US3605786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Evacuator
Assignee: PULLMAN-HOLT Corp 10702 46TH STREET TAMPA FL 33617 A CORP OF
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Filing: 1969-09-10
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Granted: 1971-09-20
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Expires: 1989-09-10
Abstract
Abstract A TANK TYPE EVACUATOR USEABLE FOR SUCH PURPOSES AS SUCTION REMOVAL OF LIQUIDS FROM SURFACES WITH LIQUID ACCUMULATION IN A RECEPTACLE, OBVIATES THE USUAL LIQUID DUMPING MANIPULATIONS AND OTHER REQUIREMENTS BY ALTERNATELY EVACUATING THE RECEPTACLE ATMOSPHERE TO INDUCE WET INFLOW AS FROM A CONDUIT CONNECTIBLE TO AN OPENING LEADING FROM THE RECEPTACLE, AND PRESSURIZING THE RECEPTACLE TO EXPEL LIQUID THROUGH THE SAME OPENING, EVACUATION AND PRESSURIZING OF THE RECEPTACLE REQUIRING BUT A SINGLE BLOWER UNIT OPERATION IN CONJUCTION WITH AIR FLOW CONTROL VALVING ASSOCIATED WITH THE EVACUATOR COVER AND RECEPTACLE SECTIONS.
Inventors
- 👤 Edwin J Machin Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:10
CPC Classifications
A; A47; A47L; A47L7/00; A47L7/0004; A47L7/0023; A47L7/0028; A47L7/0038; A47L7/0042; Y; Y10; Y10S; Y10S55/00; Y10S55/03; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3109; Y10T137/3115; Y10T137/3127
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |