Patent US4281935A successfully refreshed from Google Patents.
US4281935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Additive injection valve
Assignee: EIDP Inc
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Filing: 1980-01-25
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Granted: 1981-08-04
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Expires: 2000-01-25
Abstract
Abstract A valve for adding ingredients to or sampling the fluid flowing through the valve includes an adjustable solid stem which can be extended through the flow path of a pipeline to form a seal with a seat positioned directly opposite the stem. An injection nozzle is fitted into the seat to permit addition of ingredients or sampling of the fluid when the stem is retracted from the seat. When the stem is seated, flow still occurs in the flow path.
Inventors
- 👤 Gregory D. Cramer
- 👤 Irvin B. King
- 👤 Robert D. Sauerbrunn
- 👤 Albert T. Strand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:39
CPC Classifications
G; G01; G01N; G01N35/00; G01N35/10; G01N35/1095; G01N35/1097; B; B01; B01J; B01J4/00; B01J4/001; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4245; Y10T137/4273; Y10T137/428; Y10T137/4322; Y10T137/4329; Y10T137/6416; Y10T137/6579; Y10T137/8593; Y10T137/87571; Y10T137/87652; Y10T137/8766; Y10T137/87676
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
103 words
A valve for adding ingredients to or sampling the fluid flowing through the valve comprising: a body member having a fluid flow path therethrough from an inlet end to an outlet end; a valve stem connected to the body and movable through said flow path to engage a valve seat located directly opposite said valve stem in said body member, said valve seat having an upper surface exposed to said flow path, said seat having a passage therethrough extending from said upper surface; and removable tubing closely fitting in said passage extending from said upper surface to a location outside said body member.
Claim 2
Dependent Claim
103 words
A valve for adding ingredients to or sampling the fluid flowing through the valve comprising: a body member having a fluid flow path therethrough from an inlet end to an outlet end; a valve stem connected to the body and movable through said flow path to engage a valve seat located directly opposite said valve stem in said body member, said valve seat having an upper surface exposed to said flow path, said seat having a passage therethrough extending from said upper surface; and removable tubing closely fitting in said passage extending from said upper surface to a location outside said body member.
Claim 3
Dependent Claim
28 words
The valve as defined in claim 1, said upper surface of said seat and the portion of the valve stem which engages said upper surface being complimentary contoured.
Claim 4
Dependent Claim
21 words
The valve as defined in claim 1, including a flow inverter located in said flow path downstream of said valve seat.
Claim 5
Dependent Claim
20 words
The valve as defined in claim 1, said stem being at a location intermediate said inlet and said outlet ends.
Claim 6
Dependent Claim
15 words
The valve as defined in claim 1, said upper surface protruding into said flow path.
Claim 7
Dependent Claim
146 words
A valve for adding ingredients to or sampling the fluid flowing through the valve comprising: a body member having a fluid flow path therethrough from an inlet to an outlet; a two-pieced valve stem connected to the body and movable through said flow path to engage a valve seat located directly opposite said valve stem in said body member, said valve seat having an upper surface protruding into said flow path, said seat having a passage therethrough extending from said upper surface; removable tubing closely fitting in said passage extending from said upper surface to a location outside said body member; and means coupling the two pieces of said valve stem together for permitting independent rotation and constrained advancement of said pieces whereby the stem may be advanced to said valve seat surface and then the valve stem may be rotated relative to the valve seat.
Claim 8
Dependent Claim
146 words
A valve for adding ingredients to or sampling the fluid flowing through the valve comprising: a body member having a fluid flow path therethrough from an inlet to an outlet; a two-pieced valve stem connected to the body and movable through said flow path to engage a valve seat located directly opposite said valve stem in said body member, said valve seat having an upper surface protruding into said flow path, said seat having a passage therethrough extending from said upper surface; removable tubing closely fitting in said passage extending from said upper surface to a location outside said body member; and means coupling the two pieces of said valve stem together for permitting independent rotation and constrained advancement of said pieces whereby the stem may be advanced to said valve seat surface and then the valve stem may be rotated relative to the valve seat.
References Cited (Backward Citations)
US582507A
Cited
US1489990A
Cited
US2177265A
Cited
US3371680A
Cited
US3470912A
Cited
GB1205675A
Cited
US3664638A
Cited
US3716346A
Cited
US4026324A
Cited
US4195654A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-03 | 1985-02-02 | 1985-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-03 | 1989-02-02 | 1989-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-03 | 1993-02-02 | 1993-08-04 | $7700.00 | Window Closed / Lapsed |