Patent ID: 7811202

Claim:
A device for an exercise apparatus, having two hanging, length-adjustable and lockable ropes which at its lower end have gripping means, the device further comprising, a vibration means configured when attached via a rope engaging member to a portion of such rope, to impart to the rope and thus its gripping means a vibratory motion, the vibratory means having two rope engaging members, each of which is designed to be fastened to a respective one of the ropes for vibration of the ropes, and the vibration means having one common drive motor for the pair of ropes, the drive motor being equipped with a rotation arm transverse to the rotational axis of the motor, which at one outer end is pivotally fastened to a first set of links which is associated with a first rope engaging member, and is also rigidly fastened to a first end of a first link in a second set of links, and that the first link in the second set at its second end is pivotally connected to another link in the second set which is associated with a second rope engaging member.