US3234899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boiler construction
Assignee: Marley Wylain Co LLC
•
Filing: 1963-08-09
•
Granted: 1966-02-15
•
Expires: 1983-08-09
Abstract
No abstract record available.
Inventors
- 👤 Johannes G Mueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:30
CPC Classifications
F; F23; F23M; F23M11/00; F23M11/04; F23M11/042; F24; F24H; F24H9/00; F24H9/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
IN APPARATUS FOR SEALING A PRESSURE RELIEF OPENING TO A BOILER OR THE LIKE, THE COMBINATION WHICH COMPRISES A PRESSURE RELIEF PLATE ADAPTED TO BE MOUNTED ADJACENT THE PRESSURE RELIEF OPENIONG AND HAVING AN OBSERVATION PORT, AND SPRING-LOADED MEANS FOR ROTATABLY ALINING THE RELIEF PLATE OBSERVATION PORT WITH THE RELIEF OPENING AND FOR RESILIENTLY SEATING THE RELIEF PLATE IS SEALING RELATIONSHIP WITH THE BOILER SO THAT THE RELIEF OPENING IS SEALED AND THE RELIEF PLATE IS FREE TO BE DRIVEN AWAY FROM THE BOILER WHEN THE INTERNAL FIREBOX PRESSURE EXCEEDS A DESIRED LEVEL AND WHEN SAID CENTRAL PORT AND SAID OBSERVATION PORT ARE OUT OF ALINEMENT, THE OBSERVATION PORT ALLOWING FOR VISUAL INSPECTION OF THE BOILER INTERIOR WHEN SAID CENTRAL PORT AND SAID OBSERVATION PORT ARE IN ALINEMENT.
Claim 2
Dependent Claim
128 words
IN APPARATUS FOR SEALING A PRESSURE RELIEF OPENING TO A BOILER OR THE LIKE, THE COMBINATION WHICH COMPRISES A PRESSURE RELIEF PLATE ADAPTED TO BE MOUNTED ADJACENT THE PRESSURE RELIEF OPENIONG AND HAVING AN OBSERVATION PORT, AND SPRING-LOADED MEANS FOR ROTATABLY ALINING THE RELIEF PLATE OBSERVATION PORT WITH THE RELIEF OPENING AND FOR RESILIENTLY SEATING THE RELIEF PLATE IS SEALING RELATIONSHIP WITH THE BOILER SO THAT THE RELIEF OPENING IS SEALED AND THE RELIEF PLATE IS FREE TO BE DRIVEN AWAY FROM THE BOILER WHEN THE INTERNAL FIREBOX PRESSURE EXCEEDS A DESIRED LEVEL AND WHEN SAID CENTRAL PORT AND SAID OBSERVATION PORT ARE OUT OF ALINEMENT, THE OBSERVATION PORT ALLOWING FOR VISUAL INSPECTION OF THE BOILER INTERIOR WHEN SAID CENTRAL PORT AND SAID OBSERVATION PORT ARE IN ALINEMENT.
References Cited (Backward Citations)
US3123454A
Cited
US773152A
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US1656677A
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US1588789A
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US1737732A
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US1887654A
Cited
US1934438A
Cited
US2623482A
Cited
US2835230A
Cited
US3055321A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |