Hubcap with vented closure
US5752746A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 15, 1995 |
| Grant date | May 19, 1998 |
| Priority date | — |
| Expiry date | Dec 15, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60B7/00
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A hubcap attached to a wheel wherein a chamber is formed between the hubcap and the wheel for housing a lubricating fluid for the associated wheel bearings. A vent passage extending through the hubcap is provided for relieving the pressure formed in the chamber. A first one way valve is positioned to cover the vent passage for allowing a flow of gases to exit the vent passage while preventing liquids and other contaminants from entering the vent passage. A porous material is mounted across an air inlet passage extending through the hubcap for allowing air to enter the chamber. A second one way valve is mounted across the air inlet passage between the chamber and the porous material to shield the outer surface of the porous material from exposure to lubricating fluid from the chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.