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US 11,518,507 B2Granted
Linear actuator
AssigneeClaverham Limited
InventorsPaul Brewer, Reg Raval
Life of this patent
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Abstract
A linear actuator is provided. The linear actuator comprises: a body; a shaft adapted to move linearly relative to the body; a driver adapted to drive the linear movement of the shaft; and a shape memory alloy component configured to compensate for thermal expansion or contraction of the linear actuator due to a change in temperature thereof.
Claims20
A linear actuator comprising:
- a body;
- a shaft adapted to move linearly relative to the body;
- a driver adapted to drive the linear movement of the shaft;
- and
- a shape memory alloy component configured to compensate for thermal expansion or contraction of the linear actuator due to a change in temperature thereof;
- wherein the linear actuator is an electromechanical actuator;
- wherein the driver comprises an electric motor;
- and
- wherein the shape memory alloy component comprises a spacer extending between a first part of the body and a second part of the body.
6 more elements
A linear actuator comprising:
- a body;
- a shaft adapted to move linearly relative to the body;
- a driver adapted to drive the linear movement of the shaft;
- and
- a shape memory alloy component configured to compensate for thermal expansion or contraction of the linear actuator due to a change in temperature thereof;
- wherein the linear actuator is an electromechanical actuator;
- wherein the driver comprises an electric motor;
- and
- wherein the shape memory alloy component comprises an end portion of the linear actuator.
6 more elements
A method of compensating for thermal expansion or contraction of a linear actuator due to a change in temperature thereof, the method comprising:
- compressing a shape memory alloy component while heating or cooling the component to a desired temperature;
- positioning the shape memory alloy component in the linear actuator such that the shape memory alloy component will compensate for thermal expansion or contraction of the actuator due to a change in temperature thereof;
- wherein the linear actuator is an electromechanical actuator;
- wherein the driver comprises an electric motor;
- and
- wherein the shape memory alloy component comprises one of:
- a spacer extending between a first part of the body and a second part of the body;
- and
- an end portion of the linear actuator.
6 more elements
Dependencies are inferred from the claim text.