Wheel mounting for tire pressure adjustment system
US5203391A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 15, 1991 |
| Grant date | Apr 20, 1993 |
| Priority date | — |
| Expiry date | Mar 15, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C19/543
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A mounting for a wheel having a pneumatic tire includes a hub to which the wheel is attached, a spindle about which the hub and wheel rotate, and a pair of indirectly mounted tapered roller bearings between the spindle and hub. The end of the hub is closed by a seal carrier which is attached to the hub and an end cover which is attached to the carrier. The end cover forms one end of a sealed chamber that is at the end of the spindle. The opposite end of the chamber is closed by a seal which is carried by the seal carrier beyond the two tapered roller bearings. The seal has an elastomeric seal element which bears against a sealing surface that is, in effect, carried by the spindle. One passageway extends from a location on the spindle that is remote from the bearing, along the spindle to the chamber at the end of the spindle. Another passageway extends from the exterior of the hub through the end ring to the chamber. The former is connected to a source of pressurized air, whereas the latter is connected to the interior of the pneumatic tire. Thus, the mounting permits the transfer air to or from the tire while the wheel rotates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.