Claims
- 1. A furnace having upstream and downstream air flow directions and being for use in analyzing materials, said furnace comprising:
- an enclosure;
- a support within said enclosure for supporting a sample including combustible and uncombustible material;
- a first heater element adjacent said support for initial combustion of the combustible material of the sample;
- means disposed downstream of said first heater element for inhibiting the flow out of said furnace of uncombusted products of the combustible material of the sample while permitting the flow of exhaust gases through said means and out of said furnace;
- a second heater element adjacent said means for secondary combustion of the uncombusted products the flow of which is inhibited by said means; and
- a weight indicating device supporting said support, the sample thereby being able to be weighed before and after initial combustion of the combustible material thereof.
- 2. The furnace of claim 1 wherein said means comprises at least one filter.
- 3. The furnace of claim 1 wherein said means comprises a pair of filters, one of said pair of filters being a course filter and the other of said pair of filters being a fine filter.
Parent Case Info
This is a request for filing, under 37 CFR .sctn. 1.53(b), a(n): Continuation of prior application Ser. No. 08/688,813, filed on Jul. 31, 1996, which is a continuation of U.S. Ser. No. 08/355,914 filed Dec. 14, 1994, now U.S. Pat. No. 5,558,029 issued Sep. 24, 1996.
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Continuations (2)
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Number |
Date |
Country |
Parent |
688813 |
Jul 1996 |
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Parent |
355914 |
Dec 1994 |
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