US3402085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making hollow articles of helically wound fibrous tape impregnated with resin
Assignee: Champlain Cable Corp
•
Filing: 1961-02-09
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Granted: 1968-09-17
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Expires: 1981-02-09
Abstract
No abstract record available.
Inventors
- 👤 David C Trimble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:10
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/56; B29C53/566; B29C53/58; B29C53/581; B29C53/60; B29C53/62; B29C53/66; B29C53/665; F; F02; F02K; F02K9/00; F02K9/08; F02K9/32; F02K9/34; F05; F05D; F05D2250/00; F05D2250/20; F05D2250/25; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A PROCESS COMPRISING WINDING ABOUT A MANDREL IN CONTINUOUS HELICAL LAYER FORMATION AN ELONGATED TAPE OF FIBROUS MATERIAL IMPREGNATED WITH A POLYMER, SAID TAPE HAVING A PLURALITY OF PARALLEL ROWS OF SPACED ALIGNED SLITS FORMED THEREIN, AS THE SOLE SLITS THEREIN, EACH ROW OF SLITS EXTENDING IN A DIRECTION TRANSVERSE TO THE LONGITUDINAL EXTENT OF SAID TAPE, THE SLITS OF ADJACENT ROWS, AT LEAST SOME OF SAID SLITS EXTENDING INWARDLY FROM ONE LONGITUDINAL EDGE OF SAID TAPE, THE OPPOSITE LONGITUDINAL MARGINAL EDGE OF SAID TAPE, THE OPPOSITE LONGITUDINAL MARGINAL EDGE OF SAID TAPE BEING FREE OF SAID SLITS AND RESISTANT TO LONGITUDINAL STRETCH, THE TAPE EXCEPT FOR SAID RESISTANT EDGE BEING EXPANSIBLE IN RESPONSE TO LONGITUDINAL STRETCH, AND STRETCHING SAID TAPE WHILE FORMING SAID HELICAL LAYERS TO PRODUCE A HOLLOW BODY.
Claim 2
Dependent Claim
39 words
A PROCESS ACCORDING TO CLAIM 5 WHEREIN SAID MANDREL IS FRUSTO-CONICAL AND COMPRISING MAINTAINING TENSION DURING THE STEP OF HELICALLY WINDING SAID TAPE AND UNITING AND CURING THE POLYMER TO A SOLID MASS SUBSEQUENT TO THE HELICAL WINDING STEP.
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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) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |