US3150360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flowmeter alarm
Assignee: Waukee Engineering Co Inc
•
Filing: 1961-10-23
•
Granted: 1964-09-22
•
Expires: 1981-10-23
Abstract
No abstract record available.
Inventors
- 👤 Wallace I Stenzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:53
CPC Classifications
G; G01; G01P; G01P13/00; G01P13/0006; G01P13/0013; G01P13/002; G01F; G01F1/00; G01F1/05; G01F1/20; G01F1/22; G01F1/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
205 words
A DEVICE FOR SIGNALLING CHANGE FROM A GIVEN VALVE IN A GAS FLOW INDICATED BY MOVEMENT OF A POINTER IN A TRANSPARENT PORTION OF A FLOWMETER, THE DEVICE COMPRISING A GUARD SUBSTANTIALLY ENCLOSING THE TRANSPARENT FLOWMETER PORTION, THE GUARD BEING OPAQUE AND HAVING OPPOSITE SLOTS THERETHROUGH, A HOUSING HAVING TWO CAVITIES SEVERALLY OPENING OPPOSITE THE GUARD SLOTS AND HAVING TONGUES EXTENDING INTO THE GUARD SLOTS FOR POSITIONING THE HOUSING ON THE GUARD, A LIGHT BULB IN ONE OF THE CAVITIES FOR PROJECTING A BEAM OF LIGHT THROUGH THE TRANSPARENT FLOWMETER PORTIONS AND THE GUARD SLOTS, A PHOTOCELL IN ALIGNMENT WITH THE LIGHT BULB IN ANOTHER OF THE CAVITIES FOR RECEIVING THE BEAM OF LIGHT FROM ONE OF THE GUARD SLOTS AND REDUCING ELECTRICAL RESISTANCE OF ITS LIGHT SENSITIVE AREA UPON IMPINGEMENT OF LIGHT THEREON, THE POINTER INTERRUPTING THE BEAM OF LIGHT UPON POINTER MOVEMENT RESPONSIVE TO CHANGE IN THE GAS FLOW VALVE, SIGNALLING MEANS TO BE ACTUATED UPON INTERRUPTION OF THE BEAM OF LIGHT BY THE FLOWMETER POINTER, A RELAY FOR CONTROLLING ACTUATION OF THE SIGNAL MEANS, AND AN ELECTRONIC CIRCUIT FOR AMPLIFYING THE ELECTRIC CURRENT PASSED BY THE PHOTOCELL AND THEREBY OPERATING THE RELAY UPON INTERRUPTION OF THE BEAM OF LIGHT BY THE POINTER.
Claim 2
Independent Claim
205 words
A DEVICE FOR SIGNALLING CHANGE FROM A GIVEN VALVE IN A GAS FLOW INDICATED BY MOVEMENT OF A POINTER IN A TRANSPARENT PORTION OF A FLOWMETER, THE DEVICE COMPRISING A GUARD SUBSTANTIALLY ENCLOSING THE TRANSPARENT FLOWMETER PORTION, THE GUARD BEING OPAQUE AND HAVING OPPOSITE SLOTS THERETHROUGH, A HOUSING HAVING TWO CAVITIES SEVERALLY OPENING OPPOSITE THE GUARD SLOTS AND HAVING TONGUES EXTENDING INTO THE GUARD SLOTS FOR POSITIONING THE HOUSING ON THE GUARD, A LIGHT BULB IN ONE OF THE CAVITIES FOR PROJECTING A BEAM OF LIGHT THROUGH THE TRANSPARENT FLOWMETER PORTIONS AND THE GUARD SLOTS, A PHOTOCELL IN ALIGNMENT WITH THE LIGHT BULB IN ANOTHER OF THE CAVITIES FOR RECEIVING THE BEAM OF LIGHT FROM ONE OF THE GUARD SLOTS AND REDUCING ELECTRICAL RESISTANCE OF ITS LIGHT SENSITIVE AREA UPON IMPINGEMENT OF LIGHT THEREON, THE POINTER INTERRUPTING THE BEAM OF LIGHT UPON POINTER MOVEMENT RESPONSIVE TO CHANGE IN THE GAS FLOW VALVE, SIGNALLING MEANS TO BE ACTUATED UPON INTERRUPTION OF THE BEAM OF LIGHT BY THE FLOWMETER POINTER, A RELAY FOR CONTROLLING ACTUATION OF THE SIGNAL MEANS, AND AN ELECTRONIC CIRCUIT FOR AMPLIFYING THE ELECTRIC CURRENT PASSED BY THE PHOTOCELL AND THEREBY OPERATING THE RELAY UPON INTERRUPTION OF THE BEAM OF LIGHT BY THE POINTER.
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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) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |