Abstract: A microscope for a medical procedure includes: image sensors 10 creating image data; a lighting prism 20 transmitting an image of an object, which is input, to the image sensors such that an image is formed; pre-lenses 30 disposed in a pair at both sides behind the lighting prism 20 and enlarging an image of an object, and transmitting the image to the image sensors 10; objective lenses 40 provided in a pair, selectively disposed on virtual axes connecting the pair of pre-lenses 30 and the pair of image sensors 10, respectively; displays 60 provided in a pair and displaying composed image data by integrating image data converted through the image sensors 10; and an image processing unit 70 receiving image data transmitted from the image sensors 10, combining the image data with medical information transmitted from an external server, and transmitting composed image data to the displays 60.

Abstract: A tubular shaft for a golf club or similar sports apparatus having a rigidized construction. The tubular shaft wall has a three-dimensional textured surface pattern formed by a plurality of alternate areas of convexity and concavity extending on corresponding sides of a neutral longitudinal axis through the shaft wall. The material distribution provides increased resistance to vertical, horizontal and torsional stresses without additional weight.

Abstract: A unitary tennis racket frame is formed of a relatively strong, e.g. metal, skeleton and a molded high impact thermoplastic. The skeleton serves as a mold core for the plastic and includes a generally U shaped outwardly facing channel having a plurality of oversized string holes in the bow. The mold for the composite racket includes a plurality of movable core pins which extend into the cavity in registry with the skeleton string holes. The plastic is injection molded into the cavity and around the pins which, when retracted, form the string holes.