US3295280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace wall anchoring structures
Assignee: S Obermayer Co
•
Filing: 1964-04-09
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Granted: 1967-01-03
•
Expires: 1984-04-09
Abstract
No abstract record available.
Inventors
- 👤 Kay J Kettner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:37
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/14; F27D1/0003; F27D1/0023; F27D1/141; F27D1/142
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
IN A FURNACE OF THE SOAKING PIT TYPE, AND INCLUDING A MONOLITHIC PLASTIC REFRACTORY WALL AND A METALLIC SHELL RETAINING SAID WALL, THE IMPROVEMENT COMPRISING RESILIENT ANCHOR MEANS CONNECTING SAID WALL WITH SAID SHELL FOR MAINTAINING SAID WALL AND SAID SHELL COUPLED IN STRESSED AND YIELDABLE RELATION, SAID RESILIENT ANCHOR MEANS INCLUDING AN ANCHOR MEMBER AND A COOPERATING SPRING MEANS RESILIENTLY URGING SAID WALL AND SAID SHELL TOWARD EACH OTHER.
Claim 2
Dependent Claim
70 words
IN A FURNACE OF THE SOAKING PIT TYPE, AND INCLUDING A MONOLITHIC PLASTIC REFRACTORY WALL AND A METALLIC SHELL RETAINING SAID WALL, THE IMPROVEMENT COMPRISING RESILIENT ANCHOR MEANS CONNECTING SAID WALL WITH SAID SHELL FOR MAINTAINING SAID WALL AND SAID SHELL COUPLED IN STRESSED AND YIELDABLE RELATION, SAID RESILIENT ANCHOR MEANS INCLUDING AN ANCHOR MEMBER AND A COOPERATING SPRING MEANS RESILIENTLY URGING SAID WALL AND SAID SHELL TOWARD EACH OTHER.
References Cited (Backward Citations)
US1617555A
Cited
US1807868A
Cited
US1736704A
Cited
US1783383A
Cited
US1910160A
Cited
US1928313A
Cited
US1941492A
Cited
US2011312A
Cited
US2689987A
Cited
US2854842A
Cited
US3203376A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |