Abstract: The strap spool is mountable to drive shafts in various strap winding apparatus, such as winches and torsion spring counterbalances. The strap spool has a two piece design where two symmetrical spool halves slidably mate to form a drum around which the strap is wound. Each spool half has a central hub with an axial opening, which allows the spool halves to mount onto a drive shaft. An annular flange extending radially around the hub and a barrel sleeve extends from the hub perpendicular to the flange. When spool halves are mated together on a drive shaft, the barrel sleeves slidably extend into axial openings in the hub of the opposite spool half and form a tubular drum overlying the drive shaft around which the strap is wound.

Abstract: The strap spool is mountable to drive shafts in various strap winding apparatus, such as winches and torsion spring counterbalances. The strap spool has a two piece design where two symmetrical spool halves slidably mate to form a drum around which the strap is wound. Each spool half has a central hub with an axial opening, which allows the spool halves to mount onto a drive shaft. An annular flange extending radially around the hub and a barrel sleeve extends from the hub perpendicular to the flange. When spool halves are mated together on a drive shaft, the barrel sleeves slidably extend into axial openings in the hub of the opposite spool half and form a tubular drum overlying the drive shaft around which the strap is wound.