Patent ID: 6513812
Filing Date: 2003-02-04
Classification: F16J

Abstract:
An assembly, comprising:a shaft having a longitudinal axis and being supported to rotate about said axis; a stationary member that surrounds at least a portion of said shaft such that a partially spaced interface exists between said shaft and said stationary member and said shaft rotates relative to said stationary member; a first seal supported proximate to said interface for rotation with said shaft including a plurality of turbine blade portions that create a fluid disturbance proximate to said interface as said shaft and said first seal rotate; and a second seal supported for remaining stationary with said stationary member so that said shaft rotates relative to said second seal, said second seal including a first end that is supported on a portion of said stationary member and a second end that includes a contact surface that contacts a peripheral surface on said shaft and a biasing member for biasing said contact surface toward said peripheral surface on said shaft, said second seal further including a generally flexible connecting portion extending in a radial direction relative to said shaft longitudinal axis between said first and said second ends on said second seal, and wherein said generally flexible connecting portion is bellows-like and flexes responsive to radial or axial movement of said shaft relative to said stationary member such that said contact surface remains in a desired contact with said peripheral surface on said shaft.