Fluid thermal compensation and containment for hydrodynamic bear

Details Fluid thermal compensation and containment for hydrodynamic bear Fluid thermal compensation and containment for hydrodynamic bear

1995-03-21

1996-06-11

Hannon, Thomas R.

Bearings

Rotary bearing

Fluid bearing

384100, 384278, 384905, F16C 3206, F16C 1722

Patent

active

055249850

ABSTRACT:
A combination of a fixed and moving surface, which may in a common example comprise a rotating journal facing a thrust plate, characterized in that both parts are made of materials or material combinations chosen such that, as the temperature rises, the gap between the bearing surfaces becomes smaller due to the different thermal expansion of the relevant parts.
The high coefficient expansion material includes a relatively shallow recess near the center of the bearing. This recess allows the expansion material to expand with temperature in order to decrease the gap and maintain the stiffness of the bearing. As the temperature rises, the fluid is forced out of the recess region and into the effective bearing gap thereby maintaining the overall stiffness of the bearing, which would otherwise fall as fluid viscosity drops.
In an alternative construction, one of the surfaces that is subject to relative axial rotation is designed to incorporate a sequence of materials along the axial length of the bearing such that an effective magnetic circuit is set up axially along the bearing. The lubricating fluid is a ferro fluid confined and effectively positioned in the bearing gap by the magnetic circuit.

REFERENCES:
patent: 2901300 (1959-08-01), Burr
patent: 4630943 (1986-12-01), Stahl et al.
patent: 5127744 (1992-07-01), White et al.

Affiliated with

Also associated with

Rating

Fluid thermal compensation and containment for hydrodynamic bear does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fluid thermal compensation and containment for hydrodynamic bear, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluid thermal compensation and containment for hydrodynamic bear will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-349101