Self-closing filter
US9527353B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2014 |
| Grant date | Dec 27, 2016 |
| Priority date | — |
| Expiry date | Dec 15, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2253/102
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A self-closing filter includes a housing to be attached to a sidewall of a self-inflating pneumatic tire. The housing includes a cavity to be in fluid communication with an atmospheric air inlet of a pneumatic control valve for the self-inflating tire. The self-closing filter further includes a filtration media to block contaminants from entering the cavity while allowing atmospheric air to be drawn through the filtration media into the cavity by a pump of the self-inflating tire. The self-closing filter still further includes a valve attached to the housing. The valve is selectively actuatable to an open state and to a closed state. The filtration media is exposed to an atmosphere impinging upon the tire when the valve is in the open state. The closed state is to prevent exposure of the filtration media to the contaminants when the valve is in the closed state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.