Publication Date: 2015-Feb-18
The IP.com Prior Art Database
Page 01 of 2
This disclosure pertains to washers and bearings substantially made from polymeric materials, including but not limited to epoxies, phenolics, vinyl esters, poly esters, nylons, PEEK, PTFE etc. or to composites with a polymeric matrix. The disclosure presents a means of allowing these washers and bearings to lubricate themselves as wear occurs during normal operation. Doing so will reduce wear, especially in those instances where lubrication is absent or insufficient. The disclosure further presents the inclusion of an additional phase in the polymeric or polymeric composite comprised of microspheres containing a lubricant. The use of such lubricating microspheres is applicable to a wide range of mechanical systems including downhole oilfield tools.
This disclosure presents the addition of an additional phase to any polymer based component that can undergo wear. Such components include thrust washers in electric submersible pumps, rotational bearings, chevron seals etc. The disclosure also includes composite materials consisting of the polymeric matrix and a secondary phase of reinforcement. The disclosure also presents the inclusion of microspheres that are nanometer to micrometer size scale to the polymer during the processing and manufacturing of the component. These microcapsules (see Figure 1) consist of a thin shell made of a polymer and filled with a fluid. Several microcapsule manufacturing technologies exist, however the most...