Bowstring release device

• US 5,025,772 A
• Filed: 11/13/1989
• Issued: 06/25/1991
• Est. Priority Date: 11/13/1989
• Status: Expired due to Fees

• Current Assignee: Stevenson, Mark W.
• Original Assignee: Stevenson, Mark W.
• Inventors: Stevenson, Mark W.
• Primary Examiner(s): Cuomo, Peter M.
• Assistant Examiner(s): Ricci, John A.
• Application Number:
  US07/434,174
• Time in Patent Office: 589 Days
• Field of Search: 124/35 A, 124/35.2
• US Class Current: 124/35.2
• CPC Class Codes: F41B 5/1469 Bow-string drawing or releasing devices F41B5/1473 takes precedence

Abstract

A bowstring release device is disclosed which provides greater ease, control and accuracy in the shooting of a bow and arrow. The structure and action of the device inhibits and prevents premature release of the bowstring while being drawn, and enables a smooth, natural and accurate release once the archer has taken aim. The device includes a housing having two members. One member contains holding and release means for the bowstring while the other member includes finger recesses for gripping by the archer. The two members naturally assume a first position relative to one another while the bowstring is being drawn, and this first position prevents release of the bowstring. Once the bowstring is drawn, the archer effectuates release by pivoting the finger grip member of the housing relative to the release member.

Claims

1. A bowstring release device, comprising:

a housing having a first member and a second member, wherein said second member has an imaginary longitudinal centerline, and wherein said first member includes at least two finger grip recesses for gripping by fingers of an archer, wherein a first recess on one side of said centerline located closet to said centerline extends deeper into said first member than a corresponding closet second recess on the other side of said centerline, and wherein said first member is pivotally mounted to said second member;

release means secured to said second member and operatively arranged to hold and release a bowstring; and

linkage means within said housing operatively arranged to activate said release means to release said bowstring when said first member is pivoted relative to said second member, wherein said linkage means comprises a partially arcuate link pivotally mounted within said first member which functions to transform rotational motion caused by said pivoting of said first member relative to said second member into translational motion of said link which releasably engages said release means.

2. A device as recited in claim 1 and including means for adjusting a pivot angle between said first and second members necessary to release said bowstring.

3. A device as recited in claim 1 wherein said first recess extends deeper into said first member than said second recess by a distance approximately equal to an average difference in length in an adult hand between a length of an index finger from a first knuckle to a second knuckle and a length of a third digit on the same hand from a first knuckle to a second knuckle.

4. A device as recited in claim 3 wherein a relative position of said first and second recesses functions to maintain said release device in a stable position as said bowstring is drawn so as to prevent a premature release of said bowstring.

5. A device as recited in claim 1 wherein said release means comprises a rotatable locking cam.

6. A device as recited in claim 1 wherein said release means comprises a rotatable locking cam in combination with a release rope.

7. A device as recited in claim 1 wherein said bowstring is arranged to propel an arrow in a first direction and wherein said second member has an imaginary longitudinal centerline which is initially displaced from said first direction and wherein drawing said bowstring by pulling on said finger grip recesses tends to align said centerline with said first direction and also prevents said release device from prematurely releasing said bowstring.

8. A device as recited in claim 1 wherein said linkage means comprises an arcuate link pivotally mounted within said housing which functions to transform rotational motion caused by said pivoting of said first member relative to said second member into translational motion of said link which releasably engages said release means.