DE102004034730B4 - compound bow - Google Patents

compound bow

Info

Publication number
DE102004034730B4
DE102004034730B4 DE200410034730 DE102004034730A DE102004034730B4 DE 102004034730 B4 DE102004034730 B4 DE 102004034730B4 DE 200410034730 DE200410034730 DE 200410034730 DE 102004034730 A DE102004034730 A DE 102004034730A DE 102004034730 B4 DE102004034730 B4 DE 102004034730B4
Authority
DE
Germany
Prior art keywords
bow
arrow
compound bow
chord
return
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.)
Expired - Fee Related
Application number
DE200410034730
Other languages
German (de)
Other versions
DE102004034730A1 (en
Inventor
Niels Kirchhoff
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.)
KIRCHHOFF, NIELS, 23562 LUEBECK, DE
Original Assignee
Niels Kirchhoff
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 Niels Kirchhoff filed Critical Niels Kirchhoff
Priority to DE200410034730 priority Critical patent/DE102004034730B4/en
Publication of DE102004034730A1 publication Critical patent/DE102004034730A1/en
Application granted granted Critical
Publication of DE102004034730B4 publication Critical patent/DE102004034730B4/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41BWEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
    • F41B5/00Bows; Crossbows
    • F41B5/0094Non-traditional bows, e.g. having hinged limbs or non-stave geometry
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41BWEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
    • F41B5/00Bows; Crossbows
    • F41B5/10Compound bows
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41BWEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
    • F41B5/00Bows; Crossbows
    • F41B5/14Details of bows; Accessories for arc shooting
    • F41B5/1403Details of bows
    • F41B5/143Arrow rests or guides

Abstract

Compound bow with a handle part, two rigid Auslegarmen and a chord, wherein at the handle part facing the ends of the Auslegarme each have a return drum is provided, which stretch the chord on pulleys, characterized in that
the return drums store the string on a translation wheel in an external notch, and
the translation wheel is biased by coil springs.

Description

  • The invention relates to a compound bow. In addition to the long bow and the Recurve bow, which is characterized by opposite to the arch curvature bent forward end portions of the arms, is a compound bow, for example, in the U.S. Patent 3,486,495 is characterized by a flaschenzugähnliches system that achieves a reduction in pull of 50% when extracting the guided over pulleys tendon.
  • Next are the U.S. Patent 4,903,677 to call, in which a compound bow with two facing the handle part ends of the cantilever arms arranged return drums is already disclosed, which stretch the tendon on a pulley and German Patent 1957 in which a crossbow is already described, which is the leadership of the projectile caused by magnetic adhesion.
  • modern compound bows have an initial energy of up to 140 joules and reach arrow speeds from up to 450 km / h. The middle part of a compound bow is usually fixed made of a hard material such as aluminum or magnesium or else milled from carbon composite material and only the limbs acting as spring elements are flexible executed.
  • One The main advantage of Compoundbogen is that at comparatively large force can be maintained with low energy of the full extension. this makes possible a calmer aiming.
  • One Disadvantage, however, that by the multiple-tensioned cable the Providing a cable deflector is necessary to get the cables out to keep the trajectory of the arrow. The cable deflector, however, will Apply torque (torque) to the limbs. By the company C. P. Oneida Eagle Bows is already a compound bow known, at each limb by its own pulley the middle of the bow is kept clear of the cables.
  • When Arrow rests in the middle of the handle part are in particular Stainless steel pins proposed in a sleeve through a thread in height can be adjusted and thus different arrow diameters are customizable. Provided the tip is made of ferromagnetic material, the arrows become Magnetically stored on these arrowheads, so that the tips no big ones support surfaces have to serve.
  • task the present invention is now to provide a bow at the highest possible Accuracy (avoidance of torque, which spreads on the outrigger arms the arrow becomes precise with application as possible low power can be fired. Next, the bow should be easy to be transported and not by a variety of individual elements of repair or become unwieldy.
  • Further Features and advantages of the invention will become apparent from the following Description of a preferred embodiment with reference to attached Drawing. Showing:
  • 1 the bow according to the invention in a ready-to-fire configuration,
  • 2 the arc of the invention 1 in an exploded view with a separately represented string guide,
  • 3 the removal of the return drum,
  • 4 a height adjustment by adjustable pulleys at the ends of the boom arms,
  • 5 the tendon, essentially protected in the cantilever arms,
  • 6 a folded representation of the sheet according to the invention in transport position,
  • 7 an arrow rest by an electromagnet, and
  • 8th the representation of 7 in partial section showing the arrowhead.
  • The Indian 1 Compound arch shown is characterized by rigid cantilever arms, at the ends of which guide rollers store the tendon, and return drums, which are arranged at the transition between the executed handle part and the convex cantilever arms, and which stretch the tendon and the extract of the tendon necessary for the Pfeilabschuß Provide energy through return train. A stand height adjustment is realized by in the Auslegerarmenden in a slot guide adjustably mounted Umlenklager.
  • 2 Figure 4 shows the string guide in an exploded view again, the pulleys at the ends of the extension arms being disengaged therefrom, as are the return pulleys, which are also shown separately.
  • In the 3 is the structure of the return drums consisting of a spring drum housing, which is mounted in a hinge cup and next to an axis in which carries the spring on the with a lid with a plurality of bolts the other drum block half is arranged, shown. On the axle is the "wheel", the bearing wheel on which the chord is mounted, so the return drums store the chord on a translation wheel in an outer notch, with the translation wheel preloaded with coil springs.
  • In the 4 is the stand height adjustment shown by displacement of the pulleys in a slot on the basis of a detailed representation of the Auslegerarmenden.
  • In a comparison of 5 and 6 Finally, it can be determined how much the arch can be reduced for transport. In both representations, the tendon is protected within the cantilevered arm.
  • In the 7 Finally, a preferred arrow rest, the means of a built-in handle part of the arc battery and advantageously electromagnets the arrow floating holds without touching the arrow rest in this hole in the handle part. In this case, the (electric) magnets are arranged in an annular manner around the arrow opening formed in the grip part, in which the arrowhead rests centrally in front of the shot as intended.
  • The Materials that are used consist of one with plastic sheathed fastflight fabric for the tendon, which has small metal pins at its end, the pierce the tissue and for the storage of the tendon in the holes of the translation wheel in the return drum serve.
  • Over a Variety of locating pins are the drums in the handle part attached. The case of the Spring drums consists of unbreakable fiber plastic and the joint cups are made of aluminum or titanium. The same applies to the translation wheels.
  • Different as with previously known bows, where the cantilever arms act as springs, the force of the Bow exclusively pulled out of the tension of the two coil spring and the translation the diameter of the translation wheel. Correspondingly strong springs are known in the market. Next can also find a rolling elastic band use. Also a realization with ring springs is possible.
  • By the rigid limbs becomes the hand shock and also the "torque", the twisting eliminated and there is a minimal energy loss during use up of an arrow. As a result, the bow is particularly shake-proof and by the further proposed arrow rest results in another User-friendliness and perfecting of the target accuracy. Also another problem of the compound bow is the risk of breakage at empty shots, because of the high energy stored, if not can be given to an arrow, until now until the break of the bow to lead could, been successfully eliminated.
  • The Hinge function in the field of return drums is by a or multiple fixing pins achieved by appropriate pressure from the outside solved her fixation recording can be whereupon the bow can be folded. When unfolding the tendon is already stretched to a part.
  • There modern bows already over External laser aiming devices have the distance to the target to be able to determine exactly (as in holding against the gravity of the earth is still essential more important than guns) is already in some arcs one Power source integrated, but usually a very small, for example to supply a laser pointer.
  • Of the bow according to the invention now offers room for an integrated power source with batteries. These can now be used further be, over electromagnets a corresponding electrically conductive winding at the arrowhead magnetic to hold in the balance so that the arrow is exactly centered in the Arrow mount non-contact is held.
  • By The realized torsion-free bow can be inserted for the first time realize such a concept and an arrow without one-sided influence When writing the bow shoot straight forward. at previous bows was a certain compression of the arrow uriell, which thereby, that the Arrow on one side on an arrow rest and friction with you had, affected the trajectory.
  • At the bow according to the invention however, it is possible a non-contact To realize storage for Right and left handed equally is usable and offers the advantage that arrows different Diameter without readjusting the arrow rest, as before was necessary, can be fired alternately.

Claims (2)

  1. Compound bow with a handle, two stiff Auslegarmen and a chord, wherein at the handle part facing the ends of the Auslegarme each have a return drum is provided, which stretch the chord on pulleys, characterized in that the return drums on a Überset the string Store the sprocket in an outer notch, and the translation wheel is preloaded with coil springs.
  2. Compound bow according to claim 1, characterized by adjustably mounted in the ends of the cantilever arms in a slot guide, a stand height adjustment forming Umlenklager.
DE200410034730 2004-07-17 2004-07-17 compound bow Expired - Fee Related DE102004034730B4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE200410034730 DE102004034730B4 (en) 2004-07-17 2004-07-17 compound bow

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200410034730 DE102004034730B4 (en) 2004-07-17 2004-07-17 compound bow

Publications (2)

Publication Number Publication Date
DE102004034730A1 DE102004034730A1 (en) 2006-02-16
DE102004034730B4 true DE102004034730B4 (en) 2009-03-05

Family

ID=35668429

Family Applications (1)

Application Number Title Priority Date Filing Date
DE200410034730 Expired - Fee Related DE102004034730B4 (en) 2004-07-17 2004-07-17 compound bow

Country Status (1)

Country Link
DE (1) DE102004034730B4 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3003025B1 (en) 2013-03-06 2018-01-12 Gennady Novikov Spiral elastic element for jet device
CN103353257B (en) * 2013-07-16 2015-12-09 黄刚 Folding laminated bow
CN108168367B (en) * 2017-12-26 2020-05-15 王星昊 Folding type tension-adjustable reverse bending bow

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1037923B (en) * 1957-04-23 1958-08-28 Dr Med H C Heinrich Franke Dr crossbow
US3486495A (en) * 1966-06-23 1969-12-30 Holless W Allen Archery bow with draw force multiplying attachments
US4903677A (en) * 1988-11-02 1990-02-27 Colley David E Power spring bow

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1037923B (en) * 1957-04-23 1958-08-28 Dr Med H C Heinrich Franke Dr crossbow
US3486495A (en) * 1966-06-23 1969-12-30 Holless W Allen Archery bow with draw force multiplying attachments
US4903677A (en) * 1988-11-02 1990-02-27 Colley David E Power spring bow

Also Published As

Publication number Publication date
DE102004034730A1 (en) 2006-02-16

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8327 Change in the person/name/address of the patent owner

Owner name: KIRCHHOFF, NIELS, 23562 LUEBECK, DE

8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee
R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee

Effective date: 20110201