Patent US3221635A successfully refreshed from Google Patents.
US3221635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grease collection device for stoves
Assignee: Individual
•
Filing: 1963-05-31
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Granted: 1965-12-07
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Expires: 1983-05-31
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:03
CPC Classifications
B; B08; B08B; B08B15/00; F; F24; F24C; F24C15/00; F24C15/20; Y; Y10; Y10S; Y10S55/00; Y10S55/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
A VENTILATING SYSTEM FOR REMOVING HEATED AIR, SMOKE, AND FUMES CONTAINING GREASE VAPORS AND OTHER SUSPENDED PARTICULATE MATTER FROM KITCHENS AND THE LIKE, SAID SYSTEMS COMPRISING: A COMBINED ELONGATED COLLECTOR HOUSING AND AN ATTACHED HOOD OF SHEET METAL MATERIAL ADAPTED TO COVER AN AREA ABOVE A SMOKE PRODUCING STOVE OR THE LIKE, SAID HOOD EXTENDING GENERALLY HORIZONTALLY WITH A DOWNWARDLY CURVED OUTER EDGE PORTION ON ONE SIDE, SAID COLLECTOR HOUSING CURVING AROUND IN A HELICAL PATTERN IN CROSS SECTION ON THE OPPOSITE SIDE OF SAID HOOD, THE INSIDE END PORTION OF SAID HOUSING BEING SPACED DOWNWARDLY FROM SAID HOOD TO FORM A LONGITUDINALLY EXTENDING OPENING DIRECTED TANGENTIALLY INTO SAID COLLECTOR HOUSING ALONG ITS UPPER SIDE; END WALL MEANS FOR ENCLOSING THE OPPOSITE ENDS OF SAID COLLECTOR HOUSING; NOZZLE MEANS CONNECTED TO A SUPPLY OF WATER UNDER PRESSURE, MOUNTED IN SAID END WALL MEANS AND EXTENDING GENERALLY AXIALLY WITHIN SAID COLLECTOR FOR
Claim 2
Dependent Claim
151 words
A VENTILATING SYSTEM FOR REMOVING HEATED AIR, SMOKE, AND FUMES CONTAINING GREASE VAPORS AND OTHER SUSPENDED PARTICULATE MATTER FROM KITCHENS AND THE LIKE, SAID SYSTEMS COMPRISING: A COMBINED ELONGATED COLLECTOR HOUSING AND AN ATTACHED HOOD OF SHEET METAL MATERIAL ADAPTED TO COVER AN AREA ABOVE A SMOKE PRODUCING STOVE OR THE LIKE, SAID HOOD EXTENDING GENERALLY HORIZONTALLY WITH A DOWNWARDLY CURVED OUTER EDGE PORTION ON ONE SIDE, SAID COLLECTOR HOUSING CURVING AROUND IN A HELICAL PATTERN IN CROSS SECTION ON THE OPPOSITE SIDE OF SAID HOOD, THE INSIDE END PORTION OF SAID HOUSING BEING SPACED DOWNWARDLY FROM SAID HOOD TO FORM A LONGITUDINALLY EXTENDING OPENING DIRECTED TANGENTIALLY INTO SAID COLLECTOR HOUSING ALONG ITS UPPER SIDE; END WALL MEANS FOR ENCLOSING THE OPPOSITE ENDS OF SAID COLLECTOR HOUSING; NOZZLE MEANS CONNECTED TO A SUPPLY OF WATER UNDER PRESSURE, MOUNTED IN SAID END WALL MEANS AND EXTENDING GENERALLY AXIALLY WITHIN SAID COLLECTOR FOR
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |