发明名称 |
Crucible |
摘要 |
A graphite crucible has a cylindrical body with an upper opening for receiving a sample for analysis and a disk-shaped pedestal base. The pedestal base includes a bottom surface with a centrally formed circular indentation. An inwardly projecting concave arcuate annular indentation extends between the body and pedestal base with a smoothly curved radius of curvature. The upper and lower walls of the arcuate indentation diverge outwardly at an angle of from about 56° to about 60°. |
申请公布号 |
US9527076(B2) |
申请公布日期 |
2016.12.27 |
申请号 |
US201313920600 |
申请日期 |
2013.06.18 |
申请人 |
Leco Corporation |
发明人 |
Wetzel Joshua N.;Ford Gordon C. |
分类号 |
F27B14/06;B01L3/04;F27B14/10 |
主分类号 |
F27B14/06 |
代理机构 |
Price Heneveld LLP |
代理人 |
Price Heneveld LLP |
主权项 |
1. A graphite crucible for use in a resistance analytical furnace comprising:
a generally cylindrical body having a pedestal base and an inwardly concave arcuate annular indentation having a depth of 0.166 inches extending between said body and said base having a smoothly curved radius of curvature of 0.05 inches with upper and lower walls diverging at an angle of from 56° to 60° and wherein said cylindrical body has a cylindrical inner side wall, and said concave floor of said crucible has corners between said inner side wall and said concave floor having a radius of curvature of 0.06 inches; and wherein said pedestal base is generally disk-shaped, wherein said disk-shaped base has a bottom surface which includes a centrally formed circular indentation with a diameter of 0.19 inches and a depth of 0.056 inches, and wherein said cylindrical body has a concave floor having a radius of curvature of 0.35 inches; and said base has a bottom surface, and said lower wall and said bottom of said base form an angle of from 22°-24°. |
地址 |
St. Joseph MI US |