Active feed paintball loader with flexible impeller
View Patent ↗An impeller for an active-feed paintball loader has resilient arms that engage paintballs in the lower portion (well) of the loader and advance them to and through the outfeed tube. The resilient arms are sufficiently stiff to move unobstructed paintballs located between the arms, and sufficiently flexible to yield when forced against stationary paintballs so as not to rupture the paintball shells, the arms substantially returning to their original shape when the obstruction is removed. Accordingly, when the motor is shut off, the arms will simply flex backward as they encounter stationary paintballs. Should a paintball jam occur in the vicinity of the impeller, the arm(s) can flex around the jammed ball without breaking it, and help to dislodge it so as to clear the jam.
1. An impeller for an active feed paintball loader, the loader having a housing for storing paintballs, a bottom well in the housing with a paintball outlet, and a motor-driven shaft projecting upwardly into the well; wherein the impeller comprises a hub adapted to be mounted on and rotate with the shaft in the well, and a plurality of resilient arms extending outwardly from the hub and accommodating paintballs therebetween, and wherein the hub has an upper portion from which the arms extend, and a separate lower hub extension adapted to be mounted on the shaft, the upper portion and the lower hub extension being configured to mate with each other and not rotate relative to one another.
2. An impeller according to claim 1 , wherein the upper portion of the hub and the arms are integrally formed of a first material, and the hub extension is formed of a second material that is more rigid than the first material.
3. An impeller according to claim 2 , wherein the first material is neoprene.
4. An impeller according to claim 1 , wherein the arms are substantially straight.
5. An impeller according to claim 4 , wherein the arms project substantially radially from the hub.
6. An impeller according to claim 5 , wherein the upper portion of the hub and the arms are integrally formed of a first material, and the hub extension is formed of a second material that is more rigid than the first material.
7. An impeller according to claim 6 , wherein the first material is neoprene.
8. An impeller according to claim 1 , wherein one of the upper portion of the hub and the hub extension has projections, and the other of the upper portion of the hub and the hub extension has recesses that mate with the projections.
9. An impeller according to claim 8 , wherein the projections comprise splines.
10. An impeller according to claim 9 , wherein the splines are on the hub extension, and the recesses are on the upper portion of the hub.
11. An impeller according to claim 10 , wherein the projections further comprise a circumferential flange on the hub extension, and the recesses comprise a circumferential groove on the upper portion of the hub that mates with the circumferential flange.
12. An impeller according to claim 11 , wherein the upper portion of the hub and the arms are integrally formed of a first material, and the hub extension is formed of a second material that is more rigid than the first material.
13. An impeller according to claim 12 , wherein the first material is neoprene.
14. An impeller according to claim 13 , wherein the arms are substantially straight.
15. An impeller according to claim 14 , wherein the arms project substantially radially from the hub.
16. An active feed paintball loader comprising a housing for storing paintballs, a bottom well in the housing with a paintball outlet, a rotatable shaft projecting upwardly into the well, a motor for driving the shaft, and an impeller in the well mounted on and rotatable with the shaft for moving paintballs toward the outlet, wherein the impeller comprises:
a hub mounted on and rotatable with the shaft; and
a plurality of resilient arms extending outwardly from the hub and accommodating paintballs therebetween.
17. An active feed paintball loader according to claim 16 , wherein the arms are substantially straight.
18. An active feed paintball loader according to claim 17 , wherein the arms project substantially radially from the hub.
19. An active feed paintball loader according to claim 18 , wherein the impeller is made of neoprene.
20. An active feed paintball loader according to claim 19 , wherein the hub and the arms are integrally molded.
21. An active feed paintball loader according to claim 18 , wherein the hub and the arms are integrally molded.
22. An active feed paintball loader according to claim 16 , wherein the hub and the arms are integrally molded.
23. An active feed paintball loader according to claim 22 , wherein the impeller is made of neoprene.
24. An active feed paintball loader according to claim 16 , wherein the hub has an upper portion from which the arms extend, and a separate lower hub extension adapted to be mounted on the shaft, the upper portion and the lower hub extension being configured to mate with each other and not rotate relative to one another.
25. An active feed paintball loader according to claim 24 , wherein the upper portion of the hub and the arms are integrally formed of a first material, and the hub extension is formed of a second material that is more rigid than the first material.
26. An active feed paintball loader according to claim 25 , wherein the first material is neoprene.
27. An active feed paintball loader according to claim 24 , wherein the arms are substantially straight.
28. An active feed paintball loader according to claim 27 , wherein the arms project substantially radially from the hub.
29. An active feed paintball loader according to claim 28 , wherein the upper portion of the hub and the arms are integrally formed of a first material, and the hub extension is formed of a second material that is more rigid than the first material.
30. An active feed paintball loader according to claim 29 , wherein the first material is neoprene.
31. An active feed paintball loader according to claim 24 , wherein one of the upper portion of the hub and the hub extension has projections, and the other of the upper portion of the hub and the hub extension has recesses that mate with the projections.
32. An active feed paintball loader according to claim 31 , wherein the projections comprise splines.
33. An active feed paintball loader according to claim 32 , wherein the splines are on the hub extension, and the recesses are on the upper portion of the hub.
34. An active feed paintball loader according to claim 33 , wherein the projections further comprise a circumferential flange on the hub extension, and the recesses comprise a circumferential groove on the upper portion of the hub that mates with the circumferential flange.
35. An active feed paintball loader according to claim 34 , wherein the upper portion of the hub and the arms are integrally formed of a first material, and the hub extension is formed of a second material that is more rigid than the first material.
36. An active feed paintball loader according to claim 35 , wherein the first material is neoprene.
37. An active feed paintball loader according to claim 36 , wherein the arms are substantially straight.
38. An active feed paintball loader according to claim 37 , wherein the arms project substantially radially from the hub.
39. An impeller comprising:
a hub; and
a plurality of resilient arms extending outwardly from the hub,
wherein the impeller is configured for placement in an active feed paintball loader, the loader having a housing for storing paintballs, a bottom well in the housing with a paintball outlet through which the impeller pushes paintballs, and a motor-driven shaft projecting upwardly into the well,
wherein the hub is configured to be mounted on and rotate with the shaft in the well, and the arms are sized to fit within the well and are spaced to accommodate paintballs therebetween, and
wherein the hub has an upper portion from which the arms extend, and a separate lower hub extension adapted to be mounted on the shaft, the upper portion and the lower hub extension being configured to mate with each other and not rotate relative to one another.
40. An impeller according to claim 39 , wherein the arms are substantially straight.
41. An impeller according to claim 40 , wherein the arms project substantially radially from the hub.
42. An impeller according to claim 41 , wherein the impeller is made of neoprene.
43. An impeller according to claim 42 , wherein the hub and the arms are integrally molded.
44. An impeller according to claim 41 , wherein the hub and the arms are integrally molded.
45. An impeller according to claim 39 , wherein the hub and the arms are integrally molded.
46. An impeller according to claim 45 , wherein the impeller is made of neoprene.
47. An impeller according to claim 39 , wherein the upper portion of the hub and the arms are integrally formed of a first material, and the hub extension is formed of a second material that is more rigid than the first material.
48. An impeller according to claim 47 , wherein the first material is neoprene.
49. An impeller according to claim 39 , wherein one of the upper portion of the hub and the hub extension has projections, and the other of the upper portion of the hub and the hub extension has recesses that mate with the projections.
50. An impeller according to claim 49 , wherein the projections comprise splines.
51. An impeller according to claim 50 , wherein the splines are on the hub extension, and the recesses are on the upper portion of the hub.
52. An impeller according to claim 51 , wherein the projections further comprise a circumferential flange on the hub extension, and the recesses comprise a circumferential groove on the upper portion of the hub that mates with the circumferential flange.