US3086557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conduit with preformed elements
Assignee: Individual
•
Filing: 1957-09-30
•
Granted: 1963-04-23
•
Expires: 1977-09-30
Abstract
No abstract record available.
Inventors
- 👤 Thomas F Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:45
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/15; B29C48/156; B29C48/03; B29C48/06; B29C48/09; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20396; Y10T74/20402; Y10T74/20456
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
FLEXIBLE TUBULAR STRUCTURE USEFUL FOR CABLE COVERING, CONDUIT OR PIPE COMPRISING A PLURALITY OF ELONGATED INHERENTLY FORM-MAINTAINING METALLIC ELEMENTS EACH PREFORMED INTO THE SHAPE OF A HELIX HAVING A PITCH ON THE ORDER OF SEVERAL TIMES THE DIAMETER OF THE HELIX, SAID ELEMENTS BEING DISPOSED IN CIRCUMFERENTIALLY SPACED RELATION WITH THE PREFORMED ELEMENTS HAVING SPACINGS BETWEEN ELEMENTS EACH OF WHICH SPACINGS HAS A CIRCUMFERENTIAL WIDTH ON THE ORDER OF ONE UP TO SEVERAL TIMES THE CIRCUMFERENTIAL WIDTH OF EACH ELEMENT, SAID SPACINGS BEING FILLED WITH A FLEXIBLE PLASTIC COMPOSITION SOLIDIFIED AND BONDED TO SAID ELEMENTS AND FIXING THEM IN SPACED RELATION AND SAID ELEMENTS IMPARTING LONGITUDINAL AND RADIAL REINFORCEMENT TO THE STRUCTURE.
Claim 2
Dependent Claim
112 words
FLEXIBLE TUBULAR STRUCTURE USEFUL FOR CABLE COVERING, CONDUIT OR PIPE COMPRISING A PLURALITY OF ELONGATED INHERENTLY FORM-MAINTAINING METALLIC ELEMENTS EACH PREFORMED INTO THE SHAPE OF A HELIX HAVING A PITCH ON THE ORDER OF SEVERAL TIMES THE DIAMETER OF THE HELIX, SAID ELEMENTS BEING DISPOSED IN CIRCUMFERENTIALLY SPACED RELATION WITH THE PREFORMED ELEMENTS HAVING SPACINGS BETWEEN ELEMENTS EACH OF WHICH SPACINGS HAS A CIRCUMFERENTIAL WIDTH ON THE ORDER OF ONE UP TO SEVERAL TIMES THE CIRCUMFERENTIAL WIDTH OF EACH ELEMENT, SAID SPACINGS BEING FILLED WITH A FLEXIBLE PLASTIC COMPOSITION SOLIDIFIED AND BONDED TO SAID ELEMENTS AND FIXING THEM IN SPACED RELATION AND SAID ELEMENTS IMPARTING LONGITUDINAL AND RADIAL REINFORCEMENT TO THE STRUCTURE.
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) | 1966-04-22 | 1966-10-22 | 1967-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-22 | 1970-10-22 | 1971-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-22 | 1974-10-22 | 1975-04-23 | $7700.00 | Window Closed / Lapsed |