EP1591145A1 - Method of reinforcing the blades of diving fins, and fins produced in this way - Google Patents
Method of reinforcing the blades of diving fins, and fins produced in this way Download PDFInfo
- Publication number
- EP1591145A1 EP1591145A1 EP04106290A EP04106290A EP1591145A1 EP 1591145 A1 EP1591145 A1 EP 1591145A1 EP 04106290 A EP04106290 A EP 04106290A EP 04106290 A EP04106290 A EP 04106290A EP 1591145 A1 EP1591145 A1 EP 1591145A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blade
- inserts
- fin
- laminar
- insert
- 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.)
- Withdrawn
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
- the present invention relates to diving fins, and more particularly the method for reinforcing the blades of fins by the insertion during the moulding stage of laminar inserts of materials having differing characteristics of flexibility and/or elasticity inside the fin blade.
- These laminar inserts may have a structural function, for stiffening e.g. particular regions of the fin blade, or may have an aesthetic function if the thermoplastic material of the blade is transparent or translucent, or may have both these functions.
- inserts may take the form of metal sheets or foils or sheets of plastics, or the like.
- the inserts are inserted in the blade for aesthetic reasons, they may be variously decorated with designs and/or lettering, which may also have an advertizing function.
- Another object of the present invention is a fin with a blade containing the said laminar inserts within itself.
- reference 1 denotes the blade of a diving fin, preferably made of a thermoplastic, whose central region 2 is formed of a composite insert, as can be seen more clearly in Figure 4 of the drawings.
- the insert 2 comprises a lower plate 102 of a thermoplastic identical to or compatible with the material of the blade 1, a sheet 202 that may be of any material suitable for the purpose for which it is being inserted into the fin, e.g. metal or plastic or the like, and an upper plate 302 of a thermoplastic that is compatible with the material of the fin.
- the sheet 202 can be inserted stably between the two plates 102 and 302 by different processes, such as by being incorporated by overmoulding the upper plate 302 onto the lower plate 102, or the two plates 102, 302 may be welded together by ultrasound, by high frequency or by heat, for example by means of a hot plate. If the sheet 202 is to include an aesthetic function, the upper plate 302 and optionally also the lower part 202 will obviously be made of a transparent or translucent material.
- the sandwich constituting the resulting insert 2 will be incorporated in the central part of the blade 1 e.g. by overmoulding, the insert 2 being positioned for example inside the fin blade mould and overmoulding the blade around it.
- the laminar insert may be inserted into the fin mould so as to be overmoulded by the material of the fin.
- the laminar insert may be inserted into the fin mould so as to be overmoulded by the material of the fin.
- it will be necessary to provide parts capable of holding the insert in position during the overmoulding process, to prevent the insert moving.
- These holding parts will give rise to regions that are completely immersed in the plastic and others that are visible, so that besides the optional structural fin-reinforcing effect, the said visible regions will give a distinctive aesthetic and decorative effect to the blade.
- FIG. 2 Shown in Figure 2 is a cross section taken on the plane marked II-II in Figure 1, with the central region of the blade identified. This identified region is shown on an enlarged scale in Figure 3. In this figure the sheet 202 incorporated between the upper 302 and lower 102 plates can be observed clearly.
Abstract
Description
Claims (11)
- Method of reinforcing and/or decorating the blades of diving fins, characterized in that it comprises the insertion into the thermoplastic forming the fin blade of laminar inserts of materials having mechanical and/or chromatic and decorative characteristics differing from those of the material of the blade itself.
- Method according to Claim 1, characterized in that this insertion takes place during the moulding of the fin blade, by incorporation of these inserts into the mass of material forming the said blade.
- Method according to Claim 1, in which these inserts comprise a base plate of a thermoplastic compatible with the material of the fin blade, to which the laminar insert of heterogeneous material is applied, the whole then being covered by a second plate of material compatible with the material of the fin blade, and the resulting composite part being inserted into the fin blade mould in such a way as to incorporate it into and weld it to the mass of material forming the blade in the moulding process.
- Method according to Claim 1, in which these laminar inserts are positioned inside the fin blade mould, the blade being overmoulded around the said inserts.
- Method according to Claim 4, whereby the mould has parts capable of holding the said inserts in position during the overmoulding stage.
- Method according to Claim 1, in which the said insert is overmoulded onto only one face in a half blade inside a mould, the said insert, thus partially overmoulded, then being covered with a second moulding that completes the blade.
- Method according to any one of the preceding claims, in which this laminar insert is a metal sheet.
- Method according to any one of the preceding claims, in which this laminar insert is a plastic sheet.
- Method according to Claim 7 or 8, in which this sheet is provided on one or both of its surfaces with decorative and/or advertizing elements.
- Method according to Claim 9, characterized in that the decorated surface of this sheet is covered with a transparent or translucent plastic.
- Diving fin with a blade containing a reinforcing and/or decorative laminar insert made by the method according to any one of the preceding Claims 1 to 10.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITGE20040032 | 2004-04-28 | ||
ITGE20040032 ITGE20040032A1 (en) | 2004-04-28 | 2004-04-28 | METHOD FOR REINFORCEMENT OF FINS FOR SWIMMING, AND FINS SO OBTAINED. |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1591145A1 true EP1591145A1 (en) | 2005-11-02 |
Family
ID=34929994
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04106290A Withdrawn EP1591145A1 (en) | 2004-04-28 | 2004-12-03 | Method of reinforcing the blades of diving fins, and fins produced in this way |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1591145A1 (en) |
IT (1) | ITGE20040032A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8641464B2 (en) | 2010-04-08 | 2014-02-04 | Cetatek Holdings Inc. | Flippers, boots, systems including same, and methods of using same |
US9440114B2 (en) | 2012-10-12 | 2016-09-13 | Cetatek Holdings Inc. | Boot sole system and fin for same |
WO2019053751A1 (en) * | 2017-09-13 | 2019-03-21 | Alemanni Sub Di Alemanni Itio E C. S.A.S. | Fin for underwater swimming |
US10675508B2 (en) | 2010-04-08 | 2020-06-09 | Cetatek Holdings Inc. | Coupleable fin apparatuses and boot toe bodies |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
US5304081A (en) * | 1992-02-14 | 1994-04-19 | Tabata Co. Ltd. | Swim fin |
EP0640361A1 (en) * | 1993-07-28 | 1995-03-01 | TECHNISUB S.p.A. | Swimming flipper and method for its manufacture |
US20010054241A1 (en) * | 2000-04-26 | 2001-12-27 | Lewis-Aburn Matthew James | Method of manufacturing a moulded article and a product of the method |
-
2004
- 2004-04-28 IT ITGE20040032 patent/ITGE20040032A1/en unknown
- 2004-12-03 EP EP04106290A patent/EP1591145A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
US5304081A (en) * | 1992-02-14 | 1994-04-19 | Tabata Co. Ltd. | Swim fin |
EP0640361A1 (en) * | 1993-07-28 | 1995-03-01 | TECHNISUB S.p.A. | Swimming flipper and method for its manufacture |
US20010054241A1 (en) * | 2000-04-26 | 2001-12-27 | Lewis-Aburn Matthew James | Method of manufacturing a moulded article and a product of the method |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8641464B2 (en) | 2010-04-08 | 2014-02-04 | Cetatek Holdings Inc. | Flippers, boots, systems including same, and methods of using same |
US9737762B2 (en) | 2010-04-08 | 2017-08-22 | Cetatek Holdings Inc. | Flippers, boots, systems including same, and methods of using same |
US10112079B2 (en) | 2010-04-08 | 2018-10-30 | Cetatek Holdings Inc. | Flippers, boots, systems including same, and methods of using same |
US10675508B2 (en) | 2010-04-08 | 2020-06-09 | Cetatek Holdings Inc. | Coupleable fin apparatuses and boot toe bodies |
US9440114B2 (en) | 2012-10-12 | 2016-09-13 | Cetatek Holdings Inc. | Boot sole system and fin for same |
WO2019053751A1 (en) * | 2017-09-13 | 2019-03-21 | Alemanni Sub Di Alemanni Itio E C. S.A.S. | Fin for underwater swimming |
Also Published As
Publication number | Publication date |
---|---|
ITGE20040032A1 (en) | 2004-07-28 |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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AX | Request for extension of the european patent |
Extension state: AL BA HR LV MK YU |
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: MARES S.P.A. |
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AKX | Designation fees paid | ||
REG | Reference to a national code |
Ref country code: DE Ref legal event code: 8566 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20060503 |