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 PDF

Info

Publication number
EP1591145A1
EP1591145A1 EP20040106290 EP04106290A EP1591145A1 EP 1591145 A1 EP1591145 A1 EP 1591145A1 EP 20040106290 EP20040106290 EP 20040106290 EP 04106290 A EP04106290 A EP 04106290A EP 1591145 A1 EP1591145 A1 EP 1591145A1
Authority
EP
European Patent Office
Prior art keywords
blade
material
inserts
method according
fin
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Withdrawn
Application number
EP20040106290
Other languages
German (de)
French (fr)
Inventor
Gian Paolo Vaccaro
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.)
MARES SpA
Original Assignee
MARES SpA
HTM Sport SpA
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 ITGE20040032 priority Critical
Priority to ITGE20040032 priority patent/ITGE20040032A1/en
Application filed by MARES SpA, HTM Sport SpA filed Critical MARES SpA
Publication of EP1591145A1 publication Critical patent/EP1591145A1/en
Application status is Withdrawn legal-status Critical

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B31/00Swimming aids
    • A63B31/08Swim fins, flippers or other swimming aids held by, or attachable to, the hands, arms, feet or legs
    • A63B31/10Swim 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
    • A63B31/11Swim 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

Abstract

Method of reinforcing and/or decorating the blades of diving fins comprising the the steps of 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. This insertion Lakes place during the moulding of the fin blade, by incorporation of these inserts into the mass of material forming the said blade. The said 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. Advantageously, the said laminar inserts are positioned inside the fin blade mould, the blade being overmoulded around the said inserts.

Description

  • 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.
  • These inserts may take the form of metal sheets or foils or sheets of plastics, or the like.
  • If 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.
  • Other objects and advantages of the present invention will become clearer in the course of the following detailed description of certain embodiments of the invention, presented with reference to the appended drawings, in which:
  • Figure 1 is a view of a blade of a diving fin having in its central region an insert according to the present invention;
  • Figure 2 is a cross section through the fin of Figure 1, on the plane marked II-II in Figure 1;
  • Figure 3 is a detail on a larger scale of the section through the central region of the fin of Figures 1 and 2;
  • Figure 4 is a disassembled view illustrating the different stages of a preferred alternative embodiment of the method according to the invention for inserting an insert into the blade of a fin, and
  • Figure 5 illustrates a second embodiment of the method according to the invention.
  • Referring to the drawings, and with initial reference to Figures 1 to 4 thereof, 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. With reference to this figure, 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.
  • To proceed in a different way, it is possible to overmould the insert 2 into a half-plate made of a plastic compatible with the material of the blade, cover it with a second moulding, optionally with a different colour in order to obtain a contrasting chromatic effect, and at this point insert the sandwich into the blade mould and incorporate it therein.
  • Alternatively, as illustrated in Figure 5, it is possible to overmould the insert 2 onto only one face in a half blade 101 and cover it with a second moulding 201 that completes the blade, so that the insert will be completely incorporated within the finished blade.
  • In accordance with another alternative of the method according to the invention, the laminar insert may be inserted into the fin mould so as to be overmoulded by the material of the fin. For this operation 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.
  • 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.
  • The present invention is not of course limited to the embodiments illustrated and described, but rather includes all variants and modifications as come within the more general scope of the inventive concept, essentially as claimed below.

Claims (11)

  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. Method according to Claim 4, whereby the mould has parts capable of holding the said inserts in position during the overmoulding stage.
  6. 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.
  7. Method according to any one of the preceding claims, in which this laminar insert is a metal sheet.
  8. Method according to any one of the preceding claims, in which this laminar insert is a plastic sheet.
  9. 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.
  10. Method according to Claim 9, characterized in that the decorated surface of this sheet is covered with a transparent or translucent plastic.
  11. 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.
EP20040106290 2004-04-28 2004-12-03 Method of reinforcing the blades of diving fins, and fins produced in this way Withdrawn EP1591145A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ITGE20040032 2004-04-28
ITGE20040032 ITGE20040032A1 (en) 2004-04-28 2004-04-28 Method for the reinforcement of the blades of swim fins, 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
EP20040106290 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 (3)

* Cited by examiner, † Cited by third party
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

Citations (4)

* Cited by examiner, † Cited by third party
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
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 (5)

* Cited by examiner, † Cited by third party
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
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

Similar Documents

Publication Publication Date Title
CA1168410A (en) Process for preparing injection moulded plastic objects with embedded decorative and/or descriptive prints
CN1224868C (en) Decoration plate and its mfg. method, articles and time-pieces therewith
DE10339842B4 (en) Method of making buttons, ornamental and instrument panels with fine symbolism and a button made by the method
CN100493927C (en) Partially structured multilayered film whose form can be decorated
JP5390606B2 (en) Decorative parts made by fitting
EP1567314B2 (en) Toothbrush bodies
TW512067B (en) Method of manufacturing an intracutaneous microneedle array
US20050217686A1 (en) Method for manufacturing artificial nail
EP1415897A3 (en) Cross member and manufacturing method thereof
BRPI0400260A (en) laser sintering powder with PMMI, PMMA and / or PMMI-PMMA copolymers, process for their preparation and molding bodies prepared from these laser sintering powders
US4737225A (en) Method of making a substrateless decorative article
DE60214954T2 (en) Method for producing a plurality of automobile trim pieces
US20110210026A1 (en) Shell for electronic device and method of forming the same
DE10339930B4 (en) Production process for metal jewelry panels
WO2001096079A3 (en) Molded articles having a surface bearing a lenticular image
US4275518A (en) Decorative plate and method of making same
BRPI0509151A (en) intermediate fastener
BR0211326B8 (en) Method for making laminated materials having mechanically engraved decorative motifs and surface textures coinciding with the decorative motifs.
WO2004082926A3 (en) Method for insert molding decorative films
US7033533B2 (en) Method of manufacturing a moulded article and a product of the method
US4889748A (en) Display device
CA2569644A1 (en) Method for preparing a water-soluble container with two compartments
US4012053A (en) Splash guard
US6506465B1 (en) Decorative toppers
DK1184474T3 (en) Process for the production of very thin strips in aluminum-iron alloy

Legal Events

Date Code Title Description
AX Extension or validation of the european patent to

Countries concerned: ALBAHRLVMKYU

AK Designated contracting states:

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

RAP1 Transfer of rights of an ep application

Owner name: MARES S.P.A.

AKX Payment of designation fees
REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

18D Deemed to be withdrawn

Effective date: 20060503