IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
|
출원번호 |
US-0571524
(2000-05-16)
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발명자
/ 주소 |
- Bockheim, Robert J
- Brenner, Peggy M
- Corbat, Scott G
- Ensing, Kent L
- Pike, Chris A
- Schad, Tim O
- Chesser, Lynda E
- Schacht, Bill F
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출원인 / 주소 |
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대리인 / 주소 |
Van Dyke, Gardner, Linn & Burkhart, LLP
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인용정보 |
피인용 횟수 :
32 인용 특허 :
19 |
초록
▼
An articulating table comprises a pedestal, a pivot, and a table top having first and second top portions. The top portions are connected with the pedestal by the pivot for horizontal pivotal movement between open and closed positions relative to each other. The top portions are substantially juxtap
An articulating table comprises a pedestal, a pivot, and a table top having first and second top portions. The top portions are connected with the pedestal by the pivot for horizontal pivotal movement between open and closed positions relative to each other. The top portions are substantially juxtaposed in the closed position and are separated in a V-shape in the open position. A light supporting spine extends between the top portions. Conduit channels mounted at inner edges of the top portions provide electrical, optical, pneumatic, or hydraulic service to terminals positioned along the inner edges of the top portions. The channels can have openable top and rear access covers. A conduit channel also can extend through at least a portion of the spine. Fixed position table tops can be positioned on the pedestal at either or both ends of the articulating top portions.
대표청구항
▼
An articulating table comprises a pedestal, a pivot, and a table top having first and second top portions. The top portions are connected with the pedestal by the pivot for horizontal pivotal movement between open and closed positions relative to each other. The top portions are substantially juxtap
An articulating table comprises a pedestal, a pivot, and a table top having first and second top portions. The top portions are connected with the pedestal by the pivot for horizontal pivotal movement between open and closed positions relative to each other. The top portions are substantially juxtaposed in the closed position and are separated in a V-shape in the open position. A light supporting spine extends between the top portions. Conduit channels mounted at inner edges of the top portions provide electrical, optical, pneumatic, or hydraulic service to terminals positioned along the inner edges of the top portions. The channels can have openable top and rear access covers. A conduit channel also can extend through at least a portion of the spine. Fixed position table tops can be positioned on the pedestal at either or both ends of the articulating top portions. herein the first cast iron material comprises one of a chilled cast iron material or a shell chilled cast iron material. 3. The group of rolls of claim 1 wherein the second cast iron material comprises one of a chilled cast iron material, a shell chilled cast iron material, or a cast iron material comprising one or more of a lamellar, vermicular, or spheroidal graphite. 4. The group of rolls of claim 1 wherein the second roll is configured to include a resilient cover. 5. The groups of rolls of claim 4 wherein the resilient cover has a thickness of between 10 mm and 30 mm. 6. The group of rolls of claim 1 wherein the diameter of the central bore of the second roll body is determined by a bore diameter equation defined as: bore diameter=(D4-G×KG/(f×E))1/4, with: G=weight of the roll body (N) in the region of the web length L, E=modulus of elasticity (N/m2), D=outer diameter (m) of the roll body, f=intended sag (m), substantially equal to sag fref,and KG=group constant (m3) from the following equation: KG=(5/(6×π))×L3×(1+2.4×(LM-L)/L+2×(Dref/L)2), with: π=circular constant (3.14159 . . . ), L=web length of the roll group (m), LM=bearing-center spacing of the roll group (m), and Dref=diameter of the reference roll (m). 7. The group of rolls of claim 1 wherein the second roll body includes at least one peripheral bore through which a liquid or condensable gaseous heat-transfer medium can be passed for heating, cooling or temperature control; and the finished central bore diameter of the second roll body is determined based on the dead weight G of the second roll body and the modulus of elasticity E of the second roll body such that the sag f of the second roll is approximately equal to the sag frefof the reference roll. 8. The group of rolls of claim 4 wherein the finished diameter of the central bore of the second roll body is determined by a bore diameter equation defined as: bore diameter=(D4-ZP×DP2×(DP2+2×TP2)-G×KG/(f×E))1/4, with: ZP=number of peripheral bores, DP=diameter (m) of the peripheral bores, TP=pitch circle (m) of the peripheral bores, G=weight of the roll body (N) in the region of the web length L, E=modulus of elasticity (N/m2), D=outer diameter (m) of the roll body, f=intended sag (m), substantially equal to sagfref,and KG=group constant (m3) from the following equation: KG=(5/6×π))×L3×(1+2.4×(LM-L)/L+2×(Dref/L)2), with: π=circular constant (3.14159 . . . ), L=web length of the roll group (m), LM=bearing-center spacing of the roll group (m), and Dref=diameter of the reference roll (m). 9. The group of rolls of claim 8 wherein the second roll is configured to include a resilient cover. 10. The groups of rolls of claim 9 wherein the resilient cover has a thickness of between 10 mm and 30 mm. 11. The group of rolls of claim 1 wherein the dead weight G of the second roll body without the bolted-on journal approximately satisfies the following equation in the region of the web length L: G=Gref×E×J×f/(Eref×Jref×fref), with: Gref=weight of the reference roll body (N) without journals in the region of the web length L, Eref=modulus of elasticity of the reference roll body (N/m3), Jref=moment of inertia of the cross section of the reference roll body (m4), fref=sag of the reference roll (m), E=modulus of elasticity (N/m2), J=moment of inertia of the roll cross section (m4), and f=intended sag (m). 12. The group of rolls of claim 1 w herein the first cast iron material does not comprise chilled-cast iron or shell-chilled cast iron. 13. The group of rolls of claim 1 wherein: the second roll comprises a polymer roll; the first sag of the reference roll has a first sag value at a low operating temperature and a second sag value at a high operating temperature; the second sag of the second roll has a first sag value at the low operating temperature and a second sag value at the high operating temperature; and the bore diameter of the second roll is selected based on a ratio of the first sag value of the reference roll to the first sag value of the polymer roll being approximately equal to a ratio of the second sag value of the polymer roll to the second sag value of the reference roll. 14. The group of rolls of claim 1 wherein the at least one of the reference roll and the second roll includes a displacement body in the central bore such that a heat-transfer medium can flow between the displacement body and the central bore. 15. The group of rolls of claim 1 wherein an outer diameter of the reference roll and an outer diameter of the second roll are essentially equal to one another. 16. The group of rolls of claim 1 wherein the weight of at least one of the reference roll and the second roll is reduced by at least one additional axial bore that is arranged in proximity to a neutral fiber of the roll wall. 17. The group of rolls of claim 16 wherein one or more of the central bore and the at least one additional axial bore are partially or wholly filled with a ballast material. 18. The group of rolls of claim 17 wherein the ballast material comprises a granular material. 19. The group of rolls of claim 17 wherein the ballast material comprises water. 20. A method of producing a group of rolls for processing material webs, the group of rolls including at least two equally flexible rolls, the method comprising: providing a reference roll comprising a reference roll body, at least one bolted-on journal, and a central bore; and providing a second roll comprising a second roll body, at least one bolted-on journal, and a central bore, wherein: the group of rolls are mounted in rolling-contact bearings in the region of the journals, the reference roll comprises a first cast iron material and the second roll comprises a second cast iron material, each of the reference roll body and the second roll body has a diameter that is greater than 500 millimeters, each of the reference roll and the second roll has a ratio between a web length and a diameter that is greater than seven, the central bore of the reference roll has a diameter such that the wall thickness of the reference roll is between approximately 100 millimeters and 300 millimeters, a first vertical sag frefis defined as comprising a vertical deflection of an axis of the reference roll under the influence of gravity, wherein the first vertical sag is between 0.1 millimeters and 0.2 millimeters per meter of the web length when the reference roll body is supported in the rolling-contact bearings, a second vertical sag f is defined as comprising a vertical deflection of an axis of the second roll; and providing the central bore of the second roll with a diameter determined on the basis of the dead weight of the second roll in the region of the web length and the mean modulus of elasticity of the second roll such that the sag f of the second roll is approximately equal to the sag frefof the reference roll. 21. The method of claim 20 wherein the diameter of the central bore of the second roll body is determined by a bore diameter equation defined as: bore diameter=(D4-G×KG/(f×E))1/4, with: G=weight of the roll body (N) in the region of the web length L, E=modulus of elasticity (N/m2), D=outer diameter (m) of the roll body, f=intended sag (m), substantially equal to sag fref,and KG=group constant (m<
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