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US 4,781,647 AGranted
Toy doll construction with phosphorescent hair fibers
AssigneeHasbro, Inc.
InventorLinwood E. Doane, Jr.
Life of this patent
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AssigneeHasbro, Inc.
InventorLinwood E. Doane, Jr.
Estimating the term…
A synthetic phosphorescent fiber having a sectional dimension of less than approximately 0.015 in. and a method of manufacturing the fiber. The fiber comprises a body portion made of a flexible and durable polymeric material which is at least partially translucent and a plurality of phosphorescent particles in the body portion. The particles have a miximum particle size which is less than one half of the sectional dimension of the fibers and between approximately 0.0075 in. and 0.0005 in. and they have a mean particle size which is greater than approximately 0.0025 in. The fibers are manufactured in accordance with the method by mixing appropriately sized phosphorescent particles with a coupling agent, mixing the particles and the coupling agent with a suitable polymer and extruding the resultant mixture to form fibers. The fibers can be effectively utilized for artificial hair for toy dolls as well as for various other applications.
In a doll construction of a type including a doll body having a head and a plurality of flexible stranded artificial hair fibers on said head, the improvement comprising at least a portion of said hair fibers being phosphorescent and being extruded from a material comprising a flexible polymeric material which is at least partially translucent and a plurality of phosphorescent particles in said polymeric material, said translucent hair fibers having cross sectional dimensions of less than approximately 0.015 in., said phosphorescent particles having a maximum particle size which is between 0.0075 in. and 0.0005 in. and which is less than one half of said cross sectional dimension.
Dependencies are inferred from the claim text.