US3211101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pumps
Assignee: Abrasive Developments Ltd
•
Filing: 1964-02-28
•
Granted: 1965-10-12
•
Expires: 1984-02-28
Abstract
No abstract record available.
Inventors
- 👤 Ashworth Stewart Ives
- 👤 Field Anthony Gerard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:06
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/08; F04D29/10; F04D29/106; F04D29/108; F04D29/40; F04D29/42; F04D29/426; F04D29/4286; F04D7/00; F04D7/02; F04D7/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A PUMP COMPRISING, AN IMPELLER HOUSING HAVING A CENTRAL INLET AND A PERIPHERAL OUTLET BUT BEING OTHERWISE CLOSED, A VORTEX CHAMBER HAVING A PERIPHERAL INLET AND AN OUTLET, MEANS FOR CONNECTING THE OUTLET OF THE IMPELLER HOUSING TO THE INLET OF THE VORTEX CHAMBER, AN IMPELLER ROTATABLE IN THE HOUSING TO DRAW LIQUID THROUGH THE HOUSING INLET AND DELIVER IT THROUGH THE HOUSING OUTLET TO SAID CONNECTING MEANS AND IMPELLER SHAFT SECURED TO THE IMPELLER AND EXTENDING THEREFROM THROUGH AND APERTURE IN THE WALL OF THE HOUSING AND THROUGH THE CENTER OF THE VORTEX CHAMBER, AND A SLEEVE SURROUNDING THE SHAFT WITH CLEARANCE AND SECURED AT ONE END TO THE IMPELLER HOUSING AROUND SAID APERTURE AND OPENING AT THE OTHER END IN THE VORTEX CHAMBER CENTRALLY THEREOF AND IN A POSITION SUCH THAT LIQUID FLOWS FROM THE CENTRE OF THE VORTEX ALONG THE SLEEVE INTO THE IMPELLER HOUSING FORMING A LIQUID SEAL BETWEEN THE SHAFT AND THE SLEEVE.
Claim 2
Dependent Claim
158 words
A PUMP COMPRISING, AN IMPELLER HOUSING HAVING A CENTRAL INLET AND A PERIPHERAL OUTLET BUT BEING OTHERWISE CLOSED, A VORTEX CHAMBER HAVING A PERIPHERAL INLET AND AN OUTLET, MEANS FOR CONNECTING THE OUTLET OF THE IMPELLER HOUSING TO THE INLET OF THE VORTEX CHAMBER, AN IMPELLER ROTATABLE IN THE HOUSING TO DRAW LIQUID THROUGH THE HOUSING INLET AND DELIVER IT THROUGH THE HOUSING OUTLET TO SAID CONNECTING MEANS AND IMPELLER SHAFT SECURED TO THE IMPELLER AND EXTENDING THEREFROM THROUGH AND APERTURE IN THE WALL OF THE HOUSING AND THROUGH THE CENTER OF THE VORTEX CHAMBER, AND A SLEEVE SURROUNDING THE SHAFT WITH CLEARANCE AND SECURED AT ONE END TO THE IMPELLER HOUSING AROUND SAID APERTURE AND OPENING AT THE OTHER END IN THE VORTEX CHAMBER CENTRALLY THEREOF AND IN A POSITION SUCH THAT LIQUID FLOWS FROM THE CENTRE OF THE VORTEX ALONG THE SLEEVE INTO THE IMPELLER HOUSING FORMING A LIQUID SEAL BETWEEN THE SHAFT AND THE SLEEVE.
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) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |