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US 11,363,859 B2Granted
Slide fastener
AssigneeYKK Corporation
InventorsYu Chen Tung, Shigeyoshi Takazawa, Yoshinori Kojima
Life of this patent
Estimating the term…
Abstract
Fastener element of slide fastener has an intermediate portion including bent or curved portion between a terminal portion and a base portion. The intermediate portion has an engaging protrusion and an engaged recess which are respectively protruded and recessed on an axis that matches a movement direction of the slider. In an orthogonal direction orthogonal to the axis, a first distance between the axis and the terminal surface of the terminal portion is less than a second distance between the axis and the base end surface of the base portion.
Claims20
A slide fastener comprising:
- a pair of left and right fastener stringers, wherein each fastener stringer includes a fastener tape and a plurality of fastener elements attached to the fastener tape, each fastener element including a base portion secured to the fastener tape and a terminal portion positioned opposite to the base portion, the fastener element extending along a left-right direction between the base portion and the terminal portion;
- and
- at least one slider for opening and closing the pair of left and right fastener stringers, the slider including an upper wing, a lower wing, a coupling pillar and a flange, the coupling pillar coupling the upper wing and the lower wing, the coupling pillar being opposed to or touched by a terminal surface of the terminal portion of the fastener element, the flange being provided at least one of the upper wing and the lower wing, and the flange being opposed to or touched by a base end surface of the base portion of the fastener element, wherein:
- the slide fastener has an axis defining a movement direction of the at least one slider relative to the plurality of fastener elements and along the pair of left and right fastener stringers,
- the fastener element has an intermediate portion including bent or curved portion between the terminal portion and the base portion, the bent or curved portion being bent or curved along the axis,
- the intermediate portion has an engaging protrusion and an engaged recess which are respectively protruded and recessed on the axis within a maximum width of the base end surface of the base portion along the axis,
- in the left-right direction orthogonal to the axis, a first distance between the axis and the terminal surface of the terminal portion is less than a second distance between the axis and the base end surface of the base portion, and
- the fastener element has a first recess recessed between the engaging protrusion and the base portion.
5 more elements
A slide fastener comprising:
- a pair of left and right fastener stringers, wherein each fastener stringer includes a fastener tape and a plurality of fastener elements attached to the fastener tape, each fastener element including a base portion secured to the fastener tape and a terminal portion positioned opposite to the base portion, the fastener element extending along a left-right direction between the base portion and the terminal portion;
- at least one slider that moves frontward to close the pair of left and right fastener stringers and moves rearward to open the pair of left and right fastener stringers, wherein:
- the slide fastener has an axis defining a movement direction of the at least one slider relative to the plurality of fastener elements and along the pair of left and right-fastener stringers,
- each of the left and right fastener elements is bent or curved along the axis so as to have an engaging protrusion at a front side of the fastener element and an engaged recess at a rear side of the fastener element, the engaging protrusion and the engaged recess being respectively protruded and recessed on the axis within a maximum width of a base end surface of the base portion along the axis,
- the fastener element at one side of the left and right sides is provided with a first recess between the engaging protrusion and the base portion, the first recess being configured to receive a first protuberance that is protruded rearward and is provided on the fastener element at the other side of the left and right sides, and
- in the respective left and right fastener elements, the engaging protrusion is provided at a position shifted closer to the base portion than the first protuberance in the left-right direction, and the first recess is positioned at a position shifter closer to the base portion than the engaged recess in the left-right direction.
3 more elements
A slide fastener comprising:
- a pair of left and right fastener stringers, wherein each fastener stringer includes a fastener tape and a plurality of fastener elements attached to the fastener tape, each fastener element including a base portion secured to the fastener tape and a terminal portion positioned opposite to the base portion, each fastener element extending along a left-right direction between the base portion and the terminal portion;
- and
- at least one slider for opening and closing the pair of left and right fastener stringers, wherein:
- the slide fastener having an axis defining a movement direction of the at least one slider relative to the plurality of fastener elements and along the pair of left and right fastener stringers,
- each of the fastener elements at the left and right sides has an intermediate portion including bent or curved portion between the terminal portion and the base portion, wherein the bent or curved portion is bent or curved along the axis,
- the intermediate portion has an engaging protrusion and an engaged recess which are respectively protruded and recessed on the axis within a maximum width of the base end surface of the base poriton along the axis, and
- the fastener element at one side of the left and right sides has at least one displacement-restricting portion that prevents displacement, along an up-down direction, of the fastener element at the other side of the left and right sides.
4 more elements
Dependencies are inferred from the claim text.