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1. WO2021058649 - SLIDE FASTENER

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[ EN ]

CLAIMS:

1. A slider (11) for a slide fastener (10), the slider comprising:

an upper portion (20), a lower portion (21), and a guide post (23) disposed between said upper (20) and lower (21) portions, wherein:

the upper portion (20), lower portion (21) and guide post (23) co operate to define a Y-shaped channel (36), the Y-shaped channel (36) having a first arm (36a) separated from a second arm (36b) by the guide post (23), and a third arm (36c) which extends along a longitudinal axis (A) of the slider and which adjoins the first and second arms (36a, 36b);

the first (36a) and second (36b) arms are configured to carry uncoupled coupling elements (14a, 14b) of a first stringer (12a) and second stringer (12b) of the slide fastener (10) respectively;

the third arm (36c) is configured to carry coupling elements (14a, 14b) of the first stringer (12a) and second stringer (12b), when coupled, wherein the coupling elements (14a, 14b) of each of the first stringer (12a) and second stringer (12b) are located along the respective stringer (12a, 12b) at a pitch distance (P);

the third arm (36c) has a third arm length (27) defined, parallel to the longitudinal axis (A) of the slider, between a tip (22) of the guide post (23) proximal the third arm (36c) and an end of the third arm (36c) distal to the guide post (23); and

the third arm length (27) is at least 8 times the pitch distance (P).

2. The slider (11) of claim 1 wherein the third arm (36c) is defined, at least in part, by first and second opposing side flanges (24a, 24b, 25a, 25b) which each extend from the upper (20) or lower portion (21) of the slider, wherein:

said first (24a, 25a) and second (24b, 25b) side flanges are spaced from one another, in a direction perpendicular to the longitudinal axis (A) of the slider, by a third arm width (W’);

said third arm width (W’) is configured to be greater than or equal to a width (Wc) of coupling elements (14a, 14b) of the first stringer (12a) and second stringer (12b), when coupled;

the third arm (36c) has a first portion (16) and a second portion (17), wherein:

the second portion (17) is provided between the first portion (16) and a tip (22) of the guide post (23) proximal the first portion (16); and, a first portion of the first side flange (24a, 25a) and a first portion of the second side flange (24b, 25b) are substantially parallel and define the first portion (16) of the third arm (36c).

3. The slider (11) of claim 1 or 2 wherein the third arm length (27) is less than 12 times the pitch distance (P).

4. A slider (11) according to claim 2 or 3, wherein:

the third arm length (27) provides a first portion length (27a) and a second portion length (27b), wherein:

the first portion length (27a) is defined as the length of the first portion (16), parallel to the longitudinal axis (A) of the slider;

the second portion length (27b) is defined, parallel to the longitudinal axis (A) of the slider, between a tip (22) of the guide post (23) proximal the third arm and an end of the first portion (17) of the third arm (36c) proximal the guide post (23); and

the first portion length (27a) is at least 6 times the pitch distance (P).

5. A slider (11) for a slide fastener (10), the slider comprising:

an upper portion (20), a lower portion (21), and a guide post (23) disposed between said upper (20) and lower (21) portions, wherein:

the upper portion (20), lower portion (21) and guide post (23) co operate to define a Y-shaped channel (36), the Y-shaped channel (36) having a first arm (36a) separated from a second arm (36b) by the guide post (23), and a third arm (36c) which extends along a longitudinal axis (A) of the slider and which adjoins the first and second arms;

the first (36a) and second (36b) arms are configured to carry uncoupled coupling elements (14a, 14b) of a first stringer (12a) and second stringer (12b) of the slide fastener (10) respectively;

the third arm (36c) is configured to carry coupling elements (14a, 14b) of the first stringer (12a) and second stringer (12b), when coupled, wherein the coupling elements (14a, 14b) of each of the first stringer (12a) and second stringer (12b) are located along the respective stringer (12a, 12b) at a pitch distance (P);

the third arm (36c) is defined, at least in part, by first and second opposing side flanges (24a, 24b, 25a, 25b) which each extend from the upper (20) and/or lower portion (21) of the slider, wherein:

said first (24a, 25a) and second (24b, 25b) side flanges are spaced from one another, in a direction perpendicular to the longitudinal axis (A) of the slider, by a third arm width (W’);

said third arm width (W’) is configured to be greater than or equal to a width (Wc) of coupling elements (14a, 14b) of the first stringer (12a) and second stringer (12b), when coupled;

the third arm (36c) has a first portion (16) and a second portion (17), wherein:

the second portion (17) is provided between the first portion (16) and a tip (22) of the guide post (23) proximal the first portion (16); and,

a first portion of the first side flange (24a, 25a) and a first portion of the second side flange (24b, 25b) are substantially parallel and configured so as to define the first portion of the third arm (36c);

the third arm (36c) has a third arm length (27) defined, parallel to the longitudinal axis (A) of the slider, between a tip (22) of the guide post (23) proximal the third arm (36c) and an end of the third arm (36c) distal to the guide post (23);

the third arm length (27) provides a first portion length (27a) and a second portion length (27b), wherein:

the first portion length (27a) is defined as the length of the first portion (16) parallel to the longitudinal axis (A) of the slider;

the second portion length (27b) is defined, parallel to the longitudinal axis (A) of the slider, between a tip (22) of the guide post (23) proximal the third arm and an end of the first portion proximal the guide post (23); and

the first portion length (27a) is at least 6 times the pitch distance (P).

6. The slider (11 ) of claim 5 wherein the first portion length (27a) is less than 10 times the pitch distance (P).

7. A slider (11) for a slide fastener (10), the slider comprising:

an upper portion (20), a lower portion (21), and a guide post (23) disposed between said upper (20) and lower (21) portions, wherein:

the upper portion (20), lower portion (21) and guide post (23) co operate to define a Y-shaped channel (36), the Y-shaped channel (36) having a first arm (36a) separated from a second arm (36b) by the guide post (23) and a third arm (36c) which extends along a longitudinal axis (A) of the slider and which adjoins the first (36a) and second (36b) arms; the first (36a) and second (36b) arms are configured to carry uncoupled coupling elements (14a, 14b) of a first stringer (12a) and second stringer (12b) of the slide fastener (10) respectively;

the third arm (36c) is configured to carry coupling elements (14a, 14b) of the first stringer (12a) and second stringer (12b), when coupled, wherein the coupling elements (14a, 14b) of each of the first stringer (12a) and second stringer (12b) are located along the respective stringer (12a, 12b) at a pitch distance (P);

the third arm (36c) is defined, at least in part, by first and second opposing side flanges (24a, 25a, 24b, 25b) which each extend from the upper (20) and/or lower portion (21) of the slider, wherein:

said first (24a, 25a) and second (24b, 25b) side flanges are spaced from one another, in a direction perpendicular to the longitudinal axis (A) of the slider, by a third arm width (W’);

said third arm width (W’) is configured to be greater than or equal to a width (Wc) of coupling elements (14a, 14b) of the first stringer (12a) and second stringer (12b), when coupled;

the third arm (36c) has a first portion (16) and a second portion (17), wherein:

the second portion (17) is provided between a tip (22) of the guide post (23) and the first portion (17); and

a first portion of the first side flange (24a, 25a) and a first portion of the second side flange (24b, 25b) being substantially parallel and defining the first portion of the third arm;

the third arm (36c) has a third arm length (27), parallel to the longitudinal axis (A) of the slider;

the third arm length (27) provides a first portion length (27a) and a second portion length (27b), wherein:

the first portion length (27a) is defined as the length of the first portion, parallel to the longitudinal axis (A) of the slider;

the second portion length (27b) is defined, parallel to the longitudinal axis (A) of the slider, between a tip (22) of the guide post (23) proximal the third arm and an end of the first portion proximal the guide post (23); and

the first portion length (27a) is greater than or equal to 2 times the second portion length (27b).

8. The slider (11) of claim 7, wherein the first portion length (27a) is less than 3.5 times the second portion length (27b).

9. A slide fastener (10) comprising a slider (11) according to any preceding claim, wherein:

the slider is mounted to a first stringer (12a) and a second stringer (12b), the first stringer (12a) comprising coupling elements (14a) which are couplable with coupling elements (14b) of the second stringer (12b), and the second stringer (12b) comprising coupling elements (14b) which are couplable with coupling elements (14a) of the first stringer (12a);

the coupling elements (14a, 14b) of each of the first stringer (12a) and second stringer (12b) are located along a longitudinal axis (A) of the respective stringer (12a, 12b) at a pitch distance (P);

the first (36a) and second arms (36b) carry uncoupled coupling elements (14a, 14b) of the first stringer (12a) and the second stringer (12b) of the slide fastener (10) respectively; and

the third arm (36c) carries coupling elements (14a, 14b) of the first stringer (12a) and second stringer (12b), when coupled.

10. A slide fastener (10) according to claim 9, wherein a first coil comprises the coupling elements (14a) of the first stringer (12a) and a second coil comprises the coupling elements (14b) of the second stringer (12b).

11 . A slide fastener (10) according to claim 9 or claim 10, wherein: the first and second stringers (12a, 12b) comprise a woven or knitted material; the coupling elements (14a) of the first stringer (12a) are woven or knitted into the woven or knitted material of the first stringer (12a); and the coupling elements (14b) of the second stringer (12b) are woven or knitted into the woven or knitted material of the second stringer (12b).

12. A slide fastener (10) according to any of claims 9 to 11 , wherein the slide fastener

(10) is a fluid-tight slide fastener.

13. A slide fastener (10) according to claim 12, wherein each of the first and second stringers (12a, 12b) comprise respective sealing lips (15a, 15b), said sealing lips (15a, 15b) comprising a fluid-tight material and contacting one another when coupling elements (14a, 14b) of the first and second stringers (12a, 12b) are coupled.

14. A slide fastener (10) according to claim 13, wherein the first (36a) and second (36b) arms of the slider (11 ) carry the sealing lip (15a, 15b) of the first stringer (12a) and second stringer (12b) respectively; and the third arm (36c) of the slider carries the sealing lips (15a, 15b) of the first stringer (12a) and second stringer (12b).

15. A slide fastener (10) according to claim 14, wherein the third arm (36c) of the slider

(11 ) is sized such that a first cavity (42) is formed between a portion of the upper portion (20) defining the third arm (36c) and the sealing lip (15a) of the first stringer (12a), and a second cavity (44) is formed between said portion of the upper portion (20) defining the third arm (36c) and the sealing lip (15b) of the second stringer (12b).

16. An article comprising a slide fastener (10) according to any of claims 9 to 15.