US4580452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for taking a liquid from a conduit which contains the liquid or for injecting a liquid into the conduit
Assignee: Individual
•
Filing: 1984-09-07
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Granted: 1986-04-08
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Expires: 2004-09-07
Abstract
Abstract A valve is mounted on a conduit from which it is desired to take a sample of the liquid which flows along the conduit. The body of the valve includes a through passage within which a needle valve member is removably inserted to close the valve. The body is provided, opposite said passage, with a collar in which is engaged the end of a rigid tube with a sampling vessel provided with a needle valve. Thus, it is possible to withdraw samples of the liquid into the vessel without any leakage of liquid and even without any emanation therefrom occuring, which is of the highest importance in the case of toxic or noxious liquids. Moreover, the device does not produce any dead volume of liquid which it would be necessary to purge before each taking or sampling of liquid from the conduit.
Inventors
- 👤 Guy Masson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:38
CPC Classifications
F; F17; F17D; F17D3/00; F17D3/10; F17D3/12; G; G01; G01N; G01N1/00; G01N1/02; G01N1/10; G01N1/20; G01N1/2035; G01N2001/1031; G01N2001/1037
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
170 words
A device for taking a sample of a liquid flowing through a conduit or for injecting a liquid into the conduit, comprising: A. a valve body including a wall forming a portion of said conduit, said wall having a sample passage therethrough including an opening through an outer surface of said wall; and B. a needle member operable from outside the valve body and removably passing through said passage to form a needle valve therewith, said needle member having one end thereof passing through said passage and located in flush engagement with said outer surface of said wall in a closed position of said needle valve so that said member completely occupies said opening in order to eliminate any dead volume within said passage isolated from said flow through said conduit in said closed position, which dead volume would otherwise expose a portion of the wall surrounding said passage to adhesion of static sample liquid in said closed position and would otherwise require purging of said passage between liquid samplings.
Claim 2
Independent Claim
170 words
A device for taking a sample of a liquid flowing through a conduit or for injecting a liquid into the conduit, comprising: A. a valve body including a wall forming a portion of said conduit, said wall having a sample passage therethrough including an opening through an outer surface of said wall; and B. a needle member operable from outside the valve body and removably passing through said passage to form a needle valve therewith, said needle member having one end thereof passing through said passage and located in flush engagement with said outer surface of said wall in a closed position of said needle valve so that said member completely occupies said opening in order to eliminate any dead volume within said passage isolated from said flow through said conduit in said closed position, which dead volume would otherwise expose a portion of the wall surrounding said passage to adhesion of static sample liquid in said closed position and would otherwise require purging of said passage between liquid samplings.
Claim 3
Dependent Claim
65 words
A device as claimed in claim 1, in which a rear part of a stem of the needle member passes through the wall of said body of the valve, which is cylindrical, at a point situated diametrically opposite to the point at which said passage is situated, a seal between the body of the valve and said needle member being ensured by a stuffing box.
Claim 4
Dependent Claim
68 words
A device as claimed in claim 2, in which said body of the valve is provided, at a location where said wall is traversed by the needle member, with an internally tapped bore in which is screwed a threaded portion of said stem of the needle member, so that rotation of the needle member in one sense or the other produces corresponding axial displacement of the needle member.
Claim 5
Dependent Claim
34 words
A device as claimed in claim 1, in which the needle is rigid with an axially deformable bellows the end of which is secured, in a sealed manner, to said body of the valve.
Claim 6
Dependent Claim
57 words
A device as claimed in claim 4, in which said body of the valve carries, rotatably mounted thereon, a control member which is screwed on a screw-threaded rear portion of an operating stem of the needle member, so that rotation of this control member, in one sense or the other, produces corresponding axial displacement of said stem.
Claim 7
Dependent Claim
65 words
A device as claimed in claim 4, in which the valve is provided with means enabling connection to a portion situated beyond the sealing bellows, with respect to its portion traversed by the liquid to be taken from the conduit, to a gas analyzer intended to detect any emanation of gas from the liquid to be taken and, hence, any leakage of the sealing bellows.
Claim 8
Dependent Claim
30 words
A device as claimed in claim 1, in which said valve is traversed by a conduit adapted for circulation of a heating fluid to heat the liquid to be taken.
Claim 9
Dependent Claim
51 words
A device as claimed in claim 1, which comprises a sampling vessel provided with a collar an end of which is arranged in such a way as to be able to come in close contact with the area of the body of the valve in which is disposed said through passage.
Claim 10
Dependent Claim
41 words
A device as claimed in claim 7, in which said body of the valve includes a second conduit opening adjacent the opening of the through passage, for enabling a cleaning liquid to be fed to the opening of said through passage.
Claim 11
Independent Claim
92 words
A device as claimed in claims 7 and 9, in which said collar of the sampling vessel is provided with a branch enabling the evacuation of said cleaning liquid, a valve serving to control the communication of the vessel with the outside being a three-way valve serving also to control the communication of said branch with the outside of the vessel, the arrangement being such that, according to the position of said three-way valve, either the vessel is open and the branch closed, or the vessel is closed and the branch open.
References Cited (Backward Citations)
US2041694A
Cited
US2691773A
Cited
US3278156A
Cited
SU363890A1
Cited
US3744319A
Cited
SU549706A1
Cited
US4150575A
Cited
US4320654A
Cited
US4458543A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-07 | 1989-10-07 | 1990-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-07 | 1993-10-07 | 1994-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-07 | 1997-10-07 | 1998-04-08 | $7700.00 | Window Closed / Lapsed |