Patent US3232673A successfully refreshed from Google Patents.
US3232673A
Expired / Lapsed
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Pneumatic conveying, storing and/or mixing apparatus
Assignee: Deutsche Edelstahlwerke AG
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Filing: 1964-01-16
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Granted: 1966-02-01
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Expires: 1984-01-16
Abstract
No abstract record available.
Inventors
- 👤 Selig Hans
- 👤 Schievenedel Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:07
CPC Classifications
B; B65; B65G; B65G53/00; B65G53/04; B65G53/16; B65G53/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A BLOWING FLOOR ADAPTED TO HAVE A PNEUMATIC MEDIUM BLOWN THERETHROUGH AND TO BE USED IN AN APPARATUS FOR CONVEYING, MIXING OR OTHERWISE DISPLACING MATERIAL PNEUMATICALLY COMPRISING: A POROUS PLATE OF SINTERED POWDERED MATERIAL; AND A PLURALITY OF POROUS PROJECTIONS SINTERED ON ONE FACE OF THE PLATE AND SERVING AS SUPPORT AND REINFORCEMENT FOR THE PLATE, THE PROJECTIONS BEING OF A DEPTH AT LEAST EQUAL TO THE THICKNESS OF THE POROUS PLATE.
Claim 2
Dependent Claim
72 words
A BLOWING FLOOR ADAPTED TO HAVE A PNEUMATIC MEDIUM BLOWN THERETHROUGH AND TO BE USED IN AN APPARATUS FOR CONVEYING, MIXING OR OTHERWISE DISPLACING MATERIAL PNEUMATICALLY COMPRISING: A POROUS PLATE OF SINTERED POWDERED MATERIAL; AND A PLURALITY OF POROUS PROJECTIONS SINTERED ON ONE FACE OF THE PLATE AND SERVING AS SUPPORT AND REINFORCEMENT FOR THE PLATE, THE PROJECTIONS BEING OF A DEPTH AT LEAST EQUAL TO THE THICKNESS OF THE POROUS PLATE.
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) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |