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US 6,499,311 B2Granted
Double walled bottle
OwnerGautam K. Mahajaninventor
Life of this patent
Estimating the term…
Abstract
A preform and a blow molded container formed therefrom and having plural cavities or compartments for providing enhanced properties including vacuum containers for hot and cold product, or barrier materials including gases or layered material, improved creep resistance, use of lower cost and/or recycled materials, increased wall strength and aerosol properties.
Claims8
A one-piece, blow-molded container formed from thermoplastic material;
- said container having a closed lower end, an open upper end and including inner and outer walls spaced along their length and having smooth rounded end portions adjacent said lower end;
- said container including an inner compartment for containing a product therein and an outer compartment substantially enclosing said inner compartment, said inner compartment being formed by said inner wall, and said outer compartment being formed by said outer wall;
- said inner and outer walls being integrally merged with each other adjacent one end of said container for sealingly enclosing said outer compartment and tapering inwardly for forming a mouth for filling and emptying said inner compartment of said container, wherein said outer compartment is evacuated for forming a vacuum in said outer compartment, and including a third compartment formed of a third wall and enclosing said inner and outer compartments.
A one-piece, blow-molded container formed from thermoplastic material;
- said container having a closed lower end, an open upper end and including inner and outer walls spaced along their length and having smooth rounded end portions adjacent said lower end;
- said container including an inner compartment for containing a product therein and an outer compartment substantially enclosing said inner compartment, said inner compartment being formed by said inner wall, and said outer compartment being formed by said outer wall;
- said inner and outer walls being integrally merged with each other adjacent one end of said container for sealingly enclosing said outer compartment and tapering inwardly for forming a mouth for filling and emptying said inner compartment of said container, wherein said outer compartment is evacuated for forming a vacuum in said outer compartment.
Dependencies are inferred from the claim text.