Two layer pack structure with offset seams
US4648121A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 27, 1981 |
| Grant date | Mar 3, 1987 |
| Priority date | — |
| Expiry date | Apr 27, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA45F3/04
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A backpack or transport bag including an outer pack structure of pliable material, preferably treated on one side with a water resistant coating, and including a number of seams or other perforations therethrough to attach straps, pockets, etc., the outer pack structure including closure means to close an opening defined therein, and an inner bag structure of a shape complementary to the outer pack structure and also of a pliable material coated on one side thereof with a water resistant material, the inner bag means including complementary upper closure means to attach to and function with the closure means of the outer pack, the inner bag and the outer pack preferably having seams at differing locations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.