Patent attributes
A stepless fastening device includes a cap having a driving gear and multiple one-direction teeth connected to an underside thereof. The driving gear is engaged with a spool located in the base so that the strip or shoelace is wrapped to the spool. An operation unit is located beneath the cap and rotatable in a first direction for fastening and a second direction for loosening the strip or shoelace. An operation ring of the operation unit is connected to the underside of the cap and pushes an activation ring away from the cap when the operation ring is rotated in the second direction. An engaging member includes inclined teeth and pushed by the activation ring so that the inclined teeth are disengaged from the one-direction teeth of the cap when the operation ring is rotated in the second direction.
