US3232111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid level indicator
Assignee: Yarway Corp
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Filing: 1962-09-24
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Granted: 1966-02-01
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Expires: 1982-09-24
Abstract
No abstract record available.
Inventors
- 👤 Walter J Kinderman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:40
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/14; G01F23/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
229 words
IN A LIQUID LEVEL INDICATOR, A BOILER CONTAINING LIQUID WHOSE LEVEL IS TO BE INDICATED HAVING A DOWNCOMER AND HAVING A HIGH CONNECTION ABOVE THE LEVEL OF THE LIQUID IN THE BOILER AND A LOW CONNECTION BELOW THE LEVEL OF THE LIQUID IN THE BOILER, IN COMBINATION WITH A DIFFERENTIAL PRESSURE INDICATOR HAVING A MOVABLE ELEMENT RESPONSIVE TO DIFFERENCE IN PRESSURES APPLIED TO THE OPPOSITE SIDES OF THE MOVABLE ELEMENT, A LIQUID CONNECTION FORM THE LOW CONNECTION TO ONE SIDE OF THE MOVABLE ELEMENT, A CONSTANT HEAD CHAMBER HAVING AN OVERFLOW AT A REFERENCE HEIGHT WHICH IS LOCATED AT ALL TIMES BELOW THE LEVEL OF THE LIQUID IN THE BOILER BUT ABOVE THE INDICATOR, HAVING A FLUID CONNECTION TO THE CHAMBER ABOVE THE OVERFLOW FROM THE HIGH CONNECTION OF THE BOILER EXPOSED TO COOLING FROM THE AMBIENT TEMEPRATURE AND CONSTANTLY DEPOSITING CONDENSATE IN THE CHAMBER, AND HAVING A LIQUID CONNECTION FROM THE CHAMBER BELOW THE OVERFLOW TO THE OTHER SIDE OF THE MOVABLE ELEMENT, AND MEANS CONNECTED TO THE OVERFLOW FOR DRAINING LIQUID FROM THE OVERFLOW AND MAINTAINING THE LEVEL OF THE LIQUID IN THE CHAMBER AT THE LEVEL OF THE OVERFLOW COMPRISING A COOLING LEG CONNECTED FROM THE OVERFLOW TO THE DOWNCOMER, SAID MEANS FOR DRAINING THE OVERFLOW PERMITTING DISCHARGE FROM THE OVERFLOW AT A RATE SUFFICIENT TO PREVENT THE CHAMBER FROM FILLING WITH LIQUID ABOVE THE OVERFLOW.
Claim 2
Dependent Claim
229 words
IN A LIQUID LEVEL INDICATOR, A BOILER CONTAINING LIQUID WHOSE LEVEL IS TO BE INDICATED HAVING A DOWNCOMER AND HAVING A HIGH CONNECTION ABOVE THE LEVEL OF THE LIQUID IN THE BOILER AND A LOW CONNECTION BELOW THE LEVEL OF THE LIQUID IN THE BOILER, IN COMBINATION WITH A DIFFERENTIAL PRESSURE INDICATOR HAVING A MOVABLE ELEMENT RESPONSIVE TO DIFFERENCE IN PRESSURES APPLIED TO THE OPPOSITE SIDES OF THE MOVABLE ELEMENT, A LIQUID CONNECTION FORM THE LOW CONNECTION TO ONE SIDE OF THE MOVABLE ELEMENT, A CONSTANT HEAD CHAMBER HAVING AN OVERFLOW AT A REFERENCE HEIGHT WHICH IS LOCATED AT ALL TIMES BELOW THE LEVEL OF THE LIQUID IN THE BOILER BUT ABOVE THE INDICATOR, HAVING A FLUID CONNECTION TO THE CHAMBER ABOVE THE OVERFLOW FROM THE HIGH CONNECTION OF THE BOILER EXPOSED TO COOLING FROM THE AMBIENT TEMEPRATURE AND CONSTANTLY DEPOSITING CONDENSATE IN THE CHAMBER, AND HAVING A LIQUID CONNECTION FROM THE CHAMBER BELOW THE OVERFLOW TO THE OTHER SIDE OF THE MOVABLE ELEMENT, AND MEANS CONNECTED TO THE OVERFLOW FOR DRAINING LIQUID FROM THE OVERFLOW AND MAINTAINING THE LEVEL OF THE LIQUID IN THE CHAMBER AT THE LEVEL OF THE OVERFLOW COMPRISING A COOLING LEG CONNECTED FROM THE OVERFLOW TO THE DOWNCOMER, SAID MEANS FOR DRAINING THE OVERFLOW PERMITTING DISCHARGE FROM THE OVERFLOW AT A RATE SUFFICIENT TO PREVENT THE CHAMBER FROM FILLING WITH LIQUID ABOVE THE OVERFLOW.
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) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |