Patent US3880401A successfully refreshed from Google Patents.
US3880401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow metering and shut-off valve
Assignee: Individual
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Filing: 1973-10-01
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Granted: 1975-04-29
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Expires: 1993-10-01
Abstract
Abstract A combined flow metering and shut-off valve having inner and outer valve parts which are axially movable relative to one another to effect relative axial movement of a metering valve plug on one part into and from a metering bore in the other part for regulating and blocking flow through the valve flow passage. The describing valve is an intravenous flow control valve in which the outer valve part is a plastic barrel containing the metering bore and the inner valve part is a plastic sleeve which carries the valve plug and is threaded to the barrel for relative axial movement of the barrel and sleeve by relative rotation of the same.
Inventors
- 👤 Harold L Wiltse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:49
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/14; A61M5/168; A61M5/16877; A61M5/16881; F; F16; F16K; F16K1/00; F16K1/32; F16K1/54; Y; Y10; Y10S; Y10S251/00; Y10S251/903; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8225; Y10T137/8275
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
226 words
A valve comprising outer and inner valve parts each comprising a one piece molded plastic part, said outer part comprising a tubular barrel having a relatively large diameter cylindrical portion at one end, a relatively small diameter nipple at the other end, and an axial flow metering bore between said ends opening at one end to the interior of said cylindrical portion and at the other end to an axial passage through said nipple, said inner part comprising a sleeve having an axial flow metering plug at one end slidably fitting in said metering bore, a cylindrical coupling portion at the other end, and an intermediate portion between said sleeve ends having an axially presented transverse wall about said plug, said cylindrical sleeve portion being threaded in said cylindrical barrel portion, whereby said metering plug is adjustable axially in said metering bore by relative rotation of said parts, said sleeve having a central passage opening at one end through said opposite sleeve end and at the other end through ports in said transverse sleeve wall to the interior of said cylindrical barrel portion about said metering plug, and said metering plug having at least one tapered axial flow passage opening laterally of said plug and endwise through the end of said plug, whereby axial adjustment of said metering plug regulates fluid flow through said metering bore.
Claim 2
Dependent Claim
226 words
A valve comprising outer and inner valve parts each comprising a one piece molded plastic part, said outer part comprising a tubular barrel having a relatively large diameter cylindrical portion at one end, a relatively small diameter nipple at the other end, and an axial flow metering bore between said ends opening at one end to the interior of said cylindrical portion and at the other end to an axial passage through said nipple, said inner part comprising a sleeve having an axial flow metering plug at one end slidably fitting in said metering bore, a cylindrical coupling portion at the other end, and an intermediate portion between said sleeve ends having an axially presented transverse wall about said plug, said cylindrical sleeve portion being threaded in said cylindrical barrel portion, whereby said metering plug is adjustable axially in said metering bore by relative rotation of said parts, said sleeve having a central passage opening at one end through said opposite sleeve end and at the other end through ports in said transverse sleeve wall to the interior of said cylindrical barrel portion about said metering plug, and said metering plug having at least one tapered axial flow passage opening laterally of said plug and endwise through the end of said plug, whereby axial adjustment of said metering plug regulates fluid flow through said metering bore.
Claim 3
Dependent Claim
39 words
A valve according to claim 1 wherein: said barrel has a valve seat about one end of said metering bore, and said sleeve has a valve face about the base of said metering plug engageable with said valve seat.
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) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |