Abstract: An apparatus for emitting a chemical agent includes a housing defined by first and second co-axial housing sections received in end-to-end engagement, a heating element in the second housing section. The heat supplied to the chemical agent is varied so that the rate of vaporization can be controlled. The first housing section includes a vented base portion and a wall portion connected to the base portion so as to define a recess for receiving a volatile chemical agent. The chemical agent or a carrier therefor is secured within the recess. The second housing section includes a solid base portion and a wall portion connected to the base portion. An electric heater element is imbedded within the base portion of the second housing section so that it is electrically isolated from the base surface. The wall portions of each section are received in co-axial engagement so that the chemical agent is adjacent to the heated base.

Abstract: A device for dispensing any one of a wide range of volatile liquids as vapours, comprises a reservoir with an open end closed by a vapor-permeable, liquid-impermeable element. A flange surrounds the opening to the reservoir and the element is bondable to the flange in a multiplicity of different locations, each of which defines a respective area of the element bounded by the bond and wettable by the volatile liquid. Thus, a single device can be used to dispense any one of a wide range of volatile materials simply by determining the surface area within the bond to be wetted by the volatile liquid to give the desired rate of vapor release for the selected volatile material and bonding the element to the flange in a location to define the determined wettable area of the element.

Abstract: An applicator for applying liquids to surfaces, especially highly mobile liquids of low viscosity, the applicator comprising a cap-like body (30) in a transverse wall (50) of which is a dispensing aperture (60). An applicator pad (90) is bonded to the outside of the transverse wall and there is a diaphragm (70) on the other side of the transverse wall, covering the dispensing aperture. The diaphragm (70) has a slit (80), radially spaced from the dispensing aperture.An actuator member (100) extending through the dispensing aperture (60) rests with one end in contact with the diaphragm (70) and its other end in the applicator pad (90) so that pressure on the applicator pad (90) is transmitted via the actuator member (100) to displace the diaphragm (70) from the dispensing aperture (60) and open the slit (80).The applicator resists accidental discharge of liquid and is particularly useful for applying treatment liquids to the leather of shoe uppers to impart a shine.