US2877150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing pipes, conduits, and the like
Assignee: Individual
•
Filing: 1955-05-11
•
Granted: 1959-03-10
•
Expires: 1975-05-11
Abstract
No abstract record available.
Inventors
- 👤 Marion E Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:17
CPC Classifications
B; B31; B31C; B31C3/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1075
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
IN THE ART OF MANUFACTURING TUBES, PIPES AND THE LIKE, THE STEPS OF, ROTATING AMANDREL WITH A PARTING MATERIAL THEREON, WINDING A STRIP OF GLASS FIBER FABRIC SPIRALY ONTO THE MANDREL TO PROVIDE A CYLINDRICAL INNER LAYER, SIMULTANEOUSLY IMPREGNATING SAID FABRIC WITH AN ADHESIVE MATERIAL WHICH HAS THE CHARACTERISTIC OF SETTING, WINDING A STRIP OF CORRUGATED PAPER ONTO SAID LAYER WITH THE CORRUGATIONS EXTENDING SUBSTANTIALLY RADIALLY WITH RESPECT TO THE AXIS OF THE MANDREL TO FORM AN INTERMEDIATE LAYER SURROUNDING SAID INNER, WINDING A STRIP OF GLASS FIBER FABRIC ONTO SIAD INTERMEDIATE LAYER TO FORM AN OUTER LAYER ENCLOSING SAID INTERMEDIATE LAYER, AND SUBSTANTIALLY SIMULTANEOUSLY IMPREGNATING SAID OUTER LAYER WITH AN ADHESIVE MATERIAL WHICH HAS THE CHARACTERISTIC OF SETTING.
Claim 2
Dependent Claim
119 words
IN THE ART OF MANUFACTURING TUBES, PIPES AND THE LIKE, THE STEPS OF, ROTATING AMANDREL WITH A PARTING MATERIAL THEREON, WINDING A STRIP OF GLASS FIBER FABRIC SPIRALY ONTO THE MANDREL TO PROVIDE A CYLINDRICAL INNER LAYER, SIMULTANEOUSLY IMPREGNATING SAID FABRIC WITH AN ADHESIVE MATERIAL WHICH HAS THE CHARACTERISTIC OF SETTING, WINDING A STRIP OF CORRUGATED PAPER ONTO SAID LAYER WITH THE CORRUGATIONS EXTENDING SUBSTANTIALLY RADIALLY WITH RESPECT TO THE AXIS OF THE MANDREL TO FORM AN INTERMEDIATE LAYER SURROUNDING SAID INNER, WINDING A STRIP OF GLASS FIBER FABRIC ONTO SIAD INTERMEDIATE LAYER TO FORM AN OUTER LAYER ENCLOSING SAID INTERMEDIATE LAYER, AND SUBSTANTIALLY SIMULTANEOUSLY IMPREGNATING SAID OUTER LAYER WITH AN ADHESIVE MATERIAL WHICH HAS THE CHARACTERISTIC OF SETTING.
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) | 1962-03-09 | 1962-09-08 | 1963-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-09 | 1966-09-08 | 1967-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-09 | 1970-09-08 | 1971-03-10 | $7700.00 | Window Closed / Lapsed |