| 摘要 |
A modular unit for use with a fluid engaged spring released and a spring engaged fluid released fan clutch including an outer hollow hub which terminates in a radially extending annular friction flange with an annular flange connected to the outer hollow hub for connection with a live shaft. Also provided is an inner central hub mounted internally of said outer hub by means of a pair of bearings. The inner central hub terminates in an enlarged central portion which in turn terminates in a radially disposed circular wall portion terminating in a series of right angular flanges. An annular piston is provided which is slideably mounted on the enlarged central portion of the inner hub. A ring is provided having a series of fan blades extending therefrom and connected to the circular wall. The piston has a friction facing carried thereby. A rotary air union is carried by the circular wall with the enlarged central portion of the inner hub having a conduit leading from the air union to one side of the piston for causing the piston to move axially on the hub. Spring means is carried by the unit for urging the piston axially on the inner central hub. |
