FIELD: packing.
SUBSTANCE: proposed threaded sealing unit for wide-neck vessel has vessel hole and cover for hole. Said cover has base, skirt and first thread on hole. First thread has four or more first threaded sections. Second thread on inner surface of cover skirt has four or more second threaded sections. First and second threads are formed to provide fastening, separation and re-fastening of cover on hole in sealing position by rotating cover on hole. First threaded sections are shorter than second threaded sections. Each of second threaded sections consists of one or more projecting parts spaced over circumference, each part passing over circumference around cover skirt by not more than 60°. Vessel should be preferably drinking vessel, such as cup or glass.
EFFECT: improved convenience in use.
23 cl, 3 dwg
Title | Year | Author | Number |
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Authors
Dates
2007-09-27—Published
2002-11-19—Filed