Patent US3216256A successfully refreshed from Google Patents.
US3216256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiator level indicator
Assignee: Motors Liquidation Co
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Filing: 1962-10-04
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Granted: 1965-11-09
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Expires: 1982-10-04
Abstract
No abstract record available.
Inventors
- 👤 William E Barnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:15
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/30; G01F23/56; G01F23/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A COOLANT LEVEL INDICATOR FOR AUTOMOBILE RADIATORS HAVING A FILLER NECK WITH AN OVERFLOW CONNECTED TO SAID NECK ABOVE AND ANNULAR INNER SHOULDER IN THE LATTER, SAID INDICATOR COMPRISING A DETACHABLE COVER MEMBER FOR SEALING SAID NECK, A TRANSPARENT ELEMENT FORMING A CENTRAL PART OF SAID COVER MEMBER AND ADAPTED AS SUCH TO CONTRIBUTE IN THE SEALING OF SAID NECK, A HOLLOW STEM FIXED TO AND DEPENDING FROM SAID COVER MEMBER, A TUBULAR PORTION SLIDABLE ON SAID STEM AND CARRYING ANNULAR VALVE MEANS ADAPTED YIELDINGLY TO ENGAGE SAID INNER SHOULDER, A FLOAT MOVABLE IN SAID TUBULAR PORTION AND ARRANGED BENEATH SAID ANNULAR VALVE MEANS, VACUUM RELIEF MEANS SURROUNDING SAID HOLLOW STEM AND LOCATED WITHIN SAID TUBULAR PORTION, INDICATING MEANS MOVABLE IN SAID TRANSPARENT ELEMENT, AND A ROD SLIDABLE IN SAID HOLLOW STEM AND CONNECTING SAID FLOAT TO SAID INDICATING MEANS.
Claim 2
Dependent Claim
140 words
A COOLANT LEVEL INDICATOR FOR AUTOMOBILE RADIATORS HAVING A FILLER NECK WITH AN OVERFLOW CONNECTED TO SAID NECK ABOVE AND ANNULAR INNER SHOULDER IN THE LATTER, SAID INDICATOR COMPRISING A DETACHABLE COVER MEMBER FOR SEALING SAID NECK, A TRANSPARENT ELEMENT FORMING A CENTRAL PART OF SAID COVER MEMBER AND ADAPTED AS SUCH TO CONTRIBUTE IN THE SEALING OF SAID NECK, A HOLLOW STEM FIXED TO AND DEPENDING FROM SAID COVER MEMBER, A TUBULAR PORTION SLIDABLE ON SAID STEM AND CARRYING ANNULAR VALVE MEANS ADAPTED YIELDINGLY TO ENGAGE SAID INNER SHOULDER, A FLOAT MOVABLE IN SAID TUBULAR PORTION AND ARRANGED BENEATH SAID ANNULAR VALVE MEANS, VACUUM RELIEF MEANS SURROUNDING SAID HOLLOW STEM AND LOCATED WITHIN SAID TUBULAR PORTION, INDICATING MEANS MOVABLE IN SAID TRANSPARENT ELEMENT, AND A ROD SLIDABLE IN SAID HOLLOW STEM AND CONNECTING SAID FLOAT TO SAID INDICATING 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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |