IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0416461
(2006-05-02)
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등록번호 |
US-7341115
(2008-03-11)
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발명자
/ 주소 |
- Maas,David R.
- Bjorge,Scott W.
|
출원인 / 주소 |
- PlanetAir Turf Products, LLC
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
90 |
초록
▼
In certain embodiments a soil aerator may include a hinged frame assembly that cooperates with one or more weight transferring systems adapted to permit an aeration subassembly to lift off the ground when an aeration tine impacts a hard obstacle such as a rock in the soil. The weight transferring s
In certain embodiments a soil aerator may include a hinged frame assembly that cooperates with one or more weight transferring systems adapted to permit an aeration subassembly to lift off the ground when an aeration tine impacts a hard obstacle such as a rock in the soil. The weight transferring systems may in the preferred embodiments be calibrated so that only minimal upward force, such as that caused by impact of an aeration tine with a rock, may cause the aeration subassembly to lift thereby significantly reducing or preventing damage to the aeration tines and drive assemblies and substantially prolonging the life of the aerator.
대표청구항
▼
What is claimed is: 1. A method for aerating a ground surface, comprising: moving an aerator over a ground surface, the aerator comprising a frame assembly, an aeration device coupled to the frame assembly, a front axle member located forward of the aeration device, a rear axle member located aft o
What is claimed is: 1. A method for aerating a ground surface, comprising: moving an aerator over a ground surface, the aerator comprising a frame assembly, an aeration device coupled to the frame assembly, a front axle member located forward of the aeration device, a rear axle member located aft of the aeration device, and a weight transfer system coupled to the frame assembly, wherein the weight transfer system includes at least two spring members that apply opposite moments to the frame assembly; and causing a bias device of the weight transfer system to apply a moment to the frame assembly so as to compel the aeration device away from the ground surface by transferring a portion of the frame assembly and aeration device's combined weight to the front axle member or the rear axle member. 2. The method of claim 1, wherein the weight transfer system is adapted to transfer a variable fraction of the weight of the aeration device to at least one of the front axle member and the rear axle member such that a head weight of the aeration device can be varied. 3. The method of claim 1, wherein the aerator is moved over the ground surface by a roller coupled to the front axle member, a first wheel coupled to the first rear axle member, and a second wheel coupled to a second rear axle member. 4. The method of claim 1, wherein the bias device of the weight transfer system includes a first spring member coupled to the frame assembly. 5. The method of claim 4, wherein the weight transfer system further includes a second spring member coupled to the rear axle member and the frame assembly. 6. The method of claim 1, wherein the aerator comprises at least two rear axle members each coupled to the frame by a separate suspension system. 7. The method of claim 1, wherein the bias device of the weight transfer system includes a constant force spring. 8. The method of claim 1, further comprising rotating and translating a plurality of tine shafts of the aeration device using a planetary gear system of the aeration device, the plurality of tine shafts bearing aeration tines. 9. The method of claim 8, wherein each aeration tine includes a curved soil fracturing edge. 10. The method of claim 1, wherein the frame assembly is hinged and the aeration device is urged about the hinge axis by the weight transfer system. 11. A method for aerating a ground surface, comprising: moving an aerator over a ground surface, the aerator comprising a frame assembly, an aeration device coupled to the frame assembly, a front axle member located forward of the aeration device, a rear axle member located aft of the aeration device, and a weight transfer system coupled to the frame assembly; and causing the weight transfer system to apply a moment to the frame assembly so as to transfer a portion of the frame assembly and aeration device's combined weight to the front axle member or the rear axle member, wherein the weight transfer system includes a constant force spring. 12. The method of claim 11, wherein the weight transfer system is adapted to transfer a variable fraction of the weight of the aeration device to at least one of the front axle member and the rear axle member such that a head weight of the aeration device can be varied. 13. The method of claim 11, wherein the aerator is moved over the ground surface by a roller coupled to the front axle member, a first wheel coupled to the first rear axle member, and a second wheel coupled to a second rear axle member. 14. The method of claim 11, wherein the weight transfer system includes a first spring member coupled to the frame assembly. 15. The method of claim 14, wherein the weight transfer system further includes a second spring member coupled to the rear axle member and the frame assembly. 16. The method of claim 11, wherein the aerator comprises at least two rear axle members each coupled to the frame by a separate suspension system. 17. The method of claim 11, wherein the weight transfer system includes at least two spring members that apply opposite moments to the frame assembly. 18. The method of claim 11, wherein the frame assembly is hinged and the aeration device is urged about the hinge axis by the weight transfer system. 19. The method of claim 11, further comprising rotating and translating a plurality of tine shafts of the aeration device using a planetary gear system of the aeration device, the plurality of tine shafts bearing aeration tines. 20. The method of claim 19, wherein each aeration tine includes a curved soil fracturing edge. 21. A method for aerating a ground surface, comprising: moving an aerator over a ground surface, the aerator comprising a frame assembly, an aeration device coupled to the frame assembly, a front axle member located forward of the aeration device, a rear axle member located aft of the aeration device, and a weight transfer system coupled to the frame assembly; and causing a bias device of the weight transfer system to apply a moment to the frame assembly so as to compel the aeration device away from the ground surface by transferring a portion of the frame assembly and aeration device's combined weight to the front axle member or the rear axle member, wherein the bias device of the weight transfer system includes a constant force spring. 22. The method of claim 21, wherein the weight transfer system is adapted to transfer a variable fraction of the weight of the aeration device to at least one of the front axle member and the rear axle member such that a head weight of the aeration device can be varied. 23. The method of claim 21, wherein the aerator is moved over the ground surface by a roller coupled to the front axle member, a first wheel coupled to the first rear axle member, and a second wheel coupled to a second rear axle member. 24. The method of claim 21, wherein the bias device of the weight transfer system includes a first spring member coupled to the frame assembly. 25. The method of claim 24, wherein the weight transfer system further includes a second spring member coupled to the rear axle member and the frame assembly. 26. The method of claim 21, wherein the aerator comprises at least two rear axle members each coupled to the frame by a separate suspension system. 27. The method of claim 21, wherein the weight transfer system includes at least two spring members that apply opposite moments to the frame assembly. 28. The method of claim 21, further comprising rotating and translating a plurality of tine shafts of the aeration device using a planetary gear system of the aeration device, the plurality of tine shafts bearing aeration tines. 29. The method of claim 28, wherein each aeration tine includes a curved soil fracturing edge. 30. The method of claim 21, wherein the frame assembly is hinged and the aeration device is urged about the hinge axis by the weight transfer system. 31. A method for aerating a ground surface, comprising: moving an aerator over a ground surface, the aerator comprising a frame assembly, an aeration device coupled to the frame assembly, a front axle member located forward of the aeration device, a rear axle member located aft of the aeration device, and a weight transfer system coupled to the frame assembly; and causing a bias device of the weight transfer system to apply a moment to the frame assembly so as to compel the aeration device away from the ground surface by transferring a portion of the frame assembly and aeration device's combined weight to the front axle member or the rear axle member, wherein the frame assembly is hinged and the aeration device is urged about the hinge axis by the weight transfer system. 32. The method of claim 31, wherein the weight transfer system is adapted to transfer a variable fraction of the weight of the aeration device to at least one of the front axle member and the rear axle member such that a head weight of the aeration device can be varied. 33. The method of claim 31, wherein the aerator is moved over the ground surface by a roller coupled to the front axle member, a first wheel coupled to the first rear axle member, and a second wheel coupled to a second rear axle member. 34. The method of claim 31, wherein the bias device of the weight transfer system includes a first spring member coupled to the frame assembly. 35. The method of claim 34, wherein the weight transfer system further includes a second spring member coupled to the rear axle member and the frame assembly. 36. The method of claim 31, wherein the aerator comprises at least two rear axle members each coupled to the frame by a separate suspension system. 37. The method of claim 31, wherein the weight transfer system includes at least two spring members that apply opposite moments to the frame assembly. 38. The method of claim 31, wherein the bias device of the weight transfer system includes a constant force spring. 39. The method of claim 31, further comprising rotating and translating a plurality of tine shafts of the aeration device using a planetary gear system of the aeration device, the plurality of tine shafts bearing aeration tines. 40. The method of claim 39, wherein each aeration tine includes a curved soil fracturing edge.
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