US3618628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Throttling arrangement for controlling the flow from two outlets
Assignee: Robert Bosch GmbH
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Filing: 1970-05-28
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Granted: 1971-11-09
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Expires: 1990-05-28
Abstract
Abstract A spring-biased regulating valve has a first regulating position directing fluid from a pump at a constant pressure to a first outlet, and directing excess fluid to a second outlet. The regulating valve is held in the first regulating position by fluid pressure in a regulating chamber to which fluid is supplied through a throttle from the first outlet. When the pressure in the first outlet rises above a desired constant value, a biased control valve responds to the pressure increase and relieves the pressure in the regulating chamber so that the regulating valve moves to a second regulating position in which all the fluid from the pump is supplied to the second outlet until the pressure in the first outlet has again its desired constant value. The consumer connected to the second outlet is not disturbed by interruption of the load on the first outlet, and different pressures are possible for the first and second outlets.
Inventors
- 👤 Manfred Kramer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:27
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/16; F15B11/20; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/363; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1632; Y10T137/1789; Y10T137/2496; Y10T137/2514; Y10T137/2521; Y10T137/2524; Y10T137/2559; Y10T137/2574; Y10T137/2605
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
319 words
Throttling arrangement for controlling the flow from two outlets, comprising supply means for a pressure fluid; flowregulating valve means having an inlet receiving pressure fluid from said supply means, first and second outlets, a first regulating chamber, biasing means in said first regulating chamber for urging said regulating valve means in one direction to a first regulating position connecting said inlet with said first and second outlets, and a second regulating chamber communicating with said first outlet and receiving fluid therefrom for urging said regulating valve means in the opposite direction to a second regulating position connecting only said second outlet with said inlet; and control means including return outlet means communicating with said supply means for returning fluid to the same, throttling means between said first outlet and said first regulating chamber, and a pressure-responsive valve means between said first regulating chamber and Said return outlet means, and being biased to a first control position disconnecting said first regulating chamber from said return outlet means so that fluid from said first outlet produces pressure in said first regulating chamber through said throttling means whereby said regulating valve means is held in said first regulating position, said pressure-responsive valve means being moved to a second control position when the pressure in said first outlet and said first regulating chamber exceeds a predetermined value, said pressure-responsive valve means in said second control position connecting said first regulating chamber with said return outlet means so that the pressure fluid in said second regulating chamber moves said regulating valve means to said second regulating position, said biased pressure-responsive valve means returning to said first control position when the pressure in said first outlet and thereby in said first regulating chamber drops so that said first regulating chamber is disconnected from said return outlet means and the pressure therein increases so that said regulating valve means is moved to said first regulating position.
Claim 2
Dependent Claim
319 words
Throttling arrangement for controlling the flow from two outlets, comprising supply means for a pressure fluid; flowregulating valve means having an inlet receiving pressure fluid from said supply means, first and second outlets, a first regulating chamber, biasing means in said first regulating chamber for urging said regulating valve means in one direction to a first regulating position connecting said inlet with said first and second outlets, and a second regulating chamber communicating with said first outlet and receiving fluid therefrom for urging said regulating valve means in the opposite direction to a second regulating position connecting only said second outlet with said inlet; and control means including return outlet means communicating with said supply means for returning fluid to the same, throttling means between said first outlet and said first regulating chamber, and a pressure-responsive valve means between said first regulating chamber and Said return outlet means, and being biased to a first control position disconnecting said first regulating chamber from said return outlet means so that fluid from said first outlet produces pressure in said first regulating chamber through said throttling means whereby said regulating valve means is held in said first regulating position, said pressure-responsive valve means being moved to a second control position when the pressure in said first outlet and said first regulating chamber exceeds a predetermined value, said pressure-responsive valve means in said second control position connecting said first regulating chamber with said return outlet means so that the pressure fluid in said second regulating chamber moves said regulating valve means to said second regulating position, said biased pressure-responsive valve means returning to said first control position when the pressure in said first outlet and thereby in said first regulating chamber drops so that said first regulating chamber is disconnected from said return outlet means and the pressure therein increases so that said regulating valve means is moved to said first regulating position.
Claim 3
Dependent Claim
13 words
Throttling arrangement as claimed in claim 1 wherein said throttling means is variable.
Claim 4
Dependent Claim
69 words
Throttling arrangement as claimed in claim 2 wherein said throttling means is connected with said pressure-responsive valve means for movement therewith so that the throttling flow cross section of said throttling means is reduced when the free flow cross section of said pressure-responsive valve means between said first regulating chambers and said return outlet means increases during movement of the same from said first to said second control position.
Claim 5
Dependent Claim
31 words
Throttling arrangement as claimed in claim 1 comprising another pressure-responsive valve connecting said second outlet with said return outlet means when the pressure in said second outlet exceeds a preselected pressure.
Claim 6
Dependent Claim
61 words
Throttling arrangement as claimed in claim 1 wherein said pressure-responsive valve includes a seat communicating with said first regulating chamber, a check valve member on said seat, and a spring biasing said check valve member against said seat; and wherein said check valve member moves away from said seat when the pressure in said first regulating chamber exceeds said predetermined value.
Claim 7
Dependent Claim
32 words
Throttling arrangement as claimed in claim 1 comprising conduit means connecting said first outlet with said first regulating chamber; and wherein said throttling means is a constricted portion of said conduit means.
Claim 8
Dependent Claim
180 words
Throttling arrangement as claimed in claim 1 wherein said control means include a control valve cylinder having a control inlet connected with said first outlet, a return outlet constituting said return outlet means, and connecting conduit means between said control valve cylinder and said first regulating chamber; wherein said pressure-responsive valve means include a control valve slide located in said cylinder and forming in the same a first control chamber communicating with said first outlet and said connecting conduit means, and a second control chamber communicating with said return outlet, and also include biasing means in said second control chamber for urging said control valve slide to said first control position; wherein said control valve slide is moved to said second control position when the pressure in said first control chamber increases with the pressure in said first outlet; and wherein said control valve slide forms said throttle means in said control valve cylinder so that the throttling flow cross section of said throttle means varies during movement of said control valve slide between said first and second control positions.
Claim 9
Dependent Claim
36 words
Throttling arrangement as claimed in claim 7 wherein said control valve slide fully opens said throttling flow cross section in said first control position, and closes said throttling flow cross section in said second control position.
Claim 10
Dependent Claim
56 words
Throttling arrangement as cLaimed in claim 8 wherein said control valve slide and said control valve cylinder have portions cooperating during movement of said control valve slide to said second control position for first connecting said connecting conduit means and first regulating chamber with said return outlet and for then closing said throttling flow cross section.
Claim 11
Dependent Claim
56 words
Throttling arrangement as claimed in claim 8 wherein said control valve slide and said control valve cylinders have portions cooperating during movement of said control valve slide to said second control position for first closing said throttling flow cross section and for then connecting said connecting conduit means and first regulating chamber with said return outlet.
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) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |