US3115158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airfoam liquid proportioning system
Assignee: Sterling Precision Corp
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Filing: 1962-03-01
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Granted: 1963-12-24
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Expires: 1982-03-01
Abstract
No abstract record available.
Inventors
- 👤 Allan G Sheppard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:13
CPC Classifications
A; A62; A62C; A62C99/00; A62C99/0009; A62C99/0036; A62C27/00; A62C5/00; A62C5/02; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/85978; Y10T137/86131; Y10T137/86163; Y10T137/87571; Y10T137/87587; Y10T137/87643
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
83 words
A SYSTEM FOR PROPORTIONING WATER AND AIRFOAM LIQUID COMPRISING THE COMBINATION OF A VENTURI; A WATER SUPPLY LINE THEREFOR; A DISCHARGE LINE FROM THE VENTURI INCORPORATING A MANUAL SHUT-OFF VALVE; A FOAM LIQUID SUPPLY LINE CONNECTED TO THE THROAT OF THE VERTURI; A CHECK VALVE IN THE FOAM LIQUID SUPPLY LINE ADAPTED TO OPEN IN A DOWNSTREAM DIRECTION; MEANS FOR SUPPLYING WATER UNDER PRESSURE TO THE WATER SUPPLY LINE AND ESTABLISHING A PREDETERMINED STATIC PRESSURE IN THE SYSTEM WHEN THE SHUT-OFF VALVE IS
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) | 1966-12-23 | 1967-06-24 | 1967-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-23 | 1971-06-24 | 1971-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-23 | 1975-06-24 | 1975-12-24 | $7700.00 | Window Closed / Lapsed |