Patent US3077697A successfully refreshed from Google Patents.
US3077697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cartesian diver toy
Assignee: Individual
•
Filing: 1959-06-04
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Granted: 1963-02-19
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Expires: 1979-06-04
Abstract
No abstract record available.
Inventors
- 👤 Fry Carroll Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:52
CPC Classifications
A; A63; A63H; A63H23/00; A63H23/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
IN A CARTESIAN TOY INCLUDING A SEALED, HOLLOW CHAMBER SUBSTANTIALLY FILLED WITH A LIQUID, AND A CARTESIAN ELEMENT IN SAID LIQUID WHICH MAY BE MADE TO SINK IN SAID LIQUID BY INCREASING THE LIQUID PRESSURE AND TO RISE IN SAID LIQUID BY DECREASING THE LIQUID PRESSURE, THE IMPROVEMENTS COMPRISING PRESSURE ADJUSTING MEANS ON SAID CHAMBER OPERABLE EXTERNALLY OF THE LATTER FOR VARYING THE PRESSURE OF SAID LIQUID TO MAKE SAID ELEMENT SINK AND RISE, SAID PRESSURE ADJUSTING MEANS INCLUDING A FIRST PRESSURE ADJUSTING MEMBER FOR INITIALLY SETTING THE PRESSURE OF SAID LIQUID AT A GIVEN VALUE AT WHICH SAID ELEMENT HAS APPROXIMATELY NEUTRAL BUOYANCY IN SAID LIQUID AND A SECOND PRESSURE ADJUSTING MEMBER FOR THEREAFTER VARYING SAID PRESSURE OVER A GIVEN RANGE ABOUT SAID GIVEN VALUE.
Claim 2
Dependent Claim
126 words
IN A CARTESIAN TOY INCLUDING A SEALED, HOLLOW CHAMBER SUBSTANTIALLY FILLED WITH A LIQUID, AND A CARTESIAN ELEMENT IN SAID LIQUID WHICH MAY BE MADE TO SINK IN SAID LIQUID BY INCREASING THE LIQUID PRESSURE AND TO RISE IN SAID LIQUID BY DECREASING THE LIQUID PRESSURE, THE IMPROVEMENTS COMPRISING PRESSURE ADJUSTING MEANS ON SAID CHAMBER OPERABLE EXTERNALLY OF THE LATTER FOR VARYING THE PRESSURE OF SAID LIQUID TO MAKE SAID ELEMENT SINK AND RISE, SAID PRESSURE ADJUSTING MEANS INCLUDING A FIRST PRESSURE ADJUSTING MEMBER FOR INITIALLY SETTING THE PRESSURE OF SAID LIQUID AT A GIVEN VALUE AT WHICH SAID ELEMENT HAS APPROXIMATELY NEUTRAL BUOYANCY IN SAID LIQUID AND A SECOND PRESSURE ADJUSTING MEMBER FOR THEREAFTER VARYING SAID PRESSURE OVER A GIVEN RANGE ABOUT SAID GIVEN VALUE.
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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) | 1966-02-18 | 1966-08-20 | 1967-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-18 | 1970-08-20 | 1971-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-18 | 1974-08-20 | 1975-02-19 | $7700.00 | Window Closed / Lapsed |