US3358581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Food warming apparatus
Assignee: Dewey Shepard Boiler Co Inc
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Filing: 1961-06-21
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Granted: 1967-12-19
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Expires: 1981-06-21
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:59
CPC Classifications
A; A47; A47J; A47J39/00; A47J39/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
A STEAMING HEAD ASSEMBLY FOR WARMING FOOD PRODUCTS COMPRISING A VERTICALLY DISPOSED TUBULAR CASING MEMBER HAVING OPEN UPPER AND LOWER ENDS, AN APERTURED PLATE MEMBER EXTENDING ACROSS SAID UPPER END OF SAID CASING MEMBER, A FIRST PLATE MEMBER EXTENDING ACROSS SAID CASING MEMBER SPACED FROM SAID APERTURED PLATE MEMBER AND DEFINING A DRY STEAM CHAMBER THEREWITH, ANOTHER PLATE MEMBER EXTENDING ACROSS SAID CASING MEMBER SPACED FROM SAID FIRST PLATE MEMBER AND DEFINING A STEAM STORAGE CHAMBER THEREWITH, A RAW STEAM INLET CONDUIT EXTENDING THROUGH SAID OTHER PLATE MEMBER FOR INTRODUCING STEAM TO SAID STORAGE CHAMBER FROM A SORUCE OF STEAM SUPPLY, A STEAM OUTLET CONDUIT EXTENDING THROUGH AND ABOVE SAID OTHER PLATE MEMBER AND SPACED FROM SAID RAW STEAM INLET PASSAGE, A DRY STEAM INLET CONDUIT EXTENDING THROUGH BOTH OF SAID PLATE MEMBERS AND SPACED FROM SAID RAW STEAM INLET CONDUIT FOR INTRODUCING DRY STEAM INTO SAID DRY STEAM CHAMBER, A CONTROL VALVE DISPOSED ON THE SIDE OF SAID OTHER POLE MEMBER REMOTE FROM SAID STEAM STORAGE CHAMBER AND CONNECTING SAID STEAM OUTLET CONDUIT
Claim 2
Dependent Claim
174 words
A STEAMING HEAD ASSEMBLY FOR WARMING FOOD PRODUCTS COMPRISING A VERTICALLY DISPOSED TUBULAR CASING MEMBER HAVING OPEN UPPER AND LOWER ENDS, AN APERTURED PLATE MEMBER EXTENDING ACROSS SAID UPPER END OF SAID CASING MEMBER, A FIRST PLATE MEMBER EXTENDING ACROSS SAID CASING MEMBER SPACED FROM SAID APERTURED PLATE MEMBER AND DEFINING A DRY STEAM CHAMBER THEREWITH, ANOTHER PLATE MEMBER EXTENDING ACROSS SAID CASING MEMBER SPACED FROM SAID FIRST PLATE MEMBER AND DEFINING A STEAM STORAGE CHAMBER THEREWITH, A RAW STEAM INLET CONDUIT EXTENDING THROUGH SAID OTHER PLATE MEMBER FOR INTRODUCING STEAM TO SAID STORAGE CHAMBER FROM A SORUCE OF STEAM SUPPLY, A STEAM OUTLET CONDUIT EXTENDING THROUGH AND ABOVE SAID OTHER PLATE MEMBER AND SPACED FROM SAID RAW STEAM INLET PASSAGE, A DRY STEAM INLET CONDUIT EXTENDING THROUGH BOTH OF SAID PLATE MEMBERS AND SPACED FROM SAID RAW STEAM INLET CONDUIT FOR INTRODUCING DRY STEAM INTO SAID DRY STEAM CHAMBER, A CONTROL VALVE DISPOSED ON THE SIDE OF SAID OTHER POLE MEMBER REMOTE FROM SAID STEAM STORAGE CHAMBER AND CONNECTING SAID STEAM OUTLET CONDUIT
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-18 | 1971-06-19 | 1971-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-18 | 1975-06-19 | 1975-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-18 | 1979-06-19 | 1979-12-19 | $7700.00 | Window Closed / Lapsed |