IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0401442
(2003-03-26)
|
우선권정보 |
EP-0100309 (2002-03-27) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
Townsend and Townsend and Crew LLP
|
인용정보 |
피인용 횟수 :
8 인용 특허 :
4 |
초록
▼
A helical distributing chute conveyor for a receptacle for transferring loose varied fragile chemical and pharmaceutical products, particularly of the granular or pulverulent type. This chute conveyor, placed in a receptacle, comprises helical chute paths developed about a vertical axis; each chute
A helical distributing chute conveyor for a receptacle for transferring loose varied fragile chemical and pharmaceutical products, particularly of the granular or pulverulent type. This chute conveyor, placed in a receptacle, comprises helical chute paths developed about a vertical axis; each chute path, whom cross section is straight, is inclined transversely towards the vertical axis, the angle of inclination of the chute path being calculated such that, whatever their size, the particles of material transported deviate towards the vertical axis when the centrifugal force which originally keeps them on the chute path cancels out or drops below a critical value.
대표청구항
▼
1. A helical distributing chute conveyor for a receptacle for transferring loose varied regularly shaped fragile pharmaceutical or chemical products, this chute conveyor comprising at least one helical chute path developing about a vertical axis, said chute path having an upper side, a back side, a
1. A helical distributing chute conveyor for a receptacle for transferring loose varied regularly shaped fragile pharmaceutical or chemical products, this chute conveyor comprising at least one helical chute path developing about a vertical axis, said chute path having an upper side, a back side, a cross-section and a transverse angle of inclination, whereina central volume of the chute conveyor is hollowed out in the form of a well; each chute path is continuous and has substantially constant pitch; and each chute path forms a broad plateau, which is wide in comparison with a diameter of the receptacle, the cross section of which is substantially straight, inclined transversely towards the axis, the transverse angle of inclination of the chute path being such that the transferred regularly shaped fragile pharmaceutical or chemical products, given at the upper part of each helicoid sufficient speed for centrifugal force to keep them along the corresponding chute path, deviate towards the axis when the centrifugal force which holds them on the chute path cancels out or drops below a predetermined critical value, and wherein the chute paths act as baffles, taking most of the weight of the items heaped up therein, the slope of the back side of each helicoid chute path being slightly less than or equal to the repose angle of the transported regularly shaped fragile pharmaceutical or chemical product. 2. A helical transfer chute conveyor according to claim 1, wherein the transverse inclination of each chute path is greater than or equal to the repose angle of a given regularly shaped fragile pharmaceutical or chemical product.3. A helical transfer chute conveyor according claim 2, which is equipped with a mechanism allowing the transverse inclination of the helicoid chute path to be varied.4. A helical transfer chute conveyor according to claim 3, wherein this mechanism comprises linkages supporting the helicoid chute paths via articulated links.5. A helical transfer chute conveyor according to claim 4, wherein this mechanism comprises linkages of adjustable length.6. A bottom-emptied storage receptacle which is equipped with a helical chute conveyor according to claim 2.7. A helical transfer chute conveyor according claim 1, which is equipped with a mechanism allowing the transverse inclination of the helicoid chute path to be varied.8. A helical transfer chute conveyor according to claim 7, wherein this mechanism comprises linkages supporting the helicoid chute paths via articulated links.9. A helical transfer chute conveyor according to claim 8, wherein this mechanism comprises linkages of adjustable length.10. A bottom-emptied storage receptacle which is equipped with a helical chute conveyor according to claim 7.11. A storage receptacle according to claim 10, which comprises at least one loading device which injects transported products almost tangentially to each chute path at an upper part of each helicoid at sufficient speed that centrifugal force keeps the products along the corresponding chute path.12. A storage receptacle according to claim 11, wherein each loading device comprises a distributing device allowing a given regularly shaped fragile pharmaceutical or chemical product to be injected, depending on its dynamics, at a point closer to or further away from the vertical axis.13. A helical transfer chute conveyor according to claim 1, wherein each of the helical chute paths is equipped with an outer rim, the height of which is reduced with respect to the width of the respective chute path.14. A helical transfer chute conveyor according to claim 13, wherein the outer rim is pierced with cut-outs, a deflector being placed upstream of each cut-out.15. A bottom-emptied storage receptacle which is equipped with a helical chute conveyor according to claim 1.16. A storage receptacle according to claim 15, which comprises at least one loading device which injects a given regularly shaped fragile pharmaceutical or chemical product almost tangentially to each chute path at an upper part of each helicoid at sufficient speed that centrifugal force keeps the products along the corresponding chute path.17. A storage receptacle according to claim 16, wherein each loading device comprises a distributing device allowing the product to be injected, depending on its dynamics, at a point closer to or further away from the vertical axis.18. A helical transfer chute conveyor according to claim 1, wherein each of the helical chute paths is equipped with an outer rim, the height of which decreases along the chute path from a top of the conveyor to a bottom of the conveyor.19. A helical distributing chute conveyor for a receptacle for transferring loose varied regularly shaped fragile pharmaceutical or chemical products, this chute conveyor comprising at least one helical chute path developing about a vertical axis, said chute path having an upper side, a back side, a cross-section and a transverse angle of inclination, whereina central volume of the chute conveyor is hollowed out in the form of a well; each chute path is continuous and has substantially constant pitch; each chute path forms a broad plateau, the cross section of which is substantially straight, inclined transversely towards the axis, the transverse angle of inclination of the chute path being such that the transferred regularly shaped fragile pharmaceutical or chemical products, given at the upper part of each helicoid sufficient speed for centrifugal force to keep them along the corresponding chute path, deviate towards the axis when the centrifugal force which holds them on the chute path cancels out or drops below a critical value; each of the helical chute paths includes an outer rim; and wherein the outer rim is pierced with cut-outs, a deflector being placed upstream of each cut-out. 20. A helical distributing chute conveyor for a reseptacle for transferring loose varied regularly shaped fragile pharmaceutical or chemical products, this chute conveyor comprising at least one helical chute path developing about a vertical axis, said chute path having an upper side, a back side, a cross-section and a transverse angle of inclination, whereina central volume of the chute conveyor is hollowed out in the form of a well; each chute path is continuous and has substantially constant pitch; each chute path forms a broad plateau, the cross section of which is substantially straight, inclined transversely towards the axis, the transverse angle of inclination of the chute path being such that the transferred regularly shaped fragile pharmaceutical or chemical products, given at the upper part of each helicoid sufficient speed for centrifugal force to keep them along the corresponding chute path, deviate towards the axis when the centrifugal force which holds them on the chute path cancels out or drops below a critical value; and wherein the chute conveyor further includes a mechanism allowing the transverse inclination of the helicoid chute path to be varied. 21. A helical transfer chute conveyor according to claim 20, wherein the mechanism comprises linkages supporting the helicoid chute paths via articulated links.22. A helical transfer chute conveyor according to claim 20, wherein the mechanism comprises linkages of adjustable length.23. A helical transfer chute conveyor according to claim 20, wherein the transverse inclination of each chute path is greater than or equal to the repose angle of the transported product.24. A helical transfer chute conveyor according to claim 23, wherein the mechanism comprises linkages supporting the helicoid chute paths via articulated links.25. A helical transfer chute conveyor according to claim 24, wherein the mechanism comprises linkages of adjustable length.26. A bottom-emptied storage receptacle which is equipped with a helical chute conveyor according to claim 20.27. A storage receptacle according to claim 26, which comprises at least one loading device which injects transported products almost tangentially to each chute path at an upper part of each helicoid at sufficient speed that centrifugal force keeps the products along the corresponding chute path.28. A storage receptacle according to claim 27, wherein each loading device comprises a distributing device allowing the product to be injected, depending on its dynamics, at a point closer to or further away from the vertical axis.
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