Amusement devices: games – Problem eliciting response
Patent
1981-06-19
1983-07-12
Shapiro, Paul E.
Amusement devices: games
Problem eliciting response
425383, 264145, F41B 502
Patent
active
043926541
ABSTRACT:
Arrow fletchings (42, 102) disclosed have curved vanes (50, 114) inclined inwardly in a rearward direction to provide pockets (54, 118) for restricting air flow while allowing vane flexing in a manner that moderates drag in response to wind changes. One fletching embodiment (42) is preferably made by plastic extrusion and a subsequent heat forming process and includes a vane (50) whose inner portion projects radially from its foot (44) and whose outer portion define its curved pocket (54). Another fletching embodiment (102) made from sheet plastic includes a vane (114) that projects tangentially from the arrow shaft on which its foot (104) is mounted and is curved to define the pocket (118) that restricts air flow. A fixture (68) for heat forming the pocket of the one fletching embodiment (42) and a method for making the other fletching embodiment (102) are also disclosed.
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