Gas and liquid contact apparatus – Fluid distribution – Pumping
Reexamination Certificate
2006-02-07
2006-02-07
Hopkins, Robert A. (Department: 1724)
Gas and liquid contact apparatus
Fluid distribution
Pumping
C261S030000, C261S078200, C261S081000, C261SDIG065, C261SDIG088, C422S124000, C239S102100
Reexamination Certificate
active
06994328
ABSTRACT:
The present invention provides systems and methods for delivering a controlled amount of scent to a target user. Such methods and systems will preferably provide carefully direct boluses or streams of scent(s) to a single or small group of individual(s) using a bolus generator so as to avoid cross-contamination of scents with other persons and other locations. The present invention preferably delivers the bolus of scent as an air ring. The scented air ring moves through the air between the scent generating device directly to the user as a cohesive unit of air. This phenomenon is similar to a “smoke ring” exhaled by a smoker. The scent ring can be directed with accuracy to a localized target as small as the nose of a single user, such that the entire dosage can be delivered to only the user's direct vicinity. Such targeted delivery minimizes the amount of scent that must be delivered to achieve a desired level of scenting at the target location. Advantageously, the amount of scent that must be removed or dissipated from the user's area is also reduced. In another aspect, the present invention provides anti contamination devices that inhibit the contamination of the sequential delivery of scent chemicals.
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Jacobson, L., “Picking up the scent of a new web technology,”The Washington Post(Nov. 22, 1999) p. A11.
Law David
Watkins Carl J.
Hopkins Robert A.
MicroScent LLC
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