US3605496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow rate gauges
Assignee: PLASTIC PRODUCTS Ltd
•
Filing: 1969-11-10
•
Granted: 1971-09-20
•
Expires: 1989-11-10
Abstract
Abstract A FLOW RATE GAUGE HAS A CYLINDRICAL BODY USED VERTICALLY WITH A LOWER INLET AND AN UPPER OUTLET. A RESTRICTION TO FLOW IN THE BODY AND A LIQUID BYPASS BYPASSING THE FLOW RESTRICTING MEANS AND INCLUDING A SIGHT GLASS, THE LEVEL OF LIQUID RISING IN THE BYPASS INDICATING THE RATE OF FLOW OF LIQUID THROUGH THE GAUGE. A NON-RETURN VALVE IS PROVIDED TO PREVENT THE RETURN FLOW OF LIQUID AND MOVABLE TUBES WITHIN THE BODY MOVE WHEN THE GAUGE IS LAID ON ITS SIDE TO PERMIT CLEANING LIQUID TO PASS THROUGH THE BYPASS.
Inventors
- 👤 Douglas L Wenham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:29
CPC Classifications
G; G01; G01F; G01F5/00; G01F1/00; G01F1/05; G01F1/52
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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 |