Abstract: Disclosed is a pressurized internal oil management system, comprising an oil dam, at least one oil separator, at least one oil collection manifold, at least one oil pump, and one or more paths for returning the separated oil; said system integrated within the casing of a fluid displacement device to supply adequate lubrication regardless of orientations under zero to full gravity, and methods and applications related thereto. Fluid displacement devices useful herein include oil lubricated rotary or reciprocating machinery, such as compressors, expanders, pumps and engines, in the casing of which exists one or more drive mechanisms that can be utilized to operate the oil management system, in most cases without even increasing the size of the casing.

Abstract: Disclosed are medical devices comprising a coil, coated with a multi-layer coating system and possess the flexibility, lubricity and trackability desired in applications where such devices are utilized. The coating system comprises a non-hydrophilic polymer primer coat and a hydrophilic polymer topcoat. These coating materials do not comprise any cross-linkers or reactive functional groups, and do not require the use of a hazardous solvent. The multi-layer coating system is very thin; having a maximum dry thickness in the range of about 15 microns to about 40 microns. Also disclosed are methods for coating and using these medical devices. The coatings are applied at low temperatures, in an aqueous environment, and in such a way that the coil is coated discretely, without forming a thick layer between the coil portions. Such coating prevents substantial bridging between the loops of the coil, thus preventing the coil tip from being stiff or non-trackable.