Patent US3078880A successfully refreshed from Google Patents.
US3078880A
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Folding insulated duct
Assignee: Gustin Bacon Manufacturing Co
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Filing: 1953-05-11
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Granted: 1963-02-26
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Expires: 1973-05-11
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Stephens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:20
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/14; F16L59/16; F16L59/02; F16L59/026; F16L59/18; F16L59/182; F16L9/00; F16L9/003; F24; F24F; F24F13/00; F24F13/02; F24F13/0263; Y; Y10; Y10S; Y10S138/00; Y10S138/02; Y10S138/04; Y10S138/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A FOLDING INSULATED DUCT COMPRISING AN INTEGRAL SHEET OF A MOLDED MAT OF FIBERS BONDED WITH A HEAT-REACTIVE RESIN AND FORMED WITH A PLURALITY OF FURROWS EXTENDING IN THE DIRECTION OF THE LENGTH OF THE SHEET, THE SEPARATION BETWEEN SAID FURROWS BEING DETERMINED BY THE DIMENSIONS OF SAID DUCT, SAID SHEET BEING COMPRESSED TO A PREDETERMINED DENSITY IN THE AREA BETWEEN SAID FURROWS AND TO A DENSITY GREATER THAN SAID PREDETERMINED DENSITY IN THE AREA OF SAID FURROWS, SAID DENSITIES BEING RETAINED BY SAID HEAT-REACTIVE RESIN IN ITS CURED STATE, SAID SHEET ADAPTED TO BE BENT ALONG SAID FURROWS TO FORM A COMPLETED DUCT.
Claim 2
Dependent Claim
104 words
A FOLDING INSULATED DUCT COMPRISING AN INTEGRAL SHEET OF A MOLDED MAT OF FIBERS BONDED WITH A HEAT-REACTIVE RESIN AND FORMED WITH A PLURALITY OF FURROWS EXTENDING IN THE DIRECTION OF THE LENGTH OF THE SHEET, THE SEPARATION BETWEEN SAID FURROWS BEING DETERMINED BY THE DIMENSIONS OF SAID DUCT, SAID SHEET BEING COMPRESSED TO A PREDETERMINED DENSITY IN THE AREA BETWEEN SAID FURROWS AND TO A DENSITY GREATER THAN SAID PREDETERMINED DENSITY IN THE AREA OF SAID FURROWS, SAID DENSITIES BEING RETAINED BY SAID HEAT-REACTIVE RESIN IN ITS CURED STATE, SAID SHEET ADAPTED TO BE BENT ALONG SAID FURROWS TO FORM A COMPLETED DUCT.
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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) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |