Energy storage device for a bow

摘要

An energy storage portion for a bow and a method of configuring the same. At least one first limb has both a distal portion and a proximal portion coupled to the first side of a center support. At least one second limb has both a distal portion and a proximal portion coupled to the second side of the center support. At least one first pulley is attached to the first limb at a location between the distal and the proximal portions of the first limb and at least one second pulley is attached to the second limb at a location between the distal and the proximal portions of the second limb.

主权项

1. An energy storage portion for a bow comprising:
a center support having a first side and a second side; at least one first limb having a distal portion pivotally coupled to the first side of the center support at a distal limb mount and a proximal portion, pivotally coupled to the first side of the center support at a proximal limb mount; at least one second limb having a distal portion pivotally coupled to the second side of the center support at a distal limb mount and a proximal portion pivotally coupled to the second side of the center support at a proximal limb mount; at least one first pulley including a first string journal and a first power cable journal pulley pivotally attached to the first limb at a fixed position located between the distal portion and the proximal portions; at least one second pulley including a second string journal and a second power cable journal pivotally attached to the second limb at a fixed position located between the distal portion and the proximal portions; a draw string extending across the center support and engaged with the first and second string journals, the draw string including a first end secured to the first pulley and, a second end secured to the second pulley; a first power cable engaged with the first power cable journal having a first end attached to the center support and a second end attached to the first pulley; a second power cable engaged with the second power cable journal having a first end attached to the center support and a second end attached to the second pulley; and couplings interposed between at least one of the distal portions or the proximal portions of the first and second limbs and the respective limb mounts that provides limb relief as the draw string is pulled to a drawn configuration.