Abstract: A rotationally symmetrical lead metal-cut projectile of the caliber ranging from 0.17 to 0.50 for gas-guns comprises at least 60% by weight of lead, up to 40% by weight of tin and up to 5% by weight of admixtures selected from the following list: Ag, As, Bi, Cd, Cu, Fe, Ni, Sb, Zn, Ti or their mixtures thereof.

Abstract: A gun powered by compressed gas with no loss-making expansion space, having: a pressure chamber interconnected with a barrel, and a projectile opening of the barrel at an inlet of the pressure chamber, the pressure chamber and the barrel being mutually lockable by a valve, wherein upon firing the gun: the pressure chamber and the barrel form one space, the valve is connected to a tie rod, and passes through the pressure chamber to a striker space, wherein within the striker space: the tie rod is fitted with a spring, the striker and an end of the tie rod are equipped with a stop, and the spring is positioned in the striker space between the striker and a special section wall, and wherein: the barrel, tie rod, valve, and striker are mounted along one axis, and the valve is controlled by the striker via the tie rod.

Abstract: A rotationally symmetrical lead metal-cut projectile of the caliber ranging from .17 to .50 for gas-guns comprises at least 60% by weight of lead, up to 40% by weight of tin and up to 5% by weight of admixtures selected from the following list: Ag, As, Bi, Cd, Cu, Fe, Ni, Sb, Zn, Ti or their mixtures thereof.

Abstract: Thanks to its unique design, the body (23) of the gas powered gun has a minimum or even no loss-making expansion space. Energy losses in the gas powered gun with the body (23) according to the present invention are minimal and all energy of pressurized gas is utilized for firing. The barrel (8), tie rod (11) of the valve (9), valve (9), and striker (14) are mounted in one axis and the valve (9) connecting the pressure chamber (3) and the barrel (8) is controlled by the striker (14) through the tie rod (11) of the valve (9). The pressure chamber (3) is interconnected with the barrel (8), where the projectile opening (29) of the barrel (8) is at the inlet into the pressure chamber (3), whereby the pressure chamber (3) and the barrel (8) are mutually lockable by the valve (9), and upon firing, the pressure chamber (3) and the barrel (8) form one space.

Abstract: A rotationally symmetrical lead metal-cut projectile of the caliber ranging from 0.17 to 0.50 for gas-guns comprises at least 60% by weight of lead, up to 40% by weight of tin and up to 5% by weight of admixtures selected from the following list: Ag, As, Bi, Cd, Cu, Fe, Ni, Sb, Zn, Ti or their mixtures thereof.

Abstract: A method of charging a battery of a device using a battery of a computer powered by the battery, in which the procedure is implemented by a circuit independent of the computer's processors. The method includes supplying a power supply voltage, insufficient to charge a battery, to a computer port, as long as a device is detected as connected to the port, controlling the supply of a charging voltage to the port, while supplying charging voltage to the port, detecting an end of charging condition of a battery of the device, and controlling the cutting off of the charging voltage to the port if the end of charging condition is detected, where this condition is determined according to the intensity of a charging current and according to a quantity of electrical charge supplied to the port and/or of a charging period.

Abstract: A method of charging a battery of a device using a battery of a computer powered by the battery, in which the procedure is implemented by a circuit independent of the computer's processors. The method includes supplying a power supply voltage, insufficient to charge a battery, to a computer port, as long as a device is detected as connected to the port, controlling the supply of a charging voltage to the port, while supplying charging voltage to the port, detecting an end of charging condition of a battery of the device, and controlling the cutting off of the charging voltage to the port if the end of charging condition is detected, where this condition is determined according to the intensity of a charging current and according to a quantity of electrical charge supplied to the port and/or of a charging period.

Abstract: A method of charging a battery of a device using a battery of a computer powered by the battery, in which the procedure is implemented by a circuit independent of the computer's processors. The method includes supplying a power supply voltage, insufficient to charge a battery, to a computer port, as long as a device is detected as connected to the port, controlling the supply of a charging voltage to the port, while supplying charging voltage to the port, detecting an end of charging condition of a battery of the device, and controlling the cutting off of the charging voltage to the port if the end of charging condition is detected, where this condition is determined according to the intensity of a charging current and according to a quantity of electrical charge supplied to the port and/or of a charging period.