Apparatus and method for variably restricting flow in a pressurized dispensing system
US6325255A · kind A · utility
11Cited by
21References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2000 |
| Grant date | Dec 4, 2001 |
| Priority date | — |
| Expiry date | Mar 24, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB67D1/1466
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
In a fluid flow restrictor, the amount of fluid flow restriction increases in response to higher dispensing system pressures and decreases in response to lower dispensing system pressures. In this manner, a relatively consistent flow rate of fluid being dispensed can be maintained regardless of fluctuations in system pressure. Variable resistance is provided by changing the length of the fluid flow path or by changing the cross-sectional area, and, thus, the volume of the fluid flow path, or by changing both the length and the cross-sectional area of the fluid flow path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.