发明授权
US09022369B2 Reverse coil head coils and innersprings 有权
反向线圈头线圈和内部弹簧

Reverse coil head coils and innersprings
摘要:
A reverse coil head coil and innerspring has a generally cylindrical and helical wire form coil body and opposing coil ends which terminate on opposite sides of a reference plane that passes through the coil body. The reverse coil head coils are interconnected in a matrix to form an innerspring wherein only one terminal end of each coil is located at a perimeter of the innerspring. Variations in the number and pitch of helical turns of the coil body are also disclosed.
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