US3643677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressed gas supply system
Assignee: MINER IND Inc
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Filing: 1970-04-29
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Granted: 1972-02-22
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Expires: 1990-04-29
Abstract
Abstract In a compressed gas supply system, particularly for supplying helium under pressure to inflate balloons, as in balloon vending machines, two tanks containing gas under pressure are connected to a supply line through respective pressure regulating valves set to feed gas under relatively low pressures from the respective tanks to the supply line, and the regulating valve associated with one of the tanks is set to feed at a pressure slightly higher than that at which the other regulating valve is set to feed so that gas is initially supplied from the tank whose regulating valve is set at the slightly higher pressure and feeding of gas from the other tank commences automatically only when the pressure of gas in the first tank has been reduced substantially to the pressure setting of the regulating valve for that other tank.
Inventors
- 👤 Manny Begleiter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:53
CPC Classifications
B; B64; B64B; B64B1/00; B64B1/58; B64B1/62; F; F17; F17C; F17C13/00; F17C13/04; F17C13/045; F17C7/00; F17C2205/00; F17C2205/03; F17C2205/0302; F17C2205/0338; F17C2221/00; F17C2221/01; F17C2221/016; F17C2221/017; F17C2223/00; F17C2223/01; F17C2223/0107; F17C2223/0123; F17C2227/00; F17C2227/04; F17C2227/041; F17C2227/042; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2564; Y10T137/2567; Y10T137/2569; Y10T137/2572
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
234 words
A compressed gas supply system comprising at least first and second containers of gas under relatively high pressure, supply conduit means, first and second branch conduit means extending from said first and second containers and opening at all times into said supply conduit means, first pressure regulating valve means interposed in said first branch conduit means and operative to open to feed gas from the first container to said supply conduit means at a first predetermined relatively low pressure only when the pressure in said first branch conduit means between said first pressure regulating valve means and said supply conduit means declines to the value of said first predetermined low pressure, and second pressure regulating valve means interposed in said second branch conduit means and operative to open to feed gas from said second container to said supply conduit means at a second predetermined relatively low pressure, which is slightly lower than said first predetermined low pressure, only when the pressure in said second branch conduit means between said second pressure regulating valve means and said supply conduit means declines to the value of said second predetermined low pressure, whereby gas is fed only from said first container until the pressure of gas therein is reduced to said second predetermined low pressure at which said second pressure regulating valve means is operative to feed and, thereafter, gas is automatically fed from said second container.
Claim 2
Dependent Claim
234 words
A compressed gas supply system comprising at least first and second containers of gas under relatively high pressure, supply conduit means, first and second branch conduit means extending from said first and second containers and opening at all times into said supply conduit means, first pressure regulating valve means interposed in said first branch conduit means and operative to open to feed gas from the first container to said supply conduit means at a first predetermined relatively low pressure only when the pressure in said first branch conduit means between said first pressure regulating valve means and said supply conduit means declines to the value of said first predetermined low pressure, and second pressure regulating valve means interposed in said second branch conduit means and operative to open to feed gas from said second container to said supply conduit means at a second predetermined relatively low pressure, which is slightly lower than said first predetermined low pressure, only when the pressure in said second branch conduit means between said second pressure regulating valve means and said supply conduit means declines to the value of said second predetermined low pressure, whereby gas is fed only from said first container until the pressure of gas therein is reduced to said second predetermined low pressure at which said second pressure regulating valve means is operative to feed and, thereafter, gas is automatically fed from said second container.
Claim 3
Dependent Claim
90 words
A compressed gas supply system according to claim 1, in which third pressure regulating valve means is interposed in said supply conduit means and is operative to feed gas therethrough at a pressure lower than either of said first and second low pressures at which said first and second pressure regulating valve means are operative to feed, whereby said supply conduit means delivers gas at said pressure at which said third pressure regulating valve means is operative to feed irrespective of the container from which the gas is being fed.
Claim 4
Dependent Claim
64 words
A compressed gas supply system according to claim 2, further comprising a nozzle to which said supply conduit means extends and through which balloons may be inflated with the gas fed thereto, and control valve means interposed in said supply conduit means to normally block the feeding of gas to said nozzle and being operable to permit the feeding of gas to said nozzle.
Claim 5
Dependent Claim
80 words
A compressed gas supply system according to claim 3, in which said gas under relatively high pressure in said containers is helium, and further comprising a source of compressed air and second supply conduit means extending from said source of compressed air to the first-mentioned supply conduit means at a location along the latter between said control valve means and said nozzle so that balloons may be inflated through said nozzle with a mixture of helium aNd air under pressure.
Claim 6
Dependent Claim
79 words
A compressed gas supply system according to claim 4, further comprising second control valve means interposed in said second supply conduit means to normally block the feeding of compressed air through said second conduit means to said nozzle and being operable to permit the feeding of compressed air, so that, by selective operation of the first mentioned control valve means and said second control valve means, the proportions of helium and compressed air in said mixture can be controlled.
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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) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |