US Patent 10351385 Reduced sized wearable retractable

A pawl-less retractable comprises an inner frame with a drum-sperrad assembly mounted to the inner frame between side members of the frame to rotate relative to the frame. The inner frame is pivotally mounted to a stop cap above the drum-sperrad assembly such that the frame, and hence the drum-sperrad assembly, can pivot relative to the stop cap. The stop cap comprises a central body, a leading wing extending from a first side of the central body and a trailing wing extending from a second side of the central body opposite said first side. In use, the inner frame and drum-sperrad assembly can pivot relative to the stop cap or alternatively an outer frame, between an unlocked position in which the teeth of the sperrad are inside of an engagement zone circle and a locked position in which the teeth are outside of the engagement zone circle.