Patent US4512355A successfully refreshed from Google Patents.
US4512355A
Expired / Lapsed
US
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Propellant augmented, pressurized gas dispensing device
Assignee: Rocket Research Co
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Filing: 1982-12-16
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Granted: 1985-04-23
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Expires: 2002-12-16
Abstract
Abstract A propellant augmented, gas dispensing device of the type that includes a propellant chamber coupled to a pressure vessel containing a pressurized gas and exhaust passage from the propellant chamber incorporates an additional depressurization vessel coupled in fluid communication with the exhaust passage from the propellant chamber. The depressurization vessel has a restricted exhaust passage. The exhaust passage from the propellant chamber is constructed to allow a relating high flow rate from the propellant chamber into the depressurization chamber, permitting rapid depressurization of the propellant chamber to assure propellant extinguishment. At the same time, the restricted exhaust passage from the depressurization vessel permits controlled metering of the outflow of pressurized gas from the dispensing device.
Inventors
- 👤 Lyle D. Galbraith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:15
CPC Classifications
B; B63; B63C; B63C9/00; B63C9/08; B63C9/18; A; A62; A62B; A62B1/00; A62B1/20; B01; B01J; B01J7/00; F; F42; F42B; F42B3/00; F42B3/04; F42B3/045; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1632; Y10T137/1647
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
207 words
In a pressurized gas dispensing device including: means defining a first chamber for holding a gas under pressure; means defining a second chamber for holding a propellant; means defining first flow passage means placing said first and second chambers in fluid communication, the first flow passage means comprising all fluid communication means between the first and second chambers; and means defining second flow passage means for exhausting fluids from said second chamber, the improvement comprising: means defining a third chamber in fluid communication with said second flow passage means, the second flow passage means comprising all fluid communication means between the second and third chambers; pressure relief means interposed in said second flow passage means to prevent fluid flow through the second flow passage means from the second chamber to the third chamber until the pressure in said second chamber reaches a predetermined high pressure as a result of ignition of propellant in the second chamber, and to thereupon permit said fluid flow through the second flow passage means; and means defining third flow passage means for exhausting said third chamber, said third flow passage means being smaller in total cross-section than the second flow passage means and being the sole means for exhausting said third chamber.
Claim 2
Dependent Claim
207 words
In a pressurized gas dispensing device including: means defining a first chamber for holding a gas under pressure; means defining a second chamber for holding a propellant; means defining first flow passage means placing said first and second chambers in fluid communication, the first flow passage means comprising all fluid communication means between the first and second chambers; and means defining second flow passage means for exhausting fluids from said second chamber, the improvement comprising: means defining a third chamber in fluid communication with said second flow passage means, the second flow passage means comprising all fluid communication means between the second and third chambers; pressure relief means interposed in said second flow passage means to prevent fluid flow through the second flow passage means from the second chamber to the third chamber until the pressure in said second chamber reaches a predetermined high pressure as a result of ignition of propellant in the second chamber, and to thereupon permit said fluid flow through the second flow passage means; and means defining third flow passage means for exhausting said third chamber, said third flow passage means being smaller in total cross-section than the second flow passage means and being the sole means for exhausting said third chamber.
Claim 3
Dependent Claim
233 words
In a pressurized gas dispensing device including: means defining a first chamber for holding a gas under pressure; means defining a second chamber for holding a propellant; means defining first flow passage means placing said first and second chambers in fluid communication, the first flow passage means comprising all means of fluid communication between the first and second chambers; and means defining second flow passage means for exhausting fluids from said second chamber, the improvement comprising: means defining a third chamber in fluid communication with said second flow passage means, the second flow passage means comprising all fluid communication means between the second and third chambers; pressure relief means interposed in said second flow passage means to prevent fluid flow through the second flow passage means from the second chamber to the third chamber until the pressure in said second chamber reaches a predetermined high pressure as a result of ignition of propellant in the second chamber, and to thereupon permit said fluid flow through the second flow passage means; means defining third flow passage means for exhausting said third chamber; and the total cross-section of the second flow passage means being much smaller than the volume of the third chamber such that depressurization of the second chamber occurs at a rate sufficient to extinguish the propellant in the second chamber after commencement of said fluid flow through the second flow passage means.
Claim 4
Dependent Claim
233 words
In a pressurized gas dispensing device including: means defining a first chamber for holding a gas under pressure; means defining a second chamber for holding a propellant; means defining first flow passage means placing said first and second chambers in fluid communication, the first flow passage means comprising all means of fluid communication between the first and second chambers; and means defining second flow passage means for exhausting fluids from said second chamber, the improvement comprising: means defining a third chamber in fluid communication with said second flow passage means, the second flow passage means comprising all fluid communication means between the second and third chambers; pressure relief means interposed in said second flow passage means to prevent fluid flow through the second flow passage means from the second chamber to the third chamber until the pressure in said second chamber reaches a predetermined high pressure as a result of ignition of propellant in the second chamber, and to thereupon permit said fluid flow through the second flow passage means; means defining third flow passage means for exhausting said third chamber; and the total cross-section of the second flow passage means being much smaller than the volume of the third chamber such that depressurization of the second chamber occurs at a rate sufficient to extinguish the propellant in the second chamber after commencement of said fluid flow through the second flow passage means.
Claim 5
Dependent Claim
22 words
The device of claim 2, wherein the third flow passage means is smaller in total cross-section than the second flow passage means.
Claim 6
Dependent Claim
218 words
In a pressurized gas dispensing device including: means defining a first chamber for holding a gas under pressure; means defining a second chamber for holding a propellant; means defining first flow passage means placing said first and second chambers in fluid communication, the first flow passage means comprising all fluid communication means between the first and second chambers; and means defining second flow passage means for exhausting fluids from said second chamber, the improvement comprising: means defining a third chamber in fluid communication with said second flow passage means, the second flow passage means comprising all fluid communication means between the second and third chambers; pressure relief means interposed in said second flow passage means to prevent fluid flow through the second flow passage means from the second chamber to the third chamber until the pressure in said second chamber reaches a predetermined high pressure as a result of ignition of propellant in the second chamber, and to thereupon permit said fluid flow through the second flow passage means; and means defining third flow passage means for exhausting said third chamber, said third flow passage means being smaller in total cross-section than the second flow passage means and smaller in total cross-section than the first flow passage means, and being the sole means for exhausting said third chamber.
Claim 7
Dependent Claim
218 words
In a pressurized gas dispensing device including: means defining a first chamber for holding a gas under pressure; means defining a second chamber for holding a propellant; means defining first flow passage means placing said first and second chambers in fluid communication, the first flow passage means comprising all fluid communication means between the first and second chambers; and means defining second flow passage means for exhausting fluids from said second chamber, the improvement comprising: means defining a third chamber in fluid communication with said second flow passage means, the second flow passage means comprising all fluid communication means between the second and third chambers; pressure relief means interposed in said second flow passage means to prevent fluid flow through the second flow passage means from the second chamber to the third chamber until the pressure in said second chamber reaches a predetermined high pressure as a result of ignition of propellant in the second chamber, and to thereupon permit said fluid flow through the second flow passage means; and means defining third flow passage means for exhausting said third chamber, said third flow passage means being smaller in total cross-section than the second flow passage means and smaller in total cross-section than the first flow passage means, and being the sole means for exhausting said third chamber.
Claim 8
Dependent Claim
206 words
In a pressurized gas dispensing device including: means defining a first chamber for holding a gas under pressure; means defining a second chamber for holding a propellant; means defining first flow passage means placing said first and second chambers in fluid communication, the first flow passage means comprising all means of fluid communication between the first and second chambers; and means defining second flow passage means for exhausting fluids from said second chamber, the improvement comprising: means defining a third chamber in fluid communication with said second flow passage means, the second flow passage means comprising all fluid communication means between the second and third chambers, the ratio of the volume of the third chamber to the total cross-section of the second flow passage means being approximately 10 to 0.07; pressure relief means interposed in said second flow passage means to prevent fluid flow through the second flow passage means from the second chamber to the third chamber until the pressure in said second chamber reaches a predetermined high pressure as a result of ignition of propellant in the second chamber, and to thereupon permit said fluid flow through the second flow passage means; and means defining third flow passage means for exhausting said third chamber.
Claim 9
Dependent Claim
206 words
In a pressurized gas dispensing device including: means defining a first chamber for holding a gas under pressure; means defining a second chamber for holding a propellant; means defining first flow passage means placing said first and second chambers in fluid communication, the first flow passage means comprising all means of fluid communication between the first and second chambers; and means defining second flow passage means for exhausting fluids from said second chamber, the improvement comprising: means defining a third chamber in fluid communication with said second flow passage means, the second flow passage means comprising all fluid communication means between the second and third chambers, the ratio of the volume of the third chamber to the total cross-section of the second flow passage means being approximately 10 to 0.07; pressure relief means interposed in said second flow passage means to prevent fluid flow through the second flow passage means from the second chamber to the third chamber until the pressure in said second chamber reaches a predetermined high pressure as a result of ignition of propellant in the second chamber, and to thereupon permit said fluid flow through the second flow passage means; and means defining third flow passage means for exhausting said third chamber.
References Cited (Backward Citations)
US3910596A
Cited
US4006919A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-04-22 | 1988-10-22 | 1989-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-22 | 1992-10-22 | 1993-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-22 | 1996-10-22 | 1997-04-23 | $7700.00 | Window Closed / Lapsed |