WO2014142689A1 - Folding swim fin - Google Patents
Folding swim fin Download PDFInfo
- Publication number
- WO2014142689A1 WO2014142689A1 PCT/PL2014/000020 PL2014000020W WO2014142689A1 WO 2014142689 A1 WO2014142689 A1 WO 2014142689A1 PL 2014000020 W PL2014000020 W PL 2014000020W WO 2014142689 A1 WO2014142689 A1 WO 2014142689A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fin according
- fin
- strip
- membrane
- base
- Prior art date
Links
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
-
- 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
-
- 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
- A63B2031/112—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 with means facilitating walking, e.g. rectractable, detachable or pivotable blades
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2209/00—Characteristics of used materials
- A63B2209/02—Characteristics of used materials with reinforcing fibres, e.g. carbon, polyamide fibres
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2209/00—Characteristics of used materials
- A63B2209/02—Characteristics of used materials with reinforcing fibres, e.g. carbon, polyamide fibres
- A63B2209/023—Long, oriented fibres, e.g. wound filaments, woven fabrics, mats
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2210/00—Space saving
- A63B2210/50—Size reducing arrangements for stowing or transport
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2225/00—Miscellaneous features of sport apparatus, devices or equipment
- A63B2225/68—Miscellaneous features of sport apparatus, devices or equipment with article holders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D49/00—Machines or devices for sawing with straight reciprocating saw blades, e.g. hacksaws
- B23D49/10—Hand-held or hand-operated sawing devices with straight saw blades
- B23D49/11—Hand-held or hand-operated sawing devices with straight saw blades for special purposes, e.g. offset-blade hand; Hand saws having spaced blades; Hand saws for sawing grooves or square holes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D51/00—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends
- B23D51/01—Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends characterised by the handle
Definitions
- the object of the invention is a folding swim fin used for recreational swimming, sport swimming or underwater work.
- Fins have been used for years as a swimming-aiding device, and especially a diving-aiding device.
- the construction of fins is dictated mainly by their intended use. Fins for underwater work which are used to precisely maintain the underwater position of the diver have a different construction than fins for high-speed swimming or deep diving.
- monolithic structures made of plastic or rubber are predominant. A significant problem in these cases is the weight of the fins, as well as their size, especially when transporting them to the place of use.
- the fins consist of a frame stiffened by tension members pivotally connected to a frame.
- the tension members are used to selectively position and tension or fold the fin.
- the frame consists of two semi-rigid elements, each of them divided into three distinct elements. The first element located along the foot and intended to attach the fin to the foot, the second element connecting the element attaching to the foot with the third element which is substantially parallel to the edge of the foot. Between the third elements of the frame, a sheet of elastic material, tensioned by means of a folding strut between symmetrical elements of the frame, is located.
- folding fins applied to the legs of a swimmer are known.
- the fins consist of a frame in the shape of an isosceles triangle, the legs of which are articulately connected with each other at the ends in the heel of the frame and through a folding element which constitutes the third side of the frame triangle. Between side legs of the triangle frame, a fabric is attached, the said fabric being attached to the third side of the frame triangle after its unfolding.
- fins for hands and feet, with their surface variable when swimming are known.
- the fins consist of an elastic membrane tensioned between at least two ribs. Strutting ribs are articulately attached to the fin part intended to be attached to the swimmer's foot. Articulated joints for attaching the ribs are provided with springs. The springs cause the rib to bend when loading the fin on one side while a blockage prevents the surface from changing when moving in the opposite direction.
- the object of the invention is a folding swim fin which comprises a base, arms, an elastic membrane tensioned between the arms and elements for attaching the fin to the swimmer's feet.
- Two opposite edges (1 and 2) of the flexible membrane (3) are attached each to one elastic strip (5).
- the flexible membrane (3) is made of plastic material, preferably reinforced with fibres.
- a preferred variant of the invention is a membrane woven with durable fibres.
- the membrane (5) is reinforced with fibres, preferably carbon fibres and/or Kevlar fibres, and/or glass fibres, and/or polyamide fibres, and/or aramid fibres.
- the strip (5) is attached to a rigid beam (6) of the base, belonging to a pair of beams connected to each other by a hinge (7) placed at a distance of 0 to 1/3 of the beam (6) length from the beam end opposite to the place of the strip (5) attachment.
- the hinge (7) may be an articulating hinge. It may also be placed inside the profile of the beam (6) as a uniaxial hinge.
- the base beam (6) has a tubular shape of rectangular or oval section.
- the base beam (6) is made of plastic or steel, or aluminium, or titanium, or composite of glass, polyamide, Kevlar or aramid fibres bonded with resin.
- a blockage (8) located near the outer end of the base beams (6), and the other two edges of the membrane (3) remain free.
- the blockage (8) is also used to adjust tension of the membrane (3).
- a winding shaft (9) is attached to the hinge (7) for changing the bearing surface of the fin.
- one of the strips (5), of the pair of strips is attached to the base beam (6) so as to ensure free rotation of the strip about its longitudinal axis, thereby constituting the winding shaft (9) for changing the bearing surface of the fin.
- a mounting rail (10) for attaching tools is possibly attached.
- the elastic strips (5) are made of plastic or composite of fibres bonded with resin.
- the fibres of the strip (5) are selected from the group of fibres: glass, polyamide, Kevlar, carbon fibre or aramid fibre.
- the strips (5) have a rectangular cross-section.
- the cross-section of the strip (5) is constant along the longitudinal axis of the strip (5).
- the cross-section of the strip (5) varies along the longitudinal axis of the strip in such a way that the thickness of the strip is the largest at the place of connection of the strip (5) with the base beam (6), and the smallest at the strip end opposite to the base beam.
- the membrane (3) has the shape of an isosceles trapezium stretched between the strips (5) of equal length.
- the strips (5), of the pair of strips have different lengths
- the membrane (5) has the shape of a figure with at least two straight sides.
- the strip (5) may be attached to the base beam (6) via a rotary drum (11) with an axis of rotation parallel to the longitudinal axis of the strip (5).
- the blockage (8) of the operating form of the fin is constituted by a bolt (12) attached articulately with its one end to one of the base beams (6), and with the other end to the other beam (6) through an ovular opening (12), and immobilised with a lock (13), preferably a nut or a knob.
- the fin according to the invention has a low weight, and the articulated connection of the membrane arms allows folding of the fin for the time of transport, especially transport to remote dive sites. The low weight of the fin and the possibility of folding it also help to organise military equipment, especially during marches in military diving applications.
- Fig. 1 shows a view of a basic variant of the fin
- Fig. 2 shows a view of a basic variant of the fin
- Fig. 2 shows a variant of the fin with the use of strips 5 of different lengths
- Fig. 3 shows a variant of the fin with a membrane winder on the strip
- Fig. 4 shows a fragmentary view of the fin with a distinct membrane winder
- Fig. 5 shows a projection of the fin with a rail for attaching tools
- Fig. 6 shows a view of the fin with an attached entrenching tool
- Fig. 7 shows the fin with an attached saw
- Fig. 8 shows projections of the fin with a uniaxial hinge and with broken beams of the base.
- Base beams 6 are made of aluminium profile of square cross-section and are articulately connected to each other by a hinge 7, located in 1/10 of the distance from the end of the beams.
- the hinge 7 is constituted by a rigid pin 14, the ends of which are mounted on axles 15 vertically attached in the base beams 6.
- a blockage 8 of the beams' position, after unfolding the fin to the usable form, is placed.
- the blockage is constituted by a bolt 12 articulately attached to the beam 6 and carried through an ovular opening 13 in another beam 6.
- an elastic strip 5 made of carbon fibre composite and polyester resin is removably attached.
- the strips 5 have the same length and, along their entire length, a uniform cross-section.
- Example 2 Fins with the use of strips 5 of different lengths and of a membrane 3 of irregular shape.
- Base beams 6 are made of aluminium profile of square cross-section and are articulately connected to each other by a hinge 7, located in 1/10 of the distance from the end of the beams.
- the hinge 7 is constituted by a rigid pin 15, the ends of which are mounted on axles 16 vertically attached in the base beams 6.
- a blockage 8 of the beams' position, after unfolding the fin to the usable form, is placed.
- the blockage is constituted by a bolt 12 articulately attached to the beam 6 and carried through an ovular opening 13 in another beam 6.
- an elastic strip 5 made of carbon fibre composite and polyester resin is removably attached.
- the strips 5 have different lengths and, along their entire length, a uniform cross-section.
- a leg of the quadrangle of the membrane 3 is attached to each strip.
- bands 17 for attaching the fin to the swimmer's leg are stretched.
- the change of bearing surface of the fin is allowed by replacing the membrane 3 with the one with an appropriate surface, which in practice means the use of a membrane with shorter bases and with trapezium legs of invariable length.
- the change of bearing surface can also be done by disconnecting the longer one of the strips 5 from the base beam 6 and by winding, on the strip, an excess of the membrane 3, and by reattaching the strip 5 to the base beam 6.
- the blockage 8, in the usable position of the fin allows tension of the membrane 3.
- Base beams 6 of the fin are articulately connected to each other by a hinge 7, located in 1/10 of the distance from the end of the beams.
- the hinge 7 is constituted by a rigid pin 15, the ends of which are mounted on axles 16 vertically attached in the base beams 6.
- a blockage 8 of the beams' position, after unfolding the fin to the usable form, is placed.
- the blockage is constituted by a bolt 12 articulately attached to the beam 6 and carried through an ovular opening 13 in another beam 6.
- One of the strips 5, of the pair of strips is attached to the base beam 6 so as to ensure free rotation of the strip about its longitudinal axis and constitutes a winding shaft 9 of a membrane 3, and the base beam 6 is provided, on the extension of the titanium profile, with a seating 19 for placing a rotation shaft 11 located in the front wall of the bracket 20 of the strip 5.
- the rotation shaft 11 is provided, around its circumference, with latch elements 18 for positioning the strip 5.
- the strips 5 have the same length. The thickness of the strips 5 decreases along their longitudinal axis.
- a leg of the regular trapezium of the membrane 3 is attached. Between the base beams 6, bands 17 for attaching the fin to the swimmer's leg are stretched. The change of bearing surface of the fin is allowed by the rotation of the strip 5 on the shaft 11.
- the blockage 8, in the usable position of the fin, allows tension of the membrane 3.
- Base beams 6 are made of titanium profile of square cross-section and are articulately connected to each other by a hinge 7, located in 1/10 of the distance from the end of the beams.
- the hinge 7 is constituted by a rigid pin 15, the ends of which are mounted on axles 15 vertically attached in the base beams 6.
- a blockage 8 of the beams' position, after unfolding the fin to the usable form, is placed.
- an elastic strip 5 made of glass fibre composite and polyester resin is attached to each beam 6.
- an axle 21 of a winding shaft 9 is attached to each strip.
- a leg of the regular trapezium of the membrane 3 is attached.
- the fin has a rail 10 of tubular shape of rectangular section attached to a beam 6 from a side opposite to the attachment of the fin to the swimmer's foot.
- the rail 10, on its outer surface, is covered with a fluting 22 which constitutes a surface making it easier to tread particularly on slippery ground.
- Example 6 The fin according to Example 6 has a rectangular handle of an entrenching tool 23, inserted into a rail 10.
- the fin according to Example 6 has a rectangular handle of a saw 24, inserted into a rail 10.
- Base beams 6 are made of aluminium profile of square cross-section and are connected to each other by a broken hinge 7, located on the edge of the beams.
- the hinge has one axis of rotation.
- an elastic strip 5 made of carbon fibre composite and polyester resin is removably attached.
- the strips 5 have the same length and, along their entire length, a uniform cross-section.
- a leg of the regular trapezium of the membrane 3 is attached.
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020157028685A KR20150122257A (en) | 2013-03-11 | 2014-03-07 | Folding Swim Fin |
JP2015562960A JP2016514994A (en) | 2013-03-11 | 2014-03-07 | Foldable swim fin |
RU2015143267A RU2015143267A (en) | 2013-03-11 | 2014-03-07 | FOLDING FAST |
US14/774,206 US20160023053A1 (en) | 2013-03-11 | 2014-03-07 | Folding swim fin |
AU2014230089A AU2014230089A1 (en) | 2013-03-11 | 2014-03-07 | Folding swim fin |
CN201480025285.2A CN105188858A (en) | 2013-03-11 | 2014-03-07 | Folding swim fin |
ZA2015/07583A ZA201507583B (en) | 2013-03-11 | 2015-10-12 | Folding swim fin |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PLP-403075 | 2013-03-11 | ||
PL403075A PL226836B1 (en) | 2013-03-11 | 2013-03-11 | Folded swimming fin |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014142689A1 true WO2014142689A1 (en) | 2014-09-18 |
Family
ID=50483458
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/PL2014/000020 WO2014142689A1 (en) | 2013-03-11 | 2014-03-07 | Folding swim fin |
Country Status (9)
Country | Link |
---|---|
US (1) | US20160023053A1 (en) |
JP (1) | JP2016514994A (en) |
KR (1) | KR20150122257A (en) |
CN (1) | CN105188858A (en) |
AU (1) | AU2014230089A1 (en) |
PL (1) | PL226836B1 (en) |
RU (1) | RU2015143267A (en) |
WO (1) | WO2014142689A1 (en) |
ZA (1) | ZA201507583B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106976534B (en) * | 2017-05-10 | 2023-08-11 | 朱光 | Variable tail fin device for swimming |
EP4037785A4 (en) * | 2019-10-03 | 2023-10-18 | Uniwersystet Slaski w Katowicach | Swim fin with a longitudinally moulded blade |
US11148008B1 (en) | 2020-05-08 | 2021-10-19 | Charles Ryan O'Neill | Self-rescue swim fin belt |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1607857A (en) * | 1926-05-27 | 1926-11-23 | Zukal Frank | Swimming device |
US4250584A (en) | 1979-06-11 | 1981-02-17 | Gerhard Korn | Collapsable swim fin |
US4264994A (en) | 1977-07-06 | 1981-05-05 | Carbone Giovanni M | Articulated flippers for hands and feet, with a surface variable during swimming |
FR2575927A1 (en) * | 1985-01-16 | 1986-07-18 | Rolland Thierry | Folding flippers |
US4907519A (en) * | 1988-11-21 | 1990-03-13 | Yoram Gil | Propulsion aids for attachment to a swimmer's feet |
US4952183A (en) | 1989-07-17 | 1990-08-28 | Yoram Gil | Collapsible propulsion aids for swimmer's feet |
US5242321A (en) * | 1992-08-13 | 1993-09-07 | Yoram Gil | Flipper-type swimming propulsion aids |
US20090088036A1 (en) * | 2007-09-28 | 2009-04-02 | Giovanni Garofalo | Swimming flipper |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5161309A (en) * | 1992-04-27 | 1992-11-10 | Graves David A | Predator defense swim fin |
US7140398B2 (en) * | 2002-01-28 | 2006-11-28 | Alliance Design And Development Group, Inc. | Sports equipment having a tubular structural member |
-
2013
- 2013-03-11 PL PL403075A patent/PL226836B1/en unknown
-
2014
- 2014-03-07 RU RU2015143267A patent/RU2015143267A/en not_active Application Discontinuation
- 2014-03-07 KR KR1020157028685A patent/KR20150122257A/en not_active Application Discontinuation
- 2014-03-07 JP JP2015562960A patent/JP2016514994A/en active Pending
- 2014-03-07 AU AU2014230089A patent/AU2014230089A1/en not_active Abandoned
- 2014-03-07 US US14/774,206 patent/US20160023053A1/en not_active Abandoned
- 2014-03-07 WO PCT/PL2014/000020 patent/WO2014142689A1/en active Application Filing
- 2014-03-07 CN CN201480025285.2A patent/CN105188858A/en active Pending
-
2015
- 2015-10-12 ZA ZA2015/07583A patent/ZA201507583B/en unknown
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1607857A (en) * | 1926-05-27 | 1926-11-23 | Zukal Frank | Swimming device |
US4264994A (en) | 1977-07-06 | 1981-05-05 | Carbone Giovanni M | Articulated flippers for hands and feet, with a surface variable during swimming |
US4250584A (en) | 1979-06-11 | 1981-02-17 | Gerhard Korn | Collapsable swim fin |
FR2575927A1 (en) * | 1985-01-16 | 1986-07-18 | Rolland Thierry | Folding flippers |
US4907519A (en) * | 1988-11-21 | 1990-03-13 | Yoram Gil | Propulsion aids for attachment to a swimmer's feet |
US4952183A (en) | 1989-07-17 | 1990-08-28 | Yoram Gil | Collapsible propulsion aids for swimmer's feet |
US5242321A (en) * | 1992-08-13 | 1993-09-07 | Yoram Gil | Flipper-type swimming propulsion aids |
US20090088036A1 (en) * | 2007-09-28 | 2009-04-02 | Giovanni Garofalo | Swimming flipper |
Also Published As
Publication number | Publication date |
---|---|
US20160023053A1 (en) | 2016-01-28 |
AU2014230089A1 (en) | 2015-11-05 |
JP2016514994A (en) | 2016-05-26 |
ZA201507583B (en) | 2016-04-28 |
CN105188858A (en) | 2015-12-23 |
PL403075A1 (en) | 2014-09-15 |
RU2015143267A3 (en) | 2018-07-19 |
RU2015143267A (en) | 2017-04-13 |
KR20150122257A (en) | 2015-10-30 |
PL226836B1 (en) | 2017-09-29 |
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