Patent US3900211A successfully refreshed from Google Patents.
US3900211A
Expired / Lapsed
US
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Pyrotechnic actuated valve
Assignee: Teledyne Mccormick Selph
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Filing: 1974-04-04
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Granted: 1975-08-19
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Expires: 1994-04-04
Abstract
Abstract A fast acting valve adapted for actuation by a pyrotechnic charge, especially applicable to the purpose of discharging a container of compressed fluid into an inflatable automobile seat belt upon command, but useful to any application where an extremely fast-acting dump valve is required, the structure eliminating expulsion of component structure or pyrotechnic residue into the fluid stream.
Inventors
- 👤 Lowell L Russell
- 👤 Claude E Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:16
CPC Classifications
B; B60; B60R; B60R21/00; B60R21/02; B60R21/16; B60R21/26; B60R21/268; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1632; Y10T137/1782
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
193 words
A pyrotechnic actuated valve connectable to a container of fluid under pressure, comprising: A. a hollow valve body having an inlet at one end connectable to a container of fluid under pressure, and terminating in an internal flange; B. said hollow valve body including a poppet cavity with a discharge outlet therefrom; C. a movable poppet in said poppet cavity including an external flange interconnected to a poppet body by a shearable web, said flange being engageable against said internal flange of said inlet and said poppet body normally closing said outlet; a poppet support positioned in operable engagement with said poppet, comprising a dished disc in engagement with said movable poppet, a retainer at the end of said valve body remote from said inlet, and a hollow, frangible tube held in longitudinal compression between said disc and said retainer; and E. a pyrotechnic charge internal of said frangible support tube adapted upon activation to disintegrate said support tube whereupon fluid pressure moves said poppet, after shearing said shearable web, to open said outlet with disintegrated material of said tube and pyrotechnic residue being maintained free from said outlet by the moved poppet.
Claim 2
Dependent Claim
193 words
A pyrotechnic actuated valve connectable to a container of fluid under pressure, comprising: A. a hollow valve body having an inlet at one end connectable to a container of fluid under pressure, and terminating in an internal flange; B. said hollow valve body including a poppet cavity with a discharge outlet therefrom; C. a movable poppet in said poppet cavity including an external flange interconnected to a poppet body by a shearable web, said flange being engageable against said internal flange of said inlet and said poppet body normally closing said outlet; a poppet support positioned in operable engagement with said poppet, comprising a dished disc in engagement with said movable poppet, a retainer at the end of said valve body remote from said inlet, and a hollow, frangible tube held in longitudinal compression between said disc and said retainer; and E. a pyrotechnic charge internal of said frangible support tube adapted upon activation to disintegrate said support tube whereupon fluid pressure moves said poppet, after shearing said shearable web, to open said outlet with disintegrated material of said tube and pyrotechnic residue being maintained free from said outlet by the moved poppet.
Claim 3
Dependent Claim
27 words
A pyrotechnic actuated valve as claimed in claim 1, said retainer comprising a retainer tube threadedly engaged in the interior of the end remote from said inlet.
Claim 4
Dependent Claim
54 words
A pyrotechnic actuated valve as claimed in claim 1, wherein said discharge outlet is operatively connected with an inflatable automobile seat belt whereby upon command actuation of said pyrotechnic charge, fluid under pressure from said container is discharged into said seat belt with fluid flow being maintained free from disintegrated material and pyrotechnic residue.
Claim 5
Dependent Claim
33 words
A pyrotechnic actuated valve as claimed in claim 1 including an initiator external of said retainer tube and operatively connected with said pyrotechnic charge, said initiator being controllably activatable externally from said valve.
Claim 6
Dependent Claim
21 words
A pyrotechnic actuated valve as claimed in claim 1, said frangible support tube consisting of a hollow tube of ceramic material.
Claim 7
Dependent Claim
53 words
A pyrotechnic actuated valve as claimed in claim 1, said poppet body having an internal cavity therein opening outwardly at the end thereof proximate said external flange, a container fill valve operatively inserted in said cavity whereby said valve is operable with a container with no external openings other than the container outlet.
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) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |