Compact cooling pump especially for a vehicle has integral clutch and brake ring to selectively connect to drive shaft

摘要

A compact cooling pump, e.g. a water pump for a vehicle, has a pump wheel (2) inside a compact housing and connected to a drive shaft (3) via a clutch (7) and a brake ring (20, 21). The clutch operates axially to disengage the drive during cold starting. The brake action is operated by an external shaft (19), e.g. to a vacuum switch.