US3227837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-magnetic controlled flow switch
Assignee: COMMERCIAL FACTORS Ltd
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Filing: 1963-09-05
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Granted: 1966-01-04
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Expires: 1983-09-05
Abstract
No abstract record available.
Inventors
- 👤 Weinstein Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:17
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/40; H01H35/405; H01H35/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A FLUID FLOW INDICATOR FOR MEASURING THE FLUID FLOW THROUGH A CONDUIT COMPRISING, A CONDUIT FOR THE PASSAGE OF FLUID HAVING A CONSTRICTED ORIFICE THEREIN FOR PRODUCING A DIFFERENTIAL PRESSURE RESPONSIVE TO THE RATE OF FLUID FLOW, A FIRST COMPARTMENT CONNECTED TO SAID CONDUIT ON ONE SIDE OF THE ORIFICE FOR SENSING THE PRESSURE THEREIN, A SECOND COMPARTMENT ADJOINING THE FIRST AND CONNECTED TO THE CONDUIT ON THE OTHER SIDE OF THE ORIFICE FOR SENSING THE PRESSURE THEREIN, A RESILIENT DIAPHRAGM FORMING A COMMON WALL BETWEEN SAID COMPARTMENTS AND MOVABLE IN RESPONSE TO PRESSURE DIFFERENCES THEREBETWEEN, A PERMAMENT MAGNET SECURED TO SAID DIAPHRAGM AND MOVABLE WITH IT, A COIL OF WIRE MOVEMENT EXTERNAL TO SAID COMPARTMENTS BUT ADJACENT TO SAID PERMANENT MAGNET, A MEASURING MEANS CONNECTED TO SAID COIL OF WIRE AND RESPONSIVE TO THE CHANGE OF IMPEDANCE OF THE COIL, AND A SOURCE OF ALTERNATING CURRENT POWER CONNECTED TO SAID MEASURING MEANS.
Claim 2
Dependent Claim
153 words
A FLUID FLOW INDICATOR FOR MEASURING THE FLUID FLOW THROUGH A CONDUIT COMPRISING, A CONDUIT FOR THE PASSAGE OF FLUID HAVING A CONSTRICTED ORIFICE THEREIN FOR PRODUCING A DIFFERENTIAL PRESSURE RESPONSIVE TO THE RATE OF FLUID FLOW, A FIRST COMPARTMENT CONNECTED TO SAID CONDUIT ON ONE SIDE OF THE ORIFICE FOR SENSING THE PRESSURE THEREIN, A SECOND COMPARTMENT ADJOINING THE FIRST AND CONNECTED TO THE CONDUIT ON THE OTHER SIDE OF THE ORIFICE FOR SENSING THE PRESSURE THEREIN, A RESILIENT DIAPHRAGM FORMING A COMMON WALL BETWEEN SAID COMPARTMENTS AND MOVABLE IN RESPONSE TO PRESSURE DIFFERENCES THEREBETWEEN, A PERMAMENT MAGNET SECURED TO SAID DIAPHRAGM AND MOVABLE WITH IT, A COIL OF WIRE MOVEMENT EXTERNAL TO SAID COMPARTMENTS BUT ADJACENT TO SAID PERMANENT MAGNET, A MEASURING MEANS CONNECTED TO SAID COIL OF WIRE AND RESPONSIVE TO THE CHANGE OF IMPEDANCE OF THE COIL, AND A SOURCE OF ALTERNATING CURRENT POWER CONNECTED TO SAID MEASURING MEANS.
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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |