公开(公告)号：US20210031571A1

公开(公告)日：2021-02-04

申请号：US16934759

申请日：2020-07-21

Applicant: Polaris Industries Inc.

Inventor： Robert PFEIFFER ,  Clinton M. JOHNSON ,  Francisco RODRIGUEZ

IPC: B60C23/00

Abstract: A tire deflation and inflation system for a vehicle. The system includes a unit bearing having a plurality of wheel flanges for mounting a wheel thereto. The unit bearing is configured to receive therein a portion of an axle of the vehicle. A wheel hub is mounted to the unit bearing. An air chamber is defined by the unit bearing. In response to positive air pressure generated by an air pressure source, air flows through the air chamber to a tire of the wheel mounted to the unit bearing to increase air pressure of the tire. In response to negative air pressure generated by venting the system to atmosphere, air is drawn out of the tire through the air chamber.