US3296711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lining for rotary vessels
Assignee: Wyeth Holdings LLC
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Filing: 1964-06-18
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Granted: 1967-01-10
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Expires: 1984-06-18
Abstract
No abstract record available.
Inventors
- 👤 Langford Earl Eugene
- 👤 Atwood Wesley William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:12
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/0006; B01J19/002; B01F; B01F35/00; B01F35/50; B01F35/511; B01J19/02; B01J19/28; F; F26; F26B; F26B11/00; F26B11/02; F26B11/04; F26B11/0463; F26B11/0477; B01J2219/00; B01J2219/02; B01J2219/0204; B01J2219/0245
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
IN AN IMPROVED ROTARY DRUM ADAPTED TO DRY, WET STICKY SOLID SUBSTANCES, WHICH COMPRISES IN COMBINATION: A RUBBER LINED ROTARY DRUM; A PLURALITY OF EQUIDISTANT BOLTING STRIPS POSITIONED PARALLEL TO THE CENTER LINE OF SAID DRUM; A PLURALITY OF FLEXIBLE RUBBER FLAPS, EACH BEING THE LENGTH OF THE DRUM AND AT LEAST AS WIDE AS THE DISTANCE BETWEEN ADJACENT BOLTING STRIPS; MEANS FOR FASTENING EACH OF SAID FLAPS POSITIONED LONGITUDINALLY ALONG THE AXIS OF SAID RUBBER LINED DRUM IN AN OVERLAPPING FASHION, WHEREBY ONE EDGE OF EACH FLAP IS FASTENED TO THE RUBBER LINED DRUM BY MEANS OF A BOLTING STRIP AND THE OTHER EDGE OF THE FLAP OVERLIES AN ADJACENT BOLTING STRIP.
Claim 2
Dependent Claim
113 words
IN AN IMPROVED ROTARY DRUM ADAPTED TO DRY, WET STICKY SOLID SUBSTANCES, WHICH COMPRISES IN COMBINATION: A RUBBER LINED ROTARY DRUM; A PLURALITY OF EQUIDISTANT BOLTING STRIPS POSITIONED PARALLEL TO THE CENTER LINE OF SAID DRUM; A PLURALITY OF FLEXIBLE RUBBER FLAPS, EACH BEING THE LENGTH OF THE DRUM AND AT LEAST AS WIDE AS THE DISTANCE BETWEEN ADJACENT BOLTING STRIPS; MEANS FOR FASTENING EACH OF SAID FLAPS POSITIONED LONGITUDINALLY ALONG THE AXIS OF SAID RUBBER LINED DRUM IN AN OVERLAPPING FASHION, WHEREBY ONE EDGE OF EACH FLAP IS FASTENED TO THE RUBBER LINED DRUM BY MEANS OF A BOLTING STRIP AND THE OTHER EDGE OF THE FLAP OVERLIES AN ADJACENT BOLTING STRIP.
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) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |