US4030261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic cap for insulation anchor
Assignee: Babcock and Wilcox Co
•
Filing: 1975-04-08
•
Granted: 1977-06-21
•
Expires: 1995-04-08
Abstract
Abstract A pre-burned ceramic cap cooperating with a notched metallic stud to anchor ceramic fiber insulating material in the interior wall of a furnace. The cap is provided with a slotted collar internally of the cap, so that on rotation of the cap surfaces on the collar engage surfaces on a notch to lock the assembly in position and to protect the metallic parts of the assembly from the deteriorating effects of combustion gas contact therewith.
Inventors
- 👤 Bob G. Coleman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:57
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/14; F27D1/144; Y; Y10; Y10S; Y10S411/00; Y10S411/922
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
168 words
An anchor for fiber insulation of a furnace comprising an elongate metallic stud of rectangular cross-section affixed at one end to a furnace wall, the stud having a plurality of notches cut in an opposite end portion thereof, insulating material lining the interior of the furnace and including at least some thickness of resilient ceramic fiber blanket, the length of the stud being less than the thickness of insulating materials lining the furnace, a tubular ceramic cap open and inwardly tapering at one end and having its opposite end enclosed and integrally formed with a refractory flange, the inner wall of the cap being formed with an inwardly extending ceramic collar provided with a slot-like opening of a configuration corresponding to and slightly larger than the cross section of the stud to engage the notches in the stud within the furnace lining and to retain the insulating materials on the wall, whereby the resiliency of the insulating materials forces the cap into the locking engagement with the notches.
Claim 2
Dependent Claim
168 words
An anchor for fiber insulation of a furnace comprising an elongate metallic stud of rectangular cross-section affixed at one end to a furnace wall, the stud having a plurality of notches cut in an opposite end portion thereof, insulating material lining the interior of the furnace and including at least some thickness of resilient ceramic fiber blanket, the length of the stud being less than the thickness of insulating materials lining the furnace, a tubular ceramic cap open and inwardly tapering at one end and having its opposite end enclosed and integrally formed with a refractory flange, the inner wall of the cap being formed with an inwardly extending ceramic collar provided with a slot-like opening of a configuration corresponding to and slightly larger than the cross section of the stud to engage the notches in the stud within the furnace lining and to retain the insulating materials on the wall, whereby the resiliency of the insulating materials forces the cap into the locking engagement with the notches.
Claim 3
Dependent Claim
42 words
An anchor according to claim 1 wherein the notches in the end portion of the metallic stud are formed in pairs on opposite sides of the stud, and each notch has a surface substantially normal to the longitudinal axis of the stud.
Claim 4
Dependent Claim
40 words
An anchor according to claim 2 wherein the collar in the ceramic cap has a thickness less than the longitudinal dimension of a notch, and an inner surface of the collar is normal to the longitudinal axis of the cap.
Claim 5
Dependent Claim
27 words
An anchor according to claim 3 wherein the surface of the notch engages the inner surface of the collar in locking relationship upon rotation of the cap.
Claim 6
Dependent Claim
32 words
An anchor according to claim 1 wherein an inner portion of the cap between the collar and the flange is provided with a plug of ceramic fiber material for heat insulating purposes.
Claim 7
Dependent Claim
54 words
A one-piece, unitary anchor for ceramic fiber comprising a tapered tubular refractory device open at one end and having its opposite end integrally enclosed and formed with an outwardly extending refractory flange, the inner wall adjacent the open end of the device being formed with an inwardly extending ceramic collar providing a slot-like opening.
Claim 8
Dependent Claim
54 words
A one-piece, unitary anchor for ceramic fiber comprising a tapered tubular refractory device open at one end and having its opposite end integrally enclosed and formed with an outwardly extending refractory flange, the inner wall adjacent the open end of the device being formed with an inwardly extending ceramic collar providing a slot-like opening.
Claim 9
Dependent Claim
18 words
An anchor according to claim 6 wherein the tubular refractory device is inwardly tapered at said open end.
References Cited (Backward Citations)
US2021610A
Cited
US2092341A
Cited
US2256961A
Cited
US2389965A
Cited
US2412744A
Cited
US2452173A
Cited
US3356401A
Cited
US3434521A
Cited
US3523395A
Cited
US3738217A
Cited
US3687093A
Cited
US3742670A
Cited
US3829150A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-20 | 1980-12-20 | 1981-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-20 | 1984-12-20 | 1985-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-20 | 1988-12-20 | 1989-06-21 | $7700.00 | Window Closed / Lapsed |