Insect repellent collar
AssigneeCanada, Her Majesty the Queen in right of, as represented by the secretary of National Defence
InventorJohn Madden McAndless
Life of this patent
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Abstract
A device is disclosed for protection of a wearer's exposed skin against biting insects, and consists of a collar having a backing strip resistant to passage of liquid therethrough, an absorbent layer of open-cell solid resin foam impregnated with finely divided absorbent, and an outer porous covering. Liquid insect repellent is applied to the collar and absorbed, but then desorbs and evaporates at a slow rate to provide efficient protection when the collar is worn. Longer term protection using less chemical repellent than conventional methods is provided.
Claims7
A collar for use in protecting exposed skin of a wearer's face and neck against biting insets which comprises:
- a. a backing strip resistant to the passage of liquid therethrough having a fastening means at the ends thereof,
- b. an absorbent layer adjacent the backing strip and being formed of an open-cell solid resin foam impregnated with a finely divided particulate absorbent material capable of absorbing liquid-repellent chemical which then slowly desorbs and evaporates, the rate of evaporation being controlled by the structure of the resin foam
- c. a porous outer covering adjacent the absorbent layer and being secured to the backing strip, and
- d. N, N-diethyl-meta-toluamide insect repellent applied to the porous outer covering adjacent the absorbent layer.
Dependencies are inferred from the claim text.