Other

University of Southampton

Reckitt Benckiser (uk) Limited

National Research Development Corporation

S. C. Johnson Son, Inc.

Reckitt Benckiser Inc.

Reckitt & Colman Products Limited

John Farrell Hughes

Rodney Thomas Fox

Neale Mark Harrison

Lindsey Faye Whitmore

Malcolm Tom McKechnie

Duncan Roger Harper

Jennifer Jane Knapp

John M Roberts

Malcolm Tom Mckechnie

Philip Edwin Howse

John A Marchant

Graham Leslie Hearn

Karen Louise Baxter

Karen Louise Jerrim

Paul Terence Gaynor

Jonathan Swingler

A powder charging and delivery device which comprises a receptacle having a neck portion, the receptacle containing particles of a material which can be electrostatically charged and the receptacle having a reticulated, open pore, foam material disposed within the neck thereof, whereby as the particles are dispensed from the container they travel through the pores of the reticulated foam material and thereby become electrostatically charged.

Method of charging and distributing particles

A method is provided for deactivating a Der-p and/or Der-f allergen which comprises volatilizing into a space to be treated a deactivating amount of a volatile oil selected from cajeput oil (tea tree oil) or an oil comprising one or more terpene hydrocarbons.

Method of deactivating dust mite allergens

An apparatus and method for dispersing a volatile composition, which method comprises dispersing the volatile composition into an air steam; and generating an ion wind, thereby causing the molecules of the composition to become electrically charged. The composition can be an insect repellent, an insecticide, an anti-microbial, an anti-allergenic or a room-fragrancing composition

Method and apparatus for dispersing a volatile composition

A method for controlling and removing dust and other fine particles in a material comprising i) electrostatically charging carrier particles in powder form to give the carrier particles a minimum charge to mass ratio of &plus;/&minus;1&times;10 C/kg, ii) delivering the electrostatical charged carrier particles to the material, whereby the dust and other fine particles in the material agglomerate with the charged carrier particles and iii) removing the resultant agglomerates from the material (for example by vacuuming or brushing). An apparatus for delivering electrostatically charged particles to a material, the apparatus comprising a) a container, in which particles to be electrostatically charged are stoned and b) means for delivering the particles from the container to the carpet of fabric material, the delivery means comprising i) a tube or pipe for delivering the carrier particles to the carpet or fine fabric material; and ii) means for expelling particles at high velocity from the container to the material; the tube or pipe being made of such a material that, when carrier particles are passed down the de tube at high velocity, a minimum charge to mass ratio of &plus;/&minus;1&times;10 C/kg is imparted to the particles by the frictional contact of the particles on the inside of the tube or pipe.

Method for controlling and removing dust and other particles from a material

An apparatus and method for dispersing a volatile composition, which comprises dispersing the composition into an air stream and generating an ion wind, thereby causing the molecules of the composition to become electrically charged. The composition can be an insect repellent, an insecticide, an anti-microbial, an anti-allergenic or a room-fragrancing composition.

A method of improving the spraying of liquid droplets from a spray device onto a surface which method comprises imparting a unipolar charge to the said liquid droplets by double layer charging during the spraying of the liquid droplets from the spray device, the unipolar charge being at a level such that the said droplets have a charge to mass ratio of at least &plusmn;1&times;10 C/kg, whereby the charged droplets of the liquid are mutually repelled thereby increasing the spread of the droplets from a central spray line extending from the head of the spray device and avoiding coalescence of the droplets, thus providing a more even coverage of the surface which is to be sprayed. In particular, the method enables liquid droplets to be sprayed onto a surface which is obscured by all object located between the surface and the spray device.

Aerosol spraying

An improved method of counteracting or neutralizing airborne malodour comprising directing at the source of the malodour liquid droplets from a spray device containing a malodour counteracting composition, the improved method comprising imparting a unipolar charge to the said liquid droplets by double layer charging during the spraying of the liquid droplets by the spray device, the unipolar charge being at a level such that the said droplets have a charge to mass ratio of at least &plusmn;1&times;10 C/kg.

Malodour counteracting treatment

An improved method of denaturing or deactivating an airborne allergen comprising directing at the airborne source of the allergen liquid droplets from a spray device containing a liquid composition which includes an allergen denaturant or allergen deactivant, the improved method comprising imparting a unipolar charge to the said liquid droplets by double layer charging during the spraying of the liquid droplets by the spray device, the unipolar charge being at a level such that the said droplets have a charge to mass ratio of at leaset &plusmn;1&times;10 C/kg.

Treatment of airborne allergens

A method of reducing the droplet sizes of a composition sprayed from an aerosol spray device comprising a compressed gas propellant, which method comprises imparting a unipolar charge to the liquid droplets by double layer charging during the spraying of the liquid droplets from the aerosol spray device, the unipolar charge being at a level such that the said droplets have a charge to mass ratio of at least &plus;/&minus;1&times;10,C/kg.

Compressed gas propelled aerosol devices

A method of killing flying insects which method comprises spraying into the air in which insects are flying liquid droplets of an insecticidal composition, a unipolar charge being imparted to the said liquid droplets by double layer charging and charge separation during spraying, the unipolar charge being at a level such that the said droplets have a charge to mass ratio of at least &plus;/&minus;1&times;10,C/kg. An aerosol spray device which is capable of imparting a unipolar charge by double layer charging and charge separation to liquid droplets of a composition sprayed therefrom has a spraying head in the form of an insert in an actuator, the spraying head having a bore through which liquid is expelled having an outlet, preferably with a tortuous periphery, having an L/a ratio of at least 8 (preferably at least 10) where L is the length of the periphery defining the bore outlet in mm and a is the cross-sectional area of the bore outlet in mm,and the apparatus being constructed such that the droplets are expelled from the spraying head at a flow ratio of at least 0.4 (preferably at least 0.5) grams per second and have a charge to mass ratio of at least &plus;/&minus;1&times;10,C/kg.

Targeting of flying insects with insecticides and apparatus for charging liquids

An insect trap device comprising a housing, the housing having an interior which is in communication with the atmosphere outside the device, the housing containing:

Insect trap device

Process for the preparation of electrostatically charged particles

A spraying apparatus to deliver inductively charged spray, for example to crops. The apparatus includes a spray head and electrodes to apply a potential difference in the region of the spray head to charge spray. An aspirating means is arranged to remove liquid deposited on an electrode to reduce interference with the charging process. When the spray liquid is to be at high potential in the apparatus a long high resistivity supply tube may be provided. The aspirating means may be operated by spray liquid bled from a pressurized supply spray liquid.

Inductively charged spraying apparatus

An emulsion of a disperse phase liquid in a continuous phase liquid is produced by atomizing the disperse phase liquid electrostatically and entraining the atomized droplets in a moving layer of continuous phase liquid. To produce a spray with atomized droplets of small and uniform size a disperse phase liquid, such as wax in a solvent, is directed to flow over the sharp edge of a blade maintained at a high voltage with respect to the conductive surface of the drum. The drum is rotated so that the surface is wetted by a reservoir of continuous phase liquid and so that the surface layer of liquid intercepts the spray of droplets at a uniform rate to produce an emulsion of consistent concentration. The concentration is controlled by setting the rates of flow and the number of cycles of interception.

Apparatus for producing emulsions

The danger of fire from leaking aerosol containers is reduced by reducing the charge potential on leaking containers. This is achieved by a filling method in which an effective amount, for example 0.1 to 5% by weight of a charge reducing agent and a non-aqueous product intermediate are mixed, the mixture is filled into the container and the container is then pressurized with a flammable propellant.

Growing community of inventors

Southampton, United Kingdom

John Farrell Hughes