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1. (WO2019063670) SUSPENSION ASSEMBLY AND METHOD OF MAKING AND USING THE SAME
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CLAIMS:

1. A suspension assembly comprising:

a tube assembly comprising:

a hollow outer tube, and

a hollow inner tube fitted within the outer tube and adapted to be slidably engageable with the outer tube, wherein the tube assembly is adapted to contain at least one of (i) a damping element to control relative movement between the inner tube and the outer tube, and (ii) a spring element adapted to resist a force applied to the tube assembly; and

a sensor-less measurement system adapted to measure the capacitance between the inner tube and the outer tube, wherein relative movement between the inner tube and the outer tube is derived from the change in measured capacitance between the inner tube and the outer tube.

2. A method comprising:

providing a suspension assembly comprising:

a tube assembly comprising:

a hollow outer tube, and

a hollow inner tube fitted within the outer tube and adapted to be slidably engageable with the outer tube, wherein the tube assembly is adapted to contain at least one of (i) a damping element to control relative movement between the inner tube and the outer tube, and (ii) a spring element adapted to resist a force applied to the tube assembly; and

a sensor-less measurement system adapted to measure the capacitance between the inner tube and the outer tube, wherein relative movement between the inner tube and the outer tube is derived from the change in measured capacitance between the inner tube and the outer tube; measuring the capacitance between the inner tube and the outer tube over time; and

deriving the relative movement between the inner tube and the outer tube from the change in measured capacitance between the inner tube and the outer tube.

3. The assembly of claim 1 or the method of claim 2, wherein the spring element is disposed within the outer tube and is adapted to provide spring force between the inner tube and the outer tube.

4. The assembly or the method of any one of claims 1 to 3, wherein the damping element comprises a fluid disposed within the outer tube, and wherein the damping element is adapted to restrict fluid flow so as to damp relative movement between the inner tube and the outer tube.

5. The assembly or the method of any on of claims 1 to 4, wherein no capacitive shortcut exists between the inner tube and the outer tube.

6. The assembly or the method of any one of claims 1 to 5, wherein the measurement system comprises:

an electrical contact to the inner tube and an electrical contact to the outer tube; and

a measurement device adapted to measure capacitance between the inner tube and the outer tube.

7. The assembly or method of claim 6, wherein the measurement device is wirelessly coupled to the electrical contact.

8. The assembly or method of claim 6 or 7, wherein the measurement device further comprises at least one of a computer system or a

communication device, each operable to communicate with the processor and display data corresponding to the operational characteristic measured by the measurement device.

9. The assembly or method of claim 8, wherein the communication device includes a software program operable to generate the information based on the data received from the processor.

10. The assembly or method of claim 8 or 9, wherein the at least one computer system and communication device is operable to adjust the vehicle suspension to the operational setting suggested by the processor.

11. The assembly or method of any one of claims 1 to 10, wherein a dielectric gap exists radially between the inner tube and the outer tube.

12. The assembly or method of any one of claims 1 to 11, wherein at least one of the inner tube or the outer tube comprise a polymer.

13. The assembly or method of any one of claims 1 to 12, wherein the position of the inner tube or outer tube of the tube assembly corresponds to a stroke of the suspension assembly during compression or rebound of a vehicle.

14. The assembly or method of any one of claims 1 to 13, wherein the suspension assembly includes at least one of a front suspension and a rear suspension of a vehicle.

15. An assembly comprising:

a hollow outer tube, and

a hollow inner tube fitted within the outer tube and adapted to be slidably engageable with the outer tube; and

a sensor-less measurement system adapted to measure the capacitance between the inner tube and the outer tube, wherein relative movement between the inner tube and the outer tube is derived from the change in measured capacitance between the inner tube and the outer tube.