Back to results
US 5,979,866 AGranted
Electromagnetically actuated disc-type valve
AssigneeSagem SA
InventorsRandy C. Baxter, David R. Gallup, H. A. Staples, III
Life of this patent
Estimating the term…
Abstract
An electromagnetically actuatable disc-type valve includes a pre-assembled hydraulic sub-assembly with a core member and a separately pre-assembled electrical sub-assembly with a body. The exterior surface of the core member is configured to facilitate insertion into the electrical sub-assembly and orientation relative thereto by use of a bushing. The outside diameter of the body of the valve is no more than 13.5 millimeters in the vicinity of the delivery end of the hydraulic sub-assembly. A fluid filter is disposed between a tensioning spring and a calibration slide to facilitate more accurate flow checking and leakage checking of the valve during manufacture.
Claims17
An electromagnetically actuatable disc-type valve for metering the supply of fluid, the valve comprising:
- an elongated cylindrical core member having an exterior surface including a bottom surface, said core member defining a hollow passage internally thereof;
- an armature having a top surface disposed toward said bottom surface of said core member, said armature having a bottom surface disposed to face opposite said top surface of said armature;
- a lift stop member formed of non-magnetic material, said lift stop member being configured in the form of a first annular sleeve with an axial opening configured to receive a portion of said core member therein;
- a valve seat configured in the form of a first disc having a top face disposed toward said bottom surface of said armature, said top face including a top surface, said valve seat defining at least one entrance opening through said top surface, said valve seat defining at least one sealing land surrounding all said entrance openings and having an upper surface raised above said top surface of said valve seat;
- a nozzle pole configured in the form of a second annular sleeve, said nozzle pole defining a supply end and a delivery end disposed axially opposite said supply end, said nozzle pole defining an interior wall at said supply end, at least part of said interior wall defining at least part of a first receiving compartment, said armature being at least partially received within said first receiving compartment;
- each of said core member, armature and nozzle pole being formed of magnetic material and configured and disposed together to be selectively actuated to form part of a magnetic circuit with a single working pole at said bottom surface of said core member;
- a guide ring formed of non-magnetic material and configured in the form of a third annular sleeve, said guide ring being disposed to prevent physical contact between said armature and said nozzle pole when said core member, said armature and said nozzle pole are selectively actuated to form part of said magnetic circuit;
- a first weld for welding said nozzle pole to said lift stop member;
- and
- a second weld for welding said lift stop member to a portion of said exterior surface of said core member in a manner defining an air gap of a predetermined magnitude between said top surface of said armature and said bottom surface of said core member when said core member, said armature, and said nozzle pole are selectively actuated to form part of said magnetic circuit.
7 more elements
An electromagnetically actuatable disc-type valve for metering the supply of fluid, the valve comprising:
- an elongated cylindrical core member having an exterior surface including a bottom surface, said core member defining a hollow passage internally thereof;
- an armature having a top surface disposed toward said bottom surface of said core member, said armature having a bottom surface disposed to face opposite said top surface;
- a valve seat having a top face disposed toward said bottom surface of said armature, said valve seat defining at least one entrance opening through said top face, said valve seat defining at least one sealing land surrounding said at least one entrance opening;
- a means for resiliently biasing said armature against said sealing land of said valve seat, said biasing means having a forward end and a rear end opposite said forward end, said valve seat being disposed closer to said forward end of said biasing means than to said rear end of said biasing means;
- a means for filtering fluid passing through said passage of said core member, said filtering means being disposed internally of said passage of said core member, said biasing means being disposed between said armature and said filtering means;
- and
- a calibration means for setting the biasing force on said armature via said filtering means and said biasing means, said filtering means being disposed between said biasing means and said calibration means.
4 more elements
An electromagnetically actuatable disc-type valve for metering the supply of fluid, the valve comprising:
- a hydraulic sub-assembly, said hydraulic sub-assembly having a supply end for receiving fluid, said hydraulic sub-assembly having a delivery end disposed opposite said supply end, said delivery end being configured for delivering fluid supplied to said supply end, said hydraulic sub-assembly including an elongated core member extending between said supply end and said delivery end of said hydraulic sub-assembly and defining an internal passage for the fluid passing through the valve, said hydraulic sub-assembly further including an armature with a top surface disposed toward said delivery end of said core member, said armature defining a fluid passage axially through said armature for selective communication with said internal passage of said core member, said hydraulic sub-assembly being configured to selectively define in a first operative configuration a path for the flow of fluid therethrough and in a second operative configuration being sealed against the flow of fluid through said path;
- and
- an electrical sub-assembly, said electrical sub-assembly including at least one electrical component for switching said hydraulic sub-assembly from said first operative configuration to said second operative configuration, said electrical sub-assembly being configured to receive mechanical insertion of said hydraulic sub-assembly into said electrical sub-assembly, wherein said core member defining an exterior surface that is configured to facilitate mechanical insertion of said hydraulic sub-assembly into said electrical sub-assembly.
Dependencies are inferred from the claim text.