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US 6,691,433 B2Granted
Automated tightening shoe
OwnerKun-Chung Liuinventor
Life of this patent
Estimating the term…
Abstract
An automated tightening shoe includes a sole, an upper, a closure member, a tightening mechanism and a drive unit. The tightening mechanism includes a first fastener mounted on the upper, and a second fastener connected to the closure member and capable of removable engagement with the first fastener so as to retain releasably the closure member at a tightened state. The drive unit is mounted inside the sole, and is operable so as to pull the second fastener toward the first fastener in order to inter-engage the first and second fasteners, thereby resulting in automated tightening of the shoe.
Claims13
An automated tightening shoe comprising:
- a sole;
- an upper connected to said sole and having a toe portion and a heel portion, said upper being formed with an opening adjacent to said heel portion to permit slipping of a foot into said upper, said upper further having a tongue connected to said toe portion, and first and second closure tabs disposed to overlap opposite lateral sides of said tongue, respectively;
- a closure member provided on said upper, extending between said first and second closure tabs, and connected to at least one of said first and second closure tabs, said closure member being movable from a loosening state, where said closure member allows limited movement of said first and second closure tabs away from each other, to a tightened state, where said closure member pulls said first and second closure tabs toward each other to tighten said shoe around the foot;
- a tightening mechanism including
- a first fastener having a mounting section mounted securely on said first closure tab, and a fastener engaging section provided on said mounting section, and
- a second fastener connected to said closure member, and having a fastener engaging portion capable of removable engagement with said fastener engaging section of said first fastener so as to retain releasably said closure member at the tightened state;
- and
- a drive unit mounted inside said sole, and including
- a housing,
- a spool mounted rotatably in said housing,
- a pull string having a first anchored end connected to said spool, a second anchored end connected to said second fastener, and an intermediate string portion between said first and second anchored ends, said intermediate string portion extending outwardly of said sole and said upper to permit connection of said second anchored end to said second fastener, and
- a motor unit mounted in said housing and coupled to said spool, said motor unit being operable so as to drive rotation of said spool in said housing to wind said pull string on said spool for pulling said second fastener toward said first fastener in order to engage said fastener engaging portion with said fastener engaging section, thereby resulting in automated tightening of said shoe.
9 more elements
Dependencies are inferred from the claim text.