US4077606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow control valve
Assignee: CHATHAM PRECISION Inc
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Filing: 1973-08-27
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Granted: 1978-03-07
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Expires: 1993-08-27
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. Jules Dussia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:53
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: 4
Claim 1
Independent Claim
271 words
A flow control valve comprising: casing means, having a longitudinally extending bore formed in said casing means, and having a longitudinally extending stem disposed for longitudinally axial displacement within said bore; a fluid flow path formed in said casing means, said fluid flow path including an inlet port, an outlet port, and passage means extending between said inlet port and said outlet port, said fluid flow path being in communication with said longitudinally extending bore and wherein said fluid flow path includes an elongated tube disposed in said bore and defines at least a portion of said passage; flow control means for controlling the flow of fluid between said inlet port and said outlet port, said flow control means including means for engaging said stem for cooperating with said elongated tube for varying a flow of fluid through said elongated tube wherein said means for engaging said stem comprises a pin extending from the end of said stem, said pin being reciprocable into and out of said tube in response to the axial displacement of said stem and said stem 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 engaging said tube when said pin is fully inserted whereby to displace the tube against the circumferential surface of said pin; and means for operating said flow control means, said means for operating being an engagement with said flow control means and being contained radially totally within said casing means and accessible to an operator through at least one aperture formed in said casing means.
Claim 2
Dependent Claim
271 words
A flow control valve comprising: casing means, having a longitudinally extending bore formed in said casing means, and having a longitudinally extending stem disposed for longitudinally axial displacement within said bore; a fluid flow path formed in said casing means, said fluid flow path including an inlet port, an outlet port, and passage means extending between said inlet port and said outlet port, said fluid flow path being in communication with said longitudinally extending bore and wherein said fluid flow path includes an elongated tube disposed in said bore and defines at least a portion of said passage; flow control means for controlling the flow of fluid between said inlet port and said outlet port, said flow control means including means for engaging said stem for cooperating with said elongated tube for varying a flow of fluid through said elongated tube wherein said means for engaging said stem comprises a pin extending from the end of said stem, said pin being reciprocable into and out of said tube in response to the axial displacement of said stem and said stem 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 engaging said tube when said pin is fully inserted whereby to displace the tube against the circumferential surface of said pin; and means for operating said flow control means, said means for operating being an engagement with said flow control means and being contained radially totally within said casing means and accessible to an operator through at least one aperture formed in said casing means.
Claim 3
Dependent Claim
354 words
A flow control valve comprising: a casing means, 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 and one end of said chamber; spindle means disposed totally within said chamber, said spindle means 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; and a longitudinally axially extending bore formed through said spindle, said spindle retainer and body portion; a longitudinally extending stem disposed within said bore, said longitudinally axially extending stem being axially displaceable within said bore; an elongated tube disposed within said bore; a pin extending from the end of said stem, said pin being reciprocable into and out of said tube in response to the axial displacement of said stem; a conical bore formed in the end of said stem, said pin extending axially from the base of said conical bore; at least one aperture formed in said cylinder portion, said aperture providing finger access to said spindle from outside said casing; 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 said outlet port wherein said longitudinally axially extending bore is in communication with said fluid flow path and wherein said fluid flow path includes said elongated tube disposed in said bore, said tube defining at least a portion of said passage wherein said pin is reciprocable into and out of said tube in response to the axial displacement of said stem and said bore engages said tube when said pin is fully inserted in said tube whereby to displace said tube against the circumferential surface of said pin; securing means mounted on said casing means for selectively engaging and disengaging said elongated 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 4
Dependent Claim
354 words
A flow control valve comprising: a casing means, 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 and one end of said chamber; spindle means disposed totally within said chamber, said spindle means 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; and a longitudinally axially extending bore formed through said spindle, said spindle retainer and body portion; a longitudinally extending stem disposed within said bore, said longitudinally axially extending stem being axially displaceable within said bore; an elongated tube disposed within said bore; a pin extending from the end of said stem, said pin being reciprocable into and out of said tube in response to the axial displacement of said stem; a conical bore formed in the end of said stem, said pin extending axially from the base of said conical bore; at least one aperture formed in said cylinder portion, said aperture providing finger access to said spindle from outside said casing; 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 said outlet port wherein said longitudinally axially extending bore is in communication with said fluid flow path and wherein said fluid flow path includes said elongated tube disposed in said bore, said tube defining at least a portion of said passage wherein said pin is reciprocable into and out of said tube in response to the axial displacement of said stem and said bore engages said tube when said pin is fully inserted in said tube whereby to displace said tube against the circumferential surface of said pin; securing means mounted on said casing means for selectively engaging and disengaging said elongated 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.
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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) | 1981-03-06 | 1981-09-05 | 1982-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-06 | 1985-09-05 | 1986-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-06 | 1989-09-05 | 1990-03-07 | $7700.00 | Window Closed / Lapsed |