US3107698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipes
Assignee: BRISTOL AEROPLANE PLASTIES Ltd
•
Filing: 1959-03-04
•
Granted: 1963-10-22
•
Expires: 1979-03-04
Abstract
No abstract record available.
Inventors
- 👤 Baker William Andrew
- 👤 Thompson Alan William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:12
CPC Classifications
F; F16; F16L; F16L9/00; F16L9/16; B; B29; B29C; B29C53/00; B29C53/56; B29C53/58; B29C53/60; B29C53/62; B29C53/64; B29C53/80; B29C53/8008; B29C53/8016; B29C53/8066; B29C53/8075; Y; Y10; Y10S; Y10S273/00; Y10S273/07; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1369; Y10T428/24; Y10T428/24058; Y10T428/24074; Y10T428/24091; Y10T428/24132
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A PIPE OF SUBSTANTIALLY CIRCULAR CROSS-SECTION CONSISTING ESSENTIALLY OF AT LEAST THREE LAYERS OF SUBSTANTIALLY HELICAL TURNS OF THREAD, THE THREADS OF SUCCESSIVE LAYERS CROSSING ONE ANOTHER, A SOLID RESINOUS SUBSTANCE BONDING THE THREADS TOGETHER, THERE BEING IN ANY SMALL AREA OF THE WALL THREADS EXTENDING IN AT LEAST THREE DIFFERENT HELICAL DIRECTIONS, THE ANGULAR DIFFERENCES BETWEEN THE HELICAL DIRECTIONS MEASURED SUCCESSIVELY BEING SUBSTANTIALLY EQUAL AND THE NUMBERS OF THREADS IN EACH OF THE HELICAL DIRECTIONS BEING SUBSTANTIALLY PROPORTIONAL TO THE COSINES OF THE HELIX-ANGLES OF SUCH DIRECTIONS.
Claim 2
Dependent Claim
88 words
A PIPE OF SUBSTANTIALLY CIRCULAR CROSS-SECTION CONSISTING ESSENTIALLY OF AT LEAST THREE LAYERS OF SUBSTANTIALLY HELICAL TURNS OF THREAD, THE THREADS OF SUCCESSIVE LAYERS CROSSING ONE ANOTHER, A SOLID RESINOUS SUBSTANCE BONDING THE THREADS TOGETHER, THERE BEING IN ANY SMALL AREA OF THE WALL THREADS EXTENDING IN AT LEAST THREE DIFFERENT HELICAL DIRECTIONS, THE ANGULAR DIFFERENCES BETWEEN THE HELICAL DIRECTIONS MEASURED SUCCESSIVELY BEING SUBSTANTIALLY EQUAL AND THE NUMBERS OF THREADS IN EACH OF THE HELICAL DIRECTIONS BEING SUBSTANTIALLY PROPORTIONAL TO THE COSINES OF THE HELIX-ANGLES OF SUCH DIRECTIONS.
References Cited (Backward Citations)
US1011090A
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GB430668A
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US2723705A
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US2747616A
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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) | 1966-10-21 | 1967-04-22 | 1967-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-21 | 1971-04-22 | 1971-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-21 | 1975-04-22 | 1975-10-22 | $7700.00 | Window Closed / Lapsed |