An energy extraction system for a rotational surface including a drive mechanism having a rotational axis and configured to rotatably couple to the rotational surface and an energy extraction mechanism coupled to the drive mechanism. The drive mechanism includes a cam rotatable about the rotational
An energy extraction system for a rotational surface including a drive mechanism having a rotational axis and configured to rotatably couple to the rotational surface and an energy extraction mechanism coupled to the drive mechanism. The drive mechanism includes a cam rotatable about the rotational axis and an eccentric mass coupled to the cam that offsets a center of mass of the drive mechanism from the rotational axis, the eccentric mass cooperatively formed by a first and a second section, the eccentric mass operable between a connected mode wherein the first and second sections are adjacent and a disconnected mode wherein the first and second sections are separated. The energy extraction mechanism is connected to the cam and is statically coupled to the rotating surface, wherein the energy extraction mechanism configured to extract energy from relative rotation between the energy extraction mechanism and the cam.
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1. An energy extraction system configured to couple to a rotating surface, the system comprising: an energy extraction mechanism connected to an energy storage mechanism and configured to statically couple to the rotating surface, the energy extraction mechanism configured to revolve about a revolut
1. An energy extraction system configured to couple to a rotating surface, the system comprising: an energy extraction mechanism connected to an energy storage mechanism and configured to statically couple to the rotating surface, the energy extraction mechanism configured to revolve about a revolution axis and extract energy from rotating surface rotation; anda counterweight rotatably coupled to the energy extraction mechanism with the counterweight offset from the revolution axis, the counterweight operable between a cohesive state and a distributed state, the counterweight configured to switch from the cohesive state to the distributed state in response to an applied external force applied by the rotating surface, and from the distributed state to the cohesive state in response to removal of the applied external force. 2. The system of claim 1, wherein the counterweight comprises a first and a second section, wherein the first and second sections are adjacent in the cohesive state and separated in the distributed state. 3. The system of claim 2, wherein the counterweight is rotatably connected to the revolution axis. 4. The system of claim 1, wherein the energy extraction mechanism comprises a pump comprising a chamber and an actuating element. 5. The system of claim 4, wherein the energy extraction mechanism further comprises a drive component statically connected to the counterweight, the drive component configured to change a position of the actuating element relative to a chamber end, dependent upon an angular position of the energy extraction mechanism relative to the counterweight. 6. The system of claim 5, wherein the counterweight comprises constituent masses rotatably connected to a connecting member that is statically connected to the drive component. 7. The system of claim 6, wherein the connecting member comprises a groove encircling the revolution axis, the groove statically connected to the drive component, wherein the constituent masses translate within the grove. 8. The system of claim 7, wherein the constituent masses each comprise an end slidably enclosed within the groove. 9. The system of claim 5, wherein the energy extraction mechanism further comprises a force translation mechanism coupling the actuating element to the drive component. 10. The system of claim 9, wherein the drive component comprises a cam. 11. The system of claim 10, wherein the cam comprises an arcuate bearing surface having a non-uniform curvature, wherein the force translation mechanism comprises a roller that translates along the arcuate bearing surface, the roller having a roller rotation axis fixed to the actuating element. 12. A method of extracting energy from a rotating surface, the rotating surface having a rotational axis at a non-zero angle to a gravity vector, comprising: retaining a drive component substantially stationary relative to the gravity vector;extracting energy from relative motion between the stationary component and an extraction mechanism rotating with the rotating surface; andin response to receipt of an external force from the rotating surface, permitting the drive component to rotate with the extraction mechanism. 13. The method of claim 12, wherein retaining the drive component substantially stationary relative to the gravity vector comprises statically connecting a counterweight to the drive component, the counterweight offset from a revolution axis of the extraction mechanism. 14. The method of claim 13, wherein permitting the drive component to rotate with the extraction mechanism comprises distributing constituent masses of the counterweight about the revolution axis. 15. The method of claim 14, wherein distributing constituent masses of the counterweight about a revolution axis comprises substantially evenly distributing the constituent masses about the revolution axis. 16. The method of claim 14, wherein the constituent masses are movably connected to a connecting member that is statically connected to the component. 17. The method of claim 16, wherein the connecting member comprises a groove encircling the revolution axis statically connected to the drive component, wherein the constituent masses comprise ends capable of translating within the groove. 18. The method of claim 12, wherein the extraction mechanism comprises a pump, wherein extracting energy from relative motion between the stationary component and the extraction mechanism comprises reciprocating an actuating element of the pump within a chamber of the pump. 19. The method of claim 18, wherein the drive component comprises a cam comprising an arcuate bearing surface having a non-uniform curvature, wherein reciprocating an actuating element of the pump within a chamber of the pump comprises translating changes in the curvature of the bearing surface into actuating element reciprocation. 20. The method of claim 19, wherein translating changes in the curvature of the bearing surface into actuating element reciprocation comprises rolling a roller having a revolution axis fixed to the actuating element along the bearing surface.
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