| 主权项 |
1. A spring driven reel, comprising:
a gear assembly; a reel assembly operatively coupled to at least one gear of the gear assembly; and at least one spring assembly, wherein the spring assembly includes:
a helical spring,a screw member having a first end rotatably coupled to a first end of the spring assembly and a second end operatively coupled to the at least one gear of the gear assembly, wherein the reel and the screw member rotate with respect to one another via the at least one gear, anda non-rotatable nut movably coupled to the screw member, wherein rotation of the screw member by the reel in a first direction causes lateral movement of the non-rotatable nut to compress the helical spring, wherein lateral movement of the non-rotatable nut caused by decompression of the helical spring rotates the reel in a second direction. |
