Patent ID: 7216610
Filing Date: 2007-05-15
Classification: F01P

Abstract:
1. A cooling system apparatus comprising a coolant tank formed to include an interior region and a passageway opening into the interior region, an overflow tank coupled to coolant tank through the passageway and formed to include an interior region communicating with the passageway, a pressure regulator arranged normally to block flow of fluid between the interior regions of the coolant and overflow tanks via the passageway, the pressure regulator including a pressure-relief valve member, a biasing spring associated with the pressure-relief valve member, and a compression controller mounted for movement relative to the overflow tank to vary biasing force applied by the biasing spring to maintain the pressure-relief valve member in a closed position blocking flow of fluid between the interior regions of the coolant and overflow tanks via the passageway, and wherein the pressure-relief valve member, biasing spring, and at least a portion of the compression controller are located in the interior region of the overflow tank.