US Patent 10080436 Levelling device with from above mounted sleeve and use

The present invention is directed to a levelling device, which includes a top part and a lower part, where there in the top part is included a spindle, which includes a thread and an external cylindrical surface, a stop item and a sleeve, which includes at least one internal stop surface and that the spindle includes at least one track in which the stop item is placed. With the invention it is achieved that it is possible to manufacture a levelling device, where the sleeve, as a result of the stop surface on the sleeve and the stop item, which is mounted in the track on the spindle cannot be screwed so high up that parts of the thread on the spindle are exposed.