US3206905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for treating and handling perlite and the like
Assignee: Silbrico Corp
•
Filing: 1961-09-18
•
Granted: 1965-09-21
•
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 12:52
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.
References Cited (Backward Citations)
US1597438A
Cited
US2200713A
Cited
US2431884A
Cited
US2532351A
Cited
US2807453A
Cited
US2572484A
Cited
US2589349A
Cited
GB765392A
Cited
US2917344A
Cited
US3097832A
Cited
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 |