Fastener stringer

Patent metadata

Field	Value
Publication number	US-9788615-B2
Application number	US-201415113905-A
Country	US
Kind code	B2
Filing date	Feb 17, 2014
Priority date	Feb 17, 2014
Publication date	Oct 17, 2017
Grant date	Oct 17, 2017

Abstract

These fastener elements have: an element main body portion having a coupling head portion; and first and second projections that project in a tape surface/rear-surface direction from the element main body portion. The first and second projections have a top surface, peripheral side surfaces standing upright from the element main body portion, and at least one sloped surface between the top surface and the peripheral side surfaces that has a different angle of inclination from the top surface and the peripheral side surfaces. As a result, the fastener elements appear long and narrow in the element length direction and have an external appearance close to that of a metal element. Furthermore, a stop claw portion is less likely to catch on the fastener elements when starting the sliding operation of a slider.

First claim

The invention claimed is:

1. A fastener stringer including a fastener tape and a plurality of fastener elements made of synthetic resin attached to a tape side edge portion of the fastener tape, in which
each fastener element includes an element main body portion fixed so as to extend across a first tape surface and a second tape surface of the fastener tape and first and second projections projected in a tape front and back direction from the element main body portion, and in which
the element main body portion has a body portion fixed to the fastener tape, a neck portion in a constricted shape extending in a tape outward direction from the body portion and a coupling head portion in an elliptical shape extending from the neck portion, wherein
an outer surface of the first projection and an outer surface of the second projection respectively have at least one top surface parallel to the first tape surface and the second tape surface of the fastener tape, a peripheral side surface rising from the element main body portion and at least one sloped surface which is between the top surface and the peripheral side surface and has a different inclination angle with respect to the top surface and the peripheral side surface.

2. The fastener stringer according to claim 1 , wherein
the first projection includes an element base disposed on the body portion and an element tip end portion extending from the element base in the tape outward direction, wherein the element tip end portion has a tapered shape in which a dimension in a tape length direction gradually decreases toward the tape outward direction,
the element base includes a first portion of each of the at least one top surface, the peripheral side surface, and the at least one sloped surface,
the element tip end portion includes a second portion of each of the peripheral side surface and the at least one sloped surface, and
the second portion of the at least one sloped surface of the element tip end portion of the first projection has an intermediate sloped surface which slopes upward from the peripheral side surface to a top portion so as to have a smaller inclination angle with respect to the first tape surface of the fastener tape than that of the peripheral side surface.

3. The fastener stringer according to claim 2 , wherein
the intermediate sloped surface of the element tip end portion is formed as a flat surface.

4. The fastener stringer according to claim 2 , wherein
the peripheral side surface of the element tip end portion is formed as a curved surface which curves in a concave shape or a flat surface from the element main body portion to the intermediate sloped surface.

5. The fastener stringer according to claim 2 , wherein
the element base includes an intermediate sloped surface which slopes upward from the peripheral side surface to the top surface so as to have a smaller inclination angle with respect to the first tape surface of the fastener tape than that of the peripheral side surface, and
the intermediate sloped surface of the element tip end portion and the intermediate sloped surface of the element base are formed as a single continuous surface.

6. The fastener stringer according to claim 5 , wherein
the intermediate sloped surface of the element tip end portion is disposed so as to extend in the tape outward direction beyond a most constricted part of the neck portion of the element main body portion.

7. The fastener stringer according to claim 5 , wherein
a first ridge line portion formed between the peripheral side surface and the intermediate sloped surface of the element base is disposed on an outer position than a most constricted part of the neck portion in the tape length direction, and
a second ridge line portion formed between the intermediate sloped surface and the top surface of the element base is disposed on an inner position than the most constricted part of the neck portion in the tape length direction.

8. The fastener stringer according to claim 2 , wherein
a maximum dimension in the tape front and back direction from the element main body portion to the top portion in the element tip end portion of the first projection is set to be larger than a half size of the maximum dimension in the tape front and back direction of the element main body portion.

9. The fastener stringer according to claim 1 , wherein
the second projection has a plane-symmetrical shape with respect to the first projection about a center position in the tape front and back direction of the fastener tape.

Assignees

• Ykk Corp

Inventors

• Kojima Masayoshi

Classifications

• A44B19/06 Primary

  with substantially rectangular members having interlocking projections and pieces · CPC title

• Y10T24/2539

  Interlocking surface constructed from plural elements in series · CPC title

• Y10T24/255

  having interlocking portion with specific shape · CPC title