Abstract: A dual-direction pump includes two cylinders arranged on opposite sides of a head portion and an inlet return-flow prevention device and a leakproof device mounted between the cylinder and the head portion for avoiding leakage at the juncture between the cylinder and the head portion or leakage induced by reverse flow in one of the cylinders in the case of a single-sided pumping operation in the other cylinder. The head portion has an outlet port to which an outlet return-flow prevention device is mounted. A knob is rotatably mounted to the outlet pot and a nut is fixed to the knob for selectively engaging an inflation valve to avert detachment. The outlet return-flow prevention device prevents reverse or return flow induced in the outlet port in order to reduce resistance caused thereby and enhances pumping efficiency.

Abstract: A biosensor for detecting contents of biochemical components in a sample, comprising an electrically insulating substrate, a working electrode disposed on said substrate, a reference electrode disposed on said substrate, which is spaced from said working electrode, a reaction layer disposed on said working electrode and said reference electrode, wherein said reaction layer and said electrodes form a reaction area for reacting with the sample, an electrically insulating layer disposed on said substrate and having an opening for receiving the sample, wherein said opening exposes a portion of said reaction area and the end of said opening is located at the edge of the biosensor; and a reticular covering layer which covers said opening and the end of said opening of said insulating layer wherein said reticular layer and said insulting layer form a sampling area from said reticular covering area to the edge of said biosensor.

Abstract: An inflator includes a hollow handgrip and an air cylinder having a shaft. One end of the shaft is connected with a piston in the cylinder and the other end of the shaft is provided with a stud extending out of the cylinder. A bottom wall and an opening are arranged respectively at opposite ends of the handgrip. A tapped hole is formed in the bottom wall for locking the stud. Through the opening, the cylinder may be stored in the handgrip to lessen the volume of the inflator. When using the inflator, a user draws the cylinder out of the handgrip and lock the stud to the tapped hole through the bottom end of the handgrip to thereby extend the shaft. Air is pumped out through an outlet of the cylinder by reciprocal axial motion of the shaft.

Abstract: The present invention relates to a liquid crystal display device, which comprises a top polarizer and a lower polarizer, a liquid crystal cell, and a back light assemble, the device is characterized in that the lower polarizer is subjected to an anti-glaring treatment while the top polarizer is not. In the liquid crystal display device (LCD) according to the present invention, since the top polarizer is not subjected to the anti-glaring treatment, the prepared device exhibits a vision property similar to that of cathode ray tube (CRT) display device without brownish nor glittering problems associated with conventional LCD in which a top polarizer is subjected to anti-glaring treatment.

Abstract: An electrochemical sensor with sample pretreatment function includes an insulating substrate, and an electrode system disposed on the substrate having at least a working electrode and a reference electrode. An electrically insulating layer partially covers the electrode system, so an exposed area of the electrode system not covered by the electrically insulting layer forms an electrochemical electrode reaction region that accommodates sample solution and an air vent. A reaction layer is disposed in the electrochemical electrode reaction region and includes at least an oxidoreductase, an electron mediator, and at least a carrier.

Abstract: A dual-direction pump includes two cylinders arranged on opposite sides of a head portion and an inlet return-flow prevention device and a leakproof device mounted between the cylinder and the head portion for avoiding leakage at the juncture between the cylinder and the head portion or leakage induced by reverse flow in one of the cylinders in the case of a single-sided pumping operation in the other cylinder. The head portion has an outlet port to which an outlet return-flow prevention device is mounted. A knob is rotatably mounted to the outlet pot and a nut is fixed to the knob for selectively engaging an inflation valve to avert detachment. The outlet return-flow prevention device prevents reverse or return flow induced in the outlet port in order to reduce resistance caused thereby and enhances pumping efficiency.

Abstract: A collapsible handle device for an inflator comprises an air cylinder having a shaft lever and a hollow grip, in which one end of the shaft lever is connected to a piston inside the air cylinder, and the other end is provided with a rotation body, which is pivotally jointed with the grip. A channel, wider than the diameter of the shaft lever, is formed in the lateral wall of the grip. The air cylinder could be inserted in the grip so as to reduce the volume of the inflator, or the air cylinder could be pulled out from the grip, then turned 180° to form a straight line with the shaft lever so that a user may hold the air cylinder with one hand and operate the shaft lever in axial direction to pump air out through an air vent at one end of the air cylinder.

Abstract: A collapsible handle device for inflator comprises an air cylinder having a shaft lever and a hollow grip, in which one end of the shaft lever is connected to a piston inside the air cylinder, and the other end is provided with a rotation body, which is pivotally jointed with the grip. A channel, wider than the diameter of the shaft lever, is formed in the lateral wall of the grip. The air cylinder could be inserted in the grip so as to reduce the volume of the inflator, or the air cylinder could be pulled out from the grip, then turned 180° to form a straight line with the shaft lever, such that a user may hold the air cylinder with his one hand and operate the shaft lever in axial direction to pump air out through an air vent at one end of the air cylinder.

Abstract: A power pump device includes a casing having a motor and a gear system is connected to an output shaft of the motor. A final gear of the gear system is mounted to an axle and a knob is rotatably and threadedly connected to the casing. A first spring is mounted to the axle and biased between the final gear and an inside of the knob. A disk is mounted to the axle and a clutch device is engaged between the final gear and the disk. A crank is connected to the axle and connected to a piston rod which reciprocatingly moves in a cylinder so as to output pressurized air. The clutch device makes the final gear to slide on the disk when a back pressure overcomes the spring biasing the final gear.

Abstract: A biosensor for detecting contents of biochemical components in a sample, comprising: an electrically insulating substrate; an anode disposed on the substrate, the anode being formed with, on both ends of the anode, a working electrode and an anode connector respectively; a cathode disposed on the substrate, the cathode being formed with, on both ends of the cathode, a reference electrode and a cathode connector respectively; a reaction layer disposed on the working electrode and the reference electrode having an area, the reaction layer being used for contacting and for reacting with the sample; an electrically insulating layer disposed on the substrate and having an opening for receiving the sample on the reaction layer and an opening end; and a reticular covering layer on the reaction layer, the reticular covering layer at least covering a part of the opening.

Abstract: An air pump has a positioning seat provided to have two mouths each with an inner thread formed on an inner face thereof and an outer thread formed on an outer face thereof and a nozzle formed to adjust to an inlet of a tire; and two pump barrels each corresponding to one of the mouths to pump the air out from the nozzle. The two mouths of the positioning seat enables the user to operate the air pump in opposite directions simultaneously.

Abstract: A bicycle air pump includes a cylinder adapted to be secured to the bicycle frame having a cylinder bore within which a piston reciprocates, a crank shaft rotatably supported on the cylinder and drivingly coupled to the piston by means of a connecting rod and a driving mechanism for coupling the crank shaft to the bicycle chain to be driven thereby so that when the bicycle pedals are actuated to drive the bicycle chain, the bicycle chain forces the crank shaft to rotate and thus making the piston reciprocate within the cylinder bore to pump air through an outlet of the cylinder.