Patent US4704931A successfully refreshed from Google Patents.
Patent US4427378A successfully refreshed from Google Patents.
US4427378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure and seal construction for high-pressure oxidation furnace and the like
Assignee: GaSonics Inc
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Filing: 1982-03-29
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Granted: 1984-01-24
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Expires: 2002-03-29
Abstract
Abstract A closure and seal construction for a high-pressure oxidation furnace and the like having a quartz chamber and an integral quartz wall formed with an opening for receiving into the chamber material to be processed, the wall providing an annular surface surrounding the opening and being formed with an annular recess in the surface surrounding the opening; a combined cooling and sealing tube mounted in the recess and protruding slightly therefrom; a closure mounted for engagement with the tube and wall surface; and the tube having an elasticity responsive to a closing pressure to resiliently retract and provide simultaneous sealing engagement of the closure with the wall surface and tube.
Inventors
- 👤 Gerald M. Bowers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:11
CPC Classifications
F; F26; F26B; F26B25/00; F26B25/06; F26B25/08; F26B25/12; F27; F27B; F27B17/00; F27D; F27D1/00; F27D1/18
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
157 words
A closure and seal construction for a high pressure oxidation furnace and the like having a quartz chamber and integral quartz wall formed with an opening for receiving into said chamber of material to be processed, said wall being formed with an annular recess surrounding said opening; a tube mounted in said recess and comprising an interior metallic wall providing thermal conductivity and an elastomeric coating providing elasticity and dimensioned for protrusion of said coating from said recess and being adapted for connection to a source of coolant and for conduction of said coolant therethrough; a closure and mounting means therefor juxtaposing said closure and wall and tube in covering relation to said opening and applying a closing pressure urging said closure toward said wall and tube, said closure having a flat annular surface confronting said wall and engageable with and compressing said coating; and said coating being responsive to said clsoing pressure to seal said opening.
Claim 2
Dependent Claim
157 words
A closure and seal construction for a high pressure oxidation furnace and the like having a quartz chamber and integral quartz wall formed with an opening for receiving into said chamber of material to be processed, said wall being formed with an annular recess surrounding said opening; a tube mounted in said recess and comprising an interior metallic wall providing thermal conductivity and an elastomeric coating providing elasticity and dimensioned for protrusion of said coating from said recess and being adapted for connection to a source of coolant and for conduction of said coolant therethrough; a closure and mounting means therefor juxtaposing said closure and wall and tube in covering relation to said opening and applying a closing pressure urging said closure toward said wall and tube, said closure having a flat annular surface confronting said wall and engageable with and compressing said coating; and said coating being responsive to said clsoing pressure to seal said opening.
Claim 3
Dependent Claim
73 words
The apparatus of claim 1, said chamber being of generally cylindrical form and said wall having an annular planar surface disposed in a plane substantially perpendicular to the axis of said chamber, and said recess being formed to open in an axial direction; and said closure surface being formed to simultaneously compress said elastomeric coating and to mate with said wall surface; said wall and closure surfaces being polished to effect sealing contact.
Claim 4
Dependent Claim
30 words
The apparatus of claim 2, said wall comprising an annulus substantially concentric to said axis and said recess being positioned at the outer periphery of said annulus confronting said closure.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-23 | 1987-07-25 | 1988-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-23 | 1991-07-25 | 1992-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-23 | 1995-07-25 | 1996-01-24 | $7700.00 | Window Closed / Lapsed |