Patent US4711296A successfully refreshed from Google Patents.
US4711296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for avoiding thermal stresses in glass lined vessels
Assignee: Kennecott Corp
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Filing: 1984-11-05
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Granted: 1987-12-08
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Expires: 2004-11-05
Abstract
Abstract The present invention minimizes the problem of thermal stresses in a glass lined vessel by providing a heat transfer sump in the bottom portion of the vessel. A heat transfer compartment is formed by enclosing the annular space between the exterior portion of the skirt and the bottom portion of the vessel by means of an annular ring. The heat transfer compartment is enclosed by the annular ring, the interior portion of the skirt, and the bottom portion of the vessel. The heat transfer compartment is adapted to receive and hold a heat transfer medium and in this manner form a heat transfer sump.
Inventors
- 👤 Erwin J. Nunlist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:09
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/18; F24H1/181; F24H1/183; B; B01; B01J; B01J2219/00; B01J2219/02; B01J2219/0204; B01J2219/0209; Y; Y10; Y10S; Y10S220/00; Y10S220/917
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
135 words
A vertically arranged cylindrical shaped, glass lined vessel comprising: (a) side and end walls, said side and bottom end walls connected by a knuckle radius; (b) an annular support skirt attached to said side wall contiguous to said knuckle radius and extending downward from and generally aligned with said side wall beyond the contour of the bottom of said vessel, said support skirt having sufficient dimensional stability to support said vessel in a vertical position; (c) a bottom plate attached to the inside of said skirt and connecting to the outside of said bottom portion of said vessel forming an enclosed annular heat transfer compartment surrounding said knuckle radius of said vessel; and (d) a heat transfer medium within said compartment placing the lower portion of said vessel in heat transfer relation to said skirt.
Claim 2
Dependent Claim
135 words
A vertically arranged cylindrical shaped, glass lined vessel comprising: (a) side and end walls, said side and bottom end walls connected by a knuckle radius; (b) an annular support skirt attached to said side wall contiguous to said knuckle radius and extending downward from and generally aligned with said side wall beyond the contour of the bottom of said vessel, said support skirt having sufficient dimensional stability to support said vessel in a vertical position; (c) a bottom plate attached to the inside of said skirt and connecting to the outside of said bottom portion of said vessel forming an enclosed annular heat transfer compartment surrounding said knuckle radius of said vessel; and (d) a heat transfer medium within said compartment placing the lower portion of said vessel in heat transfer relation to said skirt.
Claim 3
Dependent Claim
13 words
The vessel of claim 1 wherein said heat transfer medium is a liquid.
Claim 4
Dependent Claim
17 words
The vessel of claim 1 wherein said skirt is comprised of a mini skirt and an extension.
Claim 5
Dependent Claim
14 words
The vessel of claim 1 wherein the vessel is comprised of a ferrous material.
Claim 6
Dependent Claim
17 words
The vessel of claim 2 wherein said heat transfer medium is circulated through said heat transfer compartment.
Claim 7
Dependent Claim
17 words
The vessel of claim 2 wherein the heat transfer medium is sealed in said heat transfer compartment.
Claim 8
Dependent Claim
16 words
The vessel of claim 2 wherein the heat transfer compartment is connected to a stand pipe.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-07 | 1991-06-08 | 1991-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-07 | 1995-06-08 | 1995-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-07 | 1999-06-08 | 1999-12-08 | $7700.00 | Window Closed / Lapsed |