Patent ID: 7584828

Claim:
A clamping or braking device comprising: a housing having a stop area; at least one plate-shaped element held in the housing and supported with a first end with respect to the stop area of the housing, the plate-shaped element for transferring clamping or braking forces with a second end to an object; wherein the plate-shaped element has at least one bending area which is convex in a starting state, which is pressure-resistant and nevertheless elastically deformable so that the bending area forms an elastic element between the stop area of the housing and the second end of the plate-shaped element; wherein a pressure space is formed between the convex side of the at least one bending area of the at least one plate-shaped element and the housing and the pressure space can be acted on with excess pressure of a pressure medium which can be supplied to the housing; wherein the at least one plate-shaped element is so constructed that when the pressure space is acted on with excess pressure, a movement of the second end of the at least one plate-shaped element takes place in the direction of the object as a result of a reduction of the curvature of the bending area; or an increase in the clamping or braking forces which can be transferred to the object by second end of the plate-shaped element is brought about; wherein the at least one plate-shaped element includes either a) radial slits which open inwardly, wherein the second end of the plate-shaped element is formed by the inside end of the plate-shaped element; or b) radial slits which open outwardly, wherein the second end of the plate-shaped element is formed by the outside end of the plate-shaped element; and one or more sealing elements disposed along the surface of the at least one plate-shaped element, at least in the area of the radial slits, inside or outside, relative to the pressure space.