Resources Contact Us Home
High performance bearing pad for thrust bearing

Image Number 2 for United States Patent #5253939.

Cylindrical bearing pads are insertable into bearing pad recesses formed in a receiving surface of a bearing pad retainer in a load-carrying structure. The bearing pads have an insertion end which is fixed into the bearing pad recess by brazing or by interference fitting and a bearing end which projects from the receiving surface and terminates in a bearing face. The bearing face has a periphery which encircles the bearing face and an indentation having a perimeter formed centrally in the bearing face. An annular flattened area encircles the indentation forming an effective bearing contact area between an outer border of the flattened area and the perimeter of the indentation. When the indentation is filled with drilling fluid, lubrication is provided to an opposed bearing face of an opposing bearing pad. The indentation can be filled with drilling fluid or some other material with a higher heat storage capacity than polycrystalline diamond to provide temperature modulation for storing heat produced at the bearing face. When filled with a material, the indentation also serves to dissipate heat to reducing the length of a path of heat when the heat is conducted to cooler areas of the bearing face. Alternate embodiments include bearing faces with single or plural indentations of various shapes.

  Recently Added Patents
Systems and methods for tracking mobile terrestrial terminals for satellite communications
Optical multiplexer/demultiplexer
Emergency whistle, flashlight, and compass
Polymer compositions and nonwoven compositions prepared therefrom
Mobile terminal based on W-CDMA system having receive diversity function and system thereof
Pre and post-paid real time billing convergence system
Case for electronic device
  Randomly Featured Patents
Temperature responsive pressure relief apparatus and method
Laundry detergent compositions comprising zwitterionic polyamines and mid-chain branched surfactants
Missile launcher
Reference voltage generation circuit and reference current generation circuit
Ink-jet head and ink-jet printer having ink-jet head
Multi-threaded method and system for automated remote submission of jobs to mainframe and UNIX systems from the Windows.TM. platform
Enhanced two phase flow in heat transfer systems
Method for fabricating array substrate for X-ray detector
Dual pen system
Synergistic antioxidant compositions in management of hemorrhoids and other ano-rectal inflammatory conditions