US3241365A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow gauge
Assignee: Schroeder Brothers Corp
•
Filing: 1963-03-12
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Granted: 1966-03-22
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Expires: 1983-03-12
Abstract
No abstract record available.
Inventors
- 👤 William E Schroeder
- 👤 Herman F Holl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:03
CPC Classifications
G; G01; G01F; G01F25/00; G01F25/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
A FLOW GAUGE COMPRISING, (A) A FIRST PASSAGEWAY FOR THE FLOW OF FLUID TO BE MEASURED, (B) AN ORIFICE OF PREDETERMINED DIAMETER IN SAID PASSAGEWAY, (C) A PRESSURE GAUGE FOR INDICATING DIFFERENCES IN PRESSURE IN SAID PASSAGEWAY BETWEEN THE UPSTREAM AND DOWNSTREAM SIDES OF SAID ORIFICE, (D) A SECOND PASSAGEWAY HAVING A SMALL FLUID CAPACITY RELATIVE TO SAID FIRST PASSAGEWAY AND CONNECTING SAID GAUGE TO SAID FIRST PASSAGEWAY UPSTREAM OF SAID ORIFICE, (E) A THIRD PASSAGEWAY HAVING A SMALL FLUID CAPACITY RELATIVE TO SAID FIRST PASSAGEWAY AND CONNECTING SAID GAUGE TO SAID FIRST PASSAGEWAY DOWNSTREAM OF SAID ORIFICE, AND (F) A FOURTH PASSAGEWAY CONNECTING A PORTION OF SAID SECOND PASSAGEWAY IN ADVANCE OF SAID GAUGE AND A PORTION OF SAID FIRST PASSAGEWAY DOWNSTREAM OF SAID ORIFICE, SAID FOURTH PASSAGEWAY HAVING (1) A LARGE FLUID CAPACITY RELARIVE TO SAID SECOND PASSAGEWAY, AND (2) A PRESSURE RELIEF VALVE OPENING TO SAID FIRST PASSAGEWAY DOWNSTREAM OF SAID ORIFICE UPON A PREDETERMINED DIFFERENCE BETWEEN THE PRESSURE IN SAID SECOND PASSAGEWAY AND THE PRESSURE IN SAID FIRST PASSAGEWAY DOWNSTREAM OF SAID ORIFICE.
Claim 2
Dependent Claim
177 words
A FLOW GAUGE COMPRISING, (A) A FIRST PASSAGEWAY FOR THE FLOW OF FLUID TO BE MEASURED, (B) AN ORIFICE OF PREDETERMINED DIAMETER IN SAID PASSAGEWAY, (C) A PRESSURE GAUGE FOR INDICATING DIFFERENCES IN PRESSURE IN SAID PASSAGEWAY BETWEEN THE UPSTREAM AND DOWNSTREAM SIDES OF SAID ORIFICE, (D) A SECOND PASSAGEWAY HAVING A SMALL FLUID CAPACITY RELATIVE TO SAID FIRST PASSAGEWAY AND CONNECTING SAID GAUGE TO SAID FIRST PASSAGEWAY UPSTREAM OF SAID ORIFICE, (E) A THIRD PASSAGEWAY HAVING A SMALL FLUID CAPACITY RELATIVE TO SAID FIRST PASSAGEWAY AND CONNECTING SAID GAUGE TO SAID FIRST PASSAGEWAY DOWNSTREAM OF SAID ORIFICE, AND (F) A FOURTH PASSAGEWAY CONNECTING A PORTION OF SAID SECOND PASSAGEWAY IN ADVANCE OF SAID GAUGE AND A PORTION OF SAID FIRST PASSAGEWAY DOWNSTREAM OF SAID ORIFICE, SAID FOURTH PASSAGEWAY HAVING (1) A LARGE FLUID CAPACITY RELARIVE TO SAID SECOND PASSAGEWAY, AND (2) A PRESSURE RELIEF VALVE OPENING TO SAID FIRST PASSAGEWAY DOWNSTREAM OF SAID ORIFICE UPON A PREDETERMINED DIFFERENCE BETWEEN THE PRESSURE IN SAID SECOND PASSAGEWAY AND THE PRESSURE IN SAID FIRST PASSAGEWAY DOWNSTREAM OF SAID ORIFICE.
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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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |