US3236248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tank washing system and control apparatus
Assignee: Paul Mueller Co
•
Filing: 1963-03-15
•
Granted: 1966-02-22
•
Expires: 1983-03-15
Abstract
No abstract record available.
Inventors
- 👤 Ray Leroy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:08
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/08; B08B9/093
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN A WASHING APPARATUS FOR USE IN WASHING A TANK: A WATER CONDUIT CONNECTIBLE INTO THE TANK; A DRAIN FOR THE TANK HAVING A HYDRAULICALLY-OPERATED DRAIN VALVE CLOSED IN RESPONSE TO EXISTANCE OF HYDRAULIC PRESSURE AND OPENED UPON RELIEF THEREOF; A CUT-OFF VALVE IN THE WATER CONDUIT, A THREE-WAY VALVE UPSTREAM OF THE CUT-OFF VALVE, THE THREEWAY VALVE BEING NORMALLYPOSITIONED TO ADMIT WATER UNDER PRESSURE TO THE HYDRAULICALLY-OPERATED VALVE TO CLOSE THE SAME; MEANS TO SHIFT THE THREE-WAY VALVE TO A POSITION TO EXHAUST SAID HYDRAULIC PRESSURE; AND MEANS TO OPEN AND CLOSE THE CUT-OFF VALVE; THE UPSTREAM DISPOSITION OF THE THREE-WAY VALVE ASSURING NORMAL CLOSING OF THE DRAIN VALVE REGARDLESS OF THE POSITION OF THE CUT-OFF VALVE.
Claim 2
Dependent Claim
118 words
IN A WASHING APPARATUS FOR USE IN WASHING A TANK: A WATER CONDUIT CONNECTIBLE INTO THE TANK; A DRAIN FOR THE TANK HAVING A HYDRAULICALLY-OPERATED DRAIN VALVE CLOSED IN RESPONSE TO EXISTANCE OF HYDRAULIC PRESSURE AND OPENED UPON RELIEF THEREOF; A CUT-OFF VALVE IN THE WATER CONDUIT, A THREE-WAY VALVE UPSTREAM OF THE CUT-OFF VALVE, THE THREEWAY VALVE BEING NORMALLYPOSITIONED TO ADMIT WATER UNDER PRESSURE TO THE HYDRAULICALLY-OPERATED VALVE TO CLOSE THE SAME; MEANS TO SHIFT THE THREE-WAY VALVE TO A POSITION TO EXHAUST SAID HYDRAULIC PRESSURE; AND MEANS TO OPEN AND CLOSE THE CUT-OFF VALVE; THE UPSTREAM DISPOSITION OF THE THREE-WAY VALVE ASSURING NORMAL CLOSING OF THE DRAIN VALVE REGARDLESS OF THE POSITION OF THE CUT-OFF VALVE.
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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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |