Fluid sprinkling – spraying – and diffusing – Slow diffusers – Liquid supply in absorbent or porous media only
Patent
1980-10-02
1985-07-16
Marbert, James B.
Fluid sprinkling, spraying, and diffusing
Slow diffusers
Liquid supply in absorbent or porous media only
A61L 904
Patent
active
045291250
ABSTRACT:
An improved device for dispensing a volatile substance into the environment includes a reservoir layer, having opposing first and second surfaces, for holding the substance and first and second envelope layers respectively in close proximity to the first surface and the second surface of the reservoir layer. At least a portion of at least one envelope layer is permeable to the substance. The reservoir layer and envelope layers are fused together at a first generally circular, continuous boundary at which the reservoir layer is non-permeable to the substance to thereby define a generally circular region within which the substance is confined. The reservoir layer and envelope layers are further fused together at a second non-circular boundary completely enclosing the first boundary and the region to thereby define an outer, decorative, peripheral shape of the device. The device may also include an outer decorative layer in close proximity to at least one of the envelope layers and fused thereto at the second boundary but not at the first whereby the decorative layer has a smooth generally planar outer surface.
REFERENCES:
patent: 2626833 (1953-01-01), Valentine
patent: 2717174 (1955-09-01), Casanovas
patent: 2979268 (1961-04-01), Brun
patent: 4094119 (1978-06-01), Sullivan
patent: 4145001 (1979-03-01), Weyenberg et al.
patent: 4161283 (1979-07-01), Hyman
Marbert James B.
Risdon Enterprises, Inc.
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