Patent US3070967A successfully refreshed from Google Patents.
US3070967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry ice manufacture
Assignee: Individual
•
Filing: 1959-09-03
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Granted: 1963-01-01
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Expires: 1979-09-03
Abstract
No abstract record available.
Inventors
- 👤 Tesla L Uren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:50
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/50; C01B32/55
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
IN DRY ICE MANUFACTURING APPARATUS, A VERTICAL COLUMN, A RIGID CONE-SHAPED TOWER MOUNTED WITHIN SAID COLUMN AND PROVIDING A REVERT GAS RELEASE CHAMBER BETWEEN IT AND SAID COLUMN, A COIL WITHIN SAID CHAMBER EXTENDING ABOUT SAID CONE FOR CIRCULATING RELATIVELY WARM LIQUID CO2 ABOUT SAID CONE, MEANS FOR RELEASING SAID CIRCULATED CO2 IN THE TOP PORTION OF SAID TOWER TO FORM SNOW, AN ANGULARLY-RELATED COMPRESSION CYLINDER COMMUNICATING WITH THE LOWER LARGER END OF SAID TOWER AND HAVING A DISCHARGE END, MOVABLE MEANS FOR CLOSING THE DISCHARGE END OF SAID CYLINDER, A REVERT GAS RELEASE CONDUIT LEADING FROM SAID CYLINDER TO SAID GAS RELEASE CHAMBER, A COMPRESSOR PISTON MOUNTED IN SAID CYLINDER OPPOSITE SAID DISCHARGE END, MEANS FOR MOVING SAID PISTON TOWARD THE CLOSED END OF SAID CYLINDER FOR COMPRESSING SNOW INTO DRY ICE, FOR CLOSING SAID CONDUIT AND FOR RAISING THE PRESSURE IN SAID TOWER, AND MEANS FOR RETRACTING SAID PISTON TO OPEN SAID CONDUIT AND TO RELEASE SAID PRESSURE IN SAID TOWER WHEREBY SNOW WITHIN SAID TOWER IS QUICOLY RELEASED DURING SAID
Claim 2
Dependent Claim
173 words
IN DRY ICE MANUFACTURING APPARATUS, A VERTICAL COLUMN, A RIGID CONE-SHAPED TOWER MOUNTED WITHIN SAID COLUMN AND PROVIDING A REVERT GAS RELEASE CHAMBER BETWEEN IT AND SAID COLUMN, A COIL WITHIN SAID CHAMBER EXTENDING ABOUT SAID CONE FOR CIRCULATING RELATIVELY WARM LIQUID CO2 ABOUT SAID CONE, MEANS FOR RELEASING SAID CIRCULATED CO2 IN THE TOP PORTION OF SAID TOWER TO FORM SNOW, AN ANGULARLY-RELATED COMPRESSION CYLINDER COMMUNICATING WITH THE LOWER LARGER END OF SAID TOWER AND HAVING A DISCHARGE END, MOVABLE MEANS FOR CLOSING THE DISCHARGE END OF SAID CYLINDER, A REVERT GAS RELEASE CONDUIT LEADING FROM SAID CYLINDER TO SAID GAS RELEASE CHAMBER, A COMPRESSOR PISTON MOUNTED IN SAID CYLINDER OPPOSITE SAID DISCHARGE END, MEANS FOR MOVING SAID PISTON TOWARD THE CLOSED END OF SAID CYLINDER FOR COMPRESSING SNOW INTO DRY ICE, FOR CLOSING SAID CONDUIT AND FOR RAISING THE PRESSURE IN SAID TOWER, AND MEANS FOR RETRACTING SAID PISTON TO OPEN SAID CONDUIT AND TO RELEASE SAID PRESSURE IN SAID TOWER WHEREBY SNOW WITHIN SAID TOWER IS QUICOLY RELEASED DURING SAID
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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) | 1965-12-31 | 1966-07-02 | 1967-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-31 | 1970-07-02 | 1971-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-31 | 1974-07-02 | 1975-01-01 | $7700.00 | Window Closed / Lapsed |