Fluid sprinkling – spraying – and diffusing – Slow diffusers – Liquid supply in absorbent or porous media only
Patent
1995-01-11
1996-06-25
Weldon, Kevin P.
Fluid sprinkling, spraying, and diffusing
Slow diffusers
Liquid supply in absorbent or porous media only
239 57, A61L 904
Patent
active
055292437
ABSTRACT:
A scent dispensing device comprising a scent impregnated pad of which the side edges are supportingly engaged by the inner side surfaces of a perforated hollow tubular body within which the pad is enclosed. The tubular body is expandable between: (1) a flat-folded, collapsed condition in which a pair of opposing tube wall panels with spaced apart apertures are joined together along their opposite side edges and (2) a dilated condition in which the opposing wall panels bow outwardly of each other creating a tubular body of lenticular cross section of lesser dimension between the wall panel joined side edges than in the flat-folded, collapsed condition. Convex contoured end closure flap members connected to extend across the width of each opposing wall panel at their ends are displaceable inwardly of the opposing wall panels to close the tubular body and establish the dilated condition. The width of the impregnated pad is substantially that of the lenticular lesser cross sectional dimension. Expansion of the flat-folded, collapsed tubular body into the dilated condition with an impregnated pad positioned between opposing wall panels brings the inner portions of the joined wall panel side edges into supporting relationship with the side edges of the impregnated pad.
REFERENCES:
patent: 2720419 (1955-10-01), Eby
patent: 2757957 (1956-08-01), Samann
patent: 3366312 (1968-01-01), Lowenberg et al.
patent: 3815828 (1974-06-01), Engel
patent: 4208012 (1980-06-01), Dutcher
patent: 4280649 (1981-07-01), Montealegre
patent: 4283011 (1981-08-01), Spector
patent: 4848929 (1989-07-01), Rawl
Buckner Wesley M.
Hoyt Earl
Hanger Willard M.
Product Innovation Resource, Inc.
Weldon Kevin P.
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