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US 9,518,806 B2Granted
Self centering nock
OwnerWilliam E. Pederseninventor
Life of this patent
Estimating the term…
Abstract
A self-centering nock is provided for use in a well-balanced nock-arrow or nock-bolt assembly. The self-centering nock includes compliant projecting protrusions or compliant arms that are substantially rotationally symmetric about a cross section normal to a main axis of the self-centering nock. The compliant projecting protrusions or compliant arms may be received in bolts that have bores of differing internal dimensions.
Claims21
A nock, comprising:
- a light source;
- a first end comprising an opening configured to receive a string of at least one of a bow and a crossbow, wherein the first end allows the light source to transmit light through and beyond an external surface of the first end;
- a structural support piece, that does not obstruct the opening, having a distal portion contacting the first end, and
- a substantially cylindrical shaped portion, extending from the structural support piece, comprising a grooved external surface, wherein at least a portion of an external diameter of the cylindrical shaped portion is configured to be disposed in and contact an internal surface of a bore of an arrow or a crossbow bolt.
1 more element
A nock, comprising:
- a light source;
- a first end comprising a substantially U-shaped opening configured to receive a string of at least one of a bow and a crossbow, wherein the first end allows the light source to transmit light beyond an external surface of the first end;
- a structural support piece, that does not obstruct the U-shaped opening, having a distal portion contacting the first end, and
- a substantially cylindrical shaped portion, extending from the structural support piece, comprising a grooved external surface, wherein at least a portion of an external diameter of the cylindrical shaped portion is configured to be disposed in and contact an internal surface of a bore of an arrow or a crossbow bolt.
1 more element
A system, comprising:
- a crossbow bolt having a bore;
- and
- a nock that includes i) a light source;
- ii) a first end comprising a substantially U-shaped opening configured to receive a string of a crossbow, wherein the first end allows the light source to transmit light through and beyond an external surface of the first end;
- iii) a structural support piece, that does not obstruct the U-shaped opening, having a distal portion contacting the first end, and iv) a substantially cylindrical shaped portion, extending from the structural support piece, comprising a grooved external surface, wherein at least a portion of an external diameter of the cylindrical shaped portion is configured to be disposed in and contact an internal surface of the bore.
2 more elements
Dependencies are inferred from the claim text.