US2741918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Velocity type flowmeter
Assignee: Phillips Petroleum Co
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Filing: 1949-11-28
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Granted: 1956-04-17
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Expires: 1969-11-28
Abstract
No abstract record available.
Inventors
- 👤 Boisblanc Deslonde R De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:29
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
88 words
A FLOWMETER COMPRISING, IN COMBINATION, A CONDUIT ADAPTED TO PASS A FLUID STREAM, A COIL, AN ARMATURE DISPOSED ADJACENT SAID COIL AND MOVABLE WITH RESPECT THERETO, A MOVABLE ELEMENT ATTACHED TO SAID ARMATURE FOR MOVEMENT THEREWITH, SAID ELEMENT HAVING A SURFACE DISPOSED WITHIN SAID CONDUIT IN ENGAGEMENT WITH FLUID IN SAID CONDUIT AND EXTENDING IN THE DIRECTION OF FLUID FLOW THROUGH SAID CONDUIT, MEANS FOR PASSING AN ALTERNATING CURRENT OF A FIRST FREQUENCY THORUGH SAID COIL TO EFFECT RECIPROCATORY MOVEMENT OF SAID ARMATURE WHEREBY SAID SURFACE IS MOVED
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) | 1959-04-17 | 1959-10-17 | 1960-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-17 | 1963-10-17 | 1964-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-17 | 1967-10-17 | 1968-04-17 | $7700.00 | Window Closed / Lapsed |