US3720235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite tubing
Assignee: FLUROCARBON COMPANY
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Filing: 1970-09-30
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Granted: 1973-03-13
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Expires: 1990-09-30
Abstract
Abstract A tube adapted to convey fluids under pressure and to be distorted without kinking and blocking of fluid flow therethrough has a resinous core tubing provided with internal longitudinal ribs. The tube is provided with a fibrous reinforcing member disposed about the core tube and an outer sheath if it is to convey fluids under pressure of 500 p.s.i. or more.
Inventors
- 👤 J Schrock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:19
CPC Classifications
F; F16; F16L; F16L11/00; F16L11/04; F16L11/12; F16L11/121; Y; Y10; Y10S; Y10S128/00; Y10S128/912
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
173 words
A fluid conveying assembly comprising a hollow tube formed of an elastomeric material with a bore therethrough, the interior of said tube having circumferentially spaced, longitudinally extending integral ribs which project inwardly and thus form grooves therebetween, said ribs and grooves having a configuration whereby upon compression of the tube about any diameter thereof the interior surfaces of the grooves and ribs on one side of said any diameter will not form a surface complementary with the interior surface of the grooves and ribs on the other side of said any diameter and the tube will remain open for the passage of fluid therethrough and a coupling member having a bore which communicates with the bore of the tube and external circumferentially spaced longitudinally extending ribs about its periphery equal in number to the number of said grooves between the ribs on the tube wall, each rib of the coupling member being disposed snugly in a groove of the core tubing, and means for pressing the tube wall firmly against the coupling member.
Claim 2
Dependent Claim
173 words
A fluid conveying assembly comprising a hollow tube formed of an elastomeric material with a bore therethrough, the interior of said tube having circumferentially spaced, longitudinally extending integral ribs which project inwardly and thus form grooves therebetween, said ribs and grooves having a configuration whereby upon compression of the tube about any diameter thereof the interior surfaces of the grooves and ribs on one side of said any diameter will not form a surface complementary with the interior surface of the grooves and ribs on the other side of said any diameter and the tube will remain open for the passage of fluid therethrough and a coupling member having a bore which communicates with the bore of the tube and external circumferentially spaced longitudinally extending ribs about its periphery equal in number to the number of said grooves between the ribs on the tube wall, each rib of the coupling member being disposed snugly in a groove of the core tubing, and means for pressing the tube wall firmly against the coupling member.
Claim 3
Dependent Claim
23 words
The assembly of claim 1 further characterized in that the number of ribs is a positive whole odd integer in excess of one.
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) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |