Canister with venting holes for containing a particulate-type product
US6261615A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1999 |
| Grant date | Jul 17, 2001 |
| Priority date | — |
| Expiry date | Jul 1, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2205/00
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A canister for containing a particulate-type product. The canister includes a canister body and a plurality of microholes formed in the canister body. Other than the plurality of microholes, the canister body is hermetically sealed. In this regard, the canister body defines an internal storage region configured to contain a particulate-type product. The plurality of microholes are sized to allow passage of air from the internal storage region, as well as to limit passage of the particulate-type product. During use, a decrease in atmospheric pressure applied to the canister, such as during shipping, results in air being vented from the internal storage region via the plurality of microholes. Due to this air flow, an internal pressure of the canister body maintains substantial equilibrium with atmospheric pressure such that the canister body will not expand.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.