Patent US3582054A successfully refreshed from Google Patents.
US3582054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace muffle
Assignee: BTU Engineering Corp
•
Filing: 1969-06-04
•
Granted: 1971-06-01
•
Expires: 1989-06-04
Abstract
Abstract A furnace muffle operative to maintain a clean atmosphere over a wide temperature range. The muffle is formed of fused silica with a flat hearth adapted to directly support a moving conveyor. The muffle includes a downwardly extending V-shaped portion formed along the length of the hearth arranged to hold one or more temperature sensing thermocouples with a minimum of lead-length and to collect contaminants in an area removed from workload being processed.
Inventors
- 👤 Jacob Howard Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:27
CPC Classifications
F; F27; F27D; F27D11/00; F27D11/02; F27B; F27B9/00; F27B9/06; F27B9/08; F27B9/082; F27B9/084; F27D3/00; F27D3/12; F27D2003/121; F27D99/00; F27D2099/0085; F27D2099/0093; F27D21/00; F27D21/0014
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
77 words
A muffle for a conveyor furnace comprising: an elongated unitary hollow member formed of fused silica; a hearth integrally formed as the base wall of said member and having substantially flat coplanar surfaces adapted to directly support a moving conveyor thereon; and a section centrally disposed along the length of said hearth between said coplanar surfaces and outwardly extending therefrom, said section being adapted to support one or more thermocouple sensors thereon in efficient thermal sensing position.
Claim 2
Dependent Claim
77 words
A muffle for a conveyor furnace comprising: an elongated unitary hollow member formed of fused silica; a hearth integrally formed as the base wall of said member and having substantially flat coplanar surfaces adapted to directly support a moving conveyor thereon; and a section centrally disposed along the length of said hearth between said coplanar surfaces and outwardly extending therefrom, said section being adapted to support one or more thermocouple sensors thereon in efficient thermal sensing position.
Claim 3
Dependent Claim
50 words
A furnace muffle according to claim 1 wherein said outwardly extending section is adapted to collect along the length thereof contaminants which may be present within said muffle and includes one or more openings disposed in a wall of said section along the length thereof for removal of said contaminants.
Claim 4
Dependent Claim
29 words
A furnace muffle according to claim 1 wherein said outwardly extending section is of generally V-shaped cross section and said unitary hollow member has a substantially uniform wall thickness.
Claim 5
Dependent Claim
38 words
A furnace muffle according to claim 3 wherein a selected outermost region of said outwardly extending section includes a radiation transparent window adapted to transmit thermal energy within said member to a thermocouple sensor disposed adjacent said window.
Claim 6
Dependent Claim
47 words
A furnace muffle according to claim 3 wherein a selected outermost region of said outwardly extending section has a relatively thin wall operative to provide a radiation transparent window for transmission of thermal energy from within said member to a thermocouple sensor disposed adjacent said thin wall.
Claim 7
Dependent Claim
38 words
A furnace muffle according to claim 1 wherein said outwardly extending section includes one or more openings in a wall thereof for support of respective ones of said thermocouple sensors within said section and below said moving conveyor.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |