A system for imparting a variable user force to a user, the system comprising: a line guide arrangement, including at least one moveable line guide which may move in both directions along a linear axis; wherein a force arrangement is arranged to apply at least one internal force to the at least one moveable line guide, wherein the at least one internal force opposes the motion of the at least one moveable line guide in a first direction along the linear axis; a member with which the user may interact so that the user force is applied to the user through the member; a line, having a distal end and a proximal end, with the distal end of the line attached to the member, the line being continuously threaded around the line guide arrangement; the system further comprising a line adjustment arrangement, wherein: the line adjustment arrangement is attached to the line, or is connected to move a component of the line guide arrangement; when the line adjustment arrangement is in a locked mode, there is a first ratio between distance moved by the member and distance moved by the force arrangement; and the line adjustment arrangement is operable to remove/introduce line between an entry point and the member, or actively move the component of the line guide arrangement, to alter the ratio between distance moved by the member and distance moved by the force arrangement during movement of the member.
Weights system
2018-01-03
Patent
Electronic Resource
English
Engineering Index Backfile | 1943
NTIS | 1995
NTRS | 1995
Engineering Index Backfile | 1956
|Engineering Index Backfile | 1943
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