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US3783900A
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US
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Stop cock
Assignee: Smiths Medical ASD Inc
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Filing: 1972-06-05
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Granted: 1974-01-08
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Expires: 1992-06-05
Abstract
Abstract A stop cock comprising a cup-shaped body having three ports and associated spigots formed at right angles to one another, and a plug disposed in the body and sealed thereto above said ports. The plug has a downwardly depending, generally cylindrical wall which defines a recess in the bottom of the plug, the wall being slotted to provide openings alignable with the ports. A stiffening element is inserted in the recess to provide assurance of sufficient radially outward pressure of said walls against the internal surface of said body to seal off said ports when the plug is rotated to a sealing position.
Inventors
- 👤 C Waldbillig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:51
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/08; F16K11/085; F16K11/0853; Y; Y10; Y10S; Y10S251/00; Y10S251/904; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86863; Y10T137/86871
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
110 words
A medical valve comprising, a generally cylindrical cup-shaped body having at least two diametrically opposed ports in the lower portion thereof, a plug rotatably mounted in said body, cooperating means on said plug and body respectively for forming a liquid-tight seal above said ports, the lower portion of said plug being formed by a generally cylindrical wall which defines a recess extending above said port locations, said wall having openings alignable with said ports to permit liquid to pass through said valve, and a stiffening element snugly fitting in said recess below said port locations to provide radially outward pressure of said wall against said body to seal said ports.
Claim 2
Dependent Claim
110 words
A medical valve comprising, a generally cylindrical cup-shaped body having at least two diametrically opposed ports in the lower portion thereof, a plug rotatably mounted in said body, cooperating means on said plug and body respectively for forming a liquid-tight seal above said ports, the lower portion of said plug being formed by a generally cylindrical wall which defines a recess extending above said port locations, said wall having openings alignable with said ports to permit liquid to pass through said valve, and a stiffening element snugly fitting in said recess below said port locations to provide radially outward pressure of said wall against said body to seal said ports.
Claim 3
Dependent Claim
37 words
A valve as in claim 1 in which said stiffening element comprises a disc disposed at the bottom of said plug, and at least one projection extending between said disc and the upper end of said recess.
Claim 4
Dependent Claim
37 words
A valve as in claim 1 further comprising, positioning means extending between said stiffening element and the upper end of said recess, said positioning means being out of a line between said openings in said plug walls.
Claim 5
Dependent Claim
30 words
A valve as in claim 3 in which the openings in said valve are formed by slots extending from the bottom of said plug to the top of said ports.
Claim 6
Dependent Claim
38 words
A valve as in claim 4 in which said stiffening element has at least one laterally projecting locator tab disposed in at least one of said slots to block rotation of said element with respect to said plug.
References Cited (Backward Citations)
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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) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |