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US3578014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure regulator for pressurized-fluid circuits
Assignee: Individual
•
Filing: 1969-05-01
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Granted: 1971-05-11
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Expires: 1989-05-01
Abstract
Abstract Regulator for a pressurized-fluid circuit supplied by a pressure-elevating apparatus such as a compressor, said regulator comprising a measuring chamber which communicates with the fluid circuit and is provided with a pressure-gauge element for measuring the pressure within said fluid circuit, and a regulating chamber which is connected to the pressure-elevating apparatus and has an orifice for the admission of the fluid in the direction of the measuring chamber, a low-pressure discharge orifice and means actuated by the pressure-gauge element in order to shut off the discharge orifice when the pressure of the reservoir is lower than a minimum value and to open said orifice when the pressure of the reservoir is higher than a maximum value. The admission orifice and discharge orifice are located in oppositely-facing relation and the regulating chamber comprises a two-position obturator which is connected directly to the pressure-gauge element and selectively closes the admission orifice or the discharge orifice according as the pressure within the fluid circuit attains either the maximum or minimum value. According to a preferred embodiment, the discharge orifice of the regulating chamber opens into a reaction chamber having an orifice which provides a communication with the atmosphere, means being additionally provided for producing a timelag between connection of said reaction chamber to the atmosphere and opening of the discharge orifice of the regulating chamber.
Inventors
- 👤 Jean Gachot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:00
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/0616; G05D16/0619; G05D16/0622; G05D16/10; G05D16/101; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/2612; Y10T137/2615
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
293 words
A regulator to control the pressure in a pressurized fluid circuit supplied by a pressure-Elevating device such as a compressor, said regulator comprising: a measuring chamber having an outlet connected to said circuit, a pressure-sensing element disposed in said measuring chamber and having a wall subjected on one side to the pressure to be controlled in said circuit, means to exert on the other side of said wall of said sensing element a predetermined force opposing the pressure to be controlled in said circuit, said force being equal to the product of the effective area of said wall times a reference pressure, a regulating chamber having an inlet connected to said pressureelevating device, a first valve port between said regulating chamber and said measuring chamber, and a second valve port between said regulating chamber and a low pressure discharge outlet, said two valve ports being disposed in oppositely facing relation, a two-position obturating member in said regulating chamber, said member being mechanically coupled with said pressuresensing element and being arranged selectively to close said first or second valve port, according to whether the pressure to be controlled in said circuit is higher than a predetermined maximum or lower than a predetermined minimum, the ratio of the cross-sectional area of said first valve port to the effective area of said wall of said sensing element being equal to the ratio of the differences of said minimum pressure respectively to said reference pressure and to said low discharge pressure, and the ratio of the cross-sectional area of said second valve port to the effective area of said wall of said sensing element being equal to the ratio of the differences of said maximum pressure respectively to said reference pressure and to said low discharge pressure.
Claim 2
Dependent Claim
293 words
A regulator to control the pressure in a pressurized fluid circuit supplied by a pressure-Elevating device such as a compressor, said regulator comprising: a measuring chamber having an outlet connected to said circuit, a pressure-sensing element disposed in said measuring chamber and having a wall subjected on one side to the pressure to be controlled in said circuit, means to exert on the other side of said wall of said sensing element a predetermined force opposing the pressure to be controlled in said circuit, said force being equal to the product of the effective area of said wall times a reference pressure, a regulating chamber having an inlet connected to said pressureelevating device, a first valve port between said regulating chamber and said measuring chamber, and a second valve port between said regulating chamber and a low pressure discharge outlet, said two valve ports being disposed in oppositely facing relation, a two-position obturating member in said regulating chamber, said member being mechanically coupled with said pressuresensing element and being arranged selectively to close said first or second valve port, according to whether the pressure to be controlled in said circuit is higher than a predetermined maximum or lower than a predetermined minimum, the ratio of the cross-sectional area of said first valve port to the effective area of said wall of said sensing element being equal to the ratio of the differences of said minimum pressure respectively to said reference pressure and to said low discharge pressure, and the ratio of the cross-sectional area of said second valve port to the effective area of said wall of said sensing element being equal to the ratio of the differences of said maximum pressure respectively to said reference pressure and to said low discharge pressure.
Claim 3
Dependent Claim
29 words
A regulator in accordance with claim 1, wherein said pressure-sensing element comprises a bellows-type diaphragm filled with a gas at said reference pressure and comprising an automatic closure-filling valve.
Claim 4
Dependent Claim
46 words
A regulator in accordance with claim 1, wherein said pressure-sensing element comprises a bellows-type diaphragm filled with a gas at said reference pressure and comprising an internal spacer for limiting the extension of said bellows and guides for said spacer to prevent twisting of said bellows.
Claim 5
Dependent Claim
58 words
A regulator in accordance with claim 1, wherein said discharge orifice of the regulating chamber opens into a reaction chamber having an orifice which provides communication with the atmosphere, and wherein means are provided for producing a time lag between connection of said reaction chamber to the atmosphere and opening of said discharge orifice of the regulating chamber.
Claim 6
Dependent Claim
68 words
A regulator in accordance with claim 4, wherein said reaction chamber is constituted by a cylinder in which a piston rigidly fixed to said obturating member is capable of displacement and wherein said cylinder has slots for communication with the atmosphere, said slots being sealed off by the piston and freed only when a predetermined time interval has elapsed after the beginning of the travel of said piston.
Claim 7
Dependent Claim
37 words
A regulator in accordance with claim 1, wherein said pressure-sensing element comprises a hollow piston having one face subjected to the pressure to be controlled in said circuit and its other face subjected to said reference pressure.
Claim 8
Dependent Claim
31 words
A regulator in accordance with claim 6, and comprising an auxiliary chamber filled with a gas at said reference pressure and adapted to communicate with said other face of said piston.
Claim 9
Dependent Claim
37 words
A regulator in accordance with claim 6, and comprising a flexible wall separating the inside volume of said hollow piston which is filled with a liquid from an enclosure filled with a gas at said reference pressure.
Claim 10
Dependent Claim
44 words
A regulator in accordance with claim 1, wherein said pressure-sensing element comprises a flexible diaphragm having one face subjected to the pressure to be controlled in said circuit and its other face engaging an elastically deformable metallic capsule that bears on an adjustablE stop.
References Cited (Backward Citations)
US3149475A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |