Abstract: An inverter with uninterruptible power supply for a water pump includes a plurality of DC cells connected in series to form a cell unit providing a DC power source approximately equal to a working voltage. A frequency conversion/voltage stabilizing circuit has an input side electrically connected to the DC power source and an output side electrically connected to a water pump. The frequency conversion/voltage stabilizing circuit is capable of providing conversion between AC and DC and changing output AC power frequency and output voltage. The output side outputs an AC power with an AC working voltage to the water pump. The effect and operational stability of the water pump can be enhanced.

Abstract: A supporting assembly includes a base plate attached to an underside of a desk, a carrier slidably attached to the base plate, and a mounting seat rotatably attached to the carrier to slide therewith. A connecting plate, a linking plate, and at least one linking piece are connected between the mounting seat and a supporting seat for supporting articles to securely retain the supporting seat in a desired level and inclination angle. A positioning device with a lever arm is provided to adjust the desired level and the inclination angle.

Abstract: A carrier device includes a mounting seat securely attached to an object and a connecting seat attached to and movable relative to the mounting seat, the connecting seat including a first transverse pin mounted to a first end thereof and a second transverse pin mounted to a second end thereof. A stop plate is pivotally mounted to the connecting seat and includes a retaining section. A movable seat includes a first end pivotally connected to the connecting seat and a second end. The first end of the movable seat includes two aligned arcuate slots through which the second pin extends. An engaging plate includes a first end having aligned slots through which the second pin extends and a second end having a third pin mounted thereto. The engaging plate further including an engaging section for releasably engaging with the retaining section of the stop plate. A spring includes a first end securely attached to the first transverse pin and a second end securely attached the third pin mounted to the engaging plate.

Abstract: A positioning device includes a mounting frame mounted to an underside of a chair seat. The mounting frame includes a positioning portion having a plurality of vertically spaced engaging notches. An adjusting base is mounted to the mounting frame and yet allows relative pivotal motion therebetween. A spring-biased adjusting rod is movable between a first position where the mounting frame is rockable relative to the adjusting base and a second position where the mounting frame is not rockable relative to the adjusting base.

Abstract: A leg assembly for a chair includes four legs, a pair of lateral beams each interconnected between two of the four legs, and a pair of transverse beams interconnected between the lateral beams. A seat cushion is mounted on the transverse beams and has a plurality of nuts attached to an underside thereof. Each lateral beam includes two spaced tubes extending therefrom toward the other lateral beam, each tube having a first transverse bore defined therethrough. Each transverse beam includes two reduced ends each having a second transverse bore defined therethrough. The reduced ends of each transverse beam are respectively received in two aligned tubes respectively on the lateral beams, and a plurality of bolts are extended through the aligned first and second bores and then engaged with the associated nuts mounted on the seat cushion.

Abstract: Fluorescent ink compositions and methods for using the ink co positions in drop-on-demand ink jet printers is provided. The fluorescent ink compositions are formulated with an aromatic alcohol, a glycol, a fatty acid, and at least one fluorescent pigment.