US3292333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wear-resistant refractory lining article
Assignee: Harbison-Carborundum Corp
•
Filing: 1963-05-01
•
Granted: 1966-12-20
•
Expires: 1983-05-01
Abstract
No abstract record available.
Inventors
- 👤 Karl H Sandmeyer
- 👤 Jr Eugene L O'meara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:27
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/14; F27D1/145; F27D1/147
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
AN ABRASION-RESISTANT ARTICLE WHICH COMPRISES A FUSED CAST REFRACTORY BLOCK HAVING TOP AND BOTTOM SURFACES, SIDE EDGE FACES AND END EDGE FACES, SAID SIDE EDGE FACES BEING PARALLEL AND IN SPACED RELATION AND SAID END EDGE FACES BEING PARALLEL AND IN SPACED RELATION, ONE SET OF SAID EDGE FACES BEING BEVELED AND HAVING, AT THE BASE OF THAT EDGE FACE WHICH THE TOP OF SAID BLOCK OVERHANGS, A RECESS, SAID RECESS EXTENDING INTO SAID BLOCK, HAVING SIDE WALLS, A TOP WALL, AND A REAR WALL, AND A METAL ANCHORING CLIP ADHESIVELY BONDED SOLELY TO SAID REAR WALL OF SAID RECESS, SAID CLIP BEING FREE OF CONTACT WITH THE TOP WALL OF SAID RECESS.
Claim 2
Dependent Claim
113 words
AN ABRASION-RESISTANT ARTICLE WHICH COMPRISES A FUSED CAST REFRACTORY BLOCK HAVING TOP AND BOTTOM SURFACES, SIDE EDGE FACES AND END EDGE FACES, SAID SIDE EDGE FACES BEING PARALLEL AND IN SPACED RELATION AND SAID END EDGE FACES BEING PARALLEL AND IN SPACED RELATION, ONE SET OF SAID EDGE FACES BEING BEVELED AND HAVING, AT THE BASE OF THAT EDGE FACE WHICH THE TOP OF SAID BLOCK OVERHANGS, A RECESS, SAID RECESS EXTENDING INTO SAID BLOCK, HAVING SIDE WALLS, A TOP WALL, AND A REAR WALL, AND A METAL ANCHORING CLIP ADHESIVELY BONDED SOLELY TO SAID REAR WALL OF SAID RECESS, SAID CLIP BEING FREE OF CONTACT WITH THE TOP WALL OF SAID RECESS.
References Cited (Backward Citations)
US283012A
Cited
CA576628A
Cited
US1615750A
Cited
US2056732A
Cited
US2216784A
Cited
US2262973A
Cited
US2251910A
Cited
US2335555A
Cited
US2460052A
Cited
US2433175A
Cited
US2903373A
Cited
US3178492A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |