Arrow nock system

• US 5,919,105 A
• Filed: 01/16/1998
• Issued: 07/06/1999
• Est. Priority Date: 01/16/1998
• Status: Expired due to Fees

• Current Assignee: Daniel A. Summers
• Original Assignee: Daniel A. Summers
• Inventors: Summers, Daniel A.
• Primary Examiner(s): Ricci, John A.
• Application Number:
  US09/007,920
• Time in Patent Office: 536 Days
• Field of Search: 124/91, 473/578, 473/586, 473/FOR 216, 473/FOR 223
• US Class Current: 473/578
• CPC Class Codes: F42B 6/06 Tail ends, e.g. nocks, fletching

Abstract

An arrow nock system for use with an arrow. The arrow may include cylindrical shaft with a frusto-conical projection at the rear. A butt piece with a complementary frusto-conical interior bore is secured to the projection. The butt piece includes a proximal half, closer to the arrow, with a cylindrical outer surface equal to the diameter of the arrow shaft, and a distal half with a frusto-conical outer surface. Near the outer end of the distal half is an annular indentation. A nock piece includes a frusto-conical interior bore complementary with the distal half of the butt piece. The bore includes an annular protrusion engageable with the indentation in a rotatable snap-fit. The nock includes a cylindrical outer surface, and a groove at the rear to receive a string of a bow.

Claims

1. An arrow nock system comprising in combination:

an arrow shaft with a cylindrical configuration and having a distal end, a proximal end and an intermediate extent therebetween, the proximal end having a frusto-conical protrusion formed thereon in coaxial relationship therewith, wherein a diameter of a base of the protrusion is equal to that of the shaft;

a butt piece having a length approximately equal to that of the protrusion of the arrow shaft, the butt piece having a distal half having an outer surface with a frusto-conical configuration, an annular indentation formed in the outer surface of the distal half adjacent to a distal end of the distal half and in concentric relationship therewith, and an annular protrusion formed on the outer surface of the distal half between the annular indentation and the distal end of the distal half, the butt piece further including a proximal half having an outer surface with a cylindrical configuration having a diameter equal to that of the arrow shaft, the distal and proximal halves having an interior bore with a frusto conical configuration formed therein in concentric relationship therewith, wherein a base of the interior bore is coincident with a proximal end of the proximal half for being fixedly secured to the protrusion of the arrow shaft; and

an arrow nock having a proximal half with an outer surface with a cylindrical configuration having a diameter equal to that of the arrow shaft, the proximal half of the arrow nock further having an opening formed in a proximal end thereof with a frusto-conical configuration situated in concentric relationship therewith, an annular protrusion formed in an inner surface of the opening adjacent to a distal end of the proximal half of the arrow nock and in concentric relationship therewith, and an annular indentation formed in the inner surface of the opening between the annular protrusion of the arrow nock and the distal end of the proximal half of the arrow nock, wherein the annular protrusion of the arrow nock extends radially inward such that the opening of the proximal half of the arrow nock is adapted to snappily and rotatably receive the distal half of the butt piece, the arrow nock further including a pair of ears each having a proximal end mounted to diametrically opposed sides of the distal end of the proximal half of the arrow nock for defining a groove adapted to releasably receive a string of a bow, each ear having a length equal to that of the proximal half of the arrow nock and including a radially extending lip coupled to a distal end thereof and a inwardly extending protrusion formed in an inner surface of the ear at the distal end thereof.

2. An arrow nock system comprising:

an arrow shaft; and

an arrow nock defining a groove adapted to releasably receive a string of a bow, the arrow nock being rotatably coupled with respect to the shaft, wherein the groove of the arrow nock may be rotated about an axis about which the arrow shaft resides;

wherein a butt piece is fixedly secured to the arrow shaft and the arrow nock is rotatable coupled to the butt piece;

wherein the arrow nock is releasably coupled to the butt piece via a snap coupling.

3. An arrow nock system as set forth in claim 2 wherein the butt piece and arrow nock each have a common length.

4. An arrow nock system as set forth in claim 2 wherein the snap coupling includes a protrusion and bore combination, wherein at least one of protrusion and bore has an annular indentation formed therein.

5. An arrow nock system as set forth in claim 2 wherein the arrow nock includes a pair of ears for defining the groove.

6. An arrow nock system as set forth in claim 5 wherein the ears each have a protrusion extending inwardly from an inner surface thereof for engaging the string.

7. An arrow nock system as set forth in claim 5 wherein the ears each have an outwardly extending lip.

8. An arrow nock system comprising:

an arrow shaft; and

an arrow nock defining a groove adapted to releasably receive a string of a bow;

wherein a butt piece is fixedly secured to the arrow shaft at a tapered interface and the arrow nock is releasably coupled to the butt piece via a snap coupling.