Patent US1636768A successfully refreshed from Google Patents.
Patent US3200835A successfully refreshed from Google Patents.
US3200835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical dissolving and dispensing means
Assignee: WR Grace and Co
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Filing: 1962-08-01
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Granted: 1965-08-17
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Expires: 1982-08-01
Abstract
No abstract record available.
Inventors
- 👤 Robert E Farison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:13
CPC Classifications
B; B01; B01F; B01F25/00; B01F25/30; B01F25/31; B01F25/312; A; A47; A47L; A47L15/00; A47L15/42; A47L15/44; A47L15/4436; B01F21/00; B01F21/20; B01F21/22; B01F25/315; B01F2101/00; B01F2101/4505; Y; Y10; Y10T; Y10T137/00; Y10T137/4891
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A CHEMICAL FEEDER HEAD ADAPTED TO BE THREADED INTO A LID OF A WATERTIGHT SHIPPING CONTAINER, SAID HEAD COMPRISING A PLUG HAVING A THREADED PERIPHERY AND AN ENLARGED CENTRAL OPENING, A SWIVEL SUPPORT MEMBER THREADABLY ENGAGING THE OPENING IN SAID PLUG AND HAVING AN ENLARGED VERTICAL BORE THERETHROUGH, A SWIVEL TUBE DISPOSED WITHIN SAID VERTICAL BORE AND BEING ROTATABLY JOURNALLED THEREIN, A BODY MEMBER FIXEDLY MOUNTED UPON THE UPPER END OF SAID SWIVEL TUBE, SAID BODY MEMBER HAVING TRANVERSE INLET AND OUTLET PORTS, A DEPENDING NOZZLE TUBE CARRIED BY SAID BODY AND EXTENDING DOWNWARDLY THROUGH THE BORE IN SAID SWIVEL TUBE, A RESTRICTED ORIFICE FOR FORMING A HIGH VELOCITY JET FORMED IN THE LOWER END OF SAID
Claim 2
Dependent Claim
117 words
A CHEMICAL FEEDER HEAD ADAPTED TO BE THREADED INTO A LID OF A WATERTIGHT SHIPPING CONTAINER, SAID HEAD COMPRISING A PLUG HAVING A THREADED PERIPHERY AND AN ENLARGED CENTRAL OPENING, A SWIVEL SUPPORT MEMBER THREADABLY ENGAGING THE OPENING IN SAID PLUG AND HAVING AN ENLARGED VERTICAL BORE THERETHROUGH, A SWIVEL TUBE DISPOSED WITHIN SAID VERTICAL BORE AND BEING ROTATABLY JOURNALLED THEREIN, A BODY MEMBER FIXEDLY MOUNTED UPON THE UPPER END OF SAID SWIVEL TUBE, SAID BODY MEMBER HAVING TRANVERSE INLET AND OUTLET PORTS, A DEPENDING NOZZLE TUBE CARRIED BY SAID BODY AND EXTENDING DOWNWARDLY THROUGH THE BORE IN SAID SWIVEL TUBE, A RESTRICTED ORIFICE FOR FORMING A HIGH VELOCITY JET FORMED IN THE LOWER END OF SAID
References Cited (Backward Citations)
US1765062A
Cited
US1930500A
Cited
US2113203A
Cited
US2624619A
Cited
US2982971A
Cited
US3060956A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |