Dual Hardness Labyrinth Seal
AssigneeGMN Bearing USA
InventorAndrew Robbins
Life of this patent
Estimating the term…
Abstract
A labyrinth seal may include an outer labyrinth seal portion, an inner labyrinth seal portion and an exterior portion. The outer labyrinth seal portion and the inner labyrinth seal portion may have a first hardness value. The inner labyrinth seal portion may be substantially coaxial with the outer labyrinth seal portion. The outer labyrinth seal portion may be interlocked to the inner labyrinth seal portion in three geometric axes. The exterior portion may have a second hardness value and may have a connection with an outer surface of the outer labyrinth seal portion. An interior portion may be connected to an outer surface of the inner labyrinth seal portion and may have the second hardness value. The second hardness value may be a lower durometer value than a durometer value of the first hardness value.
Claims20
A labyrinth seal, comprising:
- an outer labyrinth seal portion having a first hardness value;
- an inner labyrinth seal portion having the first hardness value and disposed substantially coaxial with the outer labyrinth seal portion, wherein the inner labyrinth seal portion is not in contact with the outer labyrinth seal portion, and wherein the outer labyrinth seal portion is interlocked to the inner labyrinth seal portion in three geometric axes;
- and
- an exterior portion having a second hardness value, the exterior portion having a connection with an outer diameter of the outer labyrinth seal portion.
A high precision machine, comprising:
- a spindle;
- and
- a labyrinth seal connected to the spindle, the labyrinth seal comprising:
- an outer labyrinth seal portion having a first hardness value;
- an inner labyrinth seal portion having the first hardness value and disposed substantially coaxial with the outer labyrinth seal portion, wherein the inner labyrinth seal portion is contactless with respect to the outer labyrinth seal portion, and wherein the outer labyrinth seal portion is interlocked to the inner labyrinth seal portion in three geometric axes;
- and
- an exterior portion having a second hardness value, the exterior portion having a connection with an outer diameter of the outer labyrinth seal portion.
A low precision machine, comprising:
- a labyrinth seal, the labyrinth seal including:
- an outer labyrinth seal portion having a first hardness value;
- an inner labyrinth seal portion having the first hardness value and disposed substantially coaxial with the outer labyrinth seal portion, wherein the inner labyrinth seal portion is not in contact with the outer labyrinth seal portion, and wherein the outer labyrinth seal portion is interlocked to the inner labyrinth seal portion in three geometric axes;
- and
- an exterior portion having a second hardness value, the exterior portion having a connection with an outer diameter of the outer labyrinth seal portion;
- wherein the low precision machine is selected from the group consisting of a hydraulic pump, a motor, and a generator.
Dependencies are inferred from the claim text.