Patent US6209568B1 successfully refreshed from Google Patents.
US6209568B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas supply system including a pressure-regulating device and installation for dispensing working liquid
Assignee: LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
•
Filing: 1999-07-16
•
Granted: 2001-04-03
•
Expires: 2019-07-16
Abstract
Abstract A system for providing gas to a container includes a source of gas under pressure, a container, and a pressure regulating device. The pressure-regulating device includes an inlet intended to be connected to a source of the gas under pressure, an outlet, connected by a duct to the inlet and intended to be placed in communication with the container, a first valve for limiting the pressure at the outlet to a predetermined maximum value Ps, which valve is a delivery valve placed in a first passage which connects the duct to an orifice for discharging inert gas. The device also includes a second valve for keeping the pressure at the outlet above a predetermined minimum value Pi, which valve is an intake valve placed in a second passage which connects the duct to an orifice that lets fluid into this duct.
Inventors
- 👤 Georges Guarneri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:16
CPC Classifications
B; B01; B01J; B01J4/00; B01J4/008; F; F16; F16K; F16K17/00; F16K17/18; F16K17/19; F16K17/194; G; G05; G05D; G05D16/00; G05D16/04; G05D16/0404; B01J2219/00; B01J2219/00049; B01J2219/00162; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3115; Y10T137/3127; Y10T137/7722; Y10T137/7771; Y10T137/778
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
143 words
A system for supplying a gas to a container, comprising: a source of gas under pressure; a container; and a pressure regulating device including an inlet in fluid communication with the a source of the gas under pressure; an outlet in fluid communication with the container; a duct connecting the outlet to the inlet; an orifice for discharging fluid from the device and permitting fluid to enter the device; a first passage fluidly connecting the duct with the orifice; a second passage fluidly connecting the duct with the orifice; a first valve limiting the pressure at the outlet to a predetermined maximum value Ps, the first valve being a delivery valve placed in the first passage; a second valve maintaining the pressure at the outlet above a predetermined minimum value Pi, the second valve being an intake valve placed in the second passage.
Claim 2
Independent Claim
143 words
A system for supplying a gas to a container, comprising: a source of gas under pressure; a container; and a pressure regulating device including an inlet in fluid communication with the a source of the gas under pressure; an outlet in fluid communication with the container; a duct connecting the outlet to the inlet; an orifice for discharging fluid from the device and permitting fluid to enter the device; a first passage fluidly connecting the duct with the orifice; a second passage fluidly connecting the duct with the orifice; a first valve limiting the pressure at the outlet to a predetermined maximum value Ps, the first valve being a delivery valve placed in the first passage; a second valve maintaining the pressure at the outlet above a predetermined minimum value Pi, the second valve being an intake valve placed in the second passage.
Claim 3
Dependent Claim
81 words
The system of claim 1 , wherein the first valve comprises a first shutter having a weight and which can move between a lower shut-off position and an upper flow position, under the action of a positive difference P + between the pressures in part of the duct and at the discharge orifice, acting against the action of the first shutter, the first shutter being of a mass selected to balance the action of a predetermined pressure difference P + c.
Claim 4
Dependent Claim
20 words
The system of claim 2 , wherein the first shutter is positioned on a seat intended to be substantially horizontal.
Claim 5
Dependent Claim
27 words
Device according to claim 3 , wherein the discharge orifice is an orifice communicating with the ambient atmosphere at pressure Pa, and in that P + c=Ps−Pa.
Claim 6
Dependent Claim
82 words
The system of claim 3 , wherein the second valve comprises a second shutter having a weight and which can move between a lower shut-off position and an upper flow position under the action of a negative difference P − between the pressures in part of the duct and at the intake orifice, acting against the action of the second shutter, the second shutter being of a mass selected to balance the action of a predetermined negative pressure difference P − c.
Claim 7
Dependent Claim
27 words
The system of claim 2 , wherein the discharge orifice is an orifice communicating with the ambient atmosphere at pressure Pa, and in that P + c=Ps−Pa.
Claim 8
Dependent Claim
85 words
The system of claim 6 , wherein the second valve comprises a second shutter having a weight and which can move between a lower shut-off position and an upper flow position under the action of a negative difference P − between the pressures in part of the duct and at the intake orifice, acting against the action of the weight of the second shutter, the second shutter being of a mass selected to balance the action of a predetermined negative pressure difference P − c.
Claim 9
Dependent Claim
82 words
The system of claim 2 , wherein the second valve comprises a second shutter having a weight and which can move between a lower shut-off position and an upper flow position under the action of a negative difference P − between the pressures in part of the duct and at the intake orifice, acting against the action of the second shutter, the second shutter being of a mass selected to balance the action of a predetermined negative pressure difference P − c.
Claim 10
Dependent Claim
39 words
The system of claim 2 , further comprising means for connecting the inlet of the pressure-regulating device to the source of gas under pressure, and a pipe placing the outlet of the pressure-regulating device in communication with the container.
Claim 11
Dependent Claim
17 words
The system of claim 9 , wherein the gas supplied to the container is an inert gas.
Claim 12
Dependent Claim
82 words
The system of claim 1 , wherein the second valve comprises a second shutter having a weight and which can move between a lower shut-off position and an upper flow position under the action of a negative difference P − between the pressures in part of the duct and at the intake orifice, acting against the action of the second shutter, the second shutter being of a mass selected to balance the action of a predetermined negative pressure difference P − c.
Claim 13
Dependent Claim
20 words
The system of claim 11 , wherein the second shutter is positioned on a seat intended to be substantially horizontal.
Claim 14
Dependent Claim
27 words
The system of claim 12 , wherein the intake orifice is an orifice communicating with the ambient atmosphere at pressure Pa, and in that P − c=Pi−Pa.
Claim 15
Dependent Claim
27 words
The system of claim 11 , wherein the intake orifice is an orifice communicating with the ambient atmosphere at pressure Pa, and in that P − c=Pi−Pa.
Claim 16
Dependent Claim
39 words
The system of claim 1 , further comprising means for connecting the inlet of the pressure-regulating device to the source of gas under pressure, and a pipe placing the outlet of the pressure-regulating device in communication with the container.
Claim 17
Dependent Claim
48 words
The system of claim 15 , wherein the connecting means comprises a means for expanding a gas to a datum pressure Pc which lies approximately between Pi and Ps disposed in the connecting means between the inlet of the pressure-regulating device and the source of gas under pressure.
Claim 18
Dependent Claim
62 words
The system of claim 16 , further comprising: a working liquid in the container; and a means for dispensing the working liquid from the container, the means for dispensing in fluid communication with the container, and wherein the system operates so as to fill in the container a vacuum produced as a result of the withdrawing of the liquid from the container.
Claim 19
Dependent Claim
22 words
The system of claim 16 , wherein the datum pressure Pc which lies approximately between Pi and Ps is close to Ps.
Claim 20
Dependent Claim
61 words
The system of claim 15 , further comprising: a working liquid in the container; and a means for dispensing the working liquid from the container, the dispensing means in fluid communication with the container, and wherein the system operates so as to fill in the container a vacuum produced as a result of the withdrawing of the liquid from the container.
Claim 21
Dependent Claim
17 words
The system of claim 15 , wherein the gas supplied to the container is an inert gas.
References Cited (Backward Citations)
US1628069A
Cited
US3380462A
Cited
US3814123A
Cited
FR2239630A1
Cited
US4266568A
Cited
FR2501326A1
Cited
FR2560340A1
Cited
US4859375A
Cited
US5356045A
Cited
WO1994013988A1
Cited
US5623958A
Cited
FR2756466A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-04-02 | 2004-10-02 | 2005-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-04-02 | 2008-10-02 | 2009-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-04-02 | 2012-10-02 | 2013-04-03 | $7700.00 | Window Closed / Lapsed |