EP0902249A2 - Flêchette - Google Patents

Flêchette Download PDF

Info

Publication number
EP0902249A2
EP0902249A2 EP98117094A EP98117094A EP0902249A2 EP 0902249 A2 EP0902249 A2 EP 0902249A2 EP 98117094 A EP98117094 A EP 98117094A EP 98117094 A EP98117094 A EP 98117094A EP 0902249 A2 EP0902249 A2 EP 0902249A2
Authority
EP
European Patent Office
Prior art keywords
dart
shaft
arrow body
thread
arrow
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.)
Granted
Application number
EP98117094A
Other languages
German (de)
English (en)
Other versions
EP0902249A3 (fr
EP0902249B1 (fr
Inventor
Jochen Weissmann
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.)
Weissmann Jochen
Original Assignee
Sunflex Sport Schnellbuegel and Zimmermann GmbH and Co KG
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 Sunflex Sport Schnellbuegel and Zimmermann GmbH and Co KG filed Critical Sunflex Sport Schnellbuegel and Zimmermann GmbH and Co KG
Publication of EP0902249A2 publication Critical patent/EP0902249A2/fr
Publication of EP0902249A3 publication Critical patent/EP0902249A3/fr
Application granted granted Critical
Publication of EP0902249B1 publication Critical patent/EP0902249B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B6/00—Projectiles or missiles specially adapted for projection without use of explosive or combustible propellant charge, e.g. for blow guns, bows or crossbows, hand-held spring or air guns
    • F42B6/003—Darts

Definitions

  • the invention relates to a dart for a dart game, with a Arrowhead and with a central arrow body and with a feathering load-bearing shaft.
  • the dart is usually made up of several parts.
  • a so-called Steel darts like this one B. from GB 2 102 296 A the arrowhead made of steel is interchangeably inserted into an arrow body.
  • a so-called soft dart such as this.
  • an arrow head made of plastic is in the arrow body screwed in.
  • the plastic arrowhead has a plastic thread on the end, and the arrow body (barrel) has an internal thread accordingly.
  • the shaft side with aluminum or plastic shafts in particular are known.
  • the invention has for its object a dart for a dart game to indicate the greatest possible mass with high slenderness, i.e. has as large a weight as possible.
  • the arrow body has an external thread on at least one end in the form of a grub screw for insertion into a corresponding one Cavity of the arrow body at the end facing this a thread-free Approach has the diameter of the inside diameter of the Cavity is adapted to form a press fit.
  • On this external thread is the arrow head with a corresponding internal thread or the shaft with the appropriate internal thread and the feathering screwable.
  • the invention is based on the consideration, not one at a dart To cause weight gain by increasing the length of the arrow body, because due to the regulations the arrow length is limited, but a weight loss to avoid. This can be achieved if on the usually with an internal thread provided cavity on the arrow body is dispensed with. If the arrow body then carries the external thread of the screw connection, then also achieved weight gain.
  • the arrow body or barrel is given additional mass by the external thread fed and thus increased its weight accordingly.
  • the The mass of a barrel with the same diameter can be increased by 15% to 25%.
  • the arrow remains the same Basic length of the arrow body achieved a weight gain of about 2.6 g.
  • the diameter of the barrel can be significantly reduced with the same mass and thus the barrel can be made much thinner or slimmer than before.
  • the increase in mass takes place or the weight balance, preferably by means of an external M3 thread on both Ends of the barrel.
  • the external thread in the form of a corresponding Cavity of the arrow body is pressed-in threaded pin, in particular compared to one piece molded directly on the arrow body or from the Solid material cut out external thread, the advantage achieved that the grub screw if the thread is damaged, can be replaced without that the arrow body becomes unusable. So can with a broken tip or in the case of a broken shaft, the rest of the threaded pin without tools removed from the barrel within seconds and replaced by a new one Set screw to be replaced.
  • the external thread is or the grub screw at the free end with an approach that serves as an insertion aid Mistake.
  • this can be conical, the free end of the Set screw can also be threadless.
  • the external thread is advantageous designed such that it is the shaft to be screwed on or the screw-on tip leads. This is the number of effective threads downsized so that the screwing is accelerated significantly.
  • the invention in particular achieved the advantage that there are no more external threads, so none Notch effects arise. Due to the forces acting on the arrowhead when Falling out of the dart or throwing disc and due to a collision the bottom was often damaged by the external thread on the arrowhead and tended to cancel. The associated disadvantage of time-consuming and by means of a tool to be unscrewed a broken one Thread from the barrel is made by the invention Dart avoided.
  • the throwing or darts arrow is composed of a central arrow body (Barrel) 2 and an arrow head 4 and a feathering or tail unit (Flight) 6 carrying shaft 8.
  • the elongated and cylindrical arrow body 2 has a surface structure 10 on the shell side to improve handling because the dart to stabilize its trajectory during launch in a rotational movement is offset.
  • the arrow body 2 has, in particular a soft dart, both on the arrowhead 4 and on the End 8 facing shaft 8 has an external thread 12 or 14. With a steel dart the external thread 12 can be omitted if the arrowhead is known per se Way in the arrow body 2 is used interchangeably.
  • Fig. 2 shows the dart with the external threads carried by grub screws 15, 16 12 or 14.
  • the arrow body points to the grub screw 15 2 at the end of the arrow head 4 facing a corresponding one Cavity 17 in which the grub screw 15 with a thread-free shoulder 20th is inserted.
  • the threaded pin 16 has a shoulder 22, which of a corresponding cavity 18 of the arrow body 2 is received.
  • the outer diameter of the lugs 20 and 22 are the inner diameter the cavities 17 and 18 adapted.
  • the Arrowhead 4 has a cavity 28 with an internal thread 30.
  • the Shank 8 has a shaft end 32 facing the arrow body 2 (not visible) cavity with a corresponding to the external thread 14 Internal thread.
  • the feathering 6 is in one or more slots 24 of the Shank 8 at its shaft end facing away from the external thread 14. In the case of the threaded connection, the arrowhead is positively secured 4 and / or the shaft 8 achieved.
  • Fig. 3 shows a preferred embodiment of the threaded pins using the example of Set screw 16.
  • Whose arrowhead 4 to be screwed on or the one to be screwed on End 8 facing shaft is designed as an insertion aid.
  • To there the set screw 16 has a shoulder 26 on which the external thread 14 starts slim and then increases in diameter. This is preferably conical trained approach 26 can also be completely or partially thread-free.
  • Fig. 4 shows the dart in the assembled state.
  • Soft darts shown are both arrowhead 4 and the feathering 6 made of plastic, while the shaft 8 made of aluminum, for example consists.
  • the arrow body 2 consists of brass, a nickel / silver or a tungsten / nickel alloy. Such a soft dart is due to the additional external thread 12, 14 in the form of the set screws 15 and 16 a Weight gain over traditional soft darts of the same composition and the same material by 15 to 25%.
  • the barrel 2 can be made high Mass much slimmer compared to a conventional barrel be executed.
  • an M3 external thread 12 or 14, i. H. at a metric external thread 12, 14 with 3mm diameter has an 18g heavy barrel 2 has a diameter of advantageously only 4.6 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Fishing Rods (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Seeds, Soups, And Other Foods (AREA)
  • Walking Sticks, Umbrellas, And Fans (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
EP98117094A 1997-09-13 1998-09-10 Flêchette Expired - Lifetime EP0902249B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19740367A DE19740367C2 (de) 1997-09-13 1997-09-13 Wurfpfeil
DE19740367 1997-09-13
US09/151,519 US6585612B1 (en) 1997-09-13 1998-09-11 Throw dart

Publications (3)

Publication Number Publication Date
EP0902249A2 true EP0902249A2 (fr) 1999-03-17
EP0902249A3 EP0902249A3 (fr) 2000-07-12
EP0902249B1 EP0902249B1 (fr) 2003-06-04

Family

ID=28042948

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98117094A Expired - Lifetime EP0902249B1 (fr) 1997-09-13 1998-09-10 Flêchette

Country Status (5)

Country Link
US (1) US6585612B1 (fr)
EP (1) EP0902249B1 (fr)
AT (1) ATE242470T1 (fr)
DE (2) DE19740367C2 (fr)
ES (1) ES2200247T3 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6758772B1 (en) * 2003-05-29 2004-07-06 Robert Paul Chambers Darts
CN2699954Y (zh) * 2004-05-20 2005-05-18 邵佳沐 一种飞镖器械
US7871344B1 (en) * 2004-10-21 2011-01-18 Steven John Massman Dart
TWM358657U (en) * 2008-12-31 2009-06-11 jia-jing Cai Body of dart
USD1080739S1 (en) * 2022-06-16 2025-06-24 Gravity Brands Limited Dart shaft
NL2034567B1 (en) * 2023-04-13 2024-10-21 Rocket Darts B V A throwing dart and a flight assembly for a throwing dart

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2102296A (en) 1981-07-24 1983-02-02 Benjamin Royal Drake Darts
EP0367558A2 (fr) 1988-11-03 1990-05-09 Ian Smith Javelots

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB510193A (en) * 1938-02-11 1939-07-28 James Smith And Son Redditch L Improved dart
GB717353A (en) * 1952-04-03 1954-10-27 Albert Stanley Kirk Improvements in or relating to darts
US3401938A (en) * 1966-11-02 1968-09-17 Victor Comptometer Corp Arrowhead attaching means
GB1341178A (en) * 1972-05-11 1973-12-19 Thompson G E Dart
GB1486921A (en) * 1975-07-17 1977-09-28 Clarke & Merrifield Ltd Darts and dart flights
GB2009605B (en) * 1977-08-26 1982-10-13 Cohen C Darts
GB2049448A (en) * 1979-03-16 1980-12-31 Williams F L Darts
GB2085740A (en) * 1980-09-04 1982-05-06 Durro Flights Ltd Darts
GB2097685A (en) * 1980-11-03 1982-11-10 Rm Automation Ltd Darts
GB2090753B (en) * 1981-01-12 1984-09-05 Paxman Colin James Darts
US4457514A (en) * 1982-09-30 1984-07-03 Paxman Colin J Darts
US4596393A (en) * 1985-10-21 1986-06-24 Mihkel Orav Anti-bounce-back dart
US4775158A (en) * 1987-01-30 1988-10-04 Bottelsen Walter E Dart with flight lock
US4772029A (en) * 1987-07-30 1988-09-20 Watkins Mark W Collapsible arrow apparatus
US4846481A (en) * 1988-07-22 1989-07-11 Wageman Arthur R String attaching device for arrows
DE4118670A1 (de) * 1990-06-21 1992-01-02 Manfred Loeffler Pfeil fuer ein wurfspiel
DE9015754U1 (de) * 1990-06-21 1991-02-07 LÖFFLER, Manfred Pfeil für ein Wurfspiel
US5498004A (en) * 1991-09-30 1996-03-12 Kulite Tungsten Corporation Game dart
DE4301792C1 (de) * 1993-01-23 1993-11-25 Roland Kuehn Wurfpfeil
US5375850A (en) * 1993-04-22 1994-12-27 Pickett; Michael R. Dart
DE29608368U1 (de) * 1996-05-10 1997-09-11 Cuno Melcher Kg Me-Sportwaffen, 42699 Solingen Dartpfeil
US5967915A (en) * 1998-02-19 1999-10-19 Lu; Kuo-Hui Dart

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2102296A (en) 1981-07-24 1983-02-02 Benjamin Royal Drake Darts
EP0367558A2 (fr) 1988-11-03 1990-05-09 Ian Smith Javelots

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"brockhaus enzyklopaedie", vol. 19, part 5 article "stichwort darts", pages: 146 - 147

Also Published As

Publication number Publication date
DE19740367C2 (de) 1998-12-24
US6585612B1 (en) 2003-07-01
EP0902249A3 (fr) 2000-07-12
DE19740367A1 (de) 1998-03-19
EP0902249B1 (fr) 2003-06-04
ES2200247T3 (es) 2004-03-01
DE59808589D1 (de) 2003-07-10
ATE242470T1 (de) 2003-06-15

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