US3717530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming crush resistant conduit
Assignee: Ilc Industries Inc
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Filing: 1970-05-01
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Granted: 1973-02-20
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Expires: 1990-05-01
Abstract
Abstract Disclosed is a method for forming conduits or ducts for feeding life support gas, such as oxygen, to or from portions of a spacesuit. The conduit formed comprises a plurality of side-byside helical coils, each surrounded by a flexible open mesh sleeve. The sleeves are joined longitudinally and are secured to the coils by means of an adhesive. The coils and sleeves are surrounded by a flexible gas impermeable cover. The conduit or duct, while quite flexible, is extremely resistant to being crushed.
Inventors
- 👤 M Case
- 👤 G Durney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:45
CPC Classifications
F; F16; F16L; F16L11/00; F16L11/04; F16L11/10; Y; Y10; Y10T; Y10T428/00; Y10T428/23; Y10T428/239
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
56 words
A method of forming a flexible conduit comprising surrounding a pluralIty of helical coils with open mesh flexible sleeves, joining said sleeves longitudinally of said conduit between said coils, dipping said sleeves and coils in an adhesive to lock said sleeves to said coils, and surrounding said sleeves and coils with a gas impervious flexible cover.
Claim 2
Independent Claim
56 words
A method of forming a flexible conduit comprising surrounding a pluralIty of helical coils with open mesh flexible sleeves, joining said sleeves longitudinally of said conduit between said coils, dipping said sleeves and coils in an adhesive to lock said sleeves to said coils, and surrounding said sleeves and coils with a gas impervious flexible cover.
Claim 3
Dependent Claim
13 words
A method according to claim 1 including the step of curing said adhesive.
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) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |