Patent ID: 8794415
Filing Date: 2014-08-05
Classification: F16D,F16H

Abstract:
1. A form-fit control element to be activated in hydraulic or pneumatic manner, comprising: a main piston hydraulically or pneumatically operable, having a piston compartment containing hydraulic medium or pneumatic medium, a pressure medium supply providing a volumetric flow to move the main piston, a first jaw and a second jaw into which the first jaw meshes when the first jaw and the second jaw engage, a hydraulic or pneumatic pressure reservoir that is connected to the main piston and the pressure medium supply, wherein the hydraulic or pneumatic pressure reservoir comprises wherein the piston compartment connects to the piston accumulator and the pressure medium supply in parallel, wherein, when the first jaw and the second jaw are in a tooth butt position with respect to each other so that the main piston is unable to move by the volumetric flow out of the pressure medium supply, the accumulator piston is moved by the volumetric flow so that hydraulic energy from the pressure medium supply is stored in the piston accumulator as spring energy, and wherein, when the first jaw engages with the second jaw from the tooth butt position, the spring energy is transferred to the piston as hydraulic energy in order to accelerate closing of the form-fit control element, guaranteeing that a bearing flank of the first jaw and a bearing flank of the second jaw are adequately overlapping.