Cross bow having a safety device

• US 5,215,069 A
• Filed: 01/29/1992
• Issued: 06/01/1993
• Est. Priority Date: 01/29/1992
• Status: Expired due to Fees

• Current Assignee: Cha-Chang Liu
• Original Assignee: Cha-Chang Liu
• Inventors: Liu, Cha-Chang
• Primary Examiner(s): Reese, Randolph A.
• Assistant Examiner(s): RICCI, JOHN A
• Application Number:
  US07/827,764
• Time in Patent Office: 489 Days
• Field of Search: 124/17, 124/20.1, 124/20.3, 124/25, 124/31, 124/35.1, 124/40
• US Class Current: 124/25
• CPC Class Codes: F41B 5/12 Crossbows

Abstract

A cross bow including a string engaged to a bow prod of a stock, a pair of bars for drawing the string to a cocked position, a butt pivotally coupled to the rear end of the stock, a recess formed in the rear end of the stock, a member disposed on the rear end of the stock and including two depressions, a trigger disposed in the stock and including a shoulder, and a lever pivotally supported in the stock having one end engageable with either of the depressions and the other end engageable with the shoulder of the trigger so as to lock the trigger.

Claims

1. A cross bow comprising a stock including a front end and a rear end having a pin disposed therein, a bow prod supported on said front end of said stock, a string having opposite ends attached to corresponding ends of said bow prod, a cocking means for engaging said string and drawing said string from a rest position to a cocked position where said string is spaced rearwardly from said bow prod when said bow is cocked, a butt pivotally coupled to said rear end of said stock and including a catch disposed thereon for engagement with said pin of said stock so that said butt can be coupled to said stock, a recess formed in said rear end of said stock, a member disposed on said rear end of said stock and including a first depression and a second depression formed therein, a trigger disposed in said stock close to said rear end thereof and including a shoulder formed therein, and a lever having a middle portion pivotally coupled to said stock and including a first end engageable with either of said first depression and said second depression and a second end engageable with said shoulder of said trigger so as to lock said trigger when said first end of said lever is engaged with said second depression of said member, means connected to said cocking means for pushing said first end of said lever to engage with said second depression and said second end of said lever to engage with said shoulder of said trigger when said string is drawn to said cocked position such that said trigger is locked, and means to unlock said trigger comprising means to cause said lever to move to engage with said first depression of said member.

2. A cross bow comprising a stock including a front end, a rear end having a pin disposed therein and two side surfaces, a bow prod supported on said front end of said stock, a string having opposite ends attached to corresponding ends of said bow prod, a cam track formed in each of said side surfaces of said stock, a butt pivotally coupled to said rear end of said stock and including a catch disposed thereon for engagement with said pin of said stock so that said butt can be coupled to said stock, two bars each including a first end pivotally engaged with said butt and a second end slidably engaged with each of said cam tracks so that said second ends of said bars can be caused to slide along said cam tracks, a snag formed integral on said second end of each of said bars for engagement with said string so that said string can be drawn from a rest position to a cocked position where it is rearwardly separated from said bow prod when said bow is cocked, a recess formed in said rear end of said stock, a member disposed on said rear end of said stock and including a first depression and a second depression formed therein, a trigger disposed in said stock close to said rear end thereof and including a shoulder formed therein, and a lever having a middle portion pivotally coupled to said stock and including a first end engageable with either of said first depression and said second depression and a second end engageable with said shoulder of said trigger so as to lock said trigger when said first end of said lever is engaged with said second depression of said member, said snag on one of said bars pushing said first end of said lever to engage with said second depression and said second end of said lever to engage with said shoulder of said trigger when said string is drawn to said cocked position such that said trigger is locked, and means to unlock said trigger comprising means to cause said lever to move to engage with said first depression of said member.

3. A cross bow comprising a stock including a front end, a rear end having a pin disposed therein and two side surfaces, a bow prod supported on said front end of said stock, a string having opposite ends attached to corresponding ends of said bow prod, a cam track formed in each of said side surfaces of said stock, a butt pivotally coupled to said rear end of said stock and including a catch disposed thereon for engagement with said pin of said stock so that said butt can be coupled to said stock, two bars each including a first end pivotally engaged with said butt and a second end slidably engaged with each of said cam tracks so that said second ends of said bars can be caused to slide along said cam tracks, a snag formed integral on said second end of each of said bars for engagement with said string so that said string can be drawn from a rest position to a cocked position where it is rearwardly separated from said bow prod when said bow is cocked, a recess formed in said rear end of said stock, a member disposed on said rear end of said stock and including a first depression and a second depression formed therein and located above said recess of said stock, a trigger disposed in said stock close to said rear end thereof and including an extension extended therefrom, said extension including a free end portion having a shoulder formed therein, and a lever having a middle portion pivotally coupled to said stock and including a first end extended upward into said recess of said stock and engageable with either of said first depression and said second depression and a second end engageable with said shoulder of said trigger so as to lock said trigger when said first end of said lever is engaged with said second depression of said member, said snag on one of said bars pushing said first end of said lever to engage with said second depression and said second end of said lever to engage with said shoulder of said trigger when said string is drawn to said cocked position such that said trigger is locked, and means to unlock said trigger comprising means to cause said lever to move to engage with said first depression of said member.