Patent US1665988A successfully refreshed from Google Patents.
US4699356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sampling valve
Assignee: Individual
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Filing: 1986-06-13
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Granted: 1987-10-13
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Expires: 2006-06-13
Abstract
Abstract Fluid sampling valves having a central bore between an inlet and an outlet with a cylindrical valve stem having a conically-faced head which provides means for fluid sealing within the bore. Such valves are especially useful for sampling critical fluid systems such as aerospace hydraulic systems.
Inventors
- 👤 Barry C. Hargrove
- 👤 James D. Madden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:04
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/28; F16L37/38; F16L37/40; G; G01; G01N; G01N1/00; G01N1/02; G01N1/10; G01N1/20; G01N1/2035; G01N2001/205; G01N2001/2057; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/6184
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
215 words
A valve comprising: (a) a body having one end adapted to be connected to a fluid containing vessel and a sample end adapted to be removably sealed with a cap, wherein said sample end is structured to receive a hollow cylindrical sampling probe and wherein said body has a central bore interconnecting said sample end and said other end, (b) within said central bore, a cylindrical valve stem having proximate to said sample end a conically-faced head and proximate to said other end an enlarged cylindrical head, (c) means for providing a fluid seal within said bore between said body and said conically-faced head comprising a surface substantially perpendicular to the axis of the stem, said surface having a circular bore substantially in alignment with the axis of the stem wherein said conically-faced head will not pass through said bore, (d) means for providing a fluid seal within said bore between said body and said cylindrical head comprising an elastomeric O-ring, (e) at least two elastomeric O-rings located in said bore for providing a fluid seal during insertion of a hollow cylindrical sampling probe into the valve at said sample end, and (f) means for biasing said valve stem to provide sealing contact against said conically-faced head and slideable sealing contact with said cylindrical head.
Claim 2
Dependent Claim
215 words
A valve comprising: (a) a body having one end adapted to be connected to a fluid containing vessel and a sample end adapted to be removably sealed with a cap, wherein said sample end is structured to receive a hollow cylindrical sampling probe and wherein said body has a central bore interconnecting said sample end and said other end, (b) within said central bore, a cylindrical valve stem having proximate to said sample end a conically-faced head and proximate to said other end an enlarged cylindrical head, (c) means for providing a fluid seal within said bore between said body and said conically-faced head comprising a surface substantially perpendicular to the axis of the stem, said surface having a circular bore substantially in alignment with the axis of the stem wherein said conically-faced head will not pass through said bore, (d) means for providing a fluid seal within said bore between said body and said cylindrical head comprising an elastomeric O-ring, (e) at least two elastomeric O-rings located in said bore for providing a fluid seal during insertion of a hollow cylindrical sampling probe into the valve at said sample end, and (f) means for biasing said valve stem to provide sealing contact against said conically-faced head and slideable sealing contact with said cylindrical head.
Claim 3
Dependent Claim
12 words
The valve of claim 1 wherein said conical head is truncated conical.
Claim 4
Dependent Claim
29 words
The valve of claim 1 where said means for providing a fluid seal between said body and said conically-faced head comprises a circular internal peripheral surface of said bore.
Claim 5
Dependent Claim
73 words
The valve of claim 1 wherein said at least two O-rings are spaced apart in said bore by a distance of at least about three times the interior diameter of said O-rings thereby preventing fluid leakage from a hollow cylindrical sampling probe having an opening in the side wall of said probe at a distance from the end of said probe of less than about three times the outer diameter of said probe.
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) | 1990-10-12 | 1991-04-13 | 1991-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-12 | 1995-04-13 | 1995-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-12 | 1999-04-13 | 1999-10-13 | $7700.00 | Window Closed / Lapsed |