Patent US2465493A successfully refreshed from Google Patents.
US3572850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure responsive splitter valve
Assignee: Bendix Corp
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Filing: 1968-07-24
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Granted: 1971-03-30
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Expires: 1988-07-24
Abstract
Abstract A control device in a braking system for scheduling hydraulic pressures from separate sources to front and rear wheel brakes with equal intensity. A housing with separate inlet and outlet ports for each system has a resiliently biased valve member which extends into a control chamber. The control chamber is connected to one of the sources of hydraulic pressure. When the pressure in the control chamber reaches a predetermined value the resilient member collapses allowing the valve to move. The valve upon moving closes the communication of one inlet port and opens the discharge ports to the other source of hydraulic pressure assuring the same line pressure in the different wheel brake systems.
Inventors
- 👤 Harold B Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:04
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/12; B60T13/14; B60T13/142; B60T13/145; B60T13/146; B60T11/00; B60T11/10; B60T11/16; B60T11/20; Y; Y10; Y10T; Y10T137/00; Y10T137/0971; Y10T137/1007; Y10T137/8593; Y10T137/86493
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
120 words
A valve for regulating fluid pressures from different sOurces supplied to separate hydraulic systems, said valve having: a housing with inlets ports for receiving fluid pressures from said different sources, separate inlet chamber means separated by a bore, a reference pressure chamber in communication with fluid pressure from one of said different fluid pressure sources and separate discharge ports; and control means in said bore acted upon by the fluid pressure in said reference chamber and an opposing means for applying a predetermined bias, said control means functioning to supply said separate discharge ports with fluid from one of said pressure sources in response to an increase in the pressure in the reference chamber sufficient to overcome said predetermined bias.
Claim 2
Dependent Claim
120 words
A valve for regulating fluid pressures from different sOurces supplied to separate hydraulic systems, said valve having: a housing with inlets ports for receiving fluid pressures from said different sources, separate inlet chamber means separated by a bore, a reference pressure chamber in communication with fluid pressure from one of said different fluid pressure sources and separate discharge ports; and control means in said bore acted upon by the fluid pressure in said reference chamber and an opposing means for applying a predetermined bias, said control means functioning to supply said separate discharge ports with fluid from one of said pressure sources in response to an increase in the pressure in the reference chamber sufficient to overcome said predetermined bias.
Claim 3
Dependent Claim
33 words
The structure of claim 1 wherein one discharge port is communicated by passage means to said bore between the separate inlet chambers and the other discharge port is communicated to one inlet chamber.
Claim 4
Dependent Claim
83 words
The structure of claim 2 wherein the control means includes a spool-type valve both ends of which are sealingly supported by the housing with one end projecting into said reference pressure chamber, said spool-type valve having intermediate its ends valve face means cooperating with said bore to provide separate flow paths in one attitude commingled flow from the inlet ports to the discharge ports in another attitude and a segregated flow path from one inlet port to all discharge ports in another attitude.
Claim 5
Dependent Claim
40 words
The structure of claim 3 wherein said spool-type valve has on its other end a means to mount a spring operatively connected to said housing by an adjustable means to permit regulation of the spring load on said spool-type valve.
Claim 6
Dependent Claim
140 words
A control device in a braking system for regulating fluid pressure from separate hydraulic systems operating the front and rear wheel brake assemblies, said device comprising: a housing having a bore therein; inlet ports in said housing connected to said hydraulic systems; outlet ports in said housing connected to said front and rear wheel brake assemblies; a reference chamber in said housing pressurized by fluid from one of said hydraulic systems; and valve means in the bore of said housing moving in response to the pressure in the reference chamber from a first position where fluid flows directly from each inlet to each outlet, to a second position where the fluid flow to one inlet if blocked while permitting the fluid flow through the other inlet to supply said outlets with the same fluid pressure to operate said brake assemblies.
Claim 7
Dependent Claim
140 words
A control device in a braking system for regulating fluid pressure from separate hydraulic systems operating the front and rear wheel brake assemblies, said device comprising: a housing having a bore therein; inlet ports in said housing connected to said hydraulic systems; outlet ports in said housing connected to said front and rear wheel brake assemblies; a reference chamber in said housing pressurized by fluid from one of said hydraulic systems; and valve means in the bore of said housing moving in response to the pressure in the reference chamber from a first position where fluid flows directly from each inlet to each outlet, to a second position where the fluid flow to one inlet if blocked while permitting the fluid flow through the other inlet to supply said outlets with the same fluid pressure to operate said brake assemblies.
Claim 8
Independent Claim
183 words
A device in a braking system for regulating the supply of hydraulic fluid pressure from a split system with booster means to separate distributing systems with equal intensity, said device comprising: a housing having inlet ports communicated to a bore through said housing, said inlet ports being connected to said split system with booster means and outlet ports open to said bore, one of which is between said inlet ports and the other directly opposite one of said inlet ports, said outlet ports being connected to said separate distributing systems, said housing being provided with a control chamber at one end, said control chamber receiving fluid pressure from said booster means; and valve means resiliently urged toward said control chamber permitting the hydraulic fluid pressure to flow directly through the inlet ports to the outlet ports until the pressure in the control chamber overcomes the resilient force and moves said valve means closing one inlet port while permitting the fluid pressure supplied to the other inlet port to be communicated to the outlet ports for each distributing system with the same fluid pressure.
Claim 9
Independent Claim
183 words
A device in a braking system for regulating the supply of hydraulic fluid pressure from a split system with booster means to separate distributing systems with equal intensity, said device comprising: a housing having inlet ports communicated to a bore through said housing, said inlet ports being connected to said split system with booster means and outlet ports open to said bore, one of which is between said inlet ports and the other directly opposite one of said inlet ports, said outlet ports being connected to said separate distributing systems, said housing being provided with a control chamber at one end, said control chamber receiving fluid pressure from said booster means; and valve means resiliently urged toward said control chamber permitting the hydraulic fluid pressure to flow directly through the inlet ports to the outlet ports until the pressure in the control chamber overcomes the resilient force and moves said valve means closing one inlet port while permitting the fluid pressure supplied to the other inlet port to be communicated to the outlet ports for each distributing system with the same fluid pressure.
Claim 10
Dependent Claim
28 words
A device, as recited in claim 6, wherein said valve means includes a spring member retained by an adjustable cap for varying the resilient force on said valve.
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) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |