Patent ID: 6988881

Claim:
An apparatus for pleating a balloon by segmental radial compression, comprising: a. a pair of aligned, stationary base members separated a predetermined distance; b. a pair of aligned rotatable drive hubs which are moveable in relation to the stationary base member and in synchronization with each other; and c. a pleating head aligned with respect to the base members and the drive hubs, and including at least three segments; i. the segments each having a proximal end and an angled distal end with at least one angled side face terminating in an edge of a predetermined length, each segment having a centerline between the proximal and distal ends, each segment having a proximal point and a distal point, the distal point being disposed off the centerline and the proximal point being disposed off the centerline, and the proximal point being pivotally coupled by pins to the stationary base members and the distal point being pivotally coupled by pins to the rotatable hub members; ii. the segments being arranged so that the segment distal ends are disposed adjacent to and a predetermined distance away from a central point and defining a central aperture with a spiral-pleat dimension having at least three channels in communication with a central aperture, and that the segment centerlines extending therefrom toward the segment distal ends are oriented away from the central point; and iii. the segment distal ends moving closer to the central point upon rotation of the rotatable hub members in a predetermined direction, whereby the balloon is disposed around a shaft substrate, aligned in the central aperture and pleated around the shaft substrate upon rotation of the rotatable hub.