Air freshener dispenser device
AssigneeS. C. Johnson & Son, Inc.
InventorsJohn Martin, Joseph M. Rosplock
Life of this patent
Estimating the term…
Abstract
This invention provides an air freshener dispenser device in the form of a semi-rigid thermoplastic strip, which has the central area of both flat surfaces covered with a coextensive laminate of an inner vapor-permeable membrane and an outer peelable vapor-impermeable membrane. The respective membrane laminates enclose the central area of the strip which has at least one aperture accessing between the two laminate films. Preferably there are multiple apertures which serves as a reservoir for a volatile air freshener ingredient. Partial or complete removal of one or both peelablevapor-impermeable membranes allows delivery of the air freshener ingredient as vapor into the environment at a controlled rate over an extended time period.
Claims9
An air freshener dispenser device comprising:
- (a) a thin semi-rigid strip with a planar periphery that frames a central section which has at least one aperture accessing coextensive flat surfact of the strip;
- (b) a thin membrane on each flat surface of the strip, which is fixed about the entire planar periphery and which covers and seals the perforated central section and forms a reservoir enclosure, and which is permeable to a volatile medium in the reservoir enclosure;
- (c) a volatile air freshener ingredient which is contained within the reservoir enclosure;
- and
- (d) a thin peelable impermeable membrane which is bonded coextensively with each respective permeable membrane to prevent volatilization of the air freshener ingredient through the permeable membrane from the reservoir enclosure.
Dependencies are inferred from the claim text.