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US 2005/0045631 A1Published application
Pressure regulator for engine cooling system
AssigneeStant Manufacturing Inc.
InventorGary Dunkle
Life of this patent
Estimating the term…
Abstract
A cooling system apparatus includes a coolant tank, an overflow tank coupled to the coolant tank, and a pressure regulator. The pressure regulator regulates flow of fluid discharged from the coolant tank into the overflow tank.
Claims27
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, and
- 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.
A cooling system apparatus comprising
- a coolant tank,
- an overflow tank arranged to receive fluid discharged from the coolant tank,
- a pressure-relief valve member arranged normally to assume a closed position blocking flow of fluid discharged from the coolant tank into the overflow tank,
- a biasing spring arranged normally to apply a biasing force to urge the pressure-relief valve member to assume the closed position, and
- means for varying the biasing force applied by the biasing spring to one of lessen the biasing force applied by the biasing spring to maintain the pressure-relief valve member in the closed position so that a first pressure of fluid in the coolant tank is sufficient to move the pressure-relief valve member against the biasing force of the biasing spring to assume an opened position allowing flow of fluid from the coolant tank into the overflow tank and greaten the biasing force applied by the biasing spring to maintain the pressure-relief valve member in the closed position so that a greater second pressure of fluid in the coolant tank must be extant to move the pressure-relief valve member against the biasing force of the biasing spring to assume an opened position allowing flow of fluid from the coolant tank into the overflow tank.
2 more elements
A cooling system apparatus comprising
- a coolant tank,
- an overflow tank arranged to receive fluid discharged from the coolant tank,
- a pressure-relief valve member arranged normally to assume a closed position blocking flow of fluid discharged from the coolant tank into the overflow tank,
- a biasing spring arranged normally to apply a biasing force to urge the pressure-relief valve member to assume the closed position,
- a drive shaft mounted for controlled movement in a bore formed in the overflow tank, and
- a spring mount coupled to the drive shaft, located in the overflow tank, and arranged to engage an outer end of the biasing spring to lessen the biasing force applied by the biasing spring to maintain the pressure-relief valve member in the closed position in response to movement of the drive shaft in a first direction in the bore toward the coolant tank and to greaten the biasing force applied by the biasing spring to maintain the pressure-relief valve member in the closed position in response to movement of the drive shaft in an opposite second direction in the bore away from the coolant tank.
3 more elements
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, and
- 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 and a biasing spring associated with the pressure-relief valve member, the pressure-relief valve member and biasing spring being located in the interior region of the overflow tank.
A cooling system apparatus comprising
- a coolant tank,
- an overflow tank arranged to receive fluid discharged from the coolant tank, the overflow tank including a top wall and a stand-off coupled to the top wall and arranged to extend into an interior region formed in the overflow tank,
- a pressure-relief valve member located in the interior region of the overflow tank and arranged normally to assume a closed position blocking flow of fluid discharged from the coolant tank into the overflow tank, and
- a biasing spring located in the interior region of the overflow tank and arranged to engage the stand-off normally to apply a biasing force to urge the pressure-relief valve member to assume the closed position.
1 more element
Dependencies are inferred from the claim text.