Patent US3299832A successfully refreshed from Google Patents.
US3299832A
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Pumping apparatus
Assignee: FW Milne and Son Pty Ltd
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Filing: 1964-11-09
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Granted: 1967-01-24
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Expires: 1984-11-09
Abstract
No abstract record available.
Inventors
- 👤 Hugh V Milne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:20
CPC Classifications
A; A01; A01C; A01C23/00; A01C23/001; A01C23/002; F; F04; F04B; F04B15/00; F04B15/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A PUMP INCLUDING A TANK TO RECEIVE MATERIAL TO BE PUMPED AN INLET AT THE TOP OF THE TANK, AN OUTLET COMPRISING A PIPE WHICH EXTENDS INTO THE TANK AND TERMINATES ADJACENT THE LOWER SURFACE THEREOF, THE PIPE HAVING A APERTURE ADJACENT THE LOWER END THEREOF, A MOVABLE PLATE POSITIONED OVER THE END OF THE PIE, MEANS TO RECIPROCATE THE PLATE OVER THE APERTURE, AUTOMATIC VALVE MEANS HAVING A VALVE MEMBER ADAPTED TO CLOSE THE INLET, A SOURCE OF HIGH PRESSURE AIR WHICH CAN BE SELECTIVELY APPLIED TO THE TANK, AND MEANS OPERATED BY THE PRESSURE AIR FOR OPERATING THE AUTOMATIC VALVE MEANS WHEREBY THE VALVE MEMBER CLOSES THE INLET AND THE TANK IS PRESSURIZED.
Claim 2
Dependent Claim
115 words
A PUMP INCLUDING A TANK TO RECEIVE MATERIAL TO BE PUMPED AN INLET AT THE TOP OF THE TANK, AN OUTLET COMPRISING A PIPE WHICH EXTENDS INTO THE TANK AND TERMINATES ADJACENT THE LOWER SURFACE THEREOF, THE PIPE HAVING A APERTURE ADJACENT THE LOWER END THEREOF, A MOVABLE PLATE POSITIONED OVER THE END OF THE PIE, MEANS TO RECIPROCATE THE PLATE OVER THE APERTURE, AUTOMATIC VALVE MEANS HAVING A VALVE MEMBER ADAPTED TO CLOSE THE INLET, A SOURCE OF HIGH PRESSURE AIR WHICH CAN BE SELECTIVELY APPLIED TO THE TANK, AND MEANS OPERATED BY THE PRESSURE AIR FOR OPERATING THE AUTOMATIC VALVE MEANS WHEREBY THE VALVE MEMBER CLOSES THE INLET AND THE TANK IS PRESSURIZED.
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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) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |