Spool assembly for control valve
AssigneeEaton Corporation
InventorsTam Chi Huynh, Chris William Schottler
Life of this patent
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Abstract
The control valve assembly includes a valve housing defining a bore and a valve assembly. The valve assembly includes a spool assembly disposed in the bore of the valve housing. The spool assembly includes a first spool and a second spool. The first spool has a first axial end and an oppositely disposed second axial end. The first spool is made of a first material. The first material is non-magnetic. The second spool has a first end and an oppositely disposed second end. The first end of the second spool is engaged to the second axial end of the first spool. The second spool is made of a second material. The second material is magnetic.
Claims20
A control valve assembly comprising:
- a valve housing defining a bore;
- a valve assembly including a spool assembly disposed in the bore of the valve housing, the spool assembly including:
- a first spool having a first axial end and an oppositely disposed second axial end, the first spool being made of a first material, wherein the first material is non-magnetic;
- and
- a second spool having a first end and an oppositely disposed second end, the first end of the second spool being engaged to the second axial end of the first spool, the second spool being made of a second material, wherein the second material is magnetic.
A valve assembly comprising:
- a voice coil assembly having a permanent magnet, a pole piece and a bobbin;
- and
- a spool assembly connectedly engaged with the voice coil assembly, the spool assembly including:
- a first spool having a first axial end and an oppositely disposed second axial end, the first spool being made of a first material;
- and
- a second spool having a first end and an oppositely disposed second end, the first end of the second spool being engaged to the second axial end of the first spool, the second spool being made of a second material, wherein the second material is different than the first material.
A valve assembly comprising:
- a voice coil assembly having a permanent magnet, a pole piece and a bobbin;
- and
- a spool assembly connectedly engaged with the voice coil assembly, the spool assembly including:
- a first spool having a first axial end and an oppositely disposed second axial end, the first spool being made of a first material;
- and
- a second spool having a first end and an oppositely disposed second end, the first end of the second spool being engaged to the second axial end of the first spool, the second spool being made of a second material that is different than the first material, wherein the second material is magnetic and has a hardness value that is greater than a hardness value of the first material.
Dependencies are inferred from the claim text.