Abstract: The present invention relates to a vertical axis turbine 1 apparatus for converting movement of a fluid into electrical power and a method of manufacture of a turbine. The turbine can be installed on a flexible line 2, such as a cable, rope or stay. It could be used on the stay of a yacht. The main rotor 13, 14 of the turbine has least two helical blades arranged about the longitudinal axis with rotational symmetry, the blades being substantially identical in shape and having a lift-producing cross-sectional shape at least along a part of their longitudinal length. A generator 22 coupled to the main rotor 13, 14 and is contained in a generator housing 23.

Abstract: The present invention relates to a vertical axis turbine 1 apparatus for converting movement of a fluid into electrical power and a method of manufacture of a turbine. The turbine can be installed on a flexible line 2, such as a cable, rope or stay. It could be used on the stay of a yacht. The main rotor 13, 14 of the turbine has least two helical blades arranged about the longitudinal axis with rotational symmetry, the blades being substantially identical in shape and having a lift-producing cross-sectional shape at least along a part of their longitudinal length. A generator 22 coupled to the main rotor 13, 14 and is contained in a generator housing 23.

Abstract: Apparatus for use in operating a dental drill is disclosed in which the air, water and light for the hand-held drill member are each delivered from an associated supply source, all of which are adapted to be located at a position remote from the working end of the drill and are coupled to the drill through a conduit cable, and in which control means for the selective energization of the light supply source is located within easy reach of the operator to permit turn-on and/or turn-off of the light supply source through simple fingertip control provided within a remote control unit which is totally electrically isolated from the high voltage present in the light supply source to protect both the operator and the patient from shock or injury. The light supply source may be automatically energized merely by lifting the instrument containing the dental fiber optics.The light unit may be independent of the dental drill to permit a wide variety of uses independently of its use with the dental drill.

Abstract: An autoclavable instrument, such as an autoclavable laryngoscope, is provided which includes fiber optics illuminating means and is especially adapted for medical and/or dental applications. The illuminating means includes an elongated sintered glass rod formed from an oriented fiber optics bundle comprising a plurality of glass fibers. The elongated glass rod may include curved or bent portions so as to conform to the contours of the instrument. A method is also provided for making an instrument as described above.