Stringer for a slide fastener

Claim 2

A stringer blank for a slide fastener comprising an elongated body, a pair of outwardly extending guide rib-like members disposed on one face of said body, said guide rib-like members being transversely spaced apart, each guide rib-like member being disposed adjacent to a longitudinal edge portion of said body, said body being provided with first and second sets of a plurality of longitudinally, equally spaced apart slots extending from one longitudinal edge portion of said body to a transversely opposite longitudinal edge portion of said body to define a series of transverse substantially parallel ladder-like ribs, each of said parallel ladder-like ribs being provided with a centrally located enlarged portion and a transversely spaced apart pair of abutment members, said abutment members being disposed on an opposite face of said body between said pair of guide rib-like members, said first set of slots extending through said one longitudinal edge portion of said body to be open on one end thereof, and said secOnd set of slots extending through said transversely opposite longitudinal edge portion of said body to be open on an opposite end thereof, said slots of said first set being alternately disposed with respect to said slots of said second set.

Claim 3

A stringer blank according to claim 1, wherein said body is a plastic material.

Claim 4

A stringer blank according to claim 1, wherein said body is a heat resistant material.

Claim 5

A stringer blank according to claim 1, wherein said enlarged portion includes an outwardly ex-tending element, and a recess disposed on each side of said element adjacent its base portion.

Claim 6

A stringer blank according to claim 4, wherein said element extends in the same direction as said guide members.

Claim 7

A stringer blank according to claim 4, wherein said element extends in an opposite direction of said extending guide members.

Claim 8

A stringer blank according to claim 1, wherein a recess is disposed on opposite sides of each abutment member.

Claim 9

A stringer for a slide fastener comprising a plurality of U-shaped projection elements including at least first, second, third, fourth and fifth consecutively adjacent U-shaped elements, each of said U-shaped elements including a bight end connecting a first leg to a second leg, each of said U-shaped elements being provided with an enlarged interlocking head member at said bight end, an open receiving slot disposed between said first and second legs at an opposite end of each of said U-shaped elements adapted to house a fabric to which said stringer is attached, abutment means disposed between said first and second legs and between said bight and opposite ends of each of said U-shaped elements to position the fabric relative to said interlocking head members to provide a uniform spacing between said interlocking head members and the fabric to prevent the fabric from coming in contact with said interlocking head members, a first series of longitudinally, equally spaced portions for being disposed on one surface of the fabric with one first series portion being movable with respect to an adjacent first series portion, said one first series portion connecting said first leg of said first U-shaped element to said first leg of said second U-shaped element, said adjacent first series portion connecting said first leg of said third U-shaped element to said first leg of said fourth U-shaped element, said first legs of said first and second U-shaped elements being disposed in a free relation with said first legs of said third and fourth U-shaped elements and being movable with respect thereto, a second series of longitudinally, equally spaced portions for being disposed on an opposite surface of the fabric with one second series portion being movable with respect to an adjacent second series portion, said one second series portion connecting said second leg of said second U-shaped element to said second leg of said third U-shaped element, said adjacent second series portion connecting said second leg of said fourth U-shaped element to said second leg of said fifth U-shaped element, said second legs of said second and third U-shaped elements being disposed in a free relation with said second legs of said fourth and fifth U-shaped elements, guide means disposed on said portions of said first and second series, said guide means being adjacent said opposite ends of said U-shaped elements to restrict a slider to longitudinal movement along said stringer, said guide means including spaced apart guide rib-like members, said guide rib-like members on said first series portions extending outwardly in one direction, and said guide rib-like members on said second series portions extending outwardly in an opposite direction.

Claim 10

A stringer for a slide fastener comprising a plurality of U-shaped projection elements including at least first, second, third, fourth and fifth consecutively adjacent U-shaped elements, each of said U-shaped elements including a bight end connecting a first leg to a second leg, each of said U-shaped elements being provided with an enlarged interlocking head member at said bight end, an open receiving slot disposed between said first and second legs at an opposite end of each of said U-shaped elements adapted to house a fabric to which said stringer is attached, abutment means disposed between said first and second legs and between said bight and opposite ends of each of said U-shaped elements to position the fabric relative to said interlocking head members to provide a uniform spacing between said interlocking head members and the fabric to prevent the fabric from coming in contact with said interlocking head members, a first series of longitudinally, equally spaced portions for being disposed on one surface of the fabric with one first series portion being movable with respect to an adjacent first series portion, said one first series portion connecting said first leg of said first U-shaped element to said first leg of said second U-shaped element, said adjacent first series portion connecting said first leg of said third U-shaped element to said first leg of said fourth U-shaped element, said first legs of said first and second U-shaped elements being disposed in a free relation with said first legs of said third and fourth U-shaped elements and being movable with respect thereto, a second series of longitudinally, equally spaced portions for being disposed on an opposite surface of the fabric with one second series portion being movable with respect to an adjacent second series portion, said one second series portion connecting said second leg of said second U-shaped element to said second leg of said third U-shaped element, said adjacent second series portion connecting said second leg of said fourth U-shaped element to said second leg of said fifth U-shaped element, said second legs of said second and third U-shaped elements being disposed in a free relation with said second legs of said fourth and fifth U-shaped elements, guide means disposed on said portions of said first and second series, said guide means being adjacent said opposite ends of said U-shaped elements to restrict a slider to longitudinal movement along said stringer, said guide means including spaced apart guide rib-like members, said guide rib-like members on said first series portions extending outwardly in one direction, and said guide rib-like members on said second series portions extending outwardly in an opposite direction.

Claim 11

A stringer according to claim 8, wherein each of said U-shaped elements is a plastic material.

Claim 12

A stringer according to claim 8, wherein each of said U-shaped elements is a heat resistant material.

Claim 13

A stringer according to claim 8, whereIn said receiving slot is provided with an enlarged opening adjacent said abutment means to house an enlarged portion of the fabric and lock the enlarged portion therein.