Abstract: A cylinder valve insert is used to be mounted within the outlet of a cylinder valve of a cylinder to allow a fluid to pass through the valve when a male fitting is sufficiently engaged with the outlet, and to prevent such fluid flow when the male fitting is separated therefrom. The valve insert includes a body member adapted to be mounted in the outlet; a docking member which is mounted in the body member, has a tapered portion facing away from the normal flow direction of the fluid; a valve member which has a part mounted in the body member and the docking member and movable relative thereto, defines a fluid passage communicating with an open end of the outlet; a sealing member which is mounted surrounding the valve member, is adapted to control such fluid flow from the cylinder to enter into the fluid passage; and a spring which is located between an inner end face of the outlet and the valve member, is adapted to exert a pushing force to push the valve member toward the body member.

Abstract: A gas burner has a domed head for shielding a plurality of gas outlets which are provided along the periphery of the gas burner. The gas outlets extend outward to perform the burning function. A flange extends outward along a periphery of the domed head and a skirt extends downward from and along a periphery of the flange. The bottom of the skirt is preferably 2 mm high above the gas outlets in order not to interfere with the flow of the gas.

Abstract: A refill-prevention valve has a housing. The housing has a first tubular section defining a first passage, a second tubular section axially projecting from the first tubular section and defining a second passage being in fluid communication with the first passage, a third tubular section transversely projecting from the second tubular section and defining a third passage being in fluid communication with the second passage, and an annular flange which is formed on an internal surface of the housing between the first and second tubular sections and which defines an aperture. An annular plug is received in the aperture defined in the annular flange. A sleeve defines an aperture, an open end being disposed on the annular plug, a closed end and a disk formed on the closed end. A plunger is slidably received in the second passage for pushing the sleeve into the aperture defined in the annular flange and for pushing the annular plug out of the aperture defined in the annular flange.

Abstract: A gas range includes a burner, a burner control unit, a piezoelectric igniter and a safety valve. The safety valve is situated between a gas supply and the burner. A thermocouple is situated near the burner. The piezoelectric igniter is used to ignite gas which vents out of the burner. As a flame occurs at the burner, a temperature at the burner will ascend. The thermocouple detects the increased temperature and generates a current to open the safety valve. If the flame goes out, the temperature will descend to the predetermined value. The thermocouple detects the decreased temperature and stops generating any current to actuate the safety valve. Thus, the safety valve is closed so as to keep any gas from venting out of the burner.

Abstract: A cart for barbecue grills. The cart has a shelf, a table, two first legs and two second legs. The shelf has two parallel beams for carrying a barbecue grill. The beams each have a first end, a second end and a curved slot formed therein near the second end thereof. A pivot joins together the first ends of the supports. A bar joins together the second ends of the supports. The table has two supports pivotally attached to the beams and a number of slats transversely attached on the supports. The first legs each have a first end, a second end and a linking point sited between the first and second ends thereof. The first ends of the first legs are pivotally attached to the first ends of the supports by the pivot. The second ends of the first legs are joined together by a handle. The second legs each have a first end, a second end and a linking point sited between the first and second ends thereof. The first legs are pivotally linked to the second legs at the linking points thereof.

Abstract: A retractable barbecue grill trolley has a first plate and a second plate pivotally linked thereto to form a foldable base plate and four legs pivotally attached to the base plate. Each leg has an upper and a lower post connected by a leaf spring deposited in the lower post. Each upper post has an fixing mechanism to be fixed by a pivotal supporting beam having a plurality of threading holes.

Abstract: An assembly for a variable position gas barbecue burner includes a burner and a prop assembly. The burner is positioned over the prop assembly such that it is raisable and lowerable with respect to the prop assembly as well as slidable across the prop assembly.

Abstract: An adjustable mixing pipe for a gas-range including a flexible outer pipe, a first inner pipe and a second inner pipe. The flexible outer pipe has a first end communicated to a burner and is fastened to a frame of the burner. The flexible outer pipe further has a straight portion at a second end thereof with a first slot formed on a periphery of the straight portion. The first inner pipe is retractably received within the second end of the outer pipe and is fastened in the outer pipe by means of a first fastening spring provided in the first slot. The first inner pipe is slidable lengthwise in the outer pipe when the first fastening spring is pressed to be loosened. A second slot is formed on a periphery of the first inner pipe at a second end thereof. The second inner pipe is retractably received within the second end of the first inner pipe and is fastened in the first inner pipe by means of a second fastening spring provided in the second slot.

Abstract: An automatic electronic ignition system comprising a D.C. source, an oscillatory circuit, a charging circuit and a sparking device. The D.C. source activates the oscillatory circuit. By means of a first transformer, this oscillation induces a current signal in the charging circuit with a potential higher than that of the original oscillatory signal. Due to the arrangement of the capacitors and coils within the charging circuit, an oscillatory discharge forms within the charging circuit. This oscillatory discharge further induces an even higher potential between the two electrodes of the sparking device by means of a second transformer. This causes sparking between the two electrodes and ignites the gas from the gas nozzles. The ignited gas ionizes the air molecules between the electrodes, thus turning off the oscillatory circuit. If, for some reason, the fire goes out, then the oscillatory circuit is turned on automatically, thereby re-igniting the gas from the gas nozzles.