US3218857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storage battery electrolyte level indicator
Assignee: Individual
•
Filing: 1962-08-09
•
Granted: 1965-11-23
•
Expires: 1982-08-09
Abstract
No abstract record available.
Inventors
- 👤 Kenneth B Van Woert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:10
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/30; G01F23/56; G01F23/58; H; H01; H01M; H01M50/00; H01M50/60; H01M50/609; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A DEVICE OF THE CHARACTER DESCRIBED COMPRISING AN ELONGATED TUBULAR TRANSPARENT BODY CLOSED AT ONE END AND OPEN AT THE OTHER, SAID BODY HAVING AT LEAST ONE VENT PASSAGE ADJACENT IT CLOSED END, AN EXTERNALLY THREADED PLUG MEMBER DISPOSED CONCENTRICALLY ABOUT SAID BODY AT A LONGITUDINALLY INTERMEDIATE POSITION THEREOF, SAID BODY BEING SELECTIVELY AXIALLY SLIDABLE RELATIVE TO SAID PLUG MEMBER, A TRANSVERSE PARTITION WITHIN SAID BODY ADJACENT SAID PLUG MEMBER, SAID PARTITION HAVING A CENTRAL APERTURE AND AT LEAST ONE OFF-AXIS APERTURE THERETHROUGH AND A LEVEL INDICATING FLOAT MEMBER, SAID FLOAT MEMBER INCLUDING A BALL FLOAT DISPOSED WITHIN SAID BODY ON THE OPEN END SIDE OF SAID PARTITION, AN INDICATOR BEAD DISPOSED WITHIN SAID BODY ON THE CLOSED END SIDE OF SAID PARTITION, AND AN INTERCONNECTING STEM EXTENDING THROUGH THE CENTRAL APERTURE OF SAID PARTITION IN FREELY SLIDABLE RELATION THERETO.
Claim 2
Independent Claim
140 words
A DEVICE OF THE CHARACTER DESCRIBED COMPRISING AN ELONGATED TUBULAR TRANSPARENT BODY CLOSED AT ONE END AND OPEN AT THE OTHER, SAID BODY HAVING AT LEAST ONE VENT PASSAGE ADJACENT IT CLOSED END, AN EXTERNALLY THREADED PLUG MEMBER DISPOSED CONCENTRICALLY ABOUT SAID BODY AT A LONGITUDINALLY INTERMEDIATE POSITION THEREOF, SAID BODY BEING SELECTIVELY AXIALLY SLIDABLE RELATIVE TO SAID PLUG MEMBER, A TRANSVERSE PARTITION WITHIN SAID BODY ADJACENT SAID PLUG MEMBER, SAID PARTITION HAVING A CENTRAL APERTURE AND AT LEAST ONE OFF-AXIS APERTURE THERETHROUGH AND A LEVEL INDICATING FLOAT MEMBER, SAID FLOAT MEMBER INCLUDING A BALL FLOAT DISPOSED WITHIN SAID BODY ON THE OPEN END SIDE OF SAID PARTITION, AN INDICATOR BEAD DISPOSED WITHIN SAID BODY ON THE CLOSED END SIDE OF SAID PARTITION, AND AN INTERCONNECTING STEM EXTENDING THROUGH THE CENTRAL APERTURE OF SAID PARTITION IN FREELY SLIDABLE RELATION THERETO.
References Cited (Backward Citations)
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Cited
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Cited
US1643238A
Cited
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Cited
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Cited
US2562604A
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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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |