Metallic labyrinth seal
AssigneeJM Clipper Corporation
InventorGeorge Fedorovich
Life of this patent
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Abstract
A two-piece interlocked labyrinth seal device for providing a seal between a housing and a shaft formed of two ring members, specifically a rotor and stator, connected to each other by a plastically deforming unitizing element. The rotor further includes one or a series of protrusions and recesses for providing a tortuous passage for fluid travel within the seal device. The system can be used on rotating shafts, rotating bores or as a baffle and has improved oil retention and water exclusion properties.
Claims31
A labyrinth seal device, comprising:
- a stator;
- a rotor being rotatable with respect to said stator;
- a first sealing element for providing a seal between said stator and a housing, and a second sealing element for providing a seal between said rotor and a shaft;
- and
- an internally positioned plastically deformable unitizing element adapted to interconnect said stator and rotor such that an axial play greater than zero is maintained between said stator and rotor.
A sealed system having an interconnected labyrinth seal device, comprising:
- a housing;
- a shaft extending through said housing and being rotatable relative to said housing;
- a stator;
- a first sealing element for providing a seal between said stator and said housing;
- a rotor non-rotatable relative to said shaft;
- a second sealing element for providing a seal between said rotor and said shaft;
- and
- an internally positioned plastically deformable unitizing element adapted to interconnect said stator and rotor such that an axial play greater than zero is maintained between said stator and rotor.
A method of assembling an interconnected labyrinth seal device, said method comprising the steps of:
- providing a first ring member;
- providing a second ring member, one of said ring members having a recess and the other having a unitizing element;
- providing a first sealing element for creating a seal between said first member and a housing;
- providing a second sealing element for creating a seal between said second member and a shaft;
- positioning said unitizing element against one of said ring members;
- and
- pressing said ring members together such that said unitizing element plastically deforms into said recess thereby interconnecting said ring members.
Dependencies are inferred from the claim text.