US3333837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device in rotatable drums for suspending chain systems for heat exchange
Assignee: Individual
•
Filing: 1965-04-28
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Granted: 1967-08-01
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Expires: 1985-04-28
Abstract
No abstract record available.
Inventors
- 👤 Bojner Gustav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:07
CPC Classifications
F; F27; F27B; F27B7/00; F27B7/14; F27B7/18; F27B7/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
AN APPARATUS FOR THE TREATMENT OF MATERIALS INCLUDING: (A) A DRUM ROTATABLE ABOUT A GENERALLY HORIZONTAL AXIS, SAID DRUM HAVING AN INTERIOR SURFACE DEFINING AN INNER CHAMBER THROUGH WHICH SAID MATERIAL IS PASSED, (B) A CASE IN SAID CHAMBER ROTATABLE ABOUT AN AXIS GENERALLY PARALLEL TO THE AXIS OF ROTATION OF SID DRUM AND SPACED THEREFROM, SAID CAGE INCLUDES AN OPEN FRAMEWORK DEFINING AN INTERIOR SPACE, SAID FRAMEWORK HAVING MEANS THEREON DEFINING SURFACES FOR SLIDING ENGAGEMENT WITH THE INTERIOR SURFACE OF SAID DRUM IN ROLLING LINES OF CONTACT TO THEREBY REMOVE MATERIAL ADHERED TO ANY PORTION OF SAID INTERIOR SURFACE, SAID SURFACES OF SAID CAGE DEFINING A ROLLING DIAMETER LESS THAN THE ROLLING DIAMETER OF THE INTERIOR SURFACE OF SAID DRUM, (C) A PLURALITY OF CHAINS CONNECTED TO SAID CAGE, EACH OF SAID CHAINS BEING SUSPENDED FROM SPACED POINTS ON SAID OPEN FRAMEWORK AND TRAVERSING SAID INTERIOR SPACE WITHIN SAID FRAMEWORK, EACH OF SAID CHAINS INCLUDING A DRAPED PORTION ENGAGEABLE IN ROLLING LINES OF CONTACT WITH THE INTERIOR SURFACE OF SAID DRUM THROUGH SAID OPEN FRAMEWORK.
Claim 2
Independent Claim
176 words
AN APPARATUS FOR THE TREATMENT OF MATERIALS INCLUDING: (A) A DRUM ROTATABLE ABOUT A GENERALLY HORIZONTAL AXIS, SAID DRUM HAVING AN INTERIOR SURFACE DEFINING AN INNER CHAMBER THROUGH WHICH SAID MATERIAL IS PASSED, (B) A CASE IN SAID CHAMBER ROTATABLE ABOUT AN AXIS GENERALLY PARALLEL TO THE AXIS OF ROTATION OF SID DRUM AND SPACED THEREFROM, SAID CAGE INCLUDES AN OPEN FRAMEWORK DEFINING AN INTERIOR SPACE, SAID FRAMEWORK HAVING MEANS THEREON DEFINING SURFACES FOR SLIDING ENGAGEMENT WITH THE INTERIOR SURFACE OF SAID DRUM IN ROLLING LINES OF CONTACT TO THEREBY REMOVE MATERIAL ADHERED TO ANY PORTION OF SAID INTERIOR SURFACE, SAID SURFACES OF SAID CAGE DEFINING A ROLLING DIAMETER LESS THAN THE ROLLING DIAMETER OF THE INTERIOR SURFACE OF SAID DRUM, (C) A PLURALITY OF CHAINS CONNECTED TO SAID CAGE, EACH OF SAID CHAINS BEING SUSPENDED FROM SPACED POINTS ON SAID OPEN FRAMEWORK AND TRAVERSING SAID INTERIOR SPACE WITHIN SAID FRAMEWORK, EACH OF SAID CHAINS INCLUDING A DRAPED PORTION ENGAGEABLE IN ROLLING LINES OF CONTACT WITH THE INTERIOR SURFACE OF SAID DRUM THROUGH SAID OPEN FRAMEWORK.
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) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |