CROSSBOW WITH TAKE-UP CABLES HIGHER THAN LET-OFF CABLE

• US 20150285582A1
• Filed: 04/07/2014
• Published: 10/08/2015
• Est. Priority Date: 04/07/2014
• Status: Abandoned Application

• Current Assignee: Poe Lang Enterprise Co., Ltd.
• Original Assignee: Poe Lang Enterprise Co., Ltd.
• Inventors: Chang, Eldwin
• Application Number:
  US14/246,154
• Publication Number:
  US 20150285582A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: F41B 5/105 Cams or pulleys for compound bows
• CPC Class Codes: F41B 5/123 Compound crossbows

Abstract

A crossbow includes a stock, a riser disposed at a front of the stock, a pair of limbs attached to opposite ends of the riser, first and second pulleys respectively mounted on rear tips of the limbs, and a bow string set. The stock. Each of the first and second pulleys includes a primary wheel and a secondary wheel. The bow string set includes a let-off cable, a first take-up cable and a second take-up cable. The let-off cable extends across and over the track of the stock and has opposite ends respectively trained about the primary wheels of the first and second pulleys. In particular, both of the first and second take-up cable extend across the stock and are substantially positioned higher than the let-off cable.

Claims

1. A crossbow comprising:

a stock having at its top a track for receiving a projectile and at its bottom a trigger for launching the projectile;

a riser disposed at a front of the stock;

a pair of limbs attached to opposite ends of the riser;

first and second pulleys respectively mounted on rear tips of the limbs, each pulley including a primary wheel and a secondary wheel adjacent to the primary wheel;

a bow string set including a let-off cable, a first take-up cable and a second take-up cable;

the let-off cable extending across the track of the stock at a height above the track of the stock and having opposite ends respectively trained about the primary wheels of the first and second pulleys;

the first take-up cable extending across the track of the stock with one end strung about the secondary wheel of the first pulley and the other end anchored to the second pulley; and

the second take-up cable extending across the track of the stock with one end strung about the secondary wheel of the second pulley and the other end anchored to the first pulley; and

at least one retaining rod positioned in between the first take-up cable and the let-off cable to lift up the first take-up cable to the height above the track of the stock, the retaining rod has one end secured to the riser and the other end extending in between the first take-up cable and the let-off cable;

wherein the first and second take-up cables are both substantially positioned higher than the let-off cable.

2. A crossbow as recited in claim 1, wherein at least the first pulley is eccentric.

3. (canceled)

4. (canceled)