Reverse crossbow

• US 7,938,108 B2
• Filed: 05/03/2007
• Issued: 05/10/2011
• Est. Priority Date: 04/20/2007
• Status: Expired due to Fees

• Current Assignee: Pavel Vitalievich Ivanov, Sergey Anatolievich Golovatyy, Sergey Olegovich Popov
• Original Assignee: Pavel Vitalievich Ivanov, Sergey Anatolievich Golovatyy, Sergey Olegovich Popov
• Inventors: Golovatyy, Sergey Anatolievich, Ivanov, Pavel Vitalievich, Popov, Sergey Olegovich
• Primary Examiner(s): Kim; Gene
• Assistant Examiner(s): Niconovich; Alexander R
• Application Number:
  US11/916,289
• Publication Number:
  US 20100116259A1
• Time in Patent Office: 1,468 Days
• Field of Search: 124/25, 124/25.6
• US Class Current: 124/25
• CPC Class Codes: F41B 5/105 Cams or pulleys for compound bows
• CPC Class Codes: F41B 5/123 Compound crossbows

Abstract

This invention relates to sporting and hunting throwing weaponry, more specifically, crossbow. The crossbow comprises a limbs riser, limbs oriented towards the shot direction, cams installed on the ends of said limbs, bowstring and cables passing through said cams and a barrel on which said limbs riser, a trigger mechanism and a foregrip are installed.

Claims

1. A reverse crossbow containing limbs, a limbs riser, the limbs being directed in the direction of shooting, identical cams having a mechanical center and located on ends of loose parts of said limbs, bowstring and cables passing through cams, a barrel where the said limbs riser is placed, a trigger mechanism and a foregrip, wherein the limbs riser is located on the edge of the barrel behind the trigger mechanism and is centered about the barrel using a cone on the bottom surface of the limbs riser, placed in a reciprocal conical recess in the barrel, where the said limbs riser is fixed to the barrel using a single threaded junction, wherein the initial angle of installation of limbs on their riser and the distance between the points of their fastening is chosen in such a manner that when raising the crossbow the axis of rotation of each cam crosses the line parallel to the central axis of the crossbow and passing through the point of the beginning of bend of each of the limbs, thus the distance between the axes of rotation of cams becomes less than the distance between the points of the beginning of bend of limbs, the axis of rotation of each cam is displaced about its mechanical center that is located inside the area formed by limbs, on a perpendicular to the point of mechanical center located on a straight line, connecting the mechanical center and the exit point of the bowstring, where the cam is placed with a possibility of rotation, where during such a rotation the said mechanical center does not cross the straight line parallel to the straight line connecting the mechanical center of the said cam and the exit point of the said bowstring, and passing through the axis of rotation of the said cam, and the said foregrip has a conic shape with roundings on its ends and it is placed at an angle of 10 to 25°

to the said crossbow barrel, and the thickened part of the said foregrip is located in the area most close to the barrel.