Patent US3603471A successfully refreshed from Google Patents.
US3603471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Septum valves
Assignee: PRECISION SAMPLING CORP
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Filing: 1969-11-24
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Granted: 1971-09-07
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Expires: 1989-11-24
Abstract
Abstract Apparatus for containing fluids, i.e., liquids or gases, within a confined space. In one embodiment, the apparatus comprises a valve structure including a tubular member (with axial opening) which leads into an enclosed space which can contain fluid. A septum, and a stem, provided with a lateral opening therethrough, are integrally mounted or mounted in series. The stem is rotatably mounted within the wall of the tubular member for exposure of the septum to the valve exterior. Exposure of the septum in such manner permits injection or withdrawal of fluid from the enclosed space. In preferred embodiments, the septum is located within an axial opening through the valve stem and lies across the lateral opening of the stem to provide an effective leakproof seal. In other embodiments, the septum is contained within the tubular member in series with the stem. The valve, in all embodiment, is adaptable for use with containers of various types or for use in sample inlet systems, as conventionally used in modern analytical instruments.
Inventors
- 👤 Rano J Harris Sr
- 👤 Rano J Harris Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:46
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/50; B01L3/508; B01L3/5082; A; A61; A61M; A61M5/00; A61M5/178; A61M5/31; F; F16; F16K; F16K13/00; Y; Y10; Y10S; Y10S215/00; Y10S215/03
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
127 words
A valve for containing fluids within a confined space comprising, in combination, a tubular member formed by an enclosing wall providing an axial opening therethrough, the wall of said member also containing a lateral opening, a septum which lies across, covers and seals the axial opening through the said tubular member, a stem provided with a lateral opening therethrough rotatably mounted within the lateral opening in the wall of said tubular member whereby rotation of said stem to align the lateral opening of the stem and the axial tubular opening provides access for withdrawal and injection of fluids by penetration of the septum, after which time misalignment of said openings closes the valve and limits such exposure for maximum confinement of the fluids within the confined space.
Claim 2
Dependent Claim
127 words
A valve for containing fluids within a confined space comprising, in combination, a tubular member formed by an enclosing wall providing an axial opening therethrough, the wall of said member also containing a lateral opening, a septum which lies across, covers and seals the axial opening through the said tubular member, a stem provided with a lateral opening therethrough rotatably mounted within the lateral opening in the wall of said tubular member whereby rotation of said stem to align the lateral opening of the stem and the axial tubular opening provides access for withdrawal and injection of fluids by penetration of the septum, after which time misalignment of said openings closes the valve and limits such exposure for maximum confinement of the fluids within the confined space.
Claim 3
Dependent Claim
19 words
The apparatus of claim 1 wherein the septum is contained within an axial opening provided in the rotatable stem.
Claim 4
Dependent Claim
13 words
The apparatus of claim 1 wherein the septum and stem are in series.
Claim 5
Dependent Claim
15 words
The apparatus of claim 3 wherein the septum constitutes the outer member of the series.
Claim 6
Dependent Claim
27 words
The apparatus of claim 1 wherein the lower portion of the valve is flanged, the outer peripheral edge of the flange is recessed and contains an O-ring.
Claim 7
Dependent Claim
12 words
The apparatus of claim 5 wherein the O-ring is constructed of rubber.
Claim 8
Dependent Claim
95 words
The apparatus of claim 5 wherein a container is secured to the valve via an open-centered cap, the tubular portion of the valve being extended through the opening in the center of the cap, while the flanged portion is held in place atop the contained via threadable engagement between the cap and the top of the container, and whereby the downward pressure exerted by the cap causes extrusion of the O-ring against the internal surfaces of the cap and upon the lower portion of the flange to press the latter downwardly to seal the container.
Claim 9
Dependent Claim
15 words
The apparatus of claim 1 wherein the valve is provided within a sample inlet system.
Claim 10
Dependent Claim
27 words
The apparatus of claim 1 wherein the valve is constructed of a self-lubricating type of rigid plastic, with the exception of the septum which is of rubber.
Claim 11
Dependent Claim
11 words
The apparatus of claim 9 wherein the rigid plastic is Teflon.
References Cited (Backward Citations)
US3198368A
Cited
GB1024409A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |