Abstract: A useful and practical support pole (10) for supporting protection nets (20) installed for safety purposes along the edge of a ski slope (PS), characterized by marker elements (15, 15?, 15?) adapted to mark a predetermined depth (P) at which the support post (10) has to be properly driven into the snow pack (MN) of the ski slope (PS) for proper and optimized positioning of such support pole (10) as it is driven into the snow for supporting the protection net (20). Advantageously, the support pole (10) and the corresponding protection net (20) supported by such poles driven into the snow obviate certain non-negligible drawbacks of prior art currently used protection nets for ski slopes and particularly considerably reduce the risk of injury for the skier, as he/she hits these protection nets.

Abstract: A gate for ski sports indicates and traces the path to be followed by a skier on a ski slope and has two poles to be driven into the snow pack and a panel joining the poles at their upper portions. An indicator associated with the poles indicates a predetermined height of the panel relative to the snow pack thereby allowing correct height-positioning of the panel. The indicator may be a white or colored band, text, a band combined with text, or other forms and be at various locations to indicate the predetermined height of the top and bottom edges or both edges of the panel. This facilitates easy and correct height-positioning of the panel particularly according to applicable regulations and standards, to thereby considerably reduce the risk of dangerous and disastrous collisions of the skier against the gate.

Abstract: A dental reamer/file is in the form of an elongated shank having a proximal end portion and a distal end and a tapered working portion of determined length extending therebetween, the external surface of the shank working portion having at least two equally spaced apart continuous concave helical flutes and therebetween an equal number of spiraled, spaced apart flanges, each flange having in a plane perpendicular to the length of a longitudinal axis of the shaft an outer end defined by a first and a second surface intersecting at a point of maximum radius from the axis, the first surface being relatively short and the second surface relatively longer, the point of maximum radius providing a spiraled scraping edge.

Abstract: An endodontic file having an elongated shank with a proximal end portion, a distal end and a tapered working portion extending from the proximal portion to the distal end, the external surface of the shank working portion being defined in part by a plurality of at least two equally spaced apart continuous helical flutes formed into a central core portion of the shank working portion, the flutes having therebetween an equal number of spiraled spaced apart flanges, each flange having a semi-circular surface having a leading edge and a trailing edge, each edge being in or parallel to a plane of the shank longitudinal axis, each leading and trailing edges providing a cutting or scraping edge.

Abstract: An endodontic file having an elongated shank with a proximal end portion, a distal end and a tapered working portion extending from the proximal portion to the distal end, the external surface of the shank working portion being defined in part by a plurality of at least two equally spaced apart continuous helical flutes formed into a central core portion of the shank working portion, the flutes having therebetween an equal number of spiraled spaced apart flanges, each flange having a semi-circular surface having a leading edge and a trailing edge, each edge being in or parallel to a plane of the shank longitudinal axis, each leading and trailing edges providing a cutting or scraping edge.