Fluid coupling for vehicle fan drive - has cast output member which houses stamped input member and reservoir casing with reed valve to control outlet flow

摘要

The viscous fluid coupling for a fan drive in an automotive vehicle includes a stamped sheet metal input member inside a cast metal output member. The output member has a fluid reservoir formed of a sheet metal stamping attached to a ledge. A movable reed valve permits fluid to flow from the reservoir to a working space between the input and output members. A rotatable support is mounted on the output member, the reed valve being mounted on the support. A thermostat rotates the support in response to changes in the temperature, the reed valve having an end portion movable across the passage means to open and close it.