Patent ID: 7064461

Claim:
An electromagnetic force device arranged to provide a force, wherein the force device includes a first end portion and a second end portion, the force device including: an elongated holder element, designed as a rod; a first magnet element, which includes a first magnet and is connected to the elongated rod in such a way that the first magnet element is substantially stationary in relation to the rod; a second magnet element, which includes a second magnet and is slidably connected to the rod in such a manner that it is displaceable along the rod towards and away from the first magnet element, wherein at least one of said magnets includes an electromagnet; a locking member arranged to prevent rotation of said magnet elements in relation to the rod, said locking member including a primary locking member of the rod and a secondary locking member of said magnet elements, which locking members are arranged to coact with each other; and an effect unit, which is arranged to provide an electric effect to said electromagnet for generating a force acting on the second magnet element in a first direction from the first magnet is element, wherein the first end portion and the second end portion will approach each other when the first and second magnet elements approach each other, and become more distant from each other when the first magnet and the second magnet become more distant from each other.