Seal for self-aligning bearing
AssigneeEmerson Electric Co.
InventorErwin R. Carrigan
Life of this patent
Estimating the term…
Abstract
Sealing apparatus for a self-aligning bearing having a one-piece housing comprising three annular members on each side of the bearing, two of which members are axially assembled and fixed in the housing, the third annular member of each trio being axially assembled on the inner bearing race for rotation therewith and extending axially and radially between the other two, the three annular members each having axially and radially extending walls spaced from and coextending with axially and radially extending walls of the other two to form a tortuous path.
Claims8
In a free-running bearing seal axially assembled in an annular space between a journalled shaft and a bearing housing, comprising:
- a first annular member of channel form in cross section having a radially extending web portion and an axially extending flange at each end thereof,
- a second annular member of channel form in cross section having a shorter radially extending web portion and an axially extending flange at each end thereof,
- said first and second members being arranged with their radial web portions coextending, with their flanges extending toward each other, and with their flanges at one end in axial alignment, whereby said first and second members together have the form in cross section of a block letter "G,"
- a third annular member of generally block letter "S" form in cross section has first and second outer oppositely extending axial portions, an intermediate axial portion, a first radially extending portion connecting said intermediate axial portion with said first outer axial portion, and a second radially extending portion connecting said intermediate and second outer axial portions,
- said third member having its first radial portion positioned between and coextending with said radially extending web portions of said first and second members, with its intermediate axial portion lying between and coextending with said flange portions at the said other ends of said first and second members, with its first outer axial portion lying between the flanges of said second member and extending to a free end toward the web portion of said second member, with its second outer and intermediate axial portions lying on opposite side of and coextending with said flange at the said other end of said first member, and
- said radially and axially coextending portions of said members being spaced and the free ends of said axially extending portions being spaced from adjacent radially extending portions to permit free relative rotation between said first said second members and said third member.
Dependencies are inferred from the claim text.