Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
90 words
The improvement defined in claim 1 wherein said thermoplastic synthetic resin is molded around said die strip in step a whereby said die strip is flanked by a body of said synthetic resin interconnecting the heads in said cavities and by a layer of said synthetic resin overlying said die strip, said die strip being separated from the heads formed in said cavities and said body of synthetic resin by cutting away said layer from said body and from the synthetic resin in said cavities, and thereafter withdrawing said strip.
Claim 2
Dependent Claim
43 words
The improvement defined in claim 1 wherein said die strip is formed along each of its longitudinal edges with a respective row of said cavities whereby a pair of said coupling elements is formed simultaneously by injecting said synthetic resin into said cavities.
Claim 3
Dependent Claim
77 words
The improvement defined in claim 1 wherein said die strip is endless and is returned to step a for further extrusion of thermoplastic synthetic resin into said cavities upon separation of said strip from the coupling element formed thereon, the coupling element and the die strip being separated continuously from one another and said synthetic resin being injected into the cavities of said die strip while said die strip is displaced continuously along a closed transport path.
Claim 4
Dependent Claim
46 words
The improvement defined in claim 1 wherein a respective support band is disposed adjacent said die strip and said synthetic resin is molded at least in part onto the support band, thereby uniting the coupling element formed on said die strip with the respective support band.
Claim 5
Dependent Claim
35 words
The improvement defined in claim 1 wherein said support band of the respective coupling element is formed by extruding a flat tape of said synthetic resin integrally with the synthetic resin masses in said cavities.
Claim 6
Dependent Claim
57 words
The improvement defined in claim 1 further comprising the step of compressing said thermoplastic synthetic resin into said cavities upon the injection of said resin therein in step a and prior to the separation of the coupling element from the die strip, said synthetic resin being pressed into said cavities in a direction transverse to said strip.
Claim 7
Dependent Claim
121 words
The improvement defined in claim 1 wherein each of said coupling elements is formed on the respective support band in step a, and wherein two spaced-apart die strips having registering cavities and of substantially identical configuration are disposed on opposite sides of the support band to which the coupling element is to be attached and are displaced together with said support band through an extrusion nozzle wherein said synthetic resin encases both said die strips and a marginal portion of the support band in the region of said die strips, both said die strips being separated from the coupling element whereby the heads formed in the respective concavities are unitarily bonded with one another and are affixed to the support band.
Claim 8
Dependent Claim
76 words
The improvement defined in claim 8 wherein a spacer strip is disposed between said die strips in the region of the registering heads and alongside an edge of said support band and is separated from the support band, whereby the heads formed in the cavities of the respective die strips protrude laterally of the support band to which they are bonded and are separated by a gap corresponding essentially to the thickness of said spacer strip.
Claim 9
Dependent Claim
34 words
The improvement defined in claim 9 wherein the support band is provided with throughgoing openings and said synthetic resin is forced through these openings to interconnect the heads of opposite sides of the band.