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Concept Search - What can I type?
For a concept search, you can enter phrases, sentences, or full paragraphs in English. For example, copy and paste the abstract of a patent application or paragraphs from an article.
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This article describes a toroidal seal having a U-shaped cross section for insertion over the cut end of spiral bendable metal tubing which is to be connected to straight walled tubing.
English (United States)
This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately
64% of the total text.
Page 1 of 2
This article describes a toroidal seal having a U-shaped cross section for
insertion over the cut end of spiral bendable metal tubing which is to be
connected to straight walled tubing.
Fig. 1 shows how spiral fabricated flexible tubing appears prior to welding. A
strip of metal having corrugations A, B, C, D, E, and F and weld flanges 11 is
formed into a spiral tube, as shown in Fig. 1 and the flanges 11 are welded to
each other. After welding, the corrugations A, B, C, D, E, and F remain uniform,
but the area between corrugation F and A has a slightly different profile because
it contains the area of the weld.
The seal article of manufacture is shown in cross section in Figs. 2 and 3.
The seal includes projections A prime, B prime, C prime, D prime, E prime, and F
prime which engage corrugations A through F and provide a seal. Because the
area between A and F contains the weld, the outside diameter of the tube is not
as large at that point and the high point of the corrugation cannot make contact
with the inside surface 13 of the seal. Accordingly, instead of placing the
projection F prime at an angle of 300 degrees, it is placed at 0 degrees behind
projection A prime, permitting the area between projection A prime and F prime
to be molded to seal the weld area.
The seal will usually be made out of a material such as neoprene or rubber
which permits the outer leg of the U to be inverted so that the projections A prime
and F prime are easily visibl...