Apparatus and method for determining the direction of ambient airflow

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.

BACKGROUND OF THE INVENTION 
1. Field of the Invention 
The present invention relates to apparatus and a method for determining the 
direction of ambient airflow. More specifically, the present invention 
comprises man-made or natural fibers that are released into the ambient 
air by a user. The direction of ambient airflow is determined by observing 
the movement of the fibers from the point of release into the ambient air. 
2. Description of Related Art 
In various sporting and outdoor activities it is important to know the 
direction of ambient airflow. For instance, hunters need to know the 
direction of ambient airflow so as to be positioned downwind from the 
intended prey. This is very important when hunting so that the prey will 
not be alerted to the presence of the hunter by the hunter's scent. 
Archers and target shooters need to know the direction of ambient airflow 
so as to judge what effect the wind will have on the flight of an arrow 
and bullet, respectively. Golfers also need to know the direction of 
ambient airflow so as to judge what effect the wind will have on the 
flight of a golf ball. Field goal kickers and soccer players also need to 
know the direction of ambient airflow to gauge what effect the wind will 
have on the flight of a football or soccer ball. 
One commonly used technique for determining the direction of ambient 
airflow is to wet one's index finger and hold it in the air to see which 
side of the finger dries first. According to this technique, the wind is 
determined to be blowing from the side of the finger that dries first. 
This is a very inexact and often inaccurate method for determining the 
direction of ambient airflow. 
A common technique used by hunters is to tie a thread to a gun or a bow and 
observe the direction in which the thread is blown by the ambient air. 
This too is an inexact and inaccurate method for determining the direction 
of ambient airflow since the airflow immediately adjacent the hunter is 
often misleading compared to a larger area surrounding the hunter. 
Another problem faced by hunters trying to mask their scent from the 
intended prey is that trees and terrain changes, including hills, low 
spots and creek beds, all have a tremendous effect on air current drafts. 
Accordingly, other techniques used by hunters to determine the direction of 
ambient airflow include the release of a powder into the air or the use of 
a smoking device. These techniques are undesirable because one can see the 
powder only for a very short period of time before it disperses and 
effectively disappears and smoking devices necessarily release an 
undesirable scent along with the smoke. 
Outside of the above-noted techniques there is no other way to track 
airflow visually. As discussed above, it is important that a hunter knows 
the direction the wind is coming from and where it goes once it passes by 
the hunter. The wind does not travel in straight lines, indeed, wind 
currents move upward and downward, swirl and change directions. Without 
knowledge of such wind patterns, the hunter is handicapped in treestand 
placement, in knowing how high to hunt, in timing shots and especially in 
predicting movement of prey such as deer. A need exists, therefore, for 
apparatus and a method that can be used to determine the direction of 
ambient airflow so that a hunter can place himself or herself in a given 
area for the best hunting advantage. 
SUMMARY OF THE INVENTION 
The ambient airflow indicator of the present invention overcomes the 
above-mentioned disadvantages and drawbacks which are characteristic of 
the related art. In a preferred embodiment of the present invention, the 
ambient airflow indicator comprises a man-made or natural fiber. The 
ambient airflow indicator is utilized by releasing a hand-full of the 
fibers into the air. The observed direction of movement of the fibers from 
the point of release indicates the direction of ambient airflow. 
Numerous objects, features and advantages of the present invention will be 
readily apparent to those of ordinary skill in the art upon a reading of 
the following detailed description of presently preferred, but nonetheless 
illustrative, embodiments of the present invention when taken in 
conjunction with the accompanying drawing.

DESCRIPTION OF THE PREFERRED EMBODIMENTS 
Referring now to the drawing, a preferred embodiment of the ambient airflow 
indicator of the present invention is shown and generally designated by 
the reference numeral 10. 
As shown in the FIGURE, the ambient airflow indicator 10 preferably 
includes a plurality of fibrous members 12. Each individual fibrous member 
12, preferably, comprises a plurality of elongated stalks 14. The fibrous 
members 12 preferably have a very high surface area and a very low mass so 
that the fibrous members 12 have a high surface area to mass ratio and, 
preferably, are feather-light. 
In this manner, upon release from the hand 16 of a user 18, the ambient 
airflow indicator 10 will appear to float in the air and will remain in 
the air for a long enough period of time for the user 18 to observe the 
direction of movement of the ambient airflow indicator 10. The direction 
of movement of the ambient airflow indicator 10 with respect to the point 
of release from the hand 16 of the user 18 indicates the direction of 
ambient airflow. The fibrous members 12 of the ambient airflow indicator 
10 float along with wind currents--following every updraft or 
downdraft--accurately tracing the wind's path. By releasing two or three 
of the fibrous members 12 the user 18 can establish an invisible line of 
where the user 18's scent is being carried. 
The fibrous members 12 used in the ambient airflow indicator 10 of the 
present invention may be made of any suitable man-made or natural material 
well known to those of ordinary skill in the art that has a high surface 
area to mass ratio. 
According to a preferred embodiment of the present invention, the fibrous 
members 12 comprise milkweed fibers. 
According to another preferred embodiment of the present invention, the 
fibrous members 12 are dyed for high visibility. Preferably, the fibrous 
members 12 are dyed white, orange, pink or fluorescent colors or any other 
color that will provide high visibility to the fibrous members 12. 
According to yet another embodiment of the present invention, the fibrous 
members 12 are infused with a deer scent, a deer attractant or a scent to 
cover-up the scent of a human. The apparatus according to this embodiment 
is especially preferred for deer hunting applications. Those of ordinary 
skill in the art will recognize that the scent of other types of prey or 
attractants for other types of prey can be infused in the apparatus of the 
present invention for applications involving the hunting of such other 
types of prey. 
In operation of the ambient airflow indicator 10 of the present invention, 
the user 18 selects a hand-full of the fibrous members 12 and releases the 
fibrous members 12 into the air. The direction of movement of the fibrous 
members 12 with respect to the point of release indicates the direction of 
ambient airflow. Once the ambient airflow direction is determined, a 
hunter can take a position that is downwind from the prey, an archer can 
adjust the aim of an arrow to compensate for the effect the wind will have 
on the flight of an arrow, a target shooter can adjust the aim of a gun to 
compensate for the effect the wind will have on the flight of a bullet, a 
golfer can adjust the swing of a golf club to compensate for the effect 
the wind will have on the flight of a golf ball, a field goal kicker or 
soccer player can adjust the direction of his or her kick to compensate 
for the effect the wind will have on the flight of a football or soccer 
ball and the participants in any other type of sporting activity can 
adjust their behavior to compensate for the effect the wind will have on 
their activity. 
While preferred embodiments of the invention have been shown and described, 
it will be understood by persons of ordinary skill in the art that various 
changes and modifications may be made without departing from the spirit 
and scope of the invention which is defined by the following claims.