 Accumulator arrangement for the sunlight energy |
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| Energy efficient housing structure |
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| Self contained heat exchange apparatus |
| OF PREFERRED EXEMPLARY EMBODIMENTS With momentary reference to FIG. 7, a schematic representation ... |
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| Solar collector comprising an evacuated cover |
| What is claimed is: 1. A solar collector, which comprises an absorber provided with at least one ... |
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| Solar collector |
| What is claimed is: 1. A solar collector which comprises an evacuated transparent envelope; an ... |
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| Variable pressure thermal insulating jacket |
| OF PREFERRED EMBODIMENTS In a preferred form of the invention shown in FIG. 8 the gas pressure in ... |
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| Determining a masking level for a subband in a subband audio encoder |
| OF A PREFERRED EMBODIMENT The present invention provides a method, a device, and systems for ... |
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| Strip casing unit with downstream multi-stand continuous rolling mill |
| We claim: 1. In a process for making hot-rolled steel strip from a striplike continuously cast ... |
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| Heat treatment cup for a beverage container |
| ACCORDING TO THE PREFERRED EMBODIMENTS OF THE PRESENT INVENTION FIGS. 1 and 2 show a heat ... |
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| Deformable tubular container |
| The present invention provides a new tubular container which can contain at least two products ... |
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Process of and apparatus for curving a casing of stretched plastic material
| Details |
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Inventors: Bos, Arnold;
Assignee: International Chemical Engineering Establishment (Vaduz, LI)
Primary Examiner: Thurlow; Jeffery R.
Assistant Examiner:
Attorney, Agent or Firm: Blanchard, Flynn, Thiel, Boutell & Tanis
A casing of stretched plastic material, whether or not filled with a fluid such as gas or air, is wound with some tension about a smooth heated mandrel. During its curved path of travel said casing is on the one hand subjected to a contact or a radiation heat and on the other hand to a convection heat, said contact radiation heat prevailing during a period of time which is greater than that of the convection heat, thus causing the inner curved portion of the said casing to set during the time that the outer portions of the casing windings have already cooled down, so that smooth curved surfaces are obtained. |
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DETAILED DESCRIPTION What is claimed is: 1.
A process for curving an elongated, dry, inflated casing of plastic material, comprising the steps of: heating the surface of a cylindrical mandrel; winding said casing helically on said cylindrical mandrel so that the adjacent windings contact one another; heating the inner surface of the casing windings, due to their engagement with said cylindrical mandrel; supplying heated air to the externally exposed surfaces of said casing as said casing is wound onto said cylindrical mandrel and for a first period of time thereafter; maintaining said casing in contact with said heated cylindrical mandrel surface for at least a second period of time following said first period of time; and removing said casing from said cylindrical mandrel following said second period of time, including coaxially tucking up said casing on an elongated stripping mandrel by rotationally driving a plurality of stripping rollers disposed around and adjacent said stripping mandrel.
2.
The process of claim 1, including the steps of: releasably fastening a leading end of said casing to said cylindrical mandrel prior to said step of winding said casing on said cylindrical mandrel; and releasing said leading end of said casing from said cylindrical mandrel prior to said step of removing said casing from said cylindrical mandrel.
3.
The process of claim 1, wherein said step of winding said casing helically on said cylindrical mandrel is carried out by rotating said cylindrical mandrel and advancing a supply of said casing axially along said cylindrical mandrel.
4.
The process of claim 1, including the step of inflating said casing by supplying a fluid to the interior thereof.
5.
The process of claim 4, wherein said step of inflating said casing includes the step of supplying said fluid to the interior of said casing through a channel provided in said stripping mandrel.
6.
The process of claim 1, wherein said step of removing said casing includes, prior to said step of tucking up said casing, the steps of inserting said cylindrical mandrel into a sleeve coaxial therewith and then removing said cylindrical mandrel from said sleeve, thereby transferring said helically wound casing to said sleeve
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Heat Accumulators 
