Abstract: A pressure cooker which uses an elastic C-connector to fix a cover to a cooker body in airtight manner. Loosening and tightening of the C-connector are controlled by an operating handle. The operating handle has a relief valve at one end. The relief valve has a valve body and an adjustable valve rod so that when the C-connector is in tightening condition, the valve body is located on a valve seat on the cover. Pressure can be relieved through the relief valve or edge of the C-connector after it reaches a certain level. Pressure in the cooker will raise two safety pins to restrict movement of a rod so that removal of the valve body from the valve seat is impossible and thus removal of the cover is prevented for safe operation.

Abstract: An automatic shut-off device for a fuel dispenser giving a set quantity of fuel into a tank or the like. The device can release a handle member by means of the returning force of a spring so as to shut off a valve in the fuel pipe.

Abstract: The specification relates to an automatic frying machine, including a feeder device to place materials automatically into a pan, a frying and stirring device and a mechanism to turn the pan through 180.degree. for the purpose of serving the prepared food. The machine does pan washing with a stirrer and water injectors which automatically inject water. The device can be operated in a single process with the operations including material feeding, frying, serving and pan washing.

Abstract: A perpetual calendar, particularly a perpetual calendar that can be electrically operated to show the date, the week-day, and the month. The calendar comprises a round wheel or case driven by a gear to rotate one cycle per 24 hours, and the peripheral edge of the round case has a cam for contacting a micro-switch which can trigger a circuit to drive a motor for rotating an eccentric wheel. A retractable rod can be driven by a pin on the eccentric wheel and move downwards to pull the date pulling rod and the week-day pulling rod downwards, and then a ratchet wheel will be driven to rotate, and a positioning piece in the notch of the ratchet wheel will cause the loose-leaves showing date and week-day to advance.

Abstract: It is a portable and simple barbecue spit device, particularly, a barbecue spit for outdoor barbecue activities. The spit device mainly comprises two supporting rods to be driven into ground, a rotary spit mounted on the top ends of the two supporting rods; the rotary spit has a hand crank and a U-shaped member welded on the vertical position of the rotary spit so as to form a left and right hooks, two opposite forks mounted around the rotary spit. Before the barbecue spit structure being carried, two protective sleeves should be put on the front tips of the two forks respectively to form a carrying handle; simultaneously, the bottom end of the rotary spit and the front ends of two supporting rods are put in same length so as to have the two supporting rods mounted into the left and right hooks respectively; then, a sleeve is mounted over the front ends of the two supporting rods and the rotary spit bundled together for carrying convenience.

Abstract: The bulb seat structure serves to replace the conventional bulb seat in a string of bulbs. In assembling operation, the two conductive rods of the bulb are inserted into the grooves of the bulb seat, and two wires are twisted into a spiral wire to connect all bulbs in parallel to form a string of bulbs.

Abstract: It is a water faucet, which mainly comprises a control rod, a valve stem, and a clutch assembly being mounted between the control rod and the valve stem. The clutch assembly can only be driven by the control rod to rotate an angle of 90.degree.. After the control rod rotating clockwise at a given angle, a timer will drive it counter-clockwise slowly toward original position thereof so as to supply water during a given period of time. The inlet end of the water pipe is connected with a plug-in pipe, of which the tail end is furnished with several water holes. The plug-in pipe is to be inserted into a plug valve seat in the water pipe so as to open a spring type of automatic plug valve, and to let water enter into the faucet.

Abstract: A blanket covers a light-sensing device that is attached to a portion of a sleeping person which is to be protected against cold. A weak light source is furnished. The light-sensing device is electrically connected with an alarm by means of an extension cable, if necessary. Upon the blanket being kicked off, the light-sensing device will be exposed to the weak light source to generate a signal which is passed to a current amplifier for amplification and activation of the alarm.