Patent US2489119A successfully refreshed from Google Patents.
US4354516A
Expired / Lapsed
US
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Automatic control valve
Assignee: Individual
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Filing: 1980-10-24
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Granted: 1982-10-19
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Expires: 2000-10-24
Abstract
Abstract A control valve for injecting dilute concentrations of liquid additives to a fluid flow in which a housing (10) is connected to a core member (12) and a piston valve (18) that is slidingly maintained within the core member is controlled in response to the movement of a shut-off member (14) pivotally connected to the housing.
Inventors
- 👤 Ronald Newell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:52
CPC Classifications
G; G05; G05D; G05D11/00; G05D11/003; B; B01; B01F; B01F25/00; B01F25/30; B01F25/31; F; F17; F17D; F17D3/00; F17D3/12; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2559; Y10T137/2564; Y10T137/2572
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
95 words
An automatic control valve for providing controlled amounts of liquid to a fluid stream, said valve comprising: a housing; a shut-off member pivotally connected to said housing; a piston valve having a valve stem that abuts said shut-off member such that said piston valve is responsive to the pivotal motion thereof; and a core member connected to said housing, said core member forming a seat for said valve and having a valve stem sleeve for maintaining valve stem and at least one metering channel passing through said core member and in communication with said housing.
Claim 2
Dependent Claim
95 words
An automatic control valve for providing controlled amounts of liquid to a fluid stream, said valve comprising: a housing; a shut-off member pivotally connected to said housing; a piston valve having a valve stem that abuts said shut-off member such that said piston valve is responsive to the pivotal motion thereof; and a core member connected to said housing, said core member forming a seat for said valve and having a valve stem sleeve for maintaining valve stem and at least one metering channel passing through said core member and in communication with said housing.
Claim 3
Dependent Claim
26 words
The valve of claim 1 wherein said core member includes a plurality of metering channels that are symmetrically arranged with respect to said valve stem sleeve.
Claim 4
Dependent Claim
26 words
The valve of claim 1 or 2 wherein the metering channel in said core member includes an enlarged cavity at the end adjacent the valve seat.
Claim 5
Dependent Claim
30 words
The valve of claim 1 or 2 wherein the shut-off member is provided with a notch in which the end of the valve stem abutting the shut-off member is maintained.
Claim 6
Dependent Claim
38 words
The control valve as set forth in claim 1 wherein said fluid stream comprises a flow of natural gas advancing through said housing past said shut-off member; and wherein said liquid is a rust-inhibiting or an odor-providing material.
Claim 7
Dependent Claim
22 words
The control valve as set forth in claim 5 wherein said liquid is selected from the group consisting of alcohol and mercaptian.
Claim 8
Dependent Claim
112 words
A control valve for automatically metering liquid into a fluid stream at a precisely controlled rate, said valve comprising: a housing; a shut-off member pivotally connected to said housing; a piston valve having a head and having a valve stem that abuts said shut-off member such that said piston valve is responsive to the pivotal motion thereof; and a core member that maintains said piston valve, said core member having a channel with a first port adjacent the interior of said housing and a second port adjacent the head of said piston valve, wherein said core member includes a plurality of channels that are symmetrically arranged with respect to said piston valve.
Claim 9
Dependent Claim
112 words
A control valve for automatically metering liquid into a fluid stream at a precisely controlled rate, said valve comprising: a housing; a shut-off member pivotally connected to said housing; a piston valve having a head and having a valve stem that abuts said shut-off member such that said piston valve is responsive to the pivotal motion thereof; and a core member that maintains said piston valve, said core member having a channel with a first port adjacent the interior of said housing and a second port adjacent the head of said piston valve, wherein said core member includes a plurality of channels that are symmetrically arranged with respect to said piston valve.
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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) | 1985-10-18 | 1986-04-19 | 1986-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-18 | 1990-04-19 | 1990-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-18 | 1994-04-19 | 1994-10-19 | $7700.00 | Window Closed / Lapsed |