US3843151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Particle engaging screen device for pyro-technic system
Assignee: Honeywell International Inc
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Filing: 1972-04-10
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Granted: 1974-10-22
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Expires: 1992-04-10
Abstract
Abstract Entrapment of heat-carrying particles from a pyro-technic burn on a screen device located within an air cushion.
Inventors
- 👤 D Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:18
CPC Classifications
B; B60; B60R; B60R21/00; B60R21/02; B60R21/16; B60R21/23; B60R21/231; B60R21/2334; B60R21/2346; B60R21/26; B60R21/261; F; F42; F42D; F42D5/00; F42D5/04; F42D5/055; B60R2021/23123
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
148 words
In an air cushion inflation apparatus including a gas generator made up at least partially of a pyro-technic material which burns to produce a gas and an air bag to which said gas is directed, the improvement comprising: a gas impurity screen means interposed between said gas generator and said air bag, said gas impurity screen means being contained entirely within said bag, both before and after actuation of said inflation apparatus, and said gas impurity screen means being adapted to engage impurities, said gas impurity screen means being porous to the passing of said gas therethrough and into the bag for inflation thereof; and a manifold for distributing said gas to the inside of said air bag for inflation thereof, said manifold being made of porous metal and serving both for distribution of said gas as a result of its porosity and for entrapment of heat-carrying particles.
Claim 2
Dependent Claim
148 words
In an air cushion inflation apparatus including a gas generator made up at least partially of a pyro-technic material which burns to produce a gas and an air bag to which said gas is directed, the improvement comprising: a gas impurity screen means interposed between said gas generator and said air bag, said gas impurity screen means being contained entirely within said bag, both before and after actuation of said inflation apparatus, and said gas impurity screen means being adapted to engage impurities, said gas impurity screen means being porous to the passing of said gas therethrough and into the bag for inflation thereof; and a manifold for distributing said gas to the inside of said air bag for inflation thereof, said manifold being made of porous metal and serving both for distribution of said gas as a result of its porosity and for entrapment of heat-carrying particles.
Claim 3
Dependent Claim
48 words
Apparatus as claimed in claim 1, and further comprising a sound reducing screen disposed within said air bag and surrounding said porous manifold to break up the sound waves of said gas entering the air bag and to catch any heat containing impurities passing through said porous manifold.
Claim 4
Dependent Claim
42 words
Apparatus as claimed in claim 1, said gas impurity screen means comprising a porous inner bag surrounding said porous manifold as a part of said screen means to engage impurities passing through the porous manifold but to allow gas to pass therethrough.
Claim 5
Dependent Claim
34 words
Apparatus as claimed in claim 3, said porous inner bag when inflated being removed from said manifold about 1 1/2 percent to to about 40 percent of diameter of the air bag when inflated.
Claim 6
Dependent Claim
38 words
Apparatus as set forth in claim 4, said inner bag when inflated being removed from about 1 inch to about 2 inches from said manifold with 30 inches being the approximate diameter across the air bag when inflated.
Claim 7
Dependent Claim
15 words
Apparatus as claimed in claim 1, said porous manifold being comprised of sintered stainless steel.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |