US3910303A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Individual
•
Filing: 1974-06-07
•
Granted: 1975-10-07
•
Expires: 1994-06-07
Abstract
Abstract A valve mechanism comprising a spool supporting two valves which control flow between two inlets and an outlet. A diaphragm actuator is connected with the spool, with movement of the diaphragm actuator being controlled by fluid pressure in a control chamber. One fluid passage provides for flow from one chamber communicating with one inlet to the control chamber while another fluid passage provides for flow from the control chamber to this one chamber. Variable control valve means provide control over fluid flow through each of these fluid passages.
Inventors
- 👤 Sigge Rydberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:47
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/04; F16K11/048; F16K31/00; F16K31/12; F16K31/36; F16K31/365; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2564; Y10T137/2567; Y10T137/8593; Y10T137/86389; Y10T137/86405; Y10T137/86413
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
303 words
A valve comprising a housing having a first inlet for a first pressure medium and a second inlet for a second pressurre medium, said valve being arranged to direct said media alternately to a recipient at selected time intervals, characterized in that said valve further comprises a first chamber connected to the first inlet and a second chamber connected to said second inlet; an axially reciprocatingly movable valve spindle provided with a first valve body and arranged to sealingly abut in a first position of the valve spindle a first valve seat of a passage located between the first chamber and an outlet means and, in a second position of said valve spindle to rest at a distance from the first valve seat, a second valve body arranged to rest, in said first position of said valve spindle, at a distance from a second valve seat of a passage located between the second chamber and the outlet means and, in said second position of said valve spindle, to sealingly abut the second valve seat; a flexible diaphragm arranged to communicate at one side surface thereof with the interior of the second chamber and mounted to the valve spindle and being reciprocatingly movable in the axial direction of said spindle, said diaphragm communicating at its other side surface with a control chamber which is arranged to communicate via a first through-flow passage having a variable control valve means and a second through-flow passage having a second variable control valve means, with the first chamber and in that the first through-flow passage is provided with valve means which permit medium to flow from the first chamber to the control chamber and in that the second through-flow passage is provided with valve means to permit medium to flow from the control chamber to the first chamber.
Claim 2
Dependent Claim
303 words
A valve comprising a housing having a first inlet for a first pressure medium and a second inlet for a second pressurre medium, said valve being arranged to direct said media alternately to a recipient at selected time intervals, characterized in that said valve further comprises a first chamber connected to the first inlet and a second chamber connected to said second inlet; an axially reciprocatingly movable valve spindle provided with a first valve body and arranged to sealingly abut in a first position of the valve spindle a first valve seat of a passage located between the first chamber and an outlet means and, in a second position of said valve spindle to rest at a distance from the first valve seat, a second valve body arranged to rest, in said first position of said valve spindle, at a distance from a second valve seat of a passage located between the second chamber and the outlet means and, in said second position of said valve spindle, to sealingly abut the second valve seat; a flexible diaphragm arranged to communicate at one side surface thereof with the interior of the second chamber and mounted to the valve spindle and being reciprocatingly movable in the axial direction of said spindle, said diaphragm communicating at its other side surface with a control chamber which is arranged to communicate via a first through-flow passage having a variable control valve means and a second through-flow passage having a second variable control valve means, with the first chamber and in that the first through-flow passage is provided with valve means which permit medium to flow from the first chamber to the control chamber and in that the second through-flow passage is provided with valve means to permit medium to flow from the control chamber to the first chamber.
Claim 3
Dependent Claim
30 words
A valve according to claim 1, wherein the first chamber is coaxial with the second chamber and wherein the valve spindle is arranged for reciprocating movement in the two chambers.
Claim 4
Dependent Claim
20 words
A valve according to claim 2, wherein the outlet means is arranged in the housing between the two valve seats.
Claim 5
Dependent Claim
25 words
A valve according to claim 3, wherein the outlet means and the passage are divided by means of a partition to form two separate outlets.
Claim 6
Dependent Claim
28 words
A valve according to claim 4, wherein the portion of the partition surrounding the valve spindle comprises a flexible diaphragm which is sealingly connected to the valve spindle.
Claim 7
Dependent Claim
16 words
A valve according to any of claims 1, wherein the control chamber contains a compressible medium.
Claim 8
Dependent Claim
24 words
A valve according to claim 6, wherein the compressible medium is accommodated in a pressure equalizing chamber arranged to communicate with the control chamber.
Claim 9
Dependent Claim
15 words
A valve according to claim 6, wherein the pressure equalizing chamber contains an elastomeric material.
Claim 10
Dependent Claim
24 words
A valve according to claim 6, wherein the equalizing chamber is arranged on a higher level than the control chamber and contains a gas.
Claim 11
Dependent Claim
57 words
A valve according to any of claims 1, wherein the first chamber is divided by means of a flexible diaphragm into two mutually separated part chambers of which one communicates with the first inlet and the other communicates via said through-flow passages, with the control chamber to form a closed control system for controlling the valve spindle.
Claim 12
Dependent Claim
14 words
A valve according to claim 1, wherein the closed control system contains a gas.
Claim 13
Dependent Claim
14 words
A valve according to claim 1, wherein the closed control system contains a liquid.
References Cited (Backward Citations)
US1606530A
Cited
US3614965A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |