Patent ID: 8205526
Filing Date: 2012-06-26
Classification: B02C,Y10T

Abstract:
1. A pressurized hub system comprising: a pressure switch and solenoid valve for controlling pressurized air; a first hub having bearings that are rotatably securable to an axle with air tight seals between said first hub and said axle, a second hub having bearing that are rotatably securable to said axle with air tight seals between said second hub and said axle, said seals forming a closed air space between said first and second hubs; and a pneumatic chamber in at least one said hub which is coaxially disposed within said axle having an inlet adapted for fluidly coupling to said pressurized air and an outlet coupled to said closed air space, a source of pressurized air maintaining between 1 psi and 30 psi in said closed air space.