Crossbow

• US 10,145,640 B2
• Filed: 12/28/2016
• Issued: 12/04/2018
• Est. Priority Date: 12/31/2015
• Status: Active Grant

• Current Assignee: Aleksei Mossudovich Rassulov
• Original Assignee: Aleksei Mossudovich Rassulov
• Inventors: Rassulov, Aleksei Mossudovich
• Primary Examiner(s): RICCI, JOHN A
• Application Number:
  US15/564,958
• Publication Number:
  US 20180209759A1
• Time in Patent Office: 706 Days
• CPC Class Codes: F41B 5/12 Crossbows

Abstract

The invention relates to the field of sports weapons. The crossbow comprises a bow with a bow string, a shoulder stock and a tubular stock which connects said bow and shoulder stock and has two diametrically arranged longitudinal helical grooves, the helical grooves in the stock are of through design, and the bow string is passed through the helical grooves, wherein the helical grooves have a length of not less than the value of the bow string tensioning motion. Furthermore, an arrow to be launched is arranged inside the stock and is brought into engagement with the bow string such that an axial force and a rotational moment can be transmitted to one of the structural elements: by means of an annular slide with two radial openings which are open therein, are diametrically arranged and through which the bow string is passed, inside a tube inserted into said openings, or without a slide, only with the aid of a tube which is slipped onto the bow string, for which supports are formed on the bow string, or directly from the bow string, without a slide and without a tube. A simplification of the design, a reduction in the weight and necessary power of the crossbow, and an increase in the stabilization of an arrow during flight are achieved.

Claims

1. A crossbow comprising:

a bow (1);

a bow string (2) characterized at least with a tensed position corresponding to a predetermined displacement of a central portion of said bow string (2);

a shoulder stock (3);

a tubular stock (4) coupled with said bow (1), said bow string (2), and said shoulder stock (3);

wherein said tubular stock (4) defines a longitudinal axis and walls;

said tubular stock (4) includes two diametrically opposed longitudinal helical grooves (5) cut through the walls;

wherein said helical grooves (5) have a length being at least equal to or exceeding the predetermined displacement;

an arrow (6) arranged inside the tubular stock (4);

said arrow (6) is brought into engagement with the bow string (2);

an annular slide (7) having two radial openings (8) arranged therein diametrically opposed to each other; and

a tubular part (9) inserted into said openings (8), whereas the bow string (2) is passed inside said tubular part (9) that passes through the helical grooves (5);

wherein an axial force and a rotational moment caused by the bow string (2) being in the tensed position relative to the longitudinal axis are transmitted to the arrow (6) by means of said annular slide (7) and said tubular part (9).

2. The crossbow according to claim 1, wherein:

the bow string (2) is further characterized with a loose position;

and wherein;

the tubular stock (4) is coupled with the shoulder stock (3) and the bow (1) in such a way that a projection of the bow string (2) being in the loose position on a plane perpendicular to the longitudinal axis is a straight line, and a projection of the bow string (2) being in the tensed position on said plane is an S-shaped line.

3. The crossbow according to claim 1 wherein:

the bow string (2) is further characterized with a loose position;

and wherein;

the tubular stock (4) is coupled with the shoulder stock (3) and the bow (1) in such a way that a projection of the bow string (2) being in the loose position on a plane perpendicular to the longitudinal axis is an S-shaped line, and a projection of the bow string (2) being in the tensed position on said plane is a straight line.

4. A crossbow comprising:

a bow (1);

a bow string (2) characterized at least with a tensed position corresponding to a predetermined displacement of a central portion of said bow string (2);

a shoulder stock (3);

a tubular stock (4) coupled with said bow (1), said bow string (2), and said shoulder stock (3);

wherein said tubular stock (4) defines a longitudinal axis and walls, said tubular stock (4) includes two diametrically opposed longitudinal helical grooves (5) cut through the walls;

wherein said helical grooves (5) have a length being at least equal to or exceeding the predetermined displacement;

an arrow (6) arranged inside the tubular stock (4);

said arrow (6) is brought into engagement with the bow string (2);

a tubular part (9) slipped onto the bow string (2), with the aid of supports formed of said bow string (2);

wherein an axial force and a rotational moment caused by the bow string (2) being in the tensed position relative to the longitudinal axis are transmitted to the arrow (6) by means of said tubular part (9).

5. The crossbow according to claim 4, wherein:

the bow string (2) is further characterized with a loose position; and

wherein;

the tubular stock (4) is coupled with the shoulder stock (3) and the bow (1) in such a way that a projection of the bow string (2) being in the loose position on a plane perpendicular to the longitudinal axis is a straight line, and a projection of the bow string (2) being in the tensed position on said plane is an S-shaped line.

6. The crossbow according to claim 4, wherein:

the bow string (2) is further characterized with a loose position; and

wherein;

the tubular stock (4) is coupled with the shoulder stock (3) and the bow (1) in such a way that a projection of the bow string (2) being in the loose position on a plane perpendicular to the longitudinal axis is an S-shaped line, and a projection of the bow string (2) being in the tensed position on said plane is a straight line.

7. A crossbow comprising:

a bow (1);

a bow string (2) characterized at least with a tensed position corresponding to a predetermined displacement of a central portion of said bow string (2);

a shoulder stock (3);

a tubular stock (4) coupled with said bow (1), said bow string (2), and said shoulder stock (3);

wherein said tubular stock (4) defines a longitudinal axis and walls, said tubular stock (4) includes two diametrically opposed longitudinal helical grooves (5) cut through the walls;

wherein said helical grooves (5) have a length being at least equal to or exceeding the predetermined displacement;

an arrow (6) arranged inside the tubular stock (4);

said arrow (6) is brought into engagement with the bow string (2);

wherein an axial force and a rotational moment caused by the bow string (2) being in the tensed position are directly transmitted to the arrow (6).

8. The crossbow according to claim 7, wherein:

the bow string (2) is further characterized with a loose position; and

wherein;

the tubular stock (4) is coupled with the shoulder stock (3) and the bow (1) in such a way that a projection of the bow string (2) being in the loose position on a plane perpendicular to the longitudinal axis is a straight line, and a projection of the bow string (2) being in the tensed position on said plane is an S-shaped line.

9. The crossbow according to claim 7, wherein:

the bow string (2) is further characterized with a loose position; and

wherein;

the tubular stock (4) is coupled with the shoulder stock (3) and the bow (1) in such a way that a projection of the bow string (2) being in the loose position on a plane perpendicular to the longitudinal axis is an S-shaped line, and a projection of the bow string (2) being in the tensed position on said plane is a straight line.