Unitized seal with unitizing joint remote from seal lip
AssigneeGarlock Inc.
InventorsEdward J. Messenger, George Fedorovich
Life of this patent
Estimating the term…
Abstract
A unitized seal includes a unitizing joint which is remotely spaced from a seal lip. The seal requires only two stampings with one elastomeric element bonded to one of the stampings. The remaining stamping forms a one piece wear sleeve having a first section with a wear surface which is engaged by a seal lip formed on the elastomeric element to provide a seal. A second section of this stamping extends angularly away from the wear surface and includes a terminal end which cooperates with the elastomeric element bearing stamping to form the unitizing joint.
Claims26
A unitized seal for providing a sealing action between first and second relatively movable members which includes no more than two unitary stampings, comprising a one piece wear sleeve adapted to be mounted on said first member, said wear sleeve including one of said unitary stampings which includes a first section having a wear surface provided thereon and a second section extending angularly away from said first section and terminating at a terminal end portion radially spaced from said wear surface, said terminal end portion including an inner surface, an outer surface extending in spaced relation to said inner surface, and a terminal end surface extending between said inner and outer surfaces, a one piece reinforcing shell adapted for assembly with said one piece wear sleeve and including sealing means secured to said one piece reinforcing shell and adapted to engage said wear surface when said reinforcing shell is assembled with said one piece wear sleeve, said reinforcing shell being the remaining unitary stamping and a part of said reinforcing shell forming a unitizing rollover portion for engagement with the terminal end portion of the second section of said wear sleeve to form therewith a unitizing joint remote from said wear surface, said rollover portion extending above and over said terminal end surface and along the outer surface of said terminal end portion, when said reinforcing shell is operatively assembled with said wear sleeve.
A unitized seal comprising, a one-piece wear sleeve having a cylindrical hub affixed to a first element of a pair of relatively movable elements and an annular deflector extending from said cylindrical hub, said annular deflector including a peripheral edge portion spaced radially from said cylindrical hub;
- and an annular unitary seal means slidably engaging said wear sleeve and including a one-piece reinforcing shell having a seal element affixed thereon, said seal element including a seal lip slidably engaging said cylindrical hub, said reinforcing shell being removably mounted on a second of said pair of relatively movable elements for disassembly therefrom and including a unitizing means located adjacent to said deflector peripheral edge portion and overlapping said deflector peripheral edge portion to form a unitizing joint, said unitizing means operating to prevent disassembly of said annular unitary seal means from said one-piece wear sleeve by engaging said deflector peripheral edge portion when the second of said pair of relatively movable members is disassembled from said reinforcing shell.
A unitized seal comprising, a one-piece wear sleeve having a cylindrical hub, a wear surface on said hub, and an annular deflector ring extending angularly from said cylindrical hub;
- a one-piece reinforcing shell having a unitary joint rollover means formed as a unitary part thereof and being located to cooperate with a portion of said deflector ring to form a unitizing joint and to engage said annular deflector ring at a point radially spaced from said cylindrical hub for preventing disassembly of said wear sleeve and said reinforcing shell;
- and an elastomeric element bonded to said reinforcing shell to form a sealing lip means slidably engaging said wear surface.
Dependencies are inferred from the claim text.