Spool assembly for servovalve
AssigneeHamilton Sunstrand Corporation
InventorsMarcin Cis, Piotr Sawicki
Life of this patent
Estimating the term…
Abstract
The disclosure provides a method of securing a feedback spring relative to a spool of a servovalve, the method comprising inserting the feedback spring at least partially into an internal cavity of the spool, inserting two fixing members into the internal cavity such that they each oppose a portion of the feedback spring, bringing the fixing members into respective set positions, such that the fixing members clamp the feedback spring and prevent relative movement between the feedback spring and the spool, and securing the fixing members in their respective set positions, such that the fixing members remain in their clamping positions and prevent relative movement between the feedback spring and the spool.
Claims13
A method of securing a feedback spring relative to a spool of a servovalve, the method comprising:
- inserting the feedback spring at least partially into an internal cavity of the spool;
- inserting two fixing members into the internal cavity such that they each oppose a portion of the feedback spring;
- bringing the fixing members into respective set positions, such that the fixing members clamp the feedback spring and prevent relative movement between the feedback spring and the spool;
- and
- securing the fixing members in their respective set positions, such that the fixing members remain in their clamping positions and prevent relative movement between the feedback spring and the spool,
- wherein the fixing members comprise one or more deformable members, and the step of securing the fixing members in their respective set positions comprises deforming the one or more deformable members from a first position, in which at least one of the fixing members is permitted to slide or move within the spool, to a second position, in which the least one of the fixing members is not permitted to slide or move within the spool.
A spool assembly for a servovalve, comprising:
- a spool comprising an internal cavity;
- a feedback spring extending at least partially into the internal cavity;
- and
- two fixing members located within the internal cavity and contacting a portion of the feedback spring within the internal cavity, wherein the fixing members clamp the feedback spring and prevent relative movement between the feedback spring and the spool,
- wherein at least one of the fixing members is secured in a set position and prevented from moving within the internal cavity using one or more deformable members that have been deformed from a first position in which at least one of the fixing members is permitted to slide or move within the spool into a second position in which the at least one of the fixing members is not permitted to slide or move within the spool and the one or more deformable members are biased between the at least one of the fixing members and one or more surfaces of the spool.
Dependencies are inferred from the claim text.