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The uninterrupted battery operated generator system 50 of the present invention generates electrical and kinetic energy without using fossil fuel or external energy sources to recharge. It uses two sets of energy storage means 11, 12 alternatively, to power a rotational torque generating means 15. The rotational torque generating means 15 drives the rotational movement of a flywheel 31 coupled to gyroscopes 35, which store and multiply kinetic energy. An alternator 16 is driven by the rotational torque generating means to convert this kinetic energy into electrical energy. The flywheel 31 can also be fitted with a rail 42 engaging with a transmission roller 43 to transfer the kinetic energy via a transmission shaft 44 to a receiving system such as a vehicular or machinery transmission system. Some of the electrical energy generated can be used to recharge the energy storage means 11, 12, which have a charging time shorter than the operating time. A controller 10 connected to load sensor 19, voltage sensor 13, and frequency sensor 14 controls the power supply to the rotational torque generating means 15, thereby enhancing the energy efficiency, thus creating an uninterrupted battery operated generator system 50.

A pressing cylinder (1), preferably for use in a refuse compressor for compression of refuse, which when in use is preferably in a vertical position, and at the bottom is coupled to a pressing plate (2) and at the top to a secured top plate (3) and which can activate the pressing plate in upward and downward directions, is composed of preferably three cylinder sections, namely a first and lower cylinder section (4), which at the bottom is attached to the pressing plate (2), a second and intermediate cylinder section (5), which can be displaced telescopically in the cylinder's longitudinal direction on the first cylinder section (4), and a third and upper cylinder section (6), which at the top is attached to the top plate (3), and which can be displaced telescopically on the second cylinder section (5). The cylinder section (6) is at the bottom embodied with a bottom plate (7), which in combination with the cylinder section (6) and the top plate delimits a closed hollow space (8). Between the periphery of the bottom plate (7) and the bottom edge of the cylinder barrel of the cylinder section (4) there is internally in the pressing cylinder clamped an approximately cylinder-shaped bendable diaphragm in the cylinder's extended position, whereby an airtight space (10) is created internally in the pressing cylinder. The bottom plate (7) is embodied with an access opening for compressed air, which is admitted to the space (10) through a pipe (12) from a three-way valve (13), which in an initial position opens for compressed air from a compressor (14), and in a second position opens the space (10) to the atmosphere.

The invention discloses a synthetic method of 4-(2,2-difluoro-1,3-benzodioxole-4-yl)pyrrole-3-nitrile. The method comprises the following steps of: preparing an intermediate 2,2-difluorobenz-1,3-dioxole through reacting catechol with dibromodifluoromethane, and preparing an intermediate 2-cyano-3-(2,2-difluorobenz-1,3-dioxole-4-yl)-2-acrylate. The fludioxonil prepared by the synthetic method provided by the invention has the purity of more than 99.0% and the total yield of more than 45.0%; the synthetic method has the advantages of cheap and easily available raw materials, simple process, high product yield in each step, good purity, low production cost, applicability to batch industrial production and the like.