A composite passive armor protection having geometric solids embedded in a matrix, characterized in that it consists of the parallel non- adjacent plates (1, 2), wherein the upper plate (2) has grooves (3), in which are resting the geometric solids (4) embedded in a light alloy matrix (5), preferably to a level above one half of their total height, while the space between the parallel plates is a layer of light alloy (6).

A composite passive armor protection comprises a structure, embedded in the light alloy matrix (1), wherein said structure is made of geometric solids (2), resting on brackets (3), passing through the holes in plate (4), wherein said brackets (3) have precuts in the walls located at a height above and below the plate (4), wherein in said precuts in the walls are secured rods (5) in such a way that they form a grid, wherein the geometric solids (2) are embedded in the light alloy matrix (1), preferably to a level above one half of their total height, and wherein the rods (5) are preferably fixed in such a way that their longitudinal axes coincide with the axes of the geometric solids (2).

A composite passive armor protection comprises a structure embedded in the light alloy matrix (1), wherein said structure is made of elements in the form of geometric solids (2), resting on a frame in the form of a grid made of the permanently connected layers of tubes (3), wherein preferably through the tubes (3) are passing fibers (4), and the geometric solids (2) are embedded in the light metal alloy matrix (1) to a level above one half of their total height.

A composite passive armor protection comprises a structure, embedded in the light alloy matrix (1), wherein said structure is made of geometric solids (2), resting on brackets (3), passing through the holes in plate (4), wherein said brackets (3) have through-holes located at a height above and below the plate (4), wherein in said through-holes are secured rods (5) in such a way that they form a grid, wherein the geometric solids (2) are embedded in the light alloy matrix (1), preferably to a level above one half of their diameter, and wherein the rods (5) are preferably fixed in such a way that their longitudinal axes coincide with the axes of the geometric solids (2).

Method for testing the abrasive wear of machine parts in high temperature and with high unit pressures and a unit for testing the abrasive wear of machine parts in high temperature and with high unit pressures, enabling the establishing of abrasive wear occurring during the operation of machinery exposed to high temperature and high unit pressures, where the steel becomes plastic, eg. in hot forging tools. The method consists of a counterpiece (4) having the form of a rod being placed axially in a container (1) heated to a temperature in the range of (500-1000) K, ending in a sample (5) with an axial hole (6) and a side channel (7), and then is pressed out through a slot closed with a sliding element (8), created between the surface of the sliding element (8) and the side channel (7) in the sample (5), by acting with a shaft (9) of a punch (10) on the counterpiece (4) placed in the opening of the sample (5), creating unit pressures in the range of (300-1200) MPa, whereas the speed of movement of the sliding element relative to the slot is 100 m/min.

The invention solves a problem of a carriage (1) assembly for an airplane transporting system on an airport apron, from a parking location to a runway and from a landing to the parking location with an airplane's engine off. The carriage assembly is formed by a guiding groove (3) with a rectangular cross-section, a floor (5) of which being provided with lower guide rails (6), and side walls (7) of which being provided with side guide rails (8), and the carriage (1) is constituted by a spatial structure (9), having a bottom part (10) and side parts (11), the carriage (1) being provided with a lower vehicle wheels set (12), fixed at the bottom part (10) of the carriage (1), and a side vehicle wheels set (13) fixed at both side parts (11) of the carriage (1).

The object of the invention is the lift used primary in wheelchairs for adjusting the positioning of the seat, and simultaneously for changing the positioning of the person sitting in the wheelchair. According to the invention, the upper frame (1) consists of a horizontal stable part (2) and tilt plate (3). The tilt plate (3) is rotationally and slidably deposited with bolts (8) in the guides (4) of the stable part (2). The second support of the tilt plate (3) is the tilt arms (5) which are connected with the tilt plate (3) rotationally with the use of the bolts (6). The tilt arms (5) are deposited with the lower end in the bolt (7), fixed in the stable part (2) of the upper frame (1). The tilt system constitutes an actuator (9), deposited with one end rotationally in the stable part (2), and with the second end rotationally fixed with the lever (10). The lever (10) is permanently deposited on the axis (11), where also the cam (12) is seated. In the cam (12) there is a slit (13), where the bolt (14) seated in arms (5) is displaced. The basis of the lift is the lower frame (16), where the arms (17) and (18) of the scissor jack mechanism are rotationally fixed.

A system for continuous detection of cord defects in flat steel-plastic elevator ropes comprises an integrated measuring head with pulsed inductor (1) of variable magnetic field and detector (2) of stray field (5), a signal processing block (6), a signal analyser (7) and a data carrier (8). The inductor (1) and the detector (2) are situated over the surface of the rope (3), deployed along cords (4) and along direction of motion (V) of the rope (3) one by one at a small distance (AL) from each other.

A manually-powered vehicle propelled by muscular force, whose user maintains a standing position, and whose drive is hand-held. The vehicle according to the invention consists of two drive wheels (1), with independent mechanisms (2) installed inside them, which transform the swinging motion of the levers (5) into unidirectional gyration of the drive wheels (1) axis (6) thus driving the vehicle forward, at least one neutral wheel (3) mounted in a way allowing rotation around the vertical axis, and where a low-slung platform (4) is attached directly to the casing of the mechanisms (2).

A fastening method consists in a permanent spot-joining together of planes (11, 11', 11") of a cover plate (10, 10', 10") comprising vertical side walls (3) and inner walls (6) of a tray (1), at the places of holes (7) made in the walls (3, 6), whereas the planes (11,11', 11") cover lateral surfaces (13, 13',13") of an insert (9, 9', 9'') disposed on the bottom (4) of each segment (5) and lateral surfaces (12, 12', 12") of a shield (8, 8', 8'') put onto the upper edge of each Vertical wall (3, 6). The planes (11,11' 11") are connected by means of their recesses (14, 14', 14") made at the places of the holes (7) and are joined by means of welding, riveting or gluing. The tray (1) made of a dielectric material has vertical side walls (3) and inner walls (6), provided with the holes (7), forming together with the bottom (4) the segments (5). Oft the upper edge of the vertical walls (3, 6) U-shaped metal shields (8, 8', 8'') are situated, and on the bottom (4) the metal inserts (9, 9', 9'') in each segment (5) are situated. The cover plate (10, 10', 10") is put onto the vertical edge of the walls (3, 6) and encloses with its planes (11,11',11") the vertical lateral surfaces (12, 12', 12") of the shield (8, 8', 8'') and the vertical lateral surfaces (13, 13', 13'') of the insert (9, 9', 9''). The planes (11, 11') have the recesses (14, 14') directed to each other, and the lateral surfaces (12, 12') of the shield (8, 8') and the lateral surfaces (13, 13') of the insert (9, 9') have the recesses (14, 14') with which they are joined in the holes (7) of the walls (3, 6), whereas the planes (11"). the lateral surfaces (12") of the shield (8'') and the lateral surfaces (13") of the insert (9'') are smooth and joined through the metal discs (15") disposed in the holes (7).