Abstract: A decompression device for a four-stroke engine, which drives the inlet valve and the exhaust valve by using the profile surface of a cam and rocker mechanism. This cam includes a guiding recess provided on the side surface thereof and a slot provided on the cam profile surface communicating with the guiding recess. The decompression device further includes a centrifugal member, received within the guiding recess, having a projecting portion and being rotatable and movable within the guiding recess, and a spring having two ends fixed to the cam and the centrifugal member.

Abstract: An improved lubricating device for a four-stroke engine which permits the engine to operate upside down for a longer time and which has a better lubricating effect. This device comprises a first partitioning portion dividing the lubricating oil reservoir into a first and a second chambers, and a second partitioning portion further dividing the second chamber into a first and a second sub-chambers. The first partitioning portion includes a concave portion, having an opening for communicating the first chamber with the second chamber, which is adapted to receive some lubricating oil. Also, the first partitioning portion is provided thereon with a check valve which allows irreversible flow of the lubricating oil mist between the first chamber and the second sub-chamber.

Abstract: A catalytic converter with a heating member for use in a motorcycle. It includes (a) a catalytic member installed in an exhaust pipe of a motorcycle for converting exhaust toxic gases to nontoxic gases; (b) a liquid petroleum gas heating member including an air mixer, a liquid petroleum gas tank which is connected to the air mixer, a solenoid valve which is connected between the liquid petroleum gas tank and the air mixer for controlling a flow rate of a liquid petroleum gas into the air mixer, and a nozzle which is located at one end of the catalytic member and is connected to the air mixer; (c) a control unit connected to the solenoid valve and an ignition member located in the nozzle, for controlling the solenoid valve and for igniting a mixture of the air and the liquid petroleum gas at the nozzle to heat the catalytic member when a sensor senses an initial cold starting temperature in the catalytic member below a light-off temperature; and (d) a battery wiring to the control unit.

Abstract: An engine air intake system comprises a main air duct and at least one bypass air duct, which are located side by side. The bypass air duct is smaller in cross-sectional area than the main air duct which is provided with a throttle contiguous to the bypass air duct having therein a control valve. The throttle and the control valve are regulated by a link mechanism such that the throttle is closed when the engine is operating at a low or intermediate load rate, and that the control valve is opened partially when the throttle remains closed, thereby resulting in an acceleration of air current flowing through the bypass air duct and an improvement in the tumble or swirl ratio. As the engine is operating at a progressively increasing load rate, the throttle is caused to open gradually to bring about an increase in the engine air intake volume so as to enable the engine to operate under the optimum condition.

Abstract: A twin-bottle nursing bottle includes an outer bottle having a mouth at the top; an outer cap fastened to the mouth of the outer bottle through a screw joint to hold a nipple; an inner bottle disposed inside the outer bottle; a cup-like inner cap supported above the mouth of the outer bottle to hold the inner bottle inside the outer bottle; and a diversion control switch received within the outer cap between the nipple and the cup-like inner cap and turned to let a first fluid in the outer bottle or a second fluid in the inner bottle flow into the nipple for suction by the baby or to let both the first and second fluids flow into the nipple simultaneously.

Abstract: A toilet seat lifting device comprised of a box fastened to the toilet bowl of a toilet at the top near the back, two sliding racks made to slide in two bevel guide channels on the bottom of the box at two opposite sides, a transmission assembly driven by a slow speed motor to move the sliding racks up and down along the guide channels, and a toilet seat covered on a toilet bowl and having a rear end pivotably connected between the sliding racks, whereby the toilet seat is lifted and lowered between a horizontal position and a bevel position to help the user sit on the toilet seat or stand up from the toilet seat as the slow speed motor is controlled to move the sliding racks forward and backward alternatively.

Abstract: An electromagnetic diaphragm-type valve has a leakage preventing convex ring and is particularly applicable to air-aided fuel injection system. The valve includes an external housing made of a magnetic-inductive material, an electromagnetic coil set installed inside the rear part of external housing, a magnetic-inductive stator fitted to the central holding site of electromagnetic coil set, and a valve stem installed in the front part of external housing. The valve stem circumference is integrated with a deflectable rubber diaphragm so as not only to enable the valve stem to move a minor distance but also to enable the valve stem to be located in a right or left position. In addition, the diaphragm isolates an air chamber from parts defining the ranges of guidance and lift of valve stem, hence the motion of valve stem is not affected by entrance of pollutants. The diaphragm is formed to seal in compresed air in the air chamber.

Abstract: The present invention relates to a fuel injection system driven by compressor. The system is used in two-stroke gasoline engine, wherein high speed air flow is applied to assist in fuel atomization and injection. The system works in such a manner that a fuel pump and fuel pressure regulating valve establish stable fuel injection pressure and fuel is injected under this stable pressure by a main fuel injector and a sub-fuel injector. The fuel is not directly injected into the cylinder, but blown into main combustion chamber of the cylinder and pre-combustion chamber of a torch-forming plug by little amount of high speed air flow supplied from a small compressor synchroinzed with the engine in operation, the high speed air flow being distributed by a distributor to flow into air passages of the main fuel injector and sub-fuel injector for blowing the injected fuel.

Abstract: A solenoid-operated injector for an electronically controlled fuel oil injection system which serves to control fuel oil injection by means of a shift of a ball valve unit. The ball valve unit includes a flat armature and a ball valve, the flat armature is shifted, floatingly, without any guidance. As the ball valve unit is sucked and moved to an open state, the flat armature abuts against a thin plate having a high magnetic resistance. The top of the flat armature is acted upon by a compressed spring with the top end of the compressed spring abutting against a spring regulating tube, so that the spring force acting on the flat armature can be changed by adjusting the spring regulating tube. Both the compressed spring and ball valve are located in the magnetic stator of the solenoid coil with the flat armature and the ball valve being located such that the spring force normally biases the ball valve against the oblique cone concave on the top of the valve seat.

Abstract: A low pressure fuel injection system, especially suitable to be applied to a two-stroke gasoline engine, mainly comprises a solenoid-operated fuel injector which is mounted on cylinder wall in order to inject fuel directly into cylinder. The injector has a specially-designed injection valve assembly including a valve needle and a valve body that could execute in-cylinder injection under low fuel pressure, eg. 3 kg/cm.sup.2, without causing any problem accompanied with.

Abstract: A dynamic particulate observation apparatus for monitoring a moving particle comprises a black box having an internal space enclosed therewithin, which shields said space from the infiltration of light outside; means for generating particles moving across said black box; means for emitting flash light within said black box at a predetermined frequency; and means for taking down the images of the particles generated by said generating means when said emitting means emits flashlights. The dynamic particulate observation apparatus according to this invention is cheap and easy to assemble, and renders all the necessary functions of a conventional dynamic particulate observation apparatus.

Abstract: An electromagnetic permeable-shell-free diaphragm valve comprising a shell, a coil, a stator, a magnetic flux permeable block, a spring seat, an adjusting block, a valve stem, a diaphragm, a coil spring, and a valve seat. The diaphragm of the valve isolates the slide portion of the stem from the liquid, so that the reciprocating motions of the valve stem will not be impeded when the liquid is dehydrated. Furthermore, it is not necessary to install a permeable shell, so that the manufacturing cost is lower than that of the conventional valve, and the efficiency of the heat dissipation will be improved, particularly at high-frequency operation, since the coil is directly disposed outside the shell of the valve.

Abstract: An automatic ink jet marking system composed of a nozzle set, an ink supply device and a micro-computer control device which uses a fixed nozzle set to mark a moving object, particularly a system which uses micro-computer to edit, save and retrieve data and to give control signal in reponse to movement of object as detected by a position sensor and a speed sensor to drive a solenoid valve module and consequentially the nozzle module to spray ink for marking via a driver.