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US 5,209,502 AGranted
Dual lip seal and method of forming the seal
AssigneeMather Seal Company
InventorMichael A. Savoia
Life of this patent
Estimating the term…
Abstract
A dual lip shaft seal includes two sealing disks bonded directly to a radial wall of an annular metal case. The radial wall has an annular step, such that two separate mounting surfaces are formed for mounting the two disks. Each sealing disk is preferably formed of PTFE and heat-bonded to its respective mounting surface by an induction heater coil disposed in confronting relation to the radial wall of the metal case.
Claims6
A dual lip seal, comprising:
- an annular case that includes a radial wall having an axial step defining a radially outer mounting surface and a radially inner mounting surface respectively located in first and second axially-spaced radially-extending planes, said inner and outer mounting surfaces being defined on the same side of said radial wall;
- a first sealing disk seated on and bonded to said inner mounting surface;
- and
- a second sealing disk seated on and bonded to said outer mounting surface such that said second disk extends radially outwardly beyond said axial step.
1 more element
Dependencies are inferred from the claim text.