Patent US3797712A successfully refreshed from Google Patents.
US3797712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compound body nozzle for a container holding a liquid melt
Assignee: Didier Werke AG
•
Filing: 1971-04-07
•
Granted: 1974-03-19
•
Expires: 1991-04-07
Abstract
Abstract A container for a liquid melt has a nozzle with a flow passage. A refractory ceramic material supports the nozzle and an insert of highly wear resistant refractory material limits the flow passage of the nozzle. The insert comprises a shield body or bodies of oxide ceramic or cermet having a thickness of 5% to 20% of the diameter of the flow passage. The flow passage of the shield body is the same or less than the flow passage of the nozzle.
Inventors
- 👤 H Kutzer
- 👤 W Weinreich
- 👤 L Harmsen
- 👤 G Fricke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:00
CPC Classifications
B; B22; B22D; B22D41/00; B22D41/50; C; C04; C04B; C04B35/00; C04B35/01; C04B35/14
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
28 words
A nozzle as claimed in claim 1, wherein said highly wear resistant refractory material is further selected from the group consisting of corundum, zircon and silicate, zircon oxide.
Claim 2
Dependent Claim
13 words
A nozzle as claimed in claim 1, wherein said main component is quartz.
Claim 3
Dependent Claim
140 words
A nozzle for use in a container containing a liquid melt, said nozzle comprising a main component formed of a refractory ceramic material, said main component having a flow passage extending therethrough; and at least one insert attached to said main component and having an opening limiting said flow passage, said insert comprising a shield body formed of a highly wear resistant refractory material selected from the group consisting of a ceramic oxide and cermet, said shield body having a thickness of from 5 to 20% of the diameter of said flow passage, said main component having a ridge extending radially outwardly from said flow passage, said shield body positioned on said ridge and further comprising a holding ring retaining said shield body against said ridge, said holding ring having an interior opening forming a portion of said flow passage.
Claim 4
Dependent Claim
39 words
A nozzle as claimed in claim 4, wherein said at least one insert comprises a plurality of shield bodies spaced within said main component, and further comprising spacer collars having openings therethrough positioned between adjacent of said shield bodies.
Claim 5
Dependent Claim
39 words
A nozzle as claimed in claim 5, wherein said spacer collars are formed of the same material as said main component, and said openings of said spacer collars are the same size as the openings through said shield bodies.
References Cited (Backward Citations)
GB191507731A
Cited
GB224113A
Cited
GB266050A
Cited
GB909458A
Cited
US3428464A
Cited
US3435992A
Cited
DE1905995A1
Cited
US3604598A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |