Abstract: A depth detection apparatus, in particular in intracorneal dissection, provides a perforating tubular element suitable for being inserted into the cornea, a reciprocally moving air volume generator (14) connected to the perforating tubular element, a pressure sensor for detecting the pressure along the connection between the volumetric generator and the perforating element in the reciprocal movement of the volumetric generator, a microcontroller connected to the pressure sensor to detect pressure variations with the depth advancement into the cornea of the perforating element, a signaller connected to the microcontroller to signal that a preset pressure variation has been reached. The apparatus enables a correct position to be determined for performing intracorneal dissection.

Abstract: A depth detection apparatus, in particular in intracorneal dissection, provides a perforating tubular element suitable for being inserted into the cornea, a reciprocally moving air volume generator connected to the perforating tubular element, a pressure sensor for detecting the pressure along the connection between the volumetric generator and the perforating element in the reciprocal movement of the volumetric generator, a microcontroller connected to the pressure sensor to detect pressure variations with the depth advancement into the cornea of the perforating element, a signaller connected to the microcontroller to signal that a preset pressure variation has been reached. The apparatus enables a correct position to be determined for performing intracorneal dissection.

Abstract: Methods for coating threaded metallic pieces which include using a threaded metallic piece as a cathode of an electrolytic cell in a bath which includes Zn ion and whereby electro-deposition of a first layer containing Zn takes place followed by deposition of a second layer of a polyester-based paint are provided. Such processes are especially useful for components of the automobile industry, such as wheel screws.

Abstract: The guide member for enabling an associated mechanical part to be slidable and centered, includes a shank extending along a longitudinal axis. A circumferential portion of the external surface of the shank is provided with helical grooves, wherein the crests formed between respective pairs of adjacent turns of the grooves have a flat surface substantially parallel to the axis of the shank.