Polymeric thread insert for high load leadscrew and nut
AssigneeHamilton Sundstrand Corporation
InventorsNavaneethakrishnan Pandian, Subrahmanyam Veerarapu
Life of this patent
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Abstract
Leadscrew and nut actuators are described. The leadscrew and nut actuators include a leadscrew having an external thread and formed from a first material, a nut configured to receive the leadscrew, the nut having an internal thread and formed from a second material, and an insert arranged between the internal thread of the nut and the external thread of the leadscrew, the insert configured to transfer force between the external thread and the internal thread and prevent material contact between the leadscrew and the nut. The insert is formed of a third material different from the first material and the second material.
Claims19
A leadscrew and nut actuator comprising:
- a leadscrew having an external thread and formed from a first material;
- a nut configured to receive the leadscrew, the nut having an internal thread and formed from a second material;
- and
- an insert having a helical structure arranged between the internal thread of the nut and the external thread of the leadscrew, the insert configured to transfer force between the external thread and the internal thread and prevent material contact between the leadscrew and the nut;
- at least one end stop fixedly attached to the leadscrew and arranged within a space between axially adjacent portions of the external thread and at each end of the insert and configured to retain the position of the insert relative to the leadscrew,
- wherein the insert is formed of a third material different from the first material and the second material.
A leadscrew and nut actuator comprising:
- a leadscrew having an external thread and formed from a first material;
- a nut configured to receive the leadscrew, the nut having an internal thread and formed from a second material;
- and
- an insert having a helical structure arranged between the internal thread of the nut and the external thread of the leadscrew, the insert configured to transfer force between the external thread and the internal thread and prevent material contact between the leadscrew and the nut;
- at least one end stop fixedly attached to the nut and arranged within a space between axially adjacent portions of the internal thread and at each end of the insert and configured to retain the position of the insert relative to the nut,
- wherein the insert is formed of a third material different from the first material and the second material.
Dependencies are inferred from the claim text.