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US 5,687,973 AGranted
Dust seal for pinion bearing housing
AssigneeRockwell Heavy Vehicle Systems, Inc.
InventorMalcolm F. Ruppert, Jr.
Life of this patent
Estimating the term…
Abstract
A seal is provided on a slinger for a pinion shaft in an axle housing. The seal provides sealing contact at a location between the bearing cage and the slinger. The slinger prevents relatively large dirt, stones, and debris particles from reaching an inner oil seal. The seal on the slinger prevents smaller particles from reaching the oil seal. Several embodiments of the seal are disclosed.
Claims18
A pinion gear and housing arrangement comprising:
- a pinion gear having a shaft and gear teeth at an inner end of said shaft;
- a bearing housing having an opening at an outer end, said pinion shaft extending into said opening, and said gear teeth being received within said pinion housing;
- an oil seal placed between an outer diameter of said pinion shaft and an inner diameter of said housing adjacent said outer end and in said opening;
- a slinger positioned axially outwardly of said opening and secured to rotate with said pinion shaft, and
- a slinger seal secured to rotate with said slinger, and extending radially inwardly from said slinger to contact said bearing housing.
2 more elements
A pinion gear and housing arrangement comprising:
- a pinion gear having a shaft and gear teeth at an inner end of said shaft;
- a bearing housing having an opening at an outer end, said pinion shaft extending into said opening, and said gear teeth being received within said pinion housing;
- an oil seal placed between an outer diameter of said pinion shaft and an inner diameter of said housing adjacent said outer end and in said opening;
- a slinger positioned axially outwardly of said opening and having a shroud extending over a portion of said housing defining said opening, said slinger secured to rotate with said pinion shaft;
- a slinger seal secured to rotate with said slinger and extending radially inwardly from said slinger to contact an outer peripheral surface of said housing;
- and
- said slinger seal extends radially inwardly for a first distance such that an inner portion of said seal defines an inner diameter, said inner diameter being less than an outer diameter of said housing on which said seal is to contact, such that said seal is deformed when received on said housing, said slinger seal contacting said outer peripheral surface of said housing at a contact position spaced from said outer end and an inner lip of said seal being deformed toward said outer end from said contact position.
4 more elements
A slinger for use on a pinion shaft comprising:
- a radially outwardly extending first portion, and an axially extending shroud portion extending axially and radially from said radially extending portion, said shroud portion having a seal adjacent an axially extreme end, said seal extending radially inwardly from said shroud portion;
- and
- said seal being provided with a plurality of extension extending from away from a main seal body, said extensions providing air flow when said seal is rotated.
Dependencies are inferred from the claim text.