Slide fastener elements, fastener stringers, and fastener chain
AssigneeYKK Corporation
InventorsHaruaki Il, Tsutomu Saito
Life of this patent
Estimating the term…
Abstract
A fastener element for a slide fastener includes: a coupling portion; and one single root portion either including, or being plastically bendable to include, a bent portion and a distal end portion which extends from the bent portion towards a side of the coupling portion which is closer to the fastener tape. Each face of the coupling portion includes an engaging protrusion protruding in a lengthwise direction, and an engaging recess recessed in a lengthwise direction with respect to the face, and is configured for receiving an engaging protrusion of a fastener element on the opposite stringer in a closed condition of the slide fastener.
Claims17
A fastener element for a slide fastener, the fastener element comprising:
- a coupling portion having two opposite faces in a lengthwise direction;
- and
- one single root portion extending from the coupling portion, the root portion either forming, or plastically bendable to form, a Major arc shaped groove for receiving and holding a length of a cord and an edge portion of a fastener tape, the root portion either comprising, or being plastically bendable to comprise, a bent portion and a distal end portion which extends from the bent portion towards a side of the coupling portion which is closer to the fastener tape, wherein
- each face of the coupling portion comprises an engaging protrusion protruding in the lengthwise direction, and an engaging recess recessed in the lengthwise direction with respect to its respective face, and is configured for receiving an engaging protrusion of a fastener element on an opposite stringer in a closed condition of the slide fastener,
- the coupling portion comprises a body portion connected to the root portion, and a distal plate portion extending from the body portion and providing the two opposite faces with the engaging protrusions and the engaging recesses, and
- the root portion has a first lengthwise thickness, and the distal plate portion has a second lengthwise thickness that is less than the first lengthwise thickness of the root portion.
A fastener element for a slide fastener, the fastener element comprising:
- a coupling portion having two opposite faces in a lengthwise direction;
- and
- one single root portion extending from the coupling portion, the root portion either forming, or plastically bendable to form, a Major arc shaped groove for receiving and holding a length of a cord and an edge portion of a fastener tape, the root portion either comprising, or being plastically bendable to comprise, a bent portion and a distal end portion which extends from the bent portion towards a side of the coupling portion which is closer to the fastener tape, wherein
- each face of the coupling portion comprises an engaging protrusion protruding in a lengthwise direction, and an engaging recess recessed in the lengthwise direction with respect to its respective face, and is configured for receiving an engaging protrusion of a fastener element on an opposite stringer in a closed condition of the slide fastener,
- the Major arc shaped groove for receiving the cord defines a central point which lies in a geometrical plane extending in the lengthwise and transversal directions, and
- the engaging protrusion and the engaging recess extend partially beyond the plane toward the fastener tape.
Dependencies are inferred from the claim text.