US3203738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pumps
Assignee: Vinters Armstrongs Ltd
•
Filing: 1963-03-14
•
Granted: 1965-08-31
•
Expires: 1983-03-14
Abstract
No abstract record available.
Inventors
- 👤 Forsyth George Howard
- 👤 Taylor Joseph Hendrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:53
CPC Classifications
B; B65; B65G; B65G53/00; B65G53/34; B65G53/40; B65G53/46; B65G53/4608; B65G53/4616; B65G53/4666
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
A PUMP FOR PUMPING POWDERED MATERIAL COMPRISING: A CASING HAVING A FIRST PART DEFINING AN INLET CHAMBER FOR RECIVING POWDERED MATERIAL, A SECOND PART DEFINING AN OUTLET CHAMBER THROUGH WHICH POWDERED MATERIAL IS DISCHARGED, AND A THIRD PART DEFINING A FURTHER CHAMBER, A ROTOR DISPOSED WITHIN SAID FURTHER CHAMBER AND HAVING VANES EXTENDING RADIALLY OF A VERTICAL AXIS ABOUT WHICH THE ROTOR IS ARRANGED TO ROTATE, MEANS ASSOCIATED WITH EACH OF THE INLET AND OUTLET CHAMBERS FOR FLUIDIZING POWDERED MATERIAL THEREIN, SAID INLET CHAMBER COMMUNICATING WITH THE FURTHER CHAMBER AT A FIRST LOCATION AROUND SAID AXIS SO THAT FLUIDIZED POWDERED MATERIAL IN THE INLET CHAMBER CAN FLOW INTO THE SPACES BETWEEN THE VANES OF THE ROTOR THAT ARE AT SAID FIRST LOCATION AND THE OUTLET CHAMBER COMMUNICATING WITH SAID FURTHER CHAMBER AT A SECOND LOCATION SPACED AROUND SAID AXIS FROM SAID FIRST LOCATION, SAID INLET CHAMBER BEING ELONGATED IN THE DIRECTION OF THE AXIS OF SAID ROTOR AND EXTENDING ABOVE AND
Claim 2
Dependent Claim
161 words
A PUMP FOR PUMPING POWDERED MATERIAL COMPRISING: A CASING HAVING A FIRST PART DEFINING AN INLET CHAMBER FOR RECIVING POWDERED MATERIAL, A SECOND PART DEFINING AN OUTLET CHAMBER THROUGH WHICH POWDERED MATERIAL IS DISCHARGED, AND A THIRD PART DEFINING A FURTHER CHAMBER, A ROTOR DISPOSED WITHIN SAID FURTHER CHAMBER AND HAVING VANES EXTENDING RADIALLY OF A VERTICAL AXIS ABOUT WHICH THE ROTOR IS ARRANGED TO ROTATE, MEANS ASSOCIATED WITH EACH OF THE INLET AND OUTLET CHAMBERS FOR FLUIDIZING POWDERED MATERIAL THEREIN, SAID INLET CHAMBER COMMUNICATING WITH THE FURTHER CHAMBER AT A FIRST LOCATION AROUND SAID AXIS SO THAT FLUIDIZED POWDERED MATERIAL IN THE INLET CHAMBER CAN FLOW INTO THE SPACES BETWEEN THE VANES OF THE ROTOR THAT ARE AT SAID FIRST LOCATION AND THE OUTLET CHAMBER COMMUNICATING WITH SAID FURTHER CHAMBER AT A SECOND LOCATION SPACED AROUND SAID AXIS FROM SAID FIRST LOCATION, SAID INLET CHAMBER BEING ELONGATED IN THE DIRECTION OF THE AXIS OF SAID ROTOR AND EXTENDING ABOVE AND
References Cited (Backward Citations)
US2675676A
Cited
US941024A
Cited
US2011133A
Cited
US2489925A
Cited
US2680683A
Cited
US2740672A
Cited
US2858212A
Cited
GB796719A
Cited
US2879922A
Cited
US2921721A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |