Patent ID: 8312977
Filing Date: 2012-11-20
Classification: F16D

Abstract:
1. An apparatus for producing a frictional and/or form-fitting connection between components which are movable linearly or rotated relative to one another for transmitting forces and/or force moments that act between the components in a linear and/or rotational manner, wherein the first component surrounds the second component with at least one inner wall facing the second component, wherein: the second component includes elongated active face elements which are pivotable about a common rotational axis or about separate rotational axes that are parallel to one another in a region of one of the active-face elements and are moved in response to a force from a first position, in which the active-face elements are spaced apart from an inner wall, into a second position, in which the active-face elements produce the frictional and/or form-fitting connection with the inner wall, at least one mechanical stressing element connected to the active-face elements and exerting a restoring force acting between the active-face elements and holding the active-face elements in the first position, a kinematic system acting upon the active-face elements to provide a force opposite to the restoring force which is driven exclusively by a converter material, and wherein the kinematic system is connected to the active-face elements at ends of the active-face elements and transfers the active-face elements into the second position; and wherein the kinematic system comprises a toggle lever that is connected to the active-face element ends and on which a wire or strip of converter material extends, wherein the converter material is coupled to the active-face element ends and changes shape upon being supplied with energy, so that the toggle lever opens into a spread position and the active-face elements are transferred into the second position.