US3372473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fabricating percolator vessel and pump constructions
Assignee: Westinghouse Electric Corp
•
Filing: 1965-03-31
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Granted: 1968-03-12
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Expires: 1985-03-31
Abstract
No abstract record available.
Inventors
- 👤 David B Price
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:24
CPC Classifications
A; A47; A47J; A47J31/00; A47J31/04; A47J31/053; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49083; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49917; Y10T29/49918
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
METHOD OF FABRICATING PERCOLATOR VESSEL AND PUMP CONSTRUCTIONS COMPRISING THE STEP OF: SIMULTANEOUSLY FORMING A CYLINDRICAL VESSEL HAVING A CLOSED BOTTOM END, A WALL IN SAID BOTTOM END, AN ANNULAR GROOVE IN ONE END OF SAID WALL AND A PUMP WELL CHAMBER IN THE END OF SAID WALL OPPOSITE THE END HAVING SAID GROOVE CUTTING AWAY WALL MATERIAL BETWEEN THE ANNULAR GROOVE AND THE BOTTOM OF SAID VESSEL TO FORM A CHANNEL WHEREBY THE HEAT WILL NECESSARILY BE DIRECTED TO THE PUMP CHAMBER AND PLACING A HEATING ELEMENT IN SAID ANNULAR GROOVE AND BENDING ONE OF THE WALLS FORMING SAID GROOVE OVER SAID HEATING ELEMENT.
Claim 2
Dependent Claim
105 words
METHOD OF FABRICATING PERCOLATOR VESSEL AND PUMP CONSTRUCTIONS COMPRISING THE STEP OF: SIMULTANEOUSLY FORMING A CYLINDRICAL VESSEL HAVING A CLOSED BOTTOM END, A WALL IN SAID BOTTOM END, AN ANNULAR GROOVE IN ONE END OF SAID WALL AND A PUMP WELL CHAMBER IN THE END OF SAID WALL OPPOSITE THE END HAVING SAID GROOVE CUTTING AWAY WALL MATERIAL BETWEEN THE ANNULAR GROOVE AND THE BOTTOM OF SAID VESSEL TO FORM A CHANNEL WHEREBY THE HEAT WILL NECESSARILY BE DIRECTED TO THE PUMP CHAMBER AND PLACING A HEATING ELEMENT IN SAID ANNULAR GROOVE AND BENDING ONE OF THE WALLS FORMING SAID GROOVE OVER SAID HEATING ELEMENT.
References Cited (Backward Citations)
US821124A
Cited
FR23765E
Cited
GB482544A
Cited
US2726607A
Cited
GB720939A
Cited
US2826670A
Cited
US2875312A
Cited
US3110796A
Cited
US3300080A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |