Patent US3412257A successfully refreshed from Google Patents.
Patent US3253354A successfully refreshed from Google Patents.
US3253354A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scientific demonstration device
Assignee: Individual
•
Filing: 1964-07-13
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Granted: 1966-05-31
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Expires: 1984-07-13
Abstract
No abstract record available.
Inventors
- 👤 Stanley G Gollner
- 👤 Grsetic Zlatan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:03
CPC Classifications
G; G09; G09B; G09B23/00; G09B23/06; G09B23/08; G09B23/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A SCIENTIFIC DEMONSTRATION DEVICE FOR USE WITH A BODY OF WATER, COMPRISING: A PLURALITY OF BUOYANT BALLS; A TUBE EXTENDING FROM THE UPPER PORTION OF SAID BODY OF WATER TO THE LOWER PORTION THEREOF, WITH SAID BALLS HAVING AN OUTER DIAMETER SLIGHTLY SMALLER THAN THE INNER DIAMETER OF SAID TUBE; A PAIR OF VERTICALLY ALIGNED UPPER AND LOWER PULLEYS MOUNTED FOR ROTATION IN SAID BODY OF WATER; AN ENDLESS BELT SUPPORTED BY SAID PULLEYS; A PLURALITY OF CUPS SPACED ABOUT THE LENGTH OF SAID BELT TO RECEIVE SAID BALLS FROM THE LOWER END OF SAID TUBE AND RELEASE SAID BALLS INTO THE UPPER END OF SAID TUBE; POWER-OPERATED MEANS FOR LOWERING THE WATER PRESSURE IN THE LOWER PORTION OF SAID TUBE WHEREBY SAID BALLS WILL BE DRAWN DOWNWARDLY THROUGH SAID TUBE FROM THE UPPER PORTION THEREOF; AND
Claim 2
Dependent Claim
137 words
A SCIENTIFIC DEMONSTRATION DEVICE FOR USE WITH A BODY OF WATER, COMPRISING: A PLURALITY OF BUOYANT BALLS; A TUBE EXTENDING FROM THE UPPER PORTION OF SAID BODY OF WATER TO THE LOWER PORTION THEREOF, WITH SAID BALLS HAVING AN OUTER DIAMETER SLIGHTLY SMALLER THAN THE INNER DIAMETER OF SAID TUBE; A PAIR OF VERTICALLY ALIGNED UPPER AND LOWER PULLEYS MOUNTED FOR ROTATION IN SAID BODY OF WATER; AN ENDLESS BELT SUPPORTED BY SAID PULLEYS; A PLURALITY OF CUPS SPACED ABOUT THE LENGTH OF SAID BELT TO RECEIVE SAID BALLS FROM THE LOWER END OF SAID TUBE AND RELEASE SAID BALLS INTO THE UPPER END OF SAID TUBE; POWER-OPERATED MEANS FOR LOWERING THE WATER PRESSURE IN THE LOWER PORTION OF SAID TUBE WHEREBY SAID BALLS WILL BE DRAWN DOWNWARDLY THROUGH SAID TUBE FROM THE UPPER PORTION THEREOF; AND
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) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |