US3760830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow regulating valve for pressure fluids
Assignee: Individual
•
Filing: 1971-08-16
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Granted: 1973-09-25
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Expires: 1991-08-16
Abstract
Abstract A flow regulating valve for pressure fluids has a housing provided with an inlet and two outlets for pressure fluid. A slidable control member in the housing has differential pressure faces exposed to differential pressure in response to whose magnitude it divides a flow of fluid entering the inlet into a main and a secondary stream which are each channeled to one of the outlets. An adjustable throttling device is located in the housing and permits adjusting of the pressures acting upon the respective pressure faces, and an eccentric displaces the throttling device to various positions to obtain a desired setting. A pressure-fluid operated control arrangement is associated with the throttling device and can vary the onceselected setting of the latter independently of the manual setting of the eccentric and in dependence upon a control pressure governed by a reference value.
Inventors
- 👤 R Fritzsche
- 👤 F Hofer
- 👤 R Schmid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:06
CPC Classifications
A; A01; A01D; A01D57/00; A01D57/01; A01D57/02; A01M; A01M7/00; A01M7/0089; F; F15; F15B; F15B13/00; F15B13/02; F15B13/022; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2521; Y10T137/2524
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
348 words
A flow regulating valve for pressure fluids, comprising a housing having an inlet and two outlets for pressure fluid, and a bore communicating with said inlet and said outlets; a first source of pressure fluid for supplying fluid under pressure to said inlet; a slidable control member in said bore and having differential pressure faces; first passage means communicating said pressure faces with said inlet, so that the differential pressure faces are exposed to differential pressures exerted upon them by said pressure fluid, resulting in movement of said control member to a position in which the latter divides the flow of fluid entering said inlet into a main and a secondary stream which are channelled from said inlet via said bore to one of said outlets; adjustable throttling means in said housing and communicating with said bore and said first passage means for adjusting the pressure acting upon one of said pressure faces, said throttling means comprising a throttling member movable toward and away from an end position, and biasing means permanently urging said throttling member to said end position; operator-controlled varying means for varying the position of said throttling member so as to select a desired setting at the will of an operator; and pressure-fluid operated control means associated with said throttling means and said varying means and being operative for varying the position of said throttling member independently of the respective selected setting in dependence upon a control pressure governed by a reference value, said control means comprising an inlet port communicating with and receiving a stream of control fluid under pressure from a source of control fluid, second passage means in said housing, a piston slidably mounted in said second passage means between and in motion-transmitting relation to said throttling member and said varying means and having two sides one of which is at least in part exposed to said stream of control fluid, and third passage means connecting said second passage means with said bore and with one of said outlets in dependence upon the position of said piston in said second passage means.
Claim 2
Dependent Claim
348 words
A flow regulating valve for pressure fluids, comprising a housing having an inlet and two outlets for pressure fluid, and a bore communicating with said inlet and said outlets; a first source of pressure fluid for supplying fluid under pressure to said inlet; a slidable control member in said bore and having differential pressure faces; first passage means communicating said pressure faces with said inlet, so that the differential pressure faces are exposed to differential pressures exerted upon them by said pressure fluid, resulting in movement of said control member to a position in which the latter divides the flow of fluid entering said inlet into a main and a secondary stream which are channelled from said inlet via said bore to one of said outlets; adjustable throttling means in said housing and communicating with said bore and said first passage means for adjusting the pressure acting upon one of said pressure faces, said throttling means comprising a throttling member movable toward and away from an end position, and biasing means permanently urging said throttling member to said end position; operator-controlled varying means for varying the position of said throttling member so as to select a desired setting at the will of an operator; and pressure-fluid operated control means associated with said throttling means and said varying means and being operative for varying the position of said throttling member independently of the respective selected setting in dependence upon a control pressure governed by a reference value, said control means comprising an inlet port communicating with and receiving a stream of control fluid under pressure from a source of control fluid, second passage means in said housing, a piston slidably mounted in said second passage means between and in motion-transmitting relation to said throttling member and said varying means and having two sides one of which is at least in part exposed to said stream of control fluid, and third passage means connecting said second passage means with said bore and with one of said outlets in dependence upon the position of said piston in said second passage means.
Claim 3
Dependent Claim
46 words
A valve as defined in claim 1 said second source further comprising a control pump associated with said control means and operative for supplying pressure fluid to said inlet port, said control pump supplying quantities of pressure fluid which vary in dependence upon said reference value.
Claim 4
Dependent Claim
42 words
A valve as defined in claim 2, said second source; further comprising a pressure-fluid reservoir, supply conduit means connecting said reservoir with said control pump and the latter with said inlet port, and return conduit means connecting said housing with said reservoir.
Claim 5
Dependent Claim
25 words
A valve as defined in claim 3; and further comprising an adjustable throttling device interposed between said supply conduit means and said return conduit means.
Claim 6
Dependent Claim
38 words
A valve as defined in claim 3; further comprising a one-way relief valve connecting said supply conduit means with said return conduit means and operative for permitting the flow of fluid only from the latter to the former.
Claim 7
Dependent Claim
38 words
A valve as defined in claim 1, said varying means comprising an eccentric element in said housing and acting upon said one side in a sense displacing said piston counter to said biasing means to a desired setting.
Claim 8
Dependent Claim
27 words
A valve as defined in claim 6, said varying means comprising an operating portion accessible at the exterior of said housing and acting upon said eccentric element.
Claim 9
Dependent Claim
15 words
A valve as defined in claim 7, wherein said operating portion comprises a threaded element.
References Cited (Backward Citations)
US2312549A
Cited
US2582088A
Cited
US2643664A
Cited
US3241318A
Cited
US3402912A
Cited
US3642019A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |