WO1998018400A1 - Javelot d'entrainement - Google Patents

Javelot d'entrainement Download PDF

Info

Publication number
WO1998018400A1
WO1998018400A1 PCT/US1997/020295 US9720295W WO9818400A1 WO 1998018400 A1 WO1998018400 A1 WO 1998018400A1 US 9720295 W US9720295 W US 9720295W WO 9818400 A1 WO9818400 A1 WO 9818400A1
Authority
WO
WIPO (PCT)
Prior art keywords
javelin
training
training javelin
component
components
Prior art date
Application number
PCT/US1997/020295
Other languages
English (en)
Inventor
Thomas Alan Petranoff
Original Assignee
Thomas Alan Petranoff
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
Application filed by Thomas Alan Petranoff filed Critical Thomas Alan Petranoff
Priority to AU51721/98A priority Critical patent/AU5172198A/en
Priority to JP10520824A priority patent/JP2000510025A/ja
Publication of WO1998018400A1 publication Critical patent/WO1998018400A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B65/00—Implements for throwing  ; Mechanical projectors, e.g. using spring force
    • A63B65/02—Spears or the like ; Javelins
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
    • A63B71/06—Indicating or scoring devices for games or players, or for other sports activities
    • A63B71/0619—Displays, user interfaces and indicating devices, specially adapted for sport equipment, e.g. display mounted on treadmills
    • A63B71/0622—Visual, audio or audio-visual systems for entertaining, instructing or motivating the user
    • A63B2071/0625—Emitting sound, noise or music
    • 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
    • A63B2225/74—Miscellaneous features of sport apparatus, devices or equipment with powered illuminating means, e.g. lights
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B69/00—Training appliances or apparatus for special sports

Definitions

  • This invention lies in the field of javelins, that is javelins which are used in sporting events and relates in particular to a training javelin useful in the training of javelin throwing, particularly in regard to juvenile trainees
  • the present invention relates to the structural design and to the methods of manufacture of training javelins of this general kind
  • the manufacturing techniques used in the manufacture of the javelin have resulted in restraints on production volumes These techniques have included the use of low pressure injection moulding techniques and an integral construction which have, for example been used up until now to mould the javelins
  • the low pressure injection moulding technique results in a low rate of manufacture of javelins as well as there being a high rate of rejection of javelins so manufactured due to, inter a a misalignment of the moulds, trapped air bubbles in the final product and so on
  • a training javelin structure which includes a nose component a shaft component and a tail component which are connectable together to form the training javelin structure
  • the components mav have mechanical interlocking formations to permit interconnection of the nose and shaft components and the shaft and tail components
  • the mechanical interlocking formations are in the form of a screw threaded male portion matingfv engaging a complementary female portion
  • the components mav be connectable together bv the application of a bonding agent
  • the nose component of the training javelin structure mav have a hollow space within the nose component Typically the hollow space is of conical shape tapering towards a free end of the nose component
  • the hollow space included in the nose component improves the elastome ⁇ c compressibility of the nose thereby resulting in both a safer training javelin and a longer lasting javelin with the nose now being more resistant to breakage on impact with the ground after having been thrown
  • the tail component may include a generally elongate bodv and fins which are arranged spirallv along at least a part of the length of the bodv to induce rotational movement of the javelin structure in flight
  • the spiral angle is in the range of 1 ° to 1 °
  • the spiral angle is 3°
  • the fins mav be removably attachable to the bodv
  • Typicallv the generally elongate bodv is provided with grooves for receiving complementarv formations on the fins
  • the fins mav be bonded to the body bv means of a suitable bonding agent such as a contact adhesive or plastic cement Likewise the fins mav be welded to the bodv 0
  • the training javelin structure mav include at least one whistle on any component wherebv a whistling sound is produced bv the flight of the javelin
  • the shaft component may have a hand grip formation
  • the shaft component mav ⁇ include a light source for example a globe
  • the light source mav be solar pow ered or it mav be powered bv means of batteries included in the shaft component of the javelin
  • the light source and batteries are preferably accommodated in a substantial shock- proof compartment in the shaft component to prevent damage to the light source and/or batteries upon impact of the training javelin with the ground 0
  • the shaft component may include a translucent (or transparent) area through which the light source may be viewed
  • the weight balance of the assembled training javelin preferably is selected by attention to the relative weights of the component parts which have been described.
  • the training javelin structure components may be of a suitable synthetics plastics material.
  • the invention extends to a method of production of a training javelin as described above, including the steps of high speed high pressure injection moulding of each of the components and assembling the components by hand or robotic means.
  • the method may include adding decorative and/or proprietary decals and/or logos subsequently or before assembly to the components.
  • the javelin may be decorated with paint which may be applied before or during manufacture, i.e. before use, or the javelin may be individually decorated with paint by a user thereof
  • the javelin may be supplied in kit form, the kit including the javelin (either in component form or pre-assembled) as well as paint and/or decals for individual decoration of the javelin by a user thereof.
  • Colour may also be included in the polymer formulation used for moulding.
  • Figure 1 is an isometric projection of the training javelin
  • Figure 2 is an elevation of the shaft component of the training javelin
  • Figure 3 is a cross-sectional elevation of the shaft component
  • Figure 4 is an elevation of the nose component of the training javelin
  • Figure 5 is a cross-sectional elevation of the nose component
  • Figure 6 is an elevation of the tail component
  • Figure 7 is a cross-sectional elevation of the tail component
  • Fi ure 8 is an elevation of one of the three tail fins.
  • the tail component 10 is connected to the shaft component 1 1 which is connected to the nose component 12
  • Three fins 13, 14 and 15 are locked in grooves 16 in the tail component
  • Each fin has integrally at its base a strip 17 which is slid into the matching groove in the tail component
  • the grooves are aligned with the longitudinal centre line of the javelin, the fins are inclined on the strips at 3° to the longitudinal centre line This gives optimal rotation of the javelin during flight
  • the shaft component includes on one end.
  • the shaft component 1 1 further includes on a second end thereof internal screw threads at 20 which can screw onto external screw threads at 21 on the tail component (see Figures 6 and 7)
  • a hand grip 22 is provided on the shaft component, and the shaft tapers to a narrow er size near the nose
  • the nose 12 has a hollow space 23 in it which tapers to a narrow er size near the end 24
  • the formation 25 which receives the formations 18. 19 on the shaft component are shown in Figures 2. 3 and 5
  • FIGS 6 and 7 show the tail component 10 with external threads 21 and grooves 16 (one is seen) for the fins
  • Figure 8 show s one of the three fins 13. 14 and 1 5
  • the fins include whistles located therein A prong 26 and a catch 27 anchor the fin in the groove 16. in each case

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Toys (AREA)

Abstract

L'invention concerne une structure de javelot d'entraînement, laquelle présente un élément nez (12), un élément axe (11) ainsi qu'un élément queue (10). Ces éléments présentent des formations d'emboîtement mécanique (19, 25), comme un assemblage à manchons, permettant de les relier entre eux, et ils sont réalisés dans une matière plastique synthétique et élastique.
PCT/US1997/020295 1996-10-31 1997-10-31 Javelot d'entrainement WO1998018400A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU51721/98A AU5172198A (en) 1996-10-31 1997-10-31 A training javelin
JP10520824A JP2000510025A (ja) 1996-10-31 1997-10-31 練習用槍

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA96/4177 1996-10-31
ZA964177 1996-10-31

Publications (1)

Publication Number Publication Date
WO1998018400A1 true WO1998018400A1 (fr) 1998-05-07

Family

ID=25585701

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1997/020295 WO1998018400A1 (fr) 1996-10-31 1997-10-31 Javelot d'entrainement

Country Status (3)

Country Link
JP (1) JP2000510025A (fr)
AU (1) AU5172198A (fr)
WO (1) WO1998018400A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19905580C1 (de) * 1999-02-11 2000-06-15 Hilmer Gabcke Ute Speer
GB2459153A (en) * 2008-04-17 2009-10-21 Ian Patterson Practice Javelin
EP3148660A4 (fr) * 2014-04-04 2017-10-04 KMA Concepts Limited Projectile à manche doté d'une tête

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2196610A (en) * 1939-02-14 1940-04-09 Karl A Schlademan Javelin
US3746334A (en) * 1971-09-03 1973-07-17 J Stubblefield Practice javelin
US4204307A (en) * 1978-06-26 1980-05-27 Pfetzing Rodger E Arrow fletching method
US4333643A (en) * 1980-02-19 1982-06-08 Victor Saffire Javelin
US4457514A (en) * 1982-09-30 1984-07-03 Paxman Colin J Darts
US5267735A (en) * 1992-10-05 1993-12-07 Bushman Earl K Javelin
US5443273A (en) * 1993-10-29 1995-08-22 Lovorn; Joseph W. Method for attaching fletch on arrow and device for practicing the same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2196610A (en) * 1939-02-14 1940-04-09 Karl A Schlademan Javelin
US3746334A (en) * 1971-09-03 1973-07-17 J Stubblefield Practice javelin
US4204307A (en) * 1978-06-26 1980-05-27 Pfetzing Rodger E Arrow fletching method
US4333643A (en) * 1980-02-19 1982-06-08 Victor Saffire Javelin
US4457514A (en) * 1982-09-30 1984-07-03 Paxman Colin J Darts
US5267735A (en) * 1992-10-05 1993-12-07 Bushman Earl K Javelin
US5443273A (en) * 1993-10-29 1995-08-22 Lovorn; Joseph W. Method for attaching fletch on arrow and device for practicing the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19905580C1 (de) * 1999-02-11 2000-06-15 Hilmer Gabcke Ute Speer
WO2000047292A1 (fr) * 1999-02-11 2000-08-17 Hilmer Gabcke Ute Javelot
US6585623B1 (en) 1999-02-11 2003-07-01 Ute Hilmer-Gabcke Javelin
GB2459153A (en) * 2008-04-17 2009-10-21 Ian Patterson Practice Javelin
EP3148660A4 (fr) * 2014-04-04 2017-10-04 KMA Concepts Limited Projectile à manche doté d'une tête

Also Published As

Publication number Publication date
AU5172198A (en) 1998-05-22
JP2000510025A (ja) 2000-08-08

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