Fuel property determination method and fuel property determination device
US-9523668-B2 · Dec 20, 2016 · US
Electrode for resistance furnace
US10209230B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10209230-B2 |
| Application number | US-201514692091-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 21, 2015 |
| Priority date | Feb 18, 2011 |
| Publication date | Feb 19, 2019 |
| Grant date | Feb 19, 2019 |
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Abstract
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An electrode for a resistance analytical furnace has a central opening including a crucible-engaging surface and an annular flange spaced from the crucible-engaging surface. The flange has a lower surface with a plurality of grooves formed therein. The grooves are curved and extend from the central opening of the edge of the flange.
First claim
Opening claim text (preview).
The invention claimed is: 1. An electrode for an analytical resistance furnace comprising: a generally cylindrical electrode body having a centrally and axially-extending cylindrical opening having an enlarged lower end for receiving a crucible, the generally cylindrical electrode body of said electrode having an annular flange at said enlarged lower end, said annular flange having a diameter greater than the diameter of said electrode body and having a lower surface and further including a crucible-engaging contact in said enlarged lower end and spaced from said lower surface, wherein said crucible-engaging contact is made of tungsten carbide; and a plurality of radially and outwardly extending grooves formed in said lower surface of said annular flange, wherein said plurality of radially and outwardly extending grooves increase in size in a radially outward direction. 2. The electrode as defined in claim 1 wherein said plurality of radially and outwardly extending grooves extend tangentially from said centrally and axially extending cylindrical opening to an outer edge of said annular flange. 3. The electrode as defined in claim 1 wherein said generally cylindrical electrode body includes a plurality of cooling grooves formed in an outer surface of said generally cylindrical electrode body. 4. An electrode for an analytical resistance furnace comprising: a generally cylindrical electrode body having a centrally and axially-extending cylindrical opening having an enlarged lower end for receiving a crucible, the generally cylindrical electrode body of said electrode having an annular flange at said enlarged lower end, said annular flange having a diameter greater than the diameter of said electrode body and having a lower surface and further including a crucible-engaging contact in said enlarged lower end and spaced from said lower surface, wherein said crucible-engaging contact is made of tungsten carbide; and a plurality of radially and outwardly extending grooves formed in said lower surface of said annular flange, wherein said plurality of radially and outwardly extending grooves are helical and increase in depth in a radially outward direction from said centrally and axially-extending cylindrical opening from about 0.1 inch to about 0.275 inch.
Assignees
Inventors
Classifications
- G01N31/12Primary
using combustion (G01N25/20 takes precedence) · CPC title
Heating elements specially adapted for furnaces (H05B3/60 takes precedence; arrangements of elements for electric heating in or on furnaces using ohmic resistance heating F27D11/02) · CPC title
specially designed for laboratory use · CPC title
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- What does patent US10209230B2 cover?
- An electrode for a resistance analytical furnace has a central opening including a crucible-engaging surface and an annular flange spaced from the crucible-engaging surface. The flange has a lower surface with a plurality of grooves formed therein. The grooves are curved and extend from the central opening of the edge of the flange.
- Who is the assignee on this patent?
- Leco Corp
- What technology area does this patent fall under?
- Primary CPC classification G01N31/12. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Feb 19 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).