Patent FR21441E successfully refreshed from Google Patents.
Patent US3765448A successfully refreshed from Google Patents.
US3765448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow control valve
Assignee: CHATHAM PRECISION Inc
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Filing: 1971-04-06
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Granted: 1973-10-16
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Expires: 1991-04-06
Abstract
Abstract Multiple embodiments of fluid flow control valves are disclosed to include a plurality of unique features including; an operating spindle mounted within the valve casing to provide protection for both the spindle and valve stem, means for indicating the position of the valve stem, e.g. a dial guage mounted directly on the stem or a two-stage scale mounted on the stem and on the valve operating spindle, a stem structure which accommodates flow path sizing as well as positive no-flow sealing without the use of soft seals, adjustment structure which eliminates tolerance problems resulting from manufacturing, and replaceable flow control apparatus to permit use of a single basic valve to provide flow control in a wide range of circumstances. Certain of the above-listed features are useful in embodiments of the valve suitable for ordinary known uses and others are particularly useful in precision metering valves of the type which are used to meter accurately small amounts of fluid across a high pressure drop or small amounts of fluid from atmosphere into a hard vacuum.
Inventors
- 👤 R Dussia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:15
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/10; F16K1/00; F16K1/32; F16K1/34; F16K1/36; F16K1/38; F16K37/00; F16K37/0008; F16K37/0016; Y; Y10; Y10S; Y10S251/00; Y10S251/903; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8225; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18672; Y10T74/18752
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
181 words
A flow control valve comprising: a casing having a longitudinally extending bore formed therein; a fluid flow path formed in said casing said fluid flow path including an inlet port, an outlet port and a passage extending between said inlet port and said outlet port, said longitudinally extending bore in said casing being in communication with said fluid flow path, and said passage being defined at least in part by an elongated tube disposed within said casing; a longitudinally extending stem disposed for longitudinally axial displacement within said longitudinally extending bore; at least one aperture formed in said casing; means disposed within said casing for displacing said stem within said bore, said means for displacing said stem being accessible to an operator through said at least one aperture; means engaging said stem for cooperating with said elongated tube to control the flow of fluid between said inlet port and said outlet port; and means for indicating the longitudinal position of said stem, said means for indicating comprising a dial gauge mounted on said casing means and operably connected to said stem.
Claim 2
Dependent Claim
181 words
A flow control valve comprising: a casing having a longitudinally extending bore formed therein; a fluid flow path formed in said casing said fluid flow path including an inlet port, an outlet port and a passage extending between said inlet port and said outlet port, said longitudinally extending bore in said casing being in communication with said fluid flow path, and said passage being defined at least in part by an elongated tube disposed within said casing; a longitudinally extending stem disposed for longitudinally axial displacement within said longitudinally extending bore; at least one aperture formed in said casing; means disposed within said casing for displacing said stem within said bore, said means for displacing said stem being accessible to an operator through said at least one aperture; means engaging said stem for cooperating with said elongated tube to control the flow of fluid between said inlet port and said outlet port; and means for indicating the longitudinal position of said stem, said means for indicating comprising a dial gauge mounted on said casing means and operably connected to said stem.
Claim 3
Dependent Claim
26 words
A flow control valve according to claim 1 including means disposed on said longitudinally extending bore for engaging said stem to restrict said stem against rotation.
Claim 4
Dependent Claim
168 words
A flow control valve comprising: a casing having a longitudinally extending bore formed therein; a fluid flow path formed in said casing, said fluid flow path including an inlet port, an outlet port and a passage extending between said inlet port and said outlet port, said longitudinally extending bore in said casing being in communication with said fluid flow path; a longitudinally extending stem disposed for longitudinally axial displacement within said bore; flow control means for controlling the flow of fluid between said inlet port and said outlet port, said flow control means being operable in response to the longitudinal displacement of said stem within said bore; means for restraining said stem against rotational movement within said bore; means disposed within said casing for imparting longitudinal displacement to said stem; and means for indicating the longitudinal position of said stem, said means for indicating the longitudinal position of said stem comprising a dial gauge mounted on said casing means, said dial gauge being operably connected to said stem.
Claim 5
Dependent Claim
168 words
A flow control valve comprising: a casing having a longitudinally extending bore formed therein; a fluid flow path formed in said casing, said fluid flow path including an inlet port, an outlet port and a passage extending between said inlet port and said outlet port, said longitudinally extending bore in said casing being in communication with said fluid flow path; a longitudinally extending stem disposed for longitudinally axial displacement within said bore; flow control means for controlling the flow of fluid between said inlet port and said outlet port, said flow control means being operable in response to the longitudinal displacement of said stem within said bore; means for restraining said stem against rotational movement within said bore; means disposed within said casing for imparting longitudinal displacement to said stem; and means for indicating the longitudinal position of said stem, said means for indicating the longitudinal position of said stem comprising a dial gauge mounted on said casing means, said dial gauge being operably connected to said stem.
Claim 6
Dependent Claim
177 words
A flow control valve comprising: a casing having a longitudinally eXtending bore formed therein; a fluid flow path formed in said casing, said fluid flow path including an inlet port, an outlet port and a passage extending between said inlet port and said outlet port, at least a portion of said passage being defined by an elongated tube disposed within said bore, said longitudinally extending bore in said casing being in communication with said fluid flow path; a longitudinally extending stem disposed for longitudinally axial displacement within said bore; flow control means for controlling the flow of fluid between said inlet port and said outlet port, said flow control means including means disposed on said stem for varying the flow of fluid through said elongated tube, said flow control means being operable in response to the longitudinal displacement of said stem within said bore; means for restraining said stem against rotational movement within said bore; means disposed within said casing for imparting longitudinal displacement to said stem; and means for indicating the longitudinal position of said stem.
Claim 7
Dependent Claim
177 words
A flow control valve comprising: a casing having a longitudinally eXtending bore formed therein; a fluid flow path formed in said casing, said fluid flow path including an inlet port, an outlet port and a passage extending between said inlet port and said outlet port, at least a portion of said passage being defined by an elongated tube disposed within said bore, said longitudinally extending bore in said casing being in communication with said fluid flow path; a longitudinally extending stem disposed for longitudinally axial displacement within said bore; flow control means for controlling the flow of fluid between said inlet port and said outlet port, said flow control means including means disposed on said stem for varying the flow of fluid through said elongated tube, said flow control means being operable in response to the longitudinal displacement of said stem within said bore; means for restraining said stem against rotational movement within said bore; means disposed within said casing for imparting longitudinal displacement to said stem; and means for indicating the longitudinal position of said stem.
Claim 8
Dependent Claim
52 words
A flow control valve according to claim 4 including securing means mounted on said casing for selectively engaging and disengaging said tube, said securing means for engaging said elongated tube to secure said tube within said bore and for disengaging said elongated tube to permit removal of said tube from said bore.
Claim 9
Dependent Claim
55 words
A flow control valve according to claim 4 including: a retainer plug disposed within said longitudinally extending bore, said retainer plug defining means for mounting said elongated tube, and means disposed on the surface of said longitudinally extending bore for selectively engaging said retainer plug to position said retainer plug within said longitudinally extending bore.
Claim 10
Dependent Claim
44 words
A flow control valve according to claim 4 wherein said means disposed on said stem comprises a pin extending from the end of said stem, saidd pin being reciprocable into and out of said tube in response to the axial displacement of said stem.
Claim 11
Dependent Claim
39 words
A flow control valve according to claim 20 wherein said pin is slidably received within a bore formed in the end of said stem, and further including means for releasably securing said pin within said bore in said stem.
Claim 12
Dependent Claim
111 words
A flow control valve according to claim 4 and further including a pin disposed within said elongated tube, said pin cooperating with said tube to define a generally annular fluid flow path, and wherein said means disposed on said stem comprises a conical bore formed in the end of said stem, and wherein said conical bore is selectively engageable and disengageable with said tube in response to the axial displacement of said stem, said engagement of said conical bore for causing displacement of said tube toward and away from said pin to vary the size of said annular fluid flow path whereby to vary the rate of flow of fluid therethrough.
Claim 13
Dependent Claim
31 words
A flow control valve according to claim 9 wherein said pin is slidably received within said elongated tube, and further including means for releasably securing said pin in said elongated tube.
Claim 14
Dependent Claim
60 words
A flow control valve according to claim 4 and further including: a conical bore formed in the end of said stem, said pin extending axially from the base of said conical bore, said conical bore for engaging said tube when said pin is fully inserted in said tube whereby to displace said tube against the circumferential surface of said pin.
Claim 15
Dependent Claim
249 words
A flow control valve comprising: a casing including a cylinder portion and a body portion, said cylinder portion for defining a longitudinally axially extending chamber, said body portion being rigidly secured to said cylinder portion in one end of said chamber; a spindle disposed within said chamber, said spindle being secured within said chamber by a spindle retainer which is threadedly secured to said cylinder portion within said chamber, said spindle being mounted for rotation within said chamber; at least one aperture formeD in said cylinder portion, said aperture for providing finger access to said spindle from outside said casing; a longitudinally axially extending bore formed through said spindle, spindle retainer and body portion; a fluid flow path formed in said body portion, said fluid flow path including an inlet port, an outlet port, and passage means extending between said inlet and outlet ports; an elongated tube disposed within said longitudinally axially extending bore, said elongated tube comprising at least a portion of said passage; a longitudinally axially extending stem disposed within said longitudinally axially extending bore for displacement therein; means disposed on said stem for selectively interrupting the flow of fluid through said elongated tube, said means for selectively interrupting being operable in response to the rotation of said spindle within said chamber; and means for indicating the longitudinal position of said stem, said means for indicating the longitudinal position of said stem comprising a dial gauge mounted on said casing means and operably connected to said stem.
Claim 16
Dependent Claim
249 words
A flow control valve comprising: a casing including a cylinder portion and a body portion, said cylinder portion for defining a longitudinally axially extending chamber, said body portion being rigidly secured to said cylinder portion in one end of said chamber; a spindle disposed within said chamber, said spindle being secured within said chamber by a spindle retainer which is threadedly secured to said cylinder portion within said chamber, said spindle being mounted for rotation within said chamber; at least one aperture formeD in said cylinder portion, said aperture for providing finger access to said spindle from outside said casing; a longitudinally axially extending bore formed through said spindle, spindle retainer and body portion; a fluid flow path formed in said body portion, said fluid flow path including an inlet port, an outlet port, and passage means extending between said inlet and outlet ports; an elongated tube disposed within said longitudinally axially extending bore, said elongated tube comprising at least a portion of said passage; a longitudinally axially extending stem disposed within said longitudinally axially extending bore for displacement therein; means disposed on said stem for selectively interrupting the flow of fluid through said elongated tube, said means for selectively interrupting being operable in response to the rotation of said spindle within said chamber; and means for indicating the longitudinal position of said stem, said means for indicating the longitudinal position of said stem comprising a dial gauge mounted on said casing means and operably connected to said stem.
Claim 17
Dependent Claim
163 words
A flow control valve comprising: a casing having a longitudinally extending bore formed therein; a fluid flow path formed in said casing, said fluid flow path including an inlet port, an outlet port and a passage extending between said inlet port and said outlet port, said longitudinally extending bore in said casing being in communication with said fluid flow path; an elongated tube disposed within said casing, said elongated tube defining at least a portion of said fluid flow path; a longitudinally extending stem disposed for longitudinally axial displacement within said bore; flow control means for controlling the flow of fluid through said elongated tube, said flow control means being operable in response to the longitudinal displacement of said stem within said bore; means for imparting longitudinal displacement to said stem; and means for indicating the longitudinal position of said stem, said means for indicating the longitudinal position of said stem comprising a dial gauge mounted on said casing and engaging said stem.
Claim 18
Dependent Claim
163 words
A flow control valve comprising: a casing having a longitudinally extending bore formed therein; a fluid flow path formed in said casing, said fluid flow path including an inlet port, an outlet port and a passage extending between said inlet port and said outlet port, said longitudinally extending bore in said casing being in communication with said fluid flow path; an elongated tube disposed within said casing, said elongated tube defining at least a portion of said fluid flow path; a longitudinally extending stem disposed for longitudinally axial displacement within said bore; flow control means for controlling the flow of fluid through said elongated tube, said flow control means being operable in response to the longitudinal displacement of said stem within said bore; means for imparting longitudinal displacement to said stem; and means for indicating the longitudinal position of said stem, said means for indicating the longitudinal position of said stem comprising a dial gauge mounted on said casing and engaging said stem.
References Cited (Backward Citations)
US2564066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |