US3036931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe coating process and apparatus
Assignee: Cen-Vi-Ro Pipe Corp
•
Filing: 1959-04-27
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Granted: 1962-05-29
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Expires: 1979-04-27
Abstract
No abstract record available.
Inventors
- 👤 Waldo R Kell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:07
CPC Classifications
B; B28; B28B; B28B21/00; B28B21/70; B28B21/72; B28B19/00; B28B19/0038; Y; Y10; Y10S; Y10S118/00; Y10S118/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
A METHOD FOR COATING THE EXTERIOR OF A CYLINDRICAL OBJECT WITH A MOIST PLASTIC MATERAIL COMPRISING ROTATING THE OBJECT AT A PREDETERMINED RATE OF ROTATION, MOVING MEASURED QUANTITIES OF SAID PLASTIC MATERIAL FROM A SOURCE THEREOF AT REST TO A PREDETERMINED INITIAL VELOCITY, SUBSTANTIALLY REVERSING THE DIRECTION OF TRAVEL OF THE MATERIAL AND INCREASING THE VELOCITY TO AT LEAST 30 TIMES THE INITAIL VELOCITY, DIRECTING A STREAM OF THE MATERIAL AT SAID LAST IDENTIFIED VELOCITY FROM A POINT OF ORIGIN OF SAID STREAM AGAINST THE OBJECT, SIMULTANEOUSLY MOVING THE POINT OF ORIGIN OF SAID STREAM OF MATERAIL FROM ONE END TO THE OTHER OF SAID CYLINDRICAL OBJECT AND ESTABLISHING A WORKING RELATIONSHIP AMONG VARIABLES CONSISTING OF THE VELOCITY OF THE MATERIAL, THE DISTANCE BETWEEN THE PIPE SURFACE AND THE POINT OF ORIGIN OF SAID STREAM OF SAID MATERIAL AT SAID MAXIMUM VELOCITY, AND THE RATE OF TRAVEL OF THE POINT OF ORIGIN OF SSAID STREAM FROM ONE END OF THE OBJECT TO THE OTHER WHEREBY TO DETERMINE THE DENSITY AND DEPTH OF THE MATERIAL ON THE OBJECT.
Claim 2
Independent Claim
177 words
A METHOD FOR COATING THE EXTERIOR OF A CYLINDRICAL OBJECT WITH A MOIST PLASTIC MATERAIL COMPRISING ROTATING THE OBJECT AT A PREDETERMINED RATE OF ROTATION, MOVING MEASURED QUANTITIES OF SAID PLASTIC MATERIAL FROM A SOURCE THEREOF AT REST TO A PREDETERMINED INITIAL VELOCITY, SUBSTANTIALLY REVERSING THE DIRECTION OF TRAVEL OF THE MATERIAL AND INCREASING THE VELOCITY TO AT LEAST 30 TIMES THE INITAIL VELOCITY, DIRECTING A STREAM OF THE MATERIAL AT SAID LAST IDENTIFIED VELOCITY FROM A POINT OF ORIGIN OF SAID STREAM AGAINST THE OBJECT, SIMULTANEOUSLY MOVING THE POINT OF ORIGIN OF SAID STREAM OF MATERAIL FROM ONE END TO THE OTHER OF SAID CYLINDRICAL OBJECT AND ESTABLISHING A WORKING RELATIONSHIP AMONG VARIABLES CONSISTING OF THE VELOCITY OF THE MATERIAL, THE DISTANCE BETWEEN THE PIPE SURFACE AND THE POINT OF ORIGIN OF SAID STREAM OF SAID MATERIAL AT SAID MAXIMUM VELOCITY, AND THE RATE OF TRAVEL OF THE POINT OF ORIGIN OF SSAID STREAM FROM ONE END OF THE OBJECT TO THE OTHER WHEREBY TO DETERMINE THE DENSITY AND DEPTH OF THE MATERIAL ON THE OBJECT.
References Cited (Backward Citations)
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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) | 1965-05-28 | 1965-11-27 | 1966-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-28 | 1969-11-27 | 1970-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-28 | 1973-11-27 | 1974-05-29 | $7700.00 | Window Closed / Lapsed |