Abstract: A gas powered tool (70) comprising a housing (73) and a soldering tool element (72) releasably coupled to the housing (73). A latching element (105) pivotally mounted on a pivot pin (106) in the housing (73) is retained in a non-latching state (FIG. 26) by an abutment element (102) which is urgeable into the housing (73) by the soldering tool element (72) when the soldering tool element (72) is coupled to the housing (73). The latching element (105) is spring biased in the direction of the arrow E from the non-latching state to a latching state (FIG. 27) for latching a switching element (89) in a first state to in turn retain an isolating valve (86), which supplies fuel gas from a reservoir (78) in the housing (73) to the soldering tool element (72), in the isolating state. On decoupling of the soldering tool element (72) from the housing (73), the abutment element (102) is spring urged outwardly and disengages the latching element (105).

Abstract: An electrically powered heater unit includes a positive temperature coefficient disc heater element sandwiched between an electrically conductive contact element and an electrically and heat conductive heat transfer element. A housing defining a hollow interior region is located on a plate member, and a communicating opening formed in the plate member communicates with the hollow interior region. The heat transfer element is secured to the plate member by retaining member extending from the heat transfer element engaging a rim of the communicating opening, with the heating element and the contact element located within the hollow interior region of the housing. A first and second connecting elements extend from the contact element and heat transfer element, respectively, then through the housing for connecting to first and second wires of an electrical power supply for providing electrical power supply to first and second abutment surfaces of the heater element.

Abstract: A gas powered tool (70) comprising a housing (73) and a soldering tool element (72) releasably coupled to the housing (73). A latching element (105) pivotally mounted on a pivot pin (106) in the housing (73) is retained in a non-latching state (FIG. 26) by an abutment element (102) which is urgeable into the housing (73) by the soldering tool element (72) when the soldering tool element (72) is coupled to the housing (73). The latching element (105) is spring biased in the direction of the arrow E from the non-latching state to a latching state (FIG. 27) for latching a switching element (89) in a first state to in turn retain an isolating valve (86), which supplies fuel gas from a reservoir (78) in the housing (73) to the soldering tool element (72), in the isolating state. On decoupling of the soldering tool element (72) from the housing (73), the abutment element (102) is spring urged outwardly and disengages the latching element (105).

Abstract: An evaporator (1) comprises a housing (2) having a top wall (7) in which a receiving recess (14) is formed for receiving a container (15) for a liquid to be evaporated. A heat transfer element (30) having a first heat transfer abutment face (35) located in the receiving recess (14) transfers heat from an electrically powered heating element (25) to the container (15) through a second heat transfer abutment face (36) of a base (16) of the container (15). The heating element is planar and is located between the heat transfer element (30) and a locating element (40), which retains the heating element (25) tightly between the heat transfer element (30) and the locating element (40). A retaining magnet (48) located in the locating element (40) extends into a bore (52) in the heat transfer element (30) and co-operates with a complementary element (49) of magnetic material located in the base (16) of the container (15) for releasably retaining the container (15) in the receiving recess (14).

Abstract: An evaporator (1) comprises a housing (2) having a top wall (7) in which a receiving recess (14) is formed for receiving a container (15) for a liquid to be evaporated. A heat transfer element (30) having a first heat transfer abutment face (35) located in the receiving recess (14) transfers heat from an electrically powered heating element (25) to the container (15) through a second heat transfer abutment face (36) of a base (16) of the container (15). The heating element is planar and is located between the heat transfer element (30) and a locating element (40), which retains the heating element (25) tightly between the heat transfer element (30) and the locating element (40). A retaining magnet (48) located in the locating element (40) extends into a bore (52) in the heat transfer element (30) and co-operates with a complementary element (49) of magnetic material located in the base (16) of the container (15) for releasably retaining the container (15) in the receiving recess (14).

Abstract: A portable handheld vaporising device (1) comprises a housing (2) within which a vaporising chamber (7) is formed, wherein a liquid in a container (11) is vaporised to form an aerosol. A heatable element (21) having a dished abutment surface (22) is located in the vaporising chamber (7), and is heated by a gas powered heater (20) located in a main chamber (8) of the housing (2). A wick (18) extending through a port (17) of the container (11) is located spaced apart from the heatable element (21) when the container (11) is in a first state illustrated in FIG. 3. The container (11) is depressable into the housing (2) into a second state for engaging the wick (18) with the abutment surface (22) of the heatable element (21) for evaporating liquid which is wicked through the wick (18) from the container (11). A draw pipe (27) terminating in a mouthpiece (29) draws an aerosol of the vapour evaporated from the liquid for inhaling thereof.

Abstract: A disposable sachet of tobacco for use with a gas powered vaporizing device for vaporizing vaporizable constituents of the tobacco comprises a side wall of an impermeable paper based material and an upstream end cap and a downstream end cap which together define a hollow interior region for the tobacco. The sachet is shaped and sized to releasably and snugly engage a vaporizing chamber of the vaporizing device with a heat transfer member therein extending into the hollow interior region of the sachet. The upstream end cap and the downstream end cap are of a paper based permeable material which are permeable to air and an aerosol of vaporized constituents from the tobacco, respectively, to accommodate air into the hollow interior region of the sachet and the aerosol therefrom.

Abstract: A disposable sachet (1) of tobacco (2) for use with a gas powered vaporising device (5) for vaporising vaporisable constituents of the tobacco (2) comprises a side wall (45) of an impermeable paper based material and an upstream end cap (49) and a downstream end cap (53) which together define a hollow interior region (46) for the tobacco (2). The sachet (1) is shaped and sized to releasably and snugly engage a vaporising chamber (15) of the vaporising device (5) with a heat transfer member (25) therein extending into the hollow interior region (46) of the sachet (1). The upstream end cap (49) is of a paper based permeable material which is permeable to air and the downstream end cap (53) is of a similar permeable paper based material which is permeable to an aerosol formed by vaporised constituents from the tobacco (2) entrained in air drawn through the hollow interior region (46) of the sachet (1) when the sachet (1) is in the vaporising chamber (15).

Abstract: A hot melt glue gun comprising a main housing (5) having a glue stick accommodating bore (8) extending therethrough and terminating in a dispensing nozzle (9) through which melted glue is dispensed. A catalytic combustion element (16) is located in a combustion chamber (15) for raising the temperature of the main housing (5) to an appropriate temperature for melting the glue stick. Fuel gas is supplied to the catalytic combustion element (16) through a fuel gas valve (20) having a spindle (40) extending therefrom. A piezo electric ignition unit (27) generates an EMF for generating a spark across a pair of electrodes (25) in the combustion chamber (15) for igniting the fuel gas to initially burn with flame combustion to raise the temperature of the catalytic element (16) to its ignition temperature.