US 2022/0178646 A1 · CROSSOVER CROSSBOW

Abstract

A crossbow includes a frame, a riser coupled to the frame, a first flexible limb, a second flexible limb, a third flexible limb, and a fourth flexible limb. A first cam assembly couples to the first flexible limb and the second limb and includes a first draw string journal, a first power cable journal, and a second power cable journal. A second cam assembly couples to the third flexible limb and the fourth flexible limb and includes a second draw string journal, a third power cable journal, and a fourth power cable journal. A draw string is received in the first draw string journal and the second draw string journal. Power cables cross over the center rail, above and below the draw string, and are received in the first power cable journal, the second power cable journal, the third power cable journal, and the fourth power cable journal, respectively.

A crossbow, comprising:

a string latch configured to hold a draw string and a nocked arrow within a firing plane;
a center rail providing an arrow support configured to position one end of the nocked arrow along the firing plane;
a frame coupled to the center rail;
a riser coupled to the frame, the riser configured to:
position fixed ends of a first flexible upper side limb and a second flexible upper side limb such that free ends of the first flexible upper side limb and the second flexible upper side limb flex along an upper plane disposed vertically above the firing plane, and
position fixed ends of a first flexible lower side limb and a second flexible lower side limb such that free ends of the first flexible lower side limb and the second flexible lower side limb flex along a lower plane disposed vertically below the firing plane;
a first cam assembly coupling the free ends of the first flexible upper side limb and the first flexible lower limb on a first side of the center rail, the first cam assembly comprising:
a first draw string path substantially co-planar with the firing plane,
a first upper string journal disposed vertically above the first draw string path, and
a first lower string journal disposed vertically below the first draw string path;
a second cam assembly coupling the free ends of the second flexible upper side limb and the second flexible lower side limb on a second side of the center rail, the second cam assembly comprising:
a second draw string path substantially co-planar with the firing plane,
a second upper string journal disposed above the second draw string path, and
a second lower string journal disposed below the second draw string path;
a draw string having a first end coupled to the first cam assembly along the first draw string path, and a second end coupled to the second cam assembly along the second draw string path, the draw string extending across the center rail along the firing plane;
a first upper power cable having a first end operatively coupled to the first upper string journal, and a second end operatively coupled to the free end of the second flexible upper side limb, the first upper power cable extending vertically above the center rail and the firing plane;
a second upper power cable having a first end operatively coupled to the second upper string journal, and a second end operatively coupled to the free end of the first flexible upper side limb, the second upper power cable extending vertically above the center rail and the firing plane;
a first lower power cable having a first end operatively coupled to the first lower string journal, and a second end operatively coupled to the free end of the second flexible lower side limb, the first lower power cable extending vertically below the center rail and the firing plane;
and
a second lower power cable having a first end operatively coupled to the second lower string journal, and a second end operatively coupled to the free end of the first flexible lower side limb, the second lower power cable extending vertically below the center rail and the firing plane.

17 more elements

Crossover crossbow

Life of this patent

Crossover crossbow

Life of this patent

Abstract

Claims20