Filter change indicator
US7137303B2 · kind B2 · utility
6Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2004 |
| Grant date | Nov 21, 2006 |
| Priority date | — |
| Expiry date | Sep 11, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D35/143
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A fluid system pressure indicator is adapted for use in fluid systems having a filter element. The fluid system force indicator includes a housing partitioned to be exposed to the fluid system to provide transmission of a mechanical force between these partitioned environments to indicate the fluid pressure. This exterior shape change is such that it can be identified through tactile means not requiring visual identification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.