Sack with detachable hard case
US6629629B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 5, 2001 |
| Grant date | Oct 7, 2003 |
| Priority date | — |
| Expiry date | Jul 5, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA45C13/10
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The present invention disclose a sack used in an ordinary sack and a hard type sack selectively according to the existence of a hard case.The ordinary sack can be sagged easily when goods is packed into the sack because a material of the sack is usually a soft synthetic fiber. Such softness gives a non-elegant and uncomfortable to carry the ordinary sack. In more, carrying fragile goods in such a sack can make someone to be nervous to prevent unpredicted external impact. Usage of the hard type sack has an advantage to keep a shape without sagging when goods are packed in, and to protect the goods from any external impact, because a backside case is made of a hard material. However, disassembling the backside case from the hard type sack is not easy because the backside case is jointed with a back supporter by bolts and nuts method. In more, bolts are always required to re-assemble the backside case into the hard type sack after disassembling. The sack according to the present invention provide assembling and disassembling the hard case conveniently, and easy carrying a separated hard case, which results in satisfying some portions of various needs and favorites of purchasers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.