Arrow nocks
First Claim
Patent Images
1. An arrow nock for mounting on the end of an arrow shaft, comprising(a) a cylindrical housing having first and second ends;
- (b) impeller means mounted within said housing and adapted for translation along the longitudinal axis of said housing;
(c) resilient means interposed between said first end of said housing and said impeller means having a quiescent expanded state holding said housing and impeller means separated with substantially maximum displacement along said axis;
(d) cocking means holding said resilient means compressed whereby said housing and said impeller means are positioned with minimum axial displacement along said axis; and
(e) release means for releasing said resilient means to expand.
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Abstract
An arrow nock having a telescoping impeller and housing with a resilient spring for enhancing the acceleration of launch. In various embodiments, effective together or independently, the housing and impeller are configured and coupled to: create arrow rotation during launch; grip the bowstring during notching and release it during launch; and generate tracking signals.
64 Citations
18 Claims
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1. An arrow nock for mounting on the end of an arrow shaft, comprising
(a) a cylindrical housing having first and second ends; -
(b) impeller means mounted within said housing and adapted for translation along the longitudinal axis of said housing; (c) resilient means interposed between said first end of said housing and said impeller means having a quiescent expanded state holding said housing and impeller means separated with substantially maximum displacement along said axis; (d) cocking means holding said resilient means compressed whereby said housing and said impeller means are positioned with minimum axial displacement along said axis; and (e) release means for releasing said resilient means to expand. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An arrow nock configured at a firs end for mounting on the end of an arrow and having a shaft projecting from a second end with a notch for engagement by a bowstring, comprising
(a) a cylindrical housing having forward and distal ends; -
(b) impeller means mounted within said housing and adapted for translation along the longitudinal axis of said housing; (c) resilient means interposed between one end of said housing and said impeller means having a quiescent expanded state holding said housing and impeller means separated with substantially maximum displacement along said axis; (d) torsional coupling means coupling said housing and said impeller means to impart relative rotation about said axis as said housing and said impeller means are axially displaced; (e) cocking means holding said resilient means compressed whereby said housing and said impeller means are positioned with minimum axial displacement along said axis; (f) release means for releasing said resilient means to expand; (g) releasable gripper means to open and close said notch responsive to the axial relationship of said housing and said impeller means; and (h) signal means operative when said housing and said impeller means are in a predetermined axial position.
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Specification