Patent US2591065A successfully refreshed from Google Patents.
Patent US5107697A successfully refreshed from Google Patents.
US5107697A
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US
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Tracer gas leak detection system
Assignee: Alcatel CIT SA
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Filing: 1990-10-22
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Granted: 1992-04-28
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Expires: 2010-10-22
Abstract
Abstract A tracer gas leak detection system for: a first duct provided with a pre-evacuation valve, enabling a test chamber to be connected to the suction of a pre-evacuation pump. A gas analyzer is connected to the suction of a mechanical secondary pump whose delivery is connected by a second duct to a primary pump. At least one connection is provided with an inlet valve connecting of the text chamber to the mechanical secondary pump and the system further includes a second mechanical secondary pump situated on the first duct downstream from the pre-evacuation valve.
Inventors
- 👤 Jacques Tallon
- 👤 Gilles Baret
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:52
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/04; G01M3/20; G01M3/202
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
121 words
A tracer gas leak detection system comprising: a first duct provided with a pre-evacuation valve and enabling a test chamber to be connected to the suction of a pre-evacuation pump; a gas analyzer connected to the suction of a first mechanical secondary pump whose delivery is connected by a second duct to a primary pump; and at least one connection provided with an inlet valve connecting said chamber to said mechanical second pump, wherein the system further includes a second mechanical secondary pump situated on said first duct, downstream from said pre-evacuation valve and wherein said connection provided with an inlet valve is a connection provided with a valve connecting said chamber to the suction of said first mechanical secondary pump.
Claim 2
Dependent Claim
121 words
A tracer gas leak detection system comprising: a first duct provided with a pre-evacuation valve and enabling a test chamber to be connected to the suction of a pre-evacuation pump; a gas analyzer connected to the suction of a first mechanical secondary pump whose delivery is connected by a second duct to a primary pump; and at least one connection provided with an inlet valve connecting said chamber to said mechanical second pump, wherein the system further includes a second mechanical secondary pump situated on said first duct, downstream from said pre-evacuation valve and wherein said connection provided with an inlet valve is a connection provided with a valve connecting said chamber to the suction of said first mechanical secondary pump.
Claim 3
Dependent Claim
43 words
A leak detection system according to claim 1, further including another connection provided with a valve directly connecting the delivery of the first-mentioned mechanical secondary pump to said first duct leading to the chamber under test, downstream from said second mechanical secondary pump.
Claim 4
Dependent Claim
59 words
A leak detection system according to claim 2, wherein said pre-evacuation pump and said primary pump are common and constitute a single primary pumping unit, and said system further comprising a valve between said single primary pumping unit and said second mechanical secondary pump and a valve between said single primary pumping unit and said first mechanical secondary pump.
References Cited (Backward Citations)
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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) | 1995-04-28 | 1995-10-28 | 1996-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-04-28 | 1999-10-28 | 2000-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-04-28 | 2003-10-28 | 2004-04-28 | $7700.00 | Window Closed / Lapsed |