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US 4,032,176 AGranted
Method of assembling seamless flexible tubing and the tubular assembly of lengths of such tubing
AssigneeViscora
InventorJean Pierre Tabary
Life of this patent
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AssigneeViscora
InventorJean Pierre Tabary
Estimating the term…
Two or more lengths of seamless tubing, for example artificial sausage casing are assembled by longitudinally aligning the end portions thereof overlapping and joined to each other by an adhesive strip band but for the time without internal communication therebetween. Internal communication between the lengths of tubing is established, for example, by introducing compressed gas into one tubing length remote from junction zone which causes this tubing length to take a cylindrical configuration moving its side walls (defined by its initially flattened shape) apart and thereby the side walls of the second joined tubing length are drawn with the corresponding side walls of the first tubing length by means of the adhesive strip band. As a result thereof the end portions of the side walls initially in contact with each other slide along each other and then out of contact in order to provide continuous internal communication in the tubular assembly. Accordingly the resultant end portions are interleaved as shown herein. A mandrel may be needed in place of the compressed air to separate the side walls and establish internal communication.
A method of assembling lengths of seamless flexible tubing wherein the lengths of tubing are initially flattened with their respective opposed inner side walls in contact, comprising the steps of:
A method of assembling lengths of seamless flexible tubing wherein the lengths of tubing are initially flattened with their respective opposed inner side walls in contact, comprising the steps of:
A tubular assembly of at least two lengths of seamless flexible tubing, opposed end portions of the lengths of tubing overlapping and contacting each other with the open ends of the tubes extending beyond each other in opposite directions, an adhesive strip wrapped around the overlapping end portions and the adjoining outer surfaces of the lengths of tubing longitudinally therebeyond, said adhesive strip being stuck to the free edge of the one of the end portions over half the periphery of the tubular assembly and being stuck to the free edge of the other of the end portions over the other half of the peripheral of the tubular assembly, the stuck free edges of the lengths of tubing being longitudinally offset a distance equal to the longitudinal length of the overlap which is less than 1/4 the circumference of the tubular assembly;
Dependencies are inferred from the claim text.