Patent ID: 6746018
Filing Date: 2004-06-08
Classification: F16J

Abstract:
A speed reducer comprising:a housing having an aperture, an outside of the housing defining an external environment and an inside of the housing defining an internal environment, the aperture passing from the external environment to the internal environment; a shaft passing through the aperture; a multiple shaft seal arrangement positioned between an outer diameter of the shaft and an inside diameter of the aperture, the multiple shaft seal arrangement comprising: a disc mounted and rotatably affixed to the outer diameter of the shaft such that the disc rotates with the shaft, the disc extending radially from the shaft to a terminating position spaced from the inside diameter of the aperture, the disc having a first side facing the external environment and a second side oppositely disposed from the first side; a face seal having a face seal lip and being mounted and rotatably affixed to the second side of the disc, wherein the face seal rotates with the disc and wherein the face seal lip is radially spaced further from the inside diameter of the aperture than the terminating position; a second disc mounted to the inside diameter of the aperture and extending radially toward the shaft, the second disc spaced from the outside diameter of the shaft, the face seal pressed against the second disc; and an oil seal mounted to the second disc which is pressed against the outer diameter of the shaft.