US4214730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemically inert control valve
Assignee: Individual
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Filing: 1979-04-11
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Granted: 1980-07-29
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Expires: 1999-04-11
Abstract
Abstract A control valve, the internal wetted working parts of which are made of corrosion resistant material and which are completely enclosed by and easily removable from a steel or stainless steel pressure vessel, and which is capable of tight shut-off and which is able to offer accurate control of minute flowing quantities.
Inventors
- 👤 Hans D. Baumann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:07
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/04; F16K3/00; F16K3/30; F16K3/34
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
185 words
Chemically inert control valve comprising (a) housing having a longitudinal central bore extending throughout its lengths; (b) inlet and outlet end formed on said housing, said inlet and out ends adapted to be coupled in a pipe line; (c) a cylindrical insert removeably received in said central bore; (d) a central perpendicular cross-bore intersects both said housing and said insert and containing within a tubular packing arrangement consisting of an upper and a lower portion, separated by tubular spacer means having one or more communicating passages between its inner and outer periphery; (e) a plug slidably engaged within said packing arrangement, one lower terminating end of said plug arranged to selectively engage or disengage the lower portion of said packing arrangement; (f) at least one lower horizontal co-passage within said cylindrical insert and located below the lower portion of said packing arrangement for communication of fluid towards the central perpendicular cross-bore; (g) one or more upper horizontal passages within said cylindrical insert and communicating with said passages in the tubular spacer means; (h) means to position said plug; (i) means to compress said packing arrangement.
Claim 2
Dependent Claim
185 words
Chemically inert control valve comprising (a) housing having a longitudinal central bore extending throughout its lengths; (b) inlet and outlet end formed on said housing, said inlet and out ends adapted to be coupled in a pipe line; (c) a cylindrical insert removeably received in said central bore; (d) a central perpendicular cross-bore intersects both said housing and said insert and containing within a tubular packing arrangement consisting of an upper and a lower portion, separated by tubular spacer means having one or more communicating passages between its inner and outer periphery; (e) a plug slidably engaged within said packing arrangement, one lower terminating end of said plug arranged to selectively engage or disengage the lower portion of said packing arrangement; (f) at least one lower horizontal co-passage within said cylindrical insert and located below the lower portion of said packing arrangement for communication of fluid towards the central perpendicular cross-bore; (g) one or more upper horizontal passages within said cylindrical insert and communicating with said passages in the tubular spacer means; (h) means to position said plug; (i) means to compress said packing arrangement.
Claim 3
Dependent Claim
39 words
Chemically inert control valve comprising according to claim 1, wherein said plug incorporates at its lower terminating end a reduced cross-sectional portion to affect the rate of fluid passing through said lower portion of said packing arrangement when retracted.
Claim 4
Dependent Claim
25 words
Chemically inert control valve comprising according to claim 1, wherein said insert extends in length beyond the housing to engage sealingly with said piping system.
Claim 5
Dependent Claim
32 words
Chemically inert control valve comprising according to claim 1, wherein means for compressing said packing arrangement comprise a bonnet having a central longitudinal bore and which is threadingly engaged within said housing.
Claim 6
Dependent Claim
16 words
Chemically inert control valve comprising according to claim 4, wherein said bonnet contains additional packing means.
Claim 7
Dependent Claim
32 words
Chemically inert control valve comprising according to claim 1, wherein said means for positioning said valve plug consists of a valve stem suitably fastened to the upper terminating end of said plug.
Claim 8
Dependent Claim
24 words
Chemically inert control valve comprising according to claim 6, wherein additional means for limiting valve stroke are incorporated between the valve stem and plug.
Claim 9
Dependent Claim
41 words
Chemically inert control valve comprising according to claim 4, wherein the lower terminating end of said bonnet having a recessed enlarged bore whose terminating end is spaced to retain the means for limiting valve travel incorporated between valve stem and plug.
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) | 1983-07-29 | 1984-01-28 | 1984-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-29 | 1988-01-28 | 1988-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-29 | 1992-01-28 | 1992-07-29 | $7700.00 | Window Closed / Lapsed |