The tile spacer is a four winged rectangular prism having a rectangular prism in its center, whereas each of the wings in the direction of their longitudinal axis are perpendicular to one of the two mutually perpendicular facets of the central prism while having a facet in common with the other facet of the prism. In the center of the rectangular prism there is a rectangular hole on the same axis, with facets that are parallel to the facets of the rectangular prism, whereas the width and the height of the wings are respectively equal to the width and height of the walls of the rectangular prism. The central prism of the tile spacer can be an even faceted four angled prism, whereas each of the wings in the direction of their longitudinal axis are perpendicular to one of the two mutually perpendicular facets of the central prism while having a facet in common with the other facet of the prism. In the center of the even faceted four angled prism of the tile spacer there is a quadrant hole on the same axis, with its facets parallel to the facets of the central prism, whereas the width and the height of the wings are respectively equal to the width and height of the walls of the prism. The edges of the tile spacer wings can be rectangular or curve-shaped.

(57) Volumetric rotary machine, which may be used as an internal combustion engine, compressor, pump, hydraulic and pneumatic engines. The machine has similar two-rib or three- rib rotors set between the casing's (1) working surfaces. The minimum numbers of three-rib rotors (2) is three, and two-rib rotors (3) are respectively three and four, excepting five. Every three three-rib or four two-rib adjacent rotors with their cylindrical surfaces form closed working chambers. The working chambers are restricted by the casing's working surfaces, from the sides of the rotors' face surfaces. Due to the kinematic relation, the rotors synchronously revolve in the same direction. During the revolving of the rotors working chamber volume periodically changes from zero to its maximum value and vice versa. The symmetry axis, perpendicular to the face surfaces of the rotor, is the rotation axis of each rotor. The rotors' rotation axes are parallel to each other and perpendicular to the casing's working surfaces. The distance of the adjacent rotors' rotation axes is equal to the radius of their cylindrical surfaces. The square of the distance of the rotation axes of the opposite two-rib rotors is the double square of the cylindrical surfaces' radius.

This invention refers to solar technology, in particular, to solar collectors in the form of a heat pipe, and can be used to heat liquid or gaseous heat carriers. The solar heat collector contains a heat carrier channel and a heat pipe that includes evaporating and condensing sections and comprises of a front corrugated wall and a base, which are the sides of a planar pipe. In the condensing section of the heat pipe there is a broadening, in which the tube-shaped heat carrier channel is placed. The construction is simplified, the technology id improved, the heat removal surface is increased.

The invention refers to photonics, in particular to the development of optoelectronic components of photonics. Possible fields of the invention application are: adaptive optics, optical correlation, image processing, holographic record, as well as displays. In order to control the birefringence of planar oriented nematic liquid crystal simultaneously and synchronously with the voltage applied between two substrates of nematic liquid crystal cell an additional voltage - bipolar electric pulse, is applied along to one of substraits of the liquid crystal cell. The controlling of the bievergence of nematic liquid crystal with proposed method create an opportunity to reduce switching time and improve the modulation characteristics of the nematic liquid crystal cell. To realize the method a nematic liquid crystal cell is proposed in which one contact area is formed on the transparent conducting layer of one substrate, and two contact areas are formed on the transparent conducting layer of the other substrate to provide control voltages application.

Lock containing a case with a locking bar therein, a detachable cylindrical mechanism with a carrying arm rotating at 180°. Projection is made at the end of the carrying arm of the detachable cylindrical mechanism which has a cylindrical surface, and a spring-loaded arm is fixed on one end of the rotatable locking bar so that in the open position of the locking bar the axis of the hole made on the other end of this arm is coaxial to the axis of the projection made at the end of the carrying arm of the cylindrical mechanism placed in the lock. As a technical outcome of this invention, the lock construction is simplified, and its reliability and operational capacities are improved.

The invention refers to the transducers accumulating compressed air energy by the use of human muscle strength or by the use of kinetic energy of the bicycle that conduct that energy to the bicycle at that moment, which have the possibility also to accumulate energy from an external source, for example: electric engine upon the stoppage of the bicycle. The essence of the invention is that in the reversible transducer of compressed air energy, which is formed of the high efficiency double cylinder-piston combined compressor- engine, controlled transmission, which is connected with the compressor-engine and with the rear wheel of the bicycle, control mechanism, which has two levers with control links and a compressed air tank fixed on the frame of bicycle, according to the invention the transmission is realized two channeled, the first is connected with the carrying element (chain), and the second with the rear wheel.

The invention refers to the bottles intended for beverage. The bottle neck for beverage is closed by the screw cover consisting of two-pieces. At infringement of the uniting sheaf, one of the parts is separated, and the other one remains on the bottle neck. The separated part of the cover has carving and glass form parts. A short tube is attached to the bottle neck. In the place of short tube and bottle neck connection, there is a ring-shaped dredging with through apertures and cone-shaped thickening. Inside of the separated part of the cover, on the border of carving and glass-form parts, there is a large corresponding to the dredging sizes and form, and on the top part of cover there is a dredging clasping hardly the edge of the short tube. The structure becomes simpler-the cost price is decreased.

The present invention is related to concentrating transducer systems of solar energy and can be used for transducing solar energy into electrical and/or thermal energy. The transducer comprises semiconductor photovoltaic transducers which are allocated on the heat sink in the linear focus and directed towards the mirrors in a special way. The mirrors near the centre are positioned on a flat surface and the marginal mirrors far from the centre are positioned without any gap and form a parabolic surface. The operation efficiency of the concentrating transducer of solar energy is increased and the transducer cost is decreased.

The invention concerns the electric asynchronous engines including a rotor as a flat disc, and a stator, which is coaxial to the rotor, and is installed with a working backlash relative to the rotor's disk. The stator includes three laminated packages of cores with phase coils, which are situated around the shaft of the motor under 120° angle, one in relation to other. The cores' packages are enclosed between the first and the second flat base plates, which are executed from nonconductive material, and the planes of the base plates are perpendicular to the axis of the shaft. The cores are executed as rectilinear laminated packages, and their axes are parallel to the shaft's axis. The second base plate is identical to the first one, and the butt-ends of the other side of the cores' packages are fixed in it. The invention is presented in three variants, where different fulfillments of the motor are shown: with a sectioned stator, with a sectioned rotor or with the stator and the rotor both sectioned.

The invention concerns rechargeable zinc electrodes for the use in rechargeable batteries. More particularly, the invention relates to electrically rechargeable porous zinc electrode incorporating Low Hydrogen Overvoltage Substances (LHOS) thus presenting reduced dendritic propagation, lesser electrode passivation and shape change and finally resulting in an increased number of charge/discharge cycles.