Patent US3757981A successfully refreshed from Google Patents.
US3757981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valves and valve needle syringes
Assignee: PRECISION SAMPLING CORP
•
Filing: 1970-11-18
•
Granted: 1973-09-11
•
Expires: 1990-11-18
Abstract
Abstract A valve, particularly in combination with a needle syringe, for containing fluids, i.e., liquids or gases, within a confined space. The valve per se includes a body comprising a tubular member (e.g., the barrel of a syringe), which contains an inner resilient tubular member within its axial opening. A lateral opening is provided within the walls of both the tubular members and a stem, containing a cut-away portion or lateral opening, is slidably mounted within the laterally oriented wall opening of the tubular members for opening and closing the valve. In another embodiment, the valve is employed in combination with a container. In this combination, the valve body contains, additionally, a cylindrically shaped septum mounted in series with the stem. The septum, contained within an intersecting passageway, lies across the opening or passageway through the valve body to provide an effective leak-proof seal. The valve can be opened to permit exposure of the septum to the valve exterior. Exposure of the septum in such manner permits withdrawal or injection of fluid from the enclosed container. The valve is also adaptable for use with conduits of various types, and can be employed, e.g., in sample inlet systems as conventionally used in modern analytical instruments.
Inventors
- 👤 Harris R Sr
- 👤 Harris R Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:54
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/56; B01L3/567; A; A61; A61M; A61M5/00; A61M5/178; A61M5/31; B01L3/50; B01L3/508; B01L3/5082; F; F16; F16K; F16K13/00; A61M2005/3128; Y; Y10; Y10S; Y10S215/00; Y10S215/03
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
145 words
A valve suitable for fitting upon an enclosure within which fluid can be placed and contained comprising, in combination, a tubular member formed by an enclosing wall providing an axial opening therethrough, a lateral opening within the wall of said tubular member which intersects with the axial opening through the said tubular member, a stem, provided with a lateral opening therein, slidably mounted within the said lateral opening through the tubular member, a septum which lies across, covers and seals a section of the axial opening through the tubular member, whereby movement of said stem to align the lateral opening of the stem and the axial opening opens the valve such that penetration of the septum can be made for injection of fluid, and misalignment of the lateral opening and axial opening closes the valve and prevents ingress or egress of fluids through the valve.
Claim 2
Dependent Claim
145 words
A valve suitable for fitting upon an enclosure within which fluid can be placed and contained comprising, in combination, a tubular member formed by an enclosing wall providing an axial opening therethrough, a lateral opening within the wall of said tubular member which intersects with the axial opening through the said tubular member, a stem, provided with a lateral opening therein, slidably mounted within the said lateral opening through the tubular member, a septum which lies across, covers and seals a section of the axial opening through the tubular member, whereby movement of said stem to align the lateral opening of the stem and the axial opening opens the valve such that penetration of the septum can be made for injection of fluid, and misalignment of the lateral opening and axial opening closes the valve and prevents ingress or egress of fluids through the valve.
Claim 3
Dependent Claim
39 words
The apparatus of claim 1 wherein the tubular member is comprised of a pair of members, one fitted snugly inside tHe other, the outer member is constituted of metal and the inner member is constituted of a resilient material.
Claim 4
Dependent Claim
18 words
The apparatus of claim 2 wherein the resilient material of which the inner member is composed is Teflon.
Claim 5
Dependent Claim
21 words
The apparatus of claim 1 wherein the tubular member contains a second lateral opening therethrough, and the septum is fitted therein.
Claim 6
Dependent Claim
211 words
A valve suitable for fitting upon the enclosing wall which forms the neck of a bottle to provide an enclosure therewith, such that fluids confined with said bottle can be permitted ingress and egress therefrom only through the opening and closing of said valve, comprising in combination a tubular member formed by an enclosing wall providing an axial opening therethrough, a flange formed by an outwardly flared wall portion of said tubular member, the flange being located at the lower end of said tubular member and adapted for contact with the enclosing wall which forms the neck of said bottle, a lateral opening within the wall of said tubular member which intersects with the axial opening through the said tubular member, a stem provided with a lateral opening therein slidably mounted within the lateral opening through said tubular member, a septum which lies across, covers and seals a section of the axial opening through the tubular member, whereby movement of said stem to align the lateral opening of the stem and the axial opening opens the valve that penetration of the septum can be made for withdrawal of fluids, and misalignment of said lateral opening and axial opening closes the valve and prevents ingress and egress of fluids from the bottle.
Claim 7
Dependent Claim
211 words
A valve suitable for fitting upon the enclosing wall which forms the neck of a bottle to provide an enclosure therewith, such that fluids confined with said bottle can be permitted ingress and egress therefrom only through the opening and closing of said valve, comprising in combination a tubular member formed by an enclosing wall providing an axial opening therethrough, a flange formed by an outwardly flared wall portion of said tubular member, the flange being located at the lower end of said tubular member and adapted for contact with the enclosing wall which forms the neck of said bottle, a lateral opening within the wall of said tubular member which intersects with the axial opening through the said tubular member, a stem provided with a lateral opening therein slidably mounted within the lateral opening through said tubular member, a septum which lies across, covers and seals a section of the axial opening through the tubular member, whereby movement of said stem to align the lateral opening of the stem and the axial opening opens the valve that penetration of the septum can be made for withdrawal of fluids, and misalignment of said lateral opening and axial opening closes the valve and prevents ingress and egress of fluids from the bottle.
Claim 8
Dependent Claim
26 words
The apparatus of claim 5 wherein the tubular member is provided with a second lateral opening and the septum is located within said second lateral opening.
Claim 9
Dependent Claim
24 words
The apparatus of claim 6 wherein the septum is the outer member of the series constituting the septum and lateral opening within the stem.
Claim 10
Dependent Claim
13 words
The apparatus of claim 5 wherein the tubular member is constituted of Teflon.
Claim 11
Dependent Claim
105 words
The apparatus of claim 5 wherein the outer peripheral edge of the flange located on the lower portion of the valve is recessed and contains an O-ring, and the valve can be secured to the bottle via an open-centered cap, the tubular portion of the valve being extendable through the opening in the center of the cap, while the flanged portion is held in place atop the container 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 to seal the bottle.
Claim 12
Dependent Claim
66 words
The apparatus of claim 5 wherein that portion of the valve constituting the lowermost portion of the tubular member is projected below the flange and is provided with a circumferential groove within which an O-ring can be fitted, and the valve can thereby be fitted into and sealed within the bottle by pressing the lowermost portion of the tubular member into the neck of the bottle.
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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |