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US 11,992,094 B2Granted
String winding and unwinding apparatus
AssigneeTyrenn Co., Ltd.
InventorsSug Whan Kim, Jun Young Kim
Life of this patent
Estimating the term…
Abstract
An apparatus for convenient tightening and loosening of strings such as those found in shoelaces of footwear is provided. The apparatus includes a rotating portion within a base portion. A cover portion, when operated in a first position, provides a ratchet movement that allows rotation in a tightening direction while preventing movement in a loosening direction. When the cover is moved to a second position, the ratchet mechanism disengages, and the strings can then be easily loosened.
Claims4
A string winding apparatus, comprising:
- a base unit;
- a middle unit coupled to the base unit;
- a rotating unit positioned between the base unit and the middle unit, wherein the rotating unit is configured and disposed to be rotatable with respect to the base unit, wherein the rotating unit comprises a first engaging portion formed thereon and a first wing part and a second wing part, and wherein the first wing part and the second wing part comprise a space therebetween for winding a string;
- and
- a cover unit coupled to the middle unit, wherein the cover unit comprises a second engaging portion inserted into or separated from the first engaging portion;
- wherein the middle unit comprises a responsive protrusion,
- wherein the cover unit comprises a ratchet protrusion for limiting rotation in one direction in response to the responsive protrusion,
- wherein the responsive protrusion and the ratchet protrusion are arranged in a direction parallel to the rotation axis of the cover unit and engaged with each other,
- wherein the responsive protrusion is disposed on an upper surface of a partition extending from a side surface of the middle unit towards a central axis of the string winding apparatus,
- wherein the responsive protrusion protrudes in a perpendicular direction from the upper surface of the partition,
- wherein the ratchet protrusion protrudes in a perpendicular direction from a bottom surface of the cover unit towards the responsive protrusion, and
- wherein the second engaging portion is integral with the cover unit and only engages with the first engaging portion.
9 more elements
A string winding apparatus, comprising:
- a base unit;
- a middle unit coupled to the base unit;
- a rotating unit positioned between the base unit and middle unit, wherein the rotating unit is configured and disposed to be rotatable with respect to the base unit, wherein the rotating unit comprises a first engaging portion formed thereon and a first wing part and a second wing part, and wherein the first wing part and the second wing part provide a space therebetween for winding a string;
- and
- a cover unit coupled to the middle unit, wherein the cover unit comprises a second engaging portion inserted into or separated from the first engaging portion;
- wherein the middle unit comprises a ratchet protrusion for limiting rotation in one direction,
- wherein the cover unit comprises a responsive protrusion corresponding to the ratchet protrusion,
- wherein the responsive protrusion and the ratchet protrusion are arranged in a direction parallel to the rotation axis of the cover unit and engaged with each other,
- wherein the ratchet protrusion is disposed on an upper surface of a partition extending from a side surface of the middle unit towards a central axis of the string winding apparatus,
- wherein the ratchet protrusion protrudes in a perpendicular direction from the upper surface of the partition,
- wherein the responsive protrusion protrudes in a perpendicular direction from a bottom surface of the cover unit towards the ratchet protrusion, and
- wherein the second engaging portion is integral with the cover unit and only engages with the first engaging portion.
9 more elements
Dependencies are inferred from the claim text.