Archery arrow nock

• US 4,305,588 A
• Filed: 04/04/1980
• Issued: 12/15/1981
• Est. Priority Date: 04/26/1979
• Status: Expired due to Term

• Current Assignee: Paul A. Dodge
• Original Assignee: Paul A. Dodge
• Inventors: Dodge, Paul A.
• Primary Examiner(s): SHAPIRO, PAUL
• Application Number:
  US06/137,020
• Time in Patent Office: 620 Days
• Field of Search: 273/416-423, 403/268, 403/267, 403/265, 403/334, 403/292
• US Class Current: 473/578
• CPC Class Codes: F42B 6/06 Tail ends, e.g. nocks, fletching
• CPC Class Codes: Y10T 403/473 Socket or open cup for bonding material

Abstract

An arrow nock which includes a base secured to the rearward end of an arrow shaft. First and second legs extending from the base are transversely spaced apart to define a bowstring notch. First and second curved beads are centrally located on the interior surfaces of the legs which define the notch and have outwardly projected crests which form a throat to impede movement of the bowstring from the seat of the notch when the arrow is not drawn back, but permit relatively free flight of the arrow when the bowstring is drawn back and released. The nock has a forwardly open cavity for assembly to the end of an arrow shaft. The cavity can have retaining ribs located therein for retention of glue to secure the nock to the arrow shaft.

Claims

1. An arrow nock comprising:

a base securable to an end of an arrow shaft;

first and second legs rearwardly extended from the base and transversely spaced apart having interior surfaces defining a bowstring notch inwardly terminated at a bowstring seat at the conjunction of the legs;

first and second curved bead means centrally located on the interior surfaces of the first and second legs having spaced apart crests projected into said notch in facing relationship to one another forming a bowstring restraining throat having a transverse dimension less than the transverse dimension of the notch proximate the seat, each bead means having a generally teardrop shape, an inner end having an arcuate outer surface and an outer end having an arcuate outer surface.

2. The arrow nock of claim 1 wherein:

each bead means has an elongate gradually sloping ramp surface orientated toward the seat of the notch.

3. The arrow nock of claim 2 wherein:

the width of each bead means is less than the width of the respective leg upon which it is situated.

4. The arrow nock of claim 3 wherein:

the base and legs and bead means are molded of plastic.

5. The arrow nock of claim 1 wherein:

the bowstring seat has a convex curve.

6. The arrow nock of claim 1 wherein:

the width of each bead means is less than the width of the respective leg upon which the bead means is attached.

7. The arrow nock of claim 1 wherein:

the arcuate surface of the inner end of the bead means is smaller than the arcuate outer surface of the outer end of the bead means.

8. The arrow nock of claim 1 wherein:

each bead means has a sloping ramp surface orientated toward the seat of the notch, said sloping ramp surface having a major ramp portion extended inward towards the seat of the notch from the crest of the bead means and a minor ramp portion extended inwardly towards the seat of the notch from the major ramp portion, said major ramp portion having an inclination greater than the minor ramp portion relative to a longitudinal nock axis.

9. The arrow nock of claim 8 wherein:

said major ramp portions are orientated at an inclination of 9 degrees relative to a longitudinal axis of the arrow nock, and said minor ramp portions are inclined at an angle of approximately 4 degrees relative to a longitudinal axis of the arrow nock.

10. The arrow nock of claim 8 wherein:

said base has walls defining a forwardly open cavity shaped for receipt of a portion of the rearward end of an arrow shaft; and

retaining rib means located on said walls defining said cavity for retaining said arrow nock on the rearward end of an arrow shaft.

11. The arrow nock of claim 10 wherein:

said rib means comprises a plurality of concentric spaced apart ribs formed on said side wall defining said cavity and extending inward of said cavity.

12. The arrow nock of claim 10 wherein:

said cavity is generally conical in shape for fitting an arrow shaft having a generally conical shape rearward tip, said rib means comprising at least one helical spiral rib formed on said wall defining said cavity and extending inward thereof.

13. The arrow nock of claim 12 including:

a second helical shaped rib formed on said wall defining said cavity and intertwined with said first rib.

14. The arrow nock of claim 13 wherein:

the width of each bead means is less than the width of the respective leg upon which it is situated.

15. The arrow nock of claim 1, 2 or 3 including:

a first longitudinal ridge located on the interior surface of the first leg extended from the first bead means to the notch seat;

a second longitudinal ridge located on the interior surface of the second leg extended from the second bead means to the notch seat.

16. The arrow nock of claim 15 wherein:

the ridges are narrower than the bead means and have crests protruding into the notch spaced apart a distance greater than the crests of the bead means.

17. The arrow nock of claim 16 wherein:

said base has walls defining a forwardly open cavity shaped for receipt of a portion of the rearward end of an arrow shaft; and

retaining rib means located on said walls defining said cavity for retaining the base with respect to the end of the arrow shaft.

18. The arrow nock of claim 17 wherein:

said rib means comprises a plurality of concentric spaced apart ribs formed on said side wall defining said cavity and extending inward of said cavity.

19. The arrow nock of claim 17 wherein:

said cavity is generally conical in shape for fitting an arrow shaft having a generally conical shaped rearward tip, and said rib means comprises at least one helical spiral rib formed on said wall defining said cavity and extending inward thereof.

20. The arrow nock of claim 19 including:

a second helical spiral rib formed on said wall defining said cavity and intertwined with said first rib.

21. An arrow nock comprising:

a base securable to an end of an arrow shaft;

first and second legs rearwardly extended from the base and transversely spaced apart having interior surfaces to define a bowstring notch inwardly terminated at a bowstring seat at the conjunction of the legs;

first and second curved bead means centrally located on the interior surfaces of the first and second legs having spaced apart crests projected into said notch in facing relationship to one another forming a bowstring restraining throat having a transverse dimension less than the transverse dimension of the notch proximate the seat;

a first longitudinal ridge located on the interior surface of the first leg extended from the first bead means to the notch seat;

a second longitudinal ridge located on the interior surface of the second leg extended from the second bead means to the notch seat.

22. The arrow nock of claim 21 wherein:

each bead means is generally teardrop shaped with an elongate gradually sloping ramp surface orientated toward the seat of the notch.

23. The arrow nock of claim 22 wherein:

the width of each bead means is less than the width of the respective leg upon which it is situated.

24. The arrow nock of claim 21 wherein:

said base has walls defining a forwardly open cavity shaped for receipt of a portion of the rearward end of an arrow shaft;

retaining rib means located on said walls defining said cavity for retaining glue therein with respect to said walls defining the cavity and the portion of the rearward end of the arrow shaft locatable in the cavity;

said cavity being generally conical in shape for fitting an arrow having a generally conical shaped rearward tip.

25. The arrow nock of claim 24 wherein:

said rib means comprises a plurality of concentric spaced apart ribs formed on said side wall defining said cavity and extending inward of said cavity.

26. The arrow nock of claim 24 wherein:

said rib means comprises at least one helical spiral rib formed on said wall defining said cavity and extending inward thereof.

27. The arrow nock of claim 26 wherein:

each bead means is generally teardrop shaped with an elongate gradually sloping ramp surface orientated toward the seat of the notch.

28. The arrow nock of claim 27 wherein:

the width of each bead means is less than the width of the respective leg upon which it is situated.

29. The arrow nock of claim 26 including:

a second helical shaped rib formed on said wall defining said cavity and intertwined with said first rib.

30. The arrow nock of claim 26 including:

a plurality of said helical shaped ribs intertwined with one another formed on said wall defining said cavity.

31. The arrow nock of claim 21 including:

a first longitudinal ridge located on the interior surface of the first leg extended from the first bead means to the notch seat;

a second longitudinal ridge located on the interior surface of the second leg extended from the second bead means to the notch seat.

32. The arrow nock of claim 21 wherein:

each bead means is generally teardrop shaped with a sloping ramp surface orientated toward the seat of the notch, said sloping ramp surface having a major ramp portion extended inward towards the seat of the notch from the crest of the bead means and a minor ramp portion extended inwardly towards the seat of the notch from the major ramp portion, said major ramp portion having an inclination greater than the minor ramp portion relative to a longitudinal nock axis.

33. An arrow for use with a bow equipped with a bowstring comprising:

an elongated shaft having a forward end and a rear end;

an arrowhead mounted on the forward end of the shaft, and a nock mounted on the rear end of the shaft, said nock having a base secured to said rear end of the shaft;

a plurality of legs attached to the base and projected rearwardly from the base, said legs including first and second transversely spaced legs having facing interior surfaces joined to a bottom surface of the base defining a groove for accommodating the bowstring;

each of said interior surfaces including convex curved bead means providing the groove with a throat between said surfaces, each of said bead means having a crest forming the narrowest width of the throat, said width being smaller than the diameter of the bowstring whereby the nock holds the arrow on the bowstring, each bead means having a generally teardrop shape and an elongated generally sloping ramp surface orientated toward the bottom surface of the base and having an inner end having an arcuate outer surface and an outer end having an arcuate outer surface.

34. The arrow of claim 33 wherein:

said base has a recess accommodating the end of the shaft.

35. The arrow of claim 33 wherein:

the bottom surface of the base is a bowstring seat having a convex curve.

36. The arrow of claim 33 wherein:

the width of each bead means is less than the width of the leg carrying the bead means.

37. The arrow of claim 33 wherein:

the arcuate outer surface of the inner end of the bead means is smaller than the arcuate outer surface of the outer end of the bead means.

38. An arrow nock comprising:

a base securable to an end of an arrow shaft;

first and second legs rearwardly extended from the base and transversely spaced apart having interior surfaces defining a bowstring notch inwardly terminated at a bowstring seat at the conjunction of the legs;

first and second curved bead means centrally located on the interior surfaces of the first and second legs having spaced apart crests projected into said notch in facing relationship to one another forming a bowstring restraining throat having a transverse dimension less than the transverse dimension of the notch proximate the seat, each bead means being generally teardrop shaped with a sloping ramp surface orientated toward the seat of the notch, said sloping ramp surface having a major ramp portion extended inward towards the seat of the notch from the crest of the bead means and a minor ramp portion extended inwardly towards the seat of the notch from the major ramp portion, said major ramp portion having an inclination greater than the minor ramp portion relative to a longitudinal nock axis, said major ramp portions being orientated at an inclination of 9 degrees relative to a longitudinal axis of the arrow nock, and said minor ramp portions being inclined at an angle of approximately 4 degrees relative to a longitudinal axis of the arrow nock.