US4407340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container pressurization system
Assignee: Reynolds Metals Co
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Filing: 1982-03-29
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Granted: 1983-10-04
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Expires: 2002-03-29
Abstract
Abstract An apparatus is disclosed for pressurizing containers by injecting predetermined amounts of liquified gas into the containers. This device includes an injection unit having a combination float-pressure regulating means which employs the vapor pressure of evaporating liquified gas to its gaseous state from its liquid state to control liquified gas level and gas pressure within the device.
Inventors
- 👤 Eric L. Jensen
- 👤 Harry W. Lee, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:06
CPC Classifications
F; F17; F17C; F17C9/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
134 words
Apparatus for pressurizing containers comprising a source of liquified gas, means for adjusting pressure within said liquified gas source, means for detecting said containers and injector means responsive to said detecting means to supply liquified gas to said containers, said injector means comprising an intake line in fluid flow relation with said liquified gas source, a chamber in fluid flow relation with said intake line, a float positioned within said chamber, a tube over which said float rides and in fluid flow relation with said chamber, a first valve having a valve stem connected to said float and connected in fluid flow relation to said chamber through said tube, a second valve in fluid flow relation with said chamber for releasing said liquified gas into said containers and means for controlling said second valve.
Claim 2
Dependent Claim
134 words
Apparatus for pressurizing containers comprising a source of liquified gas, means for adjusting pressure within said liquified gas source, means for detecting said containers and injector means responsive to said detecting means to supply liquified gas to said containers, said injector means comprising an intake line in fluid flow relation with said liquified gas source, a chamber in fluid flow relation with said intake line, a float positioned within said chamber, a tube over which said float rides and in fluid flow relation with said chamber, a first valve having a valve stem connected to said float and connected in fluid flow relation to said chamber through said tube, a second valve in fluid flow relation with said chamber for releasing said liquified gas into said containers and means for controlling said second valve.
Claim 3
Dependent Claim
20 words
The apparatus of claim 1 further comprising timing means for controlling the amount of liquified gas supplied to said containers.
Claim 4
Dependent Claim
20 words
The apparatus of claim 1 further comprising heater means positioned between said liquified gas source and said pressure adjustment means.
Claim 5
Dependent Claim
22 words
The apparatus of claim 1 wherein said float includes a cap having openings therein to permit escape of gas from said chamber.
Claim 6
Dependent Claim
19 words
The apparatus of claim 1 wherein said means for controlling said second valve comprises a solenoid and a spring.
Claim 7
Dependent Claim
28 words
The apparatus of claim 1 further comprising heater means positioned within a bottom plate of said injector means for preventing freezing of said injector means during operation thereof.
Claim 8
Dependent Claim
25 words
The apparatus of claim 1 further comprising heater means positioned within said injector means for preventing moisture build-up when said apparatus is not in operation.
Claim 9
Dependent Claim
32 words
The apparatus of claim 1 wherein said second valve includes a valve stem which is in the form of a hollow tube and which is in fluid flow relation with said chamber.
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) | 1986-10-03 | 1987-04-04 | 1987-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-03 | 1991-04-04 | 1991-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-03 | 1995-04-04 | 1995-10-04 | $7700.00 | Window Closed / Lapsed |