US3247869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Helically wound tubular member
Assignee: Reynolds Metals Co
•
Filing: 1963-04-23
•
Granted: 1966-04-26
•
Expires: 1983-04-23
Abstract
No abstract record available.
Inventors
- 👤 Robert L Boegershausen
- 👤 Roy M Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:21
CPC Classifications
F; F16; F16L; F16L9/00; F16L9/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A TUBULAR MEMBER COMPRISING A HELICALLY WOUND WEB OF MATERIAL INCLUDING A FIRST STRIP OF HELICALLY WOUND MATERIAL HAVING OPPOSED SIDES AND HAVING OPPOSED END EDGES DISPOSED ADJACENT EACH OTHER, AND A SECOND STRIP OF MATERIAL DISPOSED AGAINST THE INNER SURFACE OF SAID FIRST STRIP OF MATERIAL AND HAVING OPPOSED END EDGES, ONE OF SAID END EDGES OF SAID SECOND STRIP OF MATERIAL BEING DISPOSED AGAINST THE OUTER SIDE OF SAID FIRST STRIP OF MATERIAL IN SUCH A MANNER THAT SAID SECOND STRIP OF MATERIAL FORMS A LOOP THAT IS SPACED FROM THE ADJACENT END EDGE OF SAID FIRST STRIP OF MATERIAL, SAID LOOP OVERLAPPING THE INSIDE SURFACE OF THE ADJACENT CONVOLUTION OF SAID WEB OF MATERIAL.
Claim 2
Dependent Claim
117 words
A TUBULAR MEMBER COMPRISING A HELICALLY WOUND WEB OF MATERIAL INCLUDING A FIRST STRIP OF HELICALLY WOUND MATERIAL HAVING OPPOSED SIDES AND HAVING OPPOSED END EDGES DISPOSED ADJACENT EACH OTHER, AND A SECOND STRIP OF MATERIAL DISPOSED AGAINST THE INNER SURFACE OF SAID FIRST STRIP OF MATERIAL AND HAVING OPPOSED END EDGES, ONE OF SAID END EDGES OF SAID SECOND STRIP OF MATERIAL BEING DISPOSED AGAINST THE OUTER SIDE OF SAID FIRST STRIP OF MATERIAL IN SUCH A MANNER THAT SAID SECOND STRIP OF MATERIAL FORMS A LOOP THAT IS SPACED FROM THE ADJACENT END EDGE OF SAID FIRST STRIP OF MATERIAL, SAID LOOP OVERLAPPING THE INSIDE SURFACE OF THE ADJACENT CONVOLUTION OF SAID WEB OF MATERIAL.
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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |