Foam dart having a safety cap

• US 10,030,950 B1
• Filed: 10/25/2017
• Issued: 07/24/2018
• Est. Priority Date: 10/25/2017
• Status: Active Grant

• Current Assignee: Easebon Services Limited
• Original Assignee: Easebon Services Limited
• Inventors: Chia, Francis See Chong, Xia, Xubin
• Primary Examiner(s): Niconovich, Alexander
• Application Number:
  US15/793,429
• Time in Patent Office: 272 Days
• Field of Search: 473572, 473578, 473582
• CPC Class Codes: F42B 12/745 the core being made of plastics; Compounds or blends of plastics and other materials, e.g. fillers
• CPC Class Codes: F42B 6/003 Darts
• CPC Class Codes: F42B 6/08 Arrow heads; Harpoon heads

Abstract

A toy dart includes a deformable cap that safely impacts a target. The cap includes two layers of substantially parallel hollow passages that provide spaces that allow the cap to deform. The lower layer, having two hollow passages, is supported by exterior posts and an interior wall between the two hollow passages. The upper layer, having three hollow passages, is supported by exterior posts and interior walls that are laterally offset from the interior wall of the lower layer. The upper and lower layers are separated vertically by a substantially flat divider. Due to the difference in the number of hollow passages and interior walls in each layer, the upper layer is more rigid than the lower layer such that the lower layer of the cap deforms more than the upper layer of the cap upon initial impact with the target.

Claims

1. A toy dart, comprising:

an elongate dart body having an interior bore extending from a head end to a tail end of the elongate dart body in a first, longitudinal direction; and

a deformable dart cap affixed to the head end of the elongate dart body, the deformable dart cap having a top, a bottom that is affixed into the interior bore at the head end of the elongate dart body, and a substantially cylindrically-shaped outer surface extending from the top to the bottom of the deformable dart cap in the first, longitudinal direction;

wherein the substantially cylindrically-shaped outer surface of the deformable dart cap has two layers of hollow passages, each of the hollow passages extending from a respective first opening on the substantially cylindrically-shaped outer surface through the deformable dart cap in a second direction to a respective second opening on the substantially cylindrically-shaped outer surface, wherein the second direction is substantially orthogonal to the first, longitudinal direction of the elongate dart body, the two layers of hollow passages comprising;

(1) a lower layer, in proximity to the bottom of the deformable dart cap, comprising at least two of the hollow passages extending through the deformable dart cap and a lower layer interior boundary between the at least two hollow passages of the lower layer;

(2) an upper layer, above the lower layer and covered by the top of the deformable dart cap, comprising at least three of the hollow passages extending through the deformable dart cap, wherein upper layer interior boundaries between the at least three hollow passages of the upper layer are offset in position laterally from the lower layer interior boundary between the at least two hollow passages of the lower layer; and

(3) a substantially flat divider separating the upper and lower layers that is also substantially orthogonal to the first, longitudinal direction of the elongate dart body;

wherein the deformable dart cap is deformable so as to substantially prevent or limit injuries that may be caused by impact of the toy dart on a person or object.

2. The toy dart of claim 1, wherein the upper and lower layers of the deformable dart cap comprise two exterior posts, each extending longitudinally along the outer surface of the deformable dart cap and spaced approximately 180 degrees from one another.

3. The toy dart of claim 2, wherein the at least two of the hollow passages of the lower layer of the deformable dart cap are adjacent and substantially parallel to one another, and are separated from one another by an interior wall that provides the lower layer interior boundary therebetween.

4. The toy dart of claim 3, wherein the at least two of the hollow passages of the lower layer of the deformable dart cap are approximately equal in cross section.

5. The toy dart of claim 3, wherein the upper and lower layers of the deformable dart cap are connected to one another by two exterior posts, each extending longitudinally along the outer surface of the deformable dart cap and spaced approximately 180 degrees from one another, and wherein the interior wall is located substantially midway between the two exterior posts such that there is support for the lower layer radially at approximately every 90 degrees about a circumference of the deformable dart cap.

6. The toy dart of claim 3, wherein the at least three of the hollow passages of the upper layer comprise two outer hollow passages and a third, inner hollow passage situated between the two outer hollow passages, and wherein the two outer hollow passages and third, inner hollow passage are substantially parallel to one another.

7. The toy dart of claim 6, wherein the two outer hollow passages are approximately equal in cross-section, and wherein the third, inner hollow passage has a larger cross section than each of the respective cross-sections of the two outer hollow passages.

8. The toy dart of claim 6, further comprising, in the upper layer of the deformable dart cap, a second interior wall located at a first position between a first of the two outer hollow passages and the third, inner hollow passage, and a third interior wall located at a second position between a second of the two outer hollow passages and the third, inner hollow passage, wherein the second and third interior walls provide the upper layer interior boundaries between the at least three hollow passages of the upper layer.

9. The toy dart of claim 8, wherein the first interior wall is positioned in the lower layer to be laterally offset from the first position of the second interior wall and the second position of the third interior wall in the upper layer such that the lower layer of the deformable dart cap is configured to compress more than the upper layer of the deformable dart cap upon initial impact of the top of the toy dart on the person or on an object.

10. The toy dart of claim 9, wherein the third interior wall of the lower layer is positioned below and substantially midway between the first and second interior walls of the upper layer.

11. The toy dart of claim 1, wherein the deformable dart cap comprises a material with a Shore A durometer that is within a range of between 20 to 40.

12. The toy dart of claim 1, wherein the deformable dart cap comprises a material with a Shore A durometer of approximately 30.

13. The toy dart of claim 1, wherein the deformable dart cap has a Shore A durometer that is within a range of between 20 to 80.

14. The toy dart of claim 1, wherein the deformable dart cap has a Shore A durometer that is within a range of between 40 to 70.

15. The toy dart of claim 1, wherein the deformable dart cap has a Shore A durometer of approximately 70.

16. The toy dart of claim 1, wherein the deformable dart cap further comprises a stem extending therefrom that is configured for insertion into the interior bore of the elongate dart body to affix the bottom of the deformable dart cap into the interior bore at the head end of the elongate dart body.

17. The toy dart of claim 16, wherein the stem comprises one or more grooves for placement of adhesive to bond the deformable dart cap to the elongate dart body.

18. The toy dart of claim 1, wherein the elongate dart body is substantially cylindrical.

19. The toy dart of claim 1, wherein the top of the deformable dart cap is curved.

20. The toy dart of claim 1, wherein the top of the deformable dart cap is substantially flat.

21. The toy dart of claim 1, wherein the deformable dart cap further comprises a suction cup at the top of the deformable dart cap.

22. The toy dart of claim 1, wherein the top of the deformable dart cap has a diameter of approximately 12.5 mm.

23. The toy dart of claim 1, wherein the deformable dart cap comprises thermoplastic rubber (TPR) that is injection molded.

24. The toy dart of claim 1, wherein the top of the deformable dart cap is shaped as a spherical segment, spherical frustum, or spherical dome.

25. The toy dart of claim 1, wherein the upper layer of the deformable dart cap has a greater number of hollow passages and interior boundaries than the lower layer of the deformable dart cap such that the upper layer is more rigid than the lower layer.

26. The toy dart of claim 1, wherein the elongate dart body comprises foam.

27. A toy dart, comprising:

an elongate dart body having an interior bore extending from a head end to a tail end of the elongate dart body in a first, longitudinal direction; and

a deformable dart cap affixed to the head end of the elongate dart body, the deformable dart cap having three tiers, including a first tier, a substantially flat second tier, and a third tier, each of the three tiers being substantially circular in cross-section and substantially parallel to one another axially in the first, longitudinal direction;

wherein the first tier is attached to the substantially flat second tier with a first set of at least two exterior posts and a first interior wall that form first and second hollow passages between the first tier and the substantially flat second tier, the first and second hollow passages each being substantially rectangular in cross-section and each extending substantially parallel to one another in a second direction of the deformable dart cap that is substantially orthogonal to the first, longitudinal direction, wherein the first set of at least, two exterior posts are spaced from one another by approximately 180°

;

wherein the substantially flat second tier is attached to the third tier with a second set of at least two exterior posts, and second and third interior walls that form third, fourth, and fifth hollow passages positioned above the first and second hollow passages between the substantially flat second tier and the third tier, the third, fourth and fifth hollow passages each being substantially rectangular in cross-section and each extending substantially parallel to one another in the second direction,

wherein the second set of at least two exterior posts are substantially in alignment with the first set of at least two exterior posts, and wherein the second and third interior walls are in respective positions that are offset laterally from a position of the first interior wall such that the first interior wall is not substantially in alignment with the second or third interior walls; and

wherein the deformable dart cap is deformable so as to substantially prevent or limit injuries that may be caused by impact of the toy dart on a person or object.

28. The toy dart of claim 27, wherein the first and second hollow passages are approximately equal in cross section.

29. The toy dart of claim 27, wherein the third and fifth hollow passages are approximately equal in cross-section, and wherein the fourth hollow passage is located between the third and fifth hollow passages and has a larger cross section than the cross-section of the third and fifth hollow passages.

30. The toy dart of claim 27, wherein the deformable dart cap comprises a material with a Shore A durometer that is within a range of between 20 to 40.

31. The toy dart of claim 27, wherein the deformable dart cap comprises a material with a Shore A durometer of approximately 30.

32. The toy dart of claim 27, wherein the deformable dart cap has a Shore A durometer that is within a range of between 20 to 80.

33. The toy dart of claim 27, wherein the deformable dart cap has a Shore A durometer that is within a range of between 40 to 70.

34. The toy dart of claim 27, wherein the deformable dart cap has a Shore A durometer of approximately 70.

35. The toy dart of claim 27, wherein the deformable dart cap further comprises a stem extending therefrom that is configured for insertion into the interior bore of the elongate dart body to affix the bottom of the deformable dart cap into the interior bore at the head end of the elongate dart body.

36. The toy dart of claim 35, wherein the stem comprises one or more grooves for placement of adhesive to bond the deformable dart cap to the elongate dart body.

37. The toy dart of claim 27, wherein a top of the deformable dart cap is curved.

38. The toy dart of claim 27, wherein a top of the deformable dart cap is substantially flat.

39. The toy dart of claim 27, wherein the deformable dart cap further comprises a suction cup at the top of the deformable dart cap.

40. The toy dart of claim 27, wherein a top of the deformable dart cap has a diameter of approximately 12.5 mm.

41. The toy dart of claim 27, wherein the deformable dart cap comprises thermoplastic rubber (TPR) that is injection molded.

42. The toy dart of claim 27, wherein the third tier of the deformable dart cap is shaped as a spherical segment, spherical frustum, or spherical dome.

43. The toy dart of claim 27, wherein the elongate dart body comprises foam.