Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
208 words
For use in an anti-lock braking system which includes a source of pressurized braking fluid, wheel braking means, and an anti-lock control means for generating brake control signals in response to behavior of a wheel, a control valve comprising a valve body having a bore and a first inlet, second inlet, a first outlet, and a decay outlet, first valve means received reciprocally in said bore and having a longitudinal through passage therethrough communicating between said second inlet and said outlets, second valve means normally closing said decay outlet and displacable to an open position and further to cooperate with said longitudinal through passage and thereby cause a fluid pressure differential across said first valve means, a transverse opening extending through said first valve means to intersect said longitudinal through passage and provide communication between said first inlet and the outlets, said first valve means being moveable in response to the fluid pressure differential thereacross to be displacable to a displaced position wherein flow between said first inlet and said transverse passage is terminated so that fluid may flow between said second inlet and outlets, and actuator means for moving said second valve means from a closed position to an open position in response to said control signals.
Claim 2
Dependent Claim
208 words
For use in an anti-lock braking system which includes a source of pressurized braking fluid, wheel braking means, and an anti-lock control means for generating brake control signals in response to behavior of a wheel, a control valve comprising a valve body having a bore and a first inlet, second inlet, a first outlet, and a decay outlet, first valve means received reciprocally in said bore and having a longitudinal through passage therethrough communicating between said second inlet and said outlets, second valve means normally closing said decay outlet and displacable to an open position and further to cooperate with said longitudinal through passage and thereby cause a fluid pressure differential across said first valve means, a transverse opening extending through said first valve means to intersect said longitudinal through passage and provide communication between said first inlet and the outlets, said first valve means being moveable in response to the fluid pressure differential thereacross to be displacable to a displaced position wherein flow between said first inlet and said transverse passage is terminated so that fluid may flow between said second inlet and outlets, and actuator means for moving said second valve means from a closed position to an open position in response to said control signals.
Claim 3
Dependent Claim
17 words
The control valve in accordance with claim 1, wherein said longitudinal through passage comprises restriction means therein.
Claim 4
Dependent Claim
25 words
The control valve in accordance with claim 1, wherein said bore includes a shoulder therein, said shoulder comprising means for closing said transverse fluid passage.
Claim 5
Dependent Claim
20 words
The control valve in accordance with claim 1, wherein said second inlet includes therein one way fluid flow valve means.
Claim 6
Dependent Claim
26 words
The control valve in accordance with claim 1, wherein resilient means is disposed within said bore and biases said first valve means toward a first position.
Claim 7
Dependent Claim
26 words
The control valve in accordance with claim 5, wherein said actuator means comprises an electric solenoid having a plunger, said plunger engagng said second valve element.
Claim 8
Dependent Claim
34 words
The control valve in accordance with claim 6, wherein said longitudinal through passage communicates between a valve seat and an end of said bore, said valve seat being positioned adjacent said second valve means.
Claim 9
Dependent Claim
63 words
The control valve in accordance with claim 1, wherein said bore comprises a stepped bore, said first valve means having an enlarged diameter section received within an enlarged diameter section of said stepped bore, the enlarged diameter section of the first valve means, the valve body, and a shoulder of said stepped bore defining a first receiving chamber communicating with said first inlet.
Claim 10
Dependent Claim
32 words
The control valve in accordance with claim 8, wherein during a release phase of braking, fluid may flow from said first receiving chamber through said first inlet and toward a master cylinder.
Claim 11
Dependent Claim
37 words
The control valve in accordance with claim 8, wherein said enlarged diameter section of the first valve means and an end of said stepped bore define therebetween a second fluid receiving chamber communicating with said second inlet.
Claim 12
Dependent Claim
20 words
The control valve in accordance with claim 10, wherein the resilient means biases second valve element toward a closed position.
Claim 13
Dependent Claim
36 words
The control valve in accordance with claim 1, wherein said first inlet comprises a master cylinder inlet, said second inlet comprises a pump inlet, and said first outlet comprises an outlet to said wheel braking means.