A linkage assembly couples a plunger of a brake valve to a manually operated brake input member. The linkage assembly includes a pushrod and a resilient member. The pushrod has an end member which is engagable with the plunger. The resilient member is attached to the pushrod end member. The resilient member has an end which is engagable with the plunger when the pushrod end member is spaced apart from the plunger. The resilient member deforms to allow the pushrod end member to directly engage the plunger when the pushrod end member is moved towards the plunger. One of the end and resilient members surrounds a portion of the other of the end and resilient members. The resilient member may be a sleeve which surrounds an end portion of the pushrod. Or, the resilient member may be surrounded by a hollow end portion of the pushrod.

A linkage assembly couples a plunger of a brake valve to a manually operated brake input member. The linkage assembly includes a pushrod and a resilient member. The pushrod has an end member which is engagable with the plunger. The resilient member is attached to the pushrod end member. The resilient member has an end which is engagable with the plunger when the pushrod end member is spaced apart from the plunger. The resilient member deforms to allow the pushrod end member to directly engage the plunger when the pushrod end member is moved towards the plunger. One of the end and resilient members surrounds a portion of the other of the end and resilient members. The resilient member may be a sleeve which surrounds an end portion of the pushrod. Or, the resilient member may be surrounded by a hollow end portion of the pushrod.

A control mechanism for manually adjusting a plurality of control parameters, the control mechanism including a mechanical multiple axis handle movable about three axes of rotation for operating an operated device, wherein each of the axes of rotation pass through the handle, and a movement transformation assembly to transform rotational movements of the handle to control commands to the operated device.

A control mechanism for manually adjusting a plurality of control parameters, the control mechanism including a mechanical multiple axis handle movable about three axes of rotation for operating an operated device, wherein each of the axes of rotation pass through the handle, and a movement transformation assembly to transform rotational movements of the handle to control commands to the operated device.

A machine according to an aspect of this disclosure moves a lever movable in a first direction and a second direction perpendicular to the first direction. This machine includes a base member, a first actuator, a second actuator, a connector, a first frame, a second frame, and a third frame. The first actuator has a first output shaft that moves along the first direction. The second actuator has a second output shaft that moves along the second direction. The first frame has a first proximal end where a first joint is disposed and a first distal end where the second joint is disposed. The second frame has a second proximal end connected to the first distal end via the second joint, and a second distal end where a third joint is disposed. The third frame has a third proximal end and a third distal end, and the third distal end is connected to the second output shaft of the second actuator.