Pipes and tubular conduits – Distinct layers – With spiral seam
Patent
1972-04-25
1976-04-20
Goldstein, Herbert
Pipes and tubular conduits
Distinct layers
With spiral seam
138122, 138129, 138154, F16L 1102
Patent
active
039511740
ABSTRACT:
A tubular device for providing a very small passageway suitable for discharging a product and a pressurized material from a container of the aerosol type, wherein the product and the material are disposed, upon opening of a control valve at one end of the tubular device. The tubular device is formed by twisting a plurality of elongate filaments in a rope-like fashion along the lengths thereof to forcefully close the surfaces of the filaments together along the entire length, thereby providing an elongate passageway between the twisted filaments. The exposed surfaces of the twisted filaments are coated with a suitable material for sealing the tube along its entire length.
REFERENCES:
patent: 7063 (1876-04-01), Preston
patent: 1972523 (1934-09-01), Kennedy
patent: 2366853 (1945-01-01), Greene
patent: 2755535 (1956-07-01), Schoenberger
patent: 3205913 (1965-09-01), Ehlers
patent: 3474703 (1969-10-01), Davis et al.
Ciarlante Anthony V.
Goldstein Herbert
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