Patent US3206905A successfully refreshed from Google Patents.
US3206905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for treating and handling perlite and the like
Assignee: Silbrico Corp
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Filing: 1961-09-18
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Granted: 1965-09-21
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Expires: 1981-09-18
Abstract
No abstract record available.
Inventors
- 👤 Gerald A Wavering
- 👤 Jr Carl Mendius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:52
CPC Classifications
E; E04; E04F; E04F21/00; E04F21/02; E04F21/06; E04F21/08; E04F21/085; C; C04; C04B; C04B20/00; C04B20/02; C04B20/04; C04B20/06; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/76; E04B1/7604
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A METHOD FOR INSULATING A STORAGE TANK OR THE LIKE STRUCTURE HAVING AN INSULATING COMPARTMENT AND AN ENTRANCE TO THE COMPARTMENT ADJACENT THE TOP OF THE TANK, WHICH COMPRISES THE CONTINUOUS STEPS OF, THERMALLY EXPANDING MINERAL PERLITE ORE IN SITU ADJACENT THE TANK, SEPARATING THE HOT GASES FROM THE EXPANDED PERLITE AND COLLECTING THE HOT EXPANDED PERLITE AS A CONTINUOUS STREAM, MIXING THE STREAM OF HOT PERLITE WITH COOL AIR AND TRANSPORTING THE MIXTURE TO THE TOP OF THE TANK BY MEANS OF A BLOWER, MIXING THE STREAM OF THE COOLED EXPANDED PERLITE WITH AIR UNDER PRESSURE AT THE TOP OF THE TANK AND DIRECTING THE RESULTING MIXTURE IN A CONFINED PATH TO A DESIRED LOCATION IN SAID COMPARTMENT THROUGH SID ENTRANCE.
Claim 2
Independent Claim
122 words
A METHOD FOR INSULATING A STORAGE TANK OR THE LIKE STRUCTURE HAVING AN INSULATING COMPARTMENT AND AN ENTRANCE TO THE COMPARTMENT ADJACENT THE TOP OF THE TANK, WHICH COMPRISES THE CONTINUOUS STEPS OF, THERMALLY EXPANDING MINERAL PERLITE ORE IN SITU ADJACENT THE TANK, SEPARATING THE HOT GASES FROM THE EXPANDED PERLITE AND COLLECTING THE HOT EXPANDED PERLITE AS A CONTINUOUS STREAM, MIXING THE STREAM OF HOT PERLITE WITH COOL AIR AND TRANSPORTING THE MIXTURE TO THE TOP OF THE TANK BY MEANS OF A BLOWER, MIXING THE STREAM OF THE COOLED EXPANDED PERLITE WITH AIR UNDER PRESSURE AT THE TOP OF THE TANK AND DIRECTING THE RESULTING MIXTURE IN A CONFINED PATH TO A DESIRED LOCATION IN SAID COMPARTMENT THROUGH SID ENTRANCE.
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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) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |