Patent US3613729A successfully refreshed from Google Patents.
US3613729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve system
Assignee: Revvity Health Sciences Inc
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Filing: 1970-02-16
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Granted: 1971-10-19
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Expires: 1990-02-16
Abstract
Abstract A valve system adapted to automatically add solvents and/or reactants to a sample and a reactor by connecting multiple fluid inlets or outlets to a main flow path has an upper body with an open trough formed in the bottom surface thereof, a flexible, elastically deformable, membrane clamped between the bottom surface of the body and a lower block to close the open trough and provide a longitudinal flow path, and a plurality of ports extending into the body terminating at spaced points on its bottom surface, each port being separated from the flow path by surrounding partitions. Reciprocating actuators in the block below each port normally hold the membrane against the partitions to close the ports, and are selectively released to perit fluid flow between the flow path and various of the ports.
Inventors
- 👤 Ralph A Dora
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:07
CPC Classifications
G; G01; G01N; G01N35/00; G01N35/10; G01N35/1095; G01N35/1097; F; F16; F16K; F16K31/00; F16K31/44; F16K31/52; F16K31/524; F16K7/00; F16K7/12; F16K7/14; F16K7/16; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87917; Y10T137/88038
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
242 words
A valve system comprising a body, open through means formed in one surface of said body, a membrane positioned against said one surface of said body and acting as one wall of said trough means to provide a closed flow path, a plurality of ports extending into said body and terminating at spaced points on said one surface adjacent to said flow path, partition means separating each of said ports from said flow path at said spaced points, said membrane being elastically deformable in response to fluid pressure to move away from said partition means and allow fluid communication between said ports and said flow path, a plurality of movable means for contacting an opposite surface of said membrane and holding it in contact with each said partition means to close each said port from said flow path, actuator means engaging each said movable means for selectively opening and closing each of said ports to permit fluid flow between said flow path and any selected ports, said membrane being clamped between said body and a block, said block including a series of cylinders located in registration with each of said partition means, said movable means for closing said ports constituting plungers which are reciprocatingly mounted in said cylinders, and said plungers containing separate parts which are slidably interconnected with resilient spring means for transferring force to the part which bears against said membrane to force it in contact with said parTition means.
Claim 2
Dependent Claim
242 words
A valve system comprising a body, open through means formed in one surface of said body, a membrane positioned against said one surface of said body and acting as one wall of said trough means to provide a closed flow path, a plurality of ports extending into said body and terminating at spaced points on said one surface adjacent to said flow path, partition means separating each of said ports from said flow path at said spaced points, said membrane being elastically deformable in response to fluid pressure to move away from said partition means and allow fluid communication between said ports and said flow path, a plurality of movable means for contacting an opposite surface of said membrane and holding it in contact with each said partition means to close each said port from said flow path, actuator means engaging each said movable means for selectively opening and closing each of said ports to permit fluid flow between said flow path and any selected ports, said membrane being clamped between said body and a block, said block including a series of cylinders located in registration with each of said partition means, said movable means for closing said ports constituting plungers which are reciprocatingly mounted in said cylinders, and said plungers containing separate parts which are slidably interconnected with resilient spring means for transferring force to the part which bears against said membrane to force it in contact with said parTition means.
Claim 3
Dependent Claim
44 words
A valve system in accordance with claim 1 wherein one end of said flow path connects to a reactor, and wherein a separate valve in said valve system which is opened and closed by said membrane connects to said reactor and to a waste.
Claim 4
Dependent Claim
38 words
A valve system in accordance with claim 2 wherein s source of carrier gas is connected to the end of said flow path opposite to said one end to supply gas through said flow path to said reactor.
Claim 5
Dependent Claim
29 words
A valve system in accordance with claim 3 wherein means for introducing a sample is connected to said opposite end of said flow path through one of said ports.
Claim 6
Dependent Claim
186 words
In a valve system for predetermined addition of reactants selectively to a sample in a reactor, said valve system being adapted to be connected to a sample source, a plurality of reactant sources and reactor means, the combination comprising, a valve body having trough means defining a closed flow path, a plurality of ports extending into said path and terminating adjacent to said flow path, valve means separating each of said ports from the flow path, means connecting said sample source to one of said ports adjacent one end of the flow path, means connecting respective ones of said reactant sources to intermediate ones of said ports, means for selectively opening and closing said valve means for each of said ports to permit flow between the selected port and said flow path, and means for establishing a constant purge flow of carrier gas through the flow path from said sample holder end to the reactor end thereof so that said sample and reactants when introduced into the flow path upon opening of their respective valves are moved completely out of the flow path into said reactor.
Claim 7
Dependent Claim
186 words
In a valve system for predetermined addition of reactants selectively to a sample in a reactor, said valve system being adapted to be connected to a sample source, a plurality of reactant sources and reactor means, the combination comprising, a valve body having trough means defining a closed flow path, a plurality of ports extending into said path and terminating adjacent to said flow path, valve means separating each of said ports from the flow path, means connecting said sample source to one of said ports adjacent one end of the flow path, means connecting respective ones of said reactant sources to intermediate ones of said ports, means for selectively opening and closing said valve means for each of said ports to permit flow between the selected port and said flow path, and means for establishing a constant purge flow of carrier gas through the flow path from said sample holder end to the reactor end thereof so that said sample and reactants when introduced into the flow path upon opening of their respective valves are moved completely out of the flow path into said reactor.
Claim 8
Dependent Claim
121 words
A valve system as claimed in claim 5 wherein said trough means is formed in one surface of said body and said valve means comprises a membrane positioned against said one surface of the body acting as one wall of said trough means to provide the closed flow path, partition means separating each of said ports from said flow path, said membrane being elastically deformable in response to fluid pressure to move away from said partition means and allow fluid communication between said ports and said flow path, a plurality of movable means for contacting an opposite surface of said membrane and holding it in contact with each of said partition means to close each said ports from said flow path.
Claim 9
Dependent Claim
89 words
A valve system as claimed in claim 6 wherein said membrane is clamped between said body and a block, said block including a series of cylinders located in registration with each of said partition means, said movable means for closing said ports constituting plungers which are reciprocatingly mounted in said cylinders, means for biasing said plungers in a direction away from said partition means, and rotatable cam means for moving said plungers to open and close said ports in a predetermined selective manner during rotation of said cam means.
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) | 1974-10-18 | 1975-04-19 | 1975-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-18 | 1979-04-19 | 1979-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-18 | 1983-04-19 | 1983-10-19 | $7700.00 | Window Closed / Lapsed |