Abstract: An ignition system for a vehicle internal combustion engine (12) has a capsule defining a pre-chamber (136), an ignition fuel supply system (500) configured to inject an ignition fuel to the pre-chamber to create an ignition fuel-air mix in the pre-chamber, an ignition surface (137) within the pre-chamber, the ignition surface being defined by an interior surface of the capsule and configured to be contacted by the ignition fuel in the pre-chamber to thereby ignite the ignition fuel by hot surface ignition, and at least one jet nozzle (152). The ignition fuel is characterised by having a carbon content by mass less than 65%, a hot surface ignition temperature less than 500 deg C., and a volumetric energy density (LHV) greater than 18 MJ/L. The at least one jet nozzle is configured such that ignition of the ignition fuel by contact with the ignition surface causes at least one of hot gases, partially combusted fuel and flames to leave the pre-chamber through the at least one jet nozzle.

Abstract: A single phase aerosol composition comprising the following constituents: (a) 5 to 75 wt % of a hydrofluorocarbon(s) (HFC) of vapor pressure greater than or equal to 4 bar at 20° C. (60 psig at 70° F.); (b) 10 to 30 wt % of a hydrocarbon propellant; (c) 1 to 70 wt % of a hydrocarbon solvent(s) with a vapor pressure of less than 0.1 mm Hg at 20° C.; (d) 0.01 to 10 wt % of an active constituent(s) selected from the group which includes fragrances, air-sanitisers, air fresheners, deodorizers, odor eliminators, malodor counteractants, insecticides, insect repellants, medicinal substances, disinfectants, aroma therapy compositions; and, (e) 0 to 25 wt % of an adjuvant constituent(s) other than (a), (b), (c) or (d). Methods of making the said composition and aerosol dispensers containing the said composition are also disclosed.

Abstract: A single phase aerosol composition comprising the following constituents: (a) 5 to 75 wt % of a hydrofluorocarbon(s) (HFC) of vapour pressure greater than or equal to 4 bar at 20° C. (60 psig at 70° F.); (b) 10 to 30 wt % of a hydrocarbon propellant; (c) 1 to 70 wt % of a hydrocarbon solvent(s) with a vapour pressure of less than 0.1 mm Hg at 20° C.; (d) 0.01 to 10 wt % of an active constituent(s) selected from the group which includes fragrances, air-sanitisers, air fresheners, deodorizers, odor eliminators, malodor counteractants, insecticides, insect repellants, medicinal substances, disinfectants, aroma therapy compositions; and, (e) 0 to 25 wt % of an adjuvant constituent(s) other than (a), (b), (c) or (d). Methods of making the said composition and aerosol dispensers containing the said composition are also disclosed.

Abstract: A single phase aerosol composition comprising the following constituents: (a) 5 to 75 wt % of a hydrofluorocarbon(s) (HFC) of vapour pressure greater than or equal to 4 bar at 20° C. (60 psig at 70° F.); (b) 10 to 30 wt % of a hydrocarbon propellant; (c) 1 to 70 wt % of a hydrocarbon solvent(s) with a vapour pressure of less than 0.1 mm Hg at 20° C.; (d) 0.01 to 10 wt % of an active constituent(s) selected from the group which includes fragrances, air-sanitisers, air fresheners, deodorizers, odor eliminators, malodor counteractants, insecticides, insect repellants, medicinal substances, disinfectants, aroma therapy compositions; and, (e) 0 to 25 wt % of an adjuvant constituent(s) other than (a), (b), (c) or (d). Methods of making the said composition and aerosol dispensers containing the said composition are also disclosed.

Abstract: A dehumidifying device for absorbing water vapour from ambient air comprising a container having an opening to permit water vapour to enter the container, the container having a water-absorbing agent disposed therein for absorbing water vapour, wherein a first portion of the water-absorbing agent is adapted to provide an indication of water absorption faster than a second portion of the water-absorbing agent following exposure of the first and second portions of water-absorbing agents to water vapour, thereby providing an early indication of the operation of the device.

Abstract: A process for the production of tablets with a cavity using a press, equipped with upper and lower punches, the lower punch comprising a ring portion being able to reciprocate, characterized in that a central member is provided within the ring portion of the lower punch, this central member being fixed in a pre-determined position beneath the upper part of the die during the process and that, at some stage before the first compression step, the ring portion of the lower punch is adjusted at a position beneath the level of the upper end of the central member.

Abstract: A process for the production of tablets with a cavity using a press, equipped with upper and lower punches, the lower punch comprising a ring portion being able to reciprocate, characterized in that a central member is provided within the ring portion of the lower punch, this central member being fixed in a pre-determined position beneath the upper part of the die during the process and that, at some stage before the first compression step, the ring portion of the lower punch is adjusted at a position beneath the level of the upper end of the central member.

Abstract: A detergent composition is provided in tablet form which contains at least one tablet. Each tablet contains a substantially complete detergent formulation for a washing application and weighs about 5 to about 700 mg.

Abstract: A detergent composition is provided in tablet form which contains at least two types of tablets having different compositions, in which at least one tablet type is manufactured by a process in which substantially no pressure is applied.