Self centering spin nock
First Claim
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1. An interlocking nock assembly for a fletched arrow shaft comprising:
- a retainer portion including;
at one end of the retainer portion, a portion sized and shaped to attach to the arrow shaft, and at another end of the retainer portion, a rigid projecting portion topped by a thrust bearing portion;
a nock portion including;
a bowstring rest portion, a collar portion with a bottom end forming an annulus, and, an aperture of the annulus defines a passage to a larger diameter enclosure than a diameter of the annulus, a race portion, and wherein the retainer portion and nock portion are irreversibly coupled; and
wherein the race portion is sized and shaped for contact with the thrust bearing portion, and the retainer portion and arrow shaft rotate in a substantially longitudinally fixed position relative to the bowstring rest portion upon release of the bowstring and prior to separation of the bowstring from the bowstring rest portion.
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Abstract
A nock for promoting a natural spin on an arrow shaft prior to the nock separating from a bowstring includes a nock segment possessing a bowstring rest portion, and a base portion which is coupled to a retaining portion via a collar portion. The retainer is attached to the end of an arrow shaft. The nock segment freewheels independently of the retainer and the arrow shaft to permit the arrow fletching moving through the air to act on the shaft inducing a natural spin to the shaft prior to separation of the bowstring and the nock.
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Citations
5 Claims
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1. An interlocking nock assembly for a fletched arrow shaft comprising:
a retainer portion including; at one end of the retainer portion, a portion sized and shaped to attach to the arrow shaft, and at another end of the retainer portion, a rigid projecting portion topped by a thrust bearing portion; a nock portion including; a bowstring rest portion, a collar portion with a bottom end forming an annulus, and, an aperture of the annulus defines a passage to a larger diameter enclosure than a diameter of the annulus, a race portion, and wherein the retainer portion and nock portion are irreversibly coupled; and wherein the race portion is sized and shaped for contact with the thrust bearing portion, and the retainer portion and arrow shaft rotate in a substantially longitudinally fixed position relative to the bowstring rest portion upon release of the bowstring and prior to separation of the bowstring from the bowstring rest portion. - View Dependent Claims (2, 3, 4, 5)
Specification