmphibious footwear
US5290194 *Apr 16, 1993Mar 1, 1994KranscoSwim fin with differential stiffness characteristics
US5595518 *Apr 19, 1993Jan 21, 1997Ours; RogerFin device, in particular for water sports, and method of manufacture of such a device
US5975973 *Jun 3, 1998Nov 2, 1999Sontaria Holdings Pty Ltd.Swim fin
US6095879 *May 13, 1999Aug 1, 2000Mccarthy; Peter T.Methods for creating consistent large scale blade deflections
US6146224 *May 18, 1999Nov 14, 2000Mccarthy; Peter T.High efficiency hydrofoil and swim fin designs
US6354894 *Apr 13, 2000Mar 12, 2002Robert B. EvansSpear-blade swim fin
US6371821Nov 14, 2000Apr 16, 2002Nature's Wing Fin Designs, LlcHigh efficiency hydrofoil and swim fin designs
US6413133 *Aug 1, 2000Jul 2, 2002Mccarthy Peter T.Methods for creating consistent large scale blade deflections
US6482059Feb 1, 2001Nov 19, 2002Mccarthy Peter T.High efficiency hydrofoil and swim fin designs
US6497597Mar 5, 2002Dec 24, 2002Mccarthy Peter T.High efficiency hydrofoil and swim fin designs
US6585548Jan 4, 2002Jul 1, 2003Mccarthy Peter T.High efficiency hydrofoil and swim fin designs
US6607411Jan 4, 2002Aug 19, 2003Mccarthy Peter T.High efficiency hydrofoil and swim fin designs
US6712656Dec 28, 2001Mar 30, 2004Mccarthy Peter T.Methods for creating consistent large scale blade deflections
US6719599Nov 19, 2002Apr 13, 2004Mccarthy Peter T.High efficiency hydrofoil and swim fin designs
US6843693May 9, 2001Jan 18, 2005Mccarthy Peter T.Methods for creating large scale focused blade deflections
US6871420 *Mar 6, 2002Mar 29, 2005George ShikhashviliWater shoe
US6884134Jul 18, 2003Apr 26, 2005Mccarthy Peter T.High deflection hydrofoils and swim fins
US6918805Jan 22, 2004Jul 19, 2005Mccarthy Peter T.Methods for creating consistent large scale blade deflections
US6979241 *Aug 6, 2002Dec 27, 2005ZoomersSwim training fin
US7018256Jun 25, 2004Mar 28, 2006Mccarthy Peter TMethods for creating large scale focused blade deflections
US7101240Nov 13, 2003Sep 5, 2006Mccarthy Peter THigh efficiency hydrofoil and swim fin designs
US7465205Jul 19, 2006Dec 16, 2008Mccarthy Peter TMethods for creating consistent large scale blade deflections
US7581997Sep 5, 2007Sep 1, 2009Mccarthy Peter TMethod for creating consistent large scale blade deflections
US7601041Aug 21, 2006Oct 13, 2009Mccarthy Peter THigh deflection hydrofoils and swim fins
US7862395Sep 7, 2007Jan 4, 2011Mccarthy Peter TMethods for creating consistent large scale blade deflections
EP0337221A1 *Apr 1, 1989Oct 18, 1989O'Brien International, Inc.Positive drive swim fin
WO1999058203A2 *May 14, 1999Nov 18, 1999Peter T MccarthyMethods for creating consistent large scale blade deflections
Classifications
U.S. Classification441/64, D21/806
International ClassificationA63B31/11, A63B31/00
Cooperative ClassificationA63B31/11
European ClassificationA63B31/11