Patent US4253518A successfully refreshed from Google Patents.
US4253518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling installation working through a change in phase
Assignee: Societe des Telephones Ericsson SA
•
Filing: 1979-01-26
•
Granted: 1981-03-03
•
Expires: 1999-01-26
Abstract
Abstract (a) A cooling installation working through a change in Phase. (b) An installation wherein the chamber is connected to an expansion vessel through a valve calibrated at a determined opening pressure depending on the nature of the heat-carrier fluid and on the maximal temperature desired within the chamber and/or on the element to be cooled, said expansion vessel carrying a means for draining off the contents of the expansion vessel.
Inventors
- 👤 Didier Minesi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:47
CPC Classifications
F; F28; F28D; F28D15/00; F28D15/02; F28D15/06; H; H10; H10W; H10W40/00; H10W40/70; H10W40/73; F28F; F28F2265/00; F28F2265/12; Y; Y10; Y10S; Y10S165/00; Y10S165/917
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
166 words
In a cooling installation operating through a liquid-vapor change in phase comprising a chamber (1) containing an element (2) to be cooled and a liquid (3) which is vaporizable by taking heat from element (2) and a vapor space (4) above liquid (3), a condensor (5) associated with chamber (1) for condensing vaporized liquid to its liquid state, the improvement comprising expansion means (6) connected to chamber (1) by valve means (8, 9) above the level of liquid (3), valve means (8, 9) being calibrated to open at a predetermined pressure which depends on the nature of liquid (3) and the desired temperature in chamber (1) or element (2), expansion means (6) being normally closed to the atmosphere surrounding chamber (1) and being expansible by vapor and air received from chamber (1) when valve means (8, 9) is opened, and vent means (12, 13) connected to expansion means (6) above the level of any condensed liquid for releasing air but not liquid from expansion means (6).
Claim 2
Dependent Claim
166 words
In a cooling installation operating through a liquid-vapor change in phase comprising a chamber (1) containing an element (2) to be cooled and a liquid (3) which is vaporizable by taking heat from element (2) and a vapor space (4) above liquid (3), a condensor (5) associated with chamber (1) for condensing vaporized liquid to its liquid state, the improvement comprising expansion means (6) connected to chamber (1) by valve means (8, 9) above the level of liquid (3), valve means (8, 9) being calibrated to open at a predetermined pressure which depends on the nature of liquid (3) and the desired temperature in chamber (1) or element (2), expansion means (6) being normally closed to the atmosphere surrounding chamber (1) and being expansible by vapor and air received from chamber (1) when valve means (8, 9) is opened, and vent means (12, 13) connected to expansion means (6) above the level of any condensed liquid for releasing air but not liquid from expansion means (6).
Claim 3
Dependent Claim
22 words
Cooling installation according to claim 1 wherein valve means (8, 9) is biased to its closed position by calibrated spring means (11).
Claim 4
Dependent Claim
20 words
Cooling installation according to claim 1 wherein vent means (12, 13) comprises a tube (12) provided with a valve (13).
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) | 1984-03-02 | 1984-09-01 | 1985-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-02 | 1988-09-01 | 1989-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-02 | 1992-09-01 | 1993-03-03 | $7700.00 | Window Closed / Lapsed |