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US 5,958,585 AGranted
Apparatus and method for determining the direction of ambient airflow
OwnerPaul H. Meeksinventor
Life of this patent
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Abstract
An apparatus for determining the direction of ambient airflow and a method for the use thereof. The apparatus includes man-made or natural fibers that float when released into the air by a user. The direction of ambient airflow is determined by observing the direction of movement of the fibers from the point of release from the user's hand.
Claims9
An airflow direction indicator comprising:
- a container which can be held by hand;
- and
- a plurality of loose fibrous members disposed within said container, said fibrous members comprising at least one of a dye and a scent applied to said fibrous members and having a high surface area to mass ratio, each of said fibrous members comprising a plurality of elongated stalks made of materials selected from the group consisting of natural and man-made fibers;
- wherein said fibrous members can float along and trace updrafts and downdrafts in ambient air for a period of time sufficient to indicate said direction of ambient airflow.
1 more element
A method for determining the direction of ambient airflow comprising the steps of:
- (a) selecting by hand a plurality of loose fibrous members from a container containing said loose fibrous members, said loose fibrous members being selected from the group consisting of natural and man-made fibers having a high surface area to mass ratio and said fibrous members comprising at least one of a scent and a dye applied to said fibrous members;
- (b) releasing by hand said plurality of fibrous members at a first position in ambient air such that said fibrous members can float and trace updrafts and downdrafts in said ambient air;
- and
- (c) observing movement of said plurality of fibrous members for a long enough period of time for said fibrous members to move from said first position to a second position in said ambient air;
- whereby said movement of said plurality of fibrous members from said first position to said second position indicates the direction of ambient airflow.
2 more elements
Dependencies are inferred from the claim text.