Patent ID: 6601855
Filing Date: 2003-08-05
Classification: F16C,F16D,F16J

Abstract:
A universal joint seal for retaining lubricant therein comprising:a trunnion; a seal cooperating with said trunnion, said seal having an inner portion, an outer portion, and a flexible web portion between said inner portion and said outer portion, said inner portion contiguous with said trunnion; a bearing cup cooperating with said outer portion of said seal, said bearing cup spaced away from said trunnion and forming a cavity to contain lubricant therein; said flexible web portion of said seal permitting relative motion between said bearing cup and said trunnion; wherein said inner portion of said seal having a passage communicating with said cavity, said inner portion further having a lip contacting said trunnion so that in one predetermined condition said lip is arranged to provide a fluid barrier to the migration of lubricant from said passage and along said trunnion and in another predetermined condition said lip moves away from said trunnion in response to a moderate pressure level within whereby said lip preventing the formation of an excess pressure level in said cavity.