Filter cap
US5549723A · kind A · utility
Inventor
Key dates
| Filing date | Aug 31, 1994 |
| Grant date | Aug 27, 1996 |
| Priority date | — |
| Expiry date | Aug 31, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2271/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention disclosed here is a filter cap device for releasably mounting large filters to a barrier wall. The filter cap has an oversize radius overlapping a filter opening in the wall. A plurality of hand-operated outboard locking devices releasably connect the cap to the wall. Likewise, a plurality of hand-operated inboard locking devices releasably connect the cap to the filter. The cap has a central opening which defines an air passageway from the filter through the wall. When it is desired to replace a filter, the filter cap and filter can be removed from the opening as a single unit, followed by disconnecting the used filter from the filter cap. A replacement filter is then attached to the cap and the entire unit is reinstalled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.