Ergonomic systems which provide medical therapy, comfort and enhanced function are provided. Surfaces are provided with adjustable contour, transient force damping and temperature. The technologies are applied to footwear, seating surfaces an cryotherapy devices. The cooling and cryotherapy system employ an evaporator in close proximity to skin, and therefore employ methods to reduce risk of frostbite. Advanced control and power supply options are disclosed.

Ergonomic systems and methods providing intelligent adaptive surfaces and temperature control

A filter material and method for filtering leucocytes from a fraction of or whole human blood, comprises using a shape-sustaining laid textile web having a thickness of between about 2 millimeters to about 12 millimeters and a bulk density of about 0.05 to 0.4 g/cm3. The web has a plurality of interlocked, staple, textile fibers (5) with average deniers between about 0.05 and 0.75 and average lengths between about 3 millimeters and 15 millimeters. The textile fibers (5) are substantially un-iformly distributed in the web so as to form a matrix of the textile fibers (5) with spaces (7) between adjacent interstices (6) of interlocked fibers (5). A plurality of fibrillated particles (10) of a polymeric material, e.g. a textile fiber material, having a surface area of between 5 and 60 square meters per gram are substantially disposed within the spaces (7) of the matrix.

Blood filter and method of filtration

The present invention discloses a manufacturing process to produce high purity 1234yf from 245eb, which preferably includes the removal of impurities present in 245eb raw material, the dehydrofluorination of 245eb, and the removal of impurities present in final crude product. The disclosed manufacturing process allows the production of a 1234yf product with lower the levels of 1225ye and/or trifluoropropene, preferably in amounts of less than about 500, and 50 ppm, respectively.

Process for producing 2,3,3,3-tetrafluoropropene

A method for controlling footwear, comprising cushioning a transient force during use of the footwear at a first period of a gait cycle, storing energy from said cushioning, and releasing the stored energy during use of the footwear at a second period of the gait cycle, and after said transient force has subsided. The control can be electronic, mechanical or hydraulic, and is preferably dependent on a sensed gait cycle phase. The control may be adaptive to the user or the use of the footwear. The stored energy can be used to assist in locomotion, to generate electrical energy, to drive a heat pump, or simply dissipated.

Adaptively controlled footwear

Patterned conducting polymer surfaces exhibiting excellent properties may be prepared by: (a) forming a surface of a conducting polymer on a surface of a substrate; (b) forming a surface of a blocking material on said surface of said conducting polymer in a pattern-wise fashion, to obtain a first patterned surface containing regions of exposed conducting polymer and regions of blocking material; (c) treating said first patterned surface with an agent which: (i) removes said conducting polymer from said regions of exposed conducting polymer; (ii) decreases the conductivity of said conducting polymer in said regions of exposed conducting polymer; or (iii) increases the conductivity of said conducting polymer in said regions of exposed conducting polymer; and (d) removing said blocking material to obtain a second patterned surface containing an exposed pattern of conducting polymer.

Patterned conducting polymer surfaces and process for preparing the same and devices containing the same

Azeotrope-like compositions comprising 1,1-dichloro-1-fluoroethane and methanol are stable and have utility as degreasing agents and as solvents in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards.

Azeotrope-like compositions of 1,1-dichloro-1-fluoroethane and methanol

Azeotrope-like compositions comprising pentafluoroethane; 1,1,1-trifluoroethane; and chlorodifluoromethane are stable and have utility as refrigerants for heating and cooling.

Azeotrope-like compositions of pentafluoroethane; 1,1,1-trifluoroethane; and chlorodifluoromethane

Azeotrope-like compositions comprising 1,1-dichloro-1-fluoroethane and ethanol are stable and have utility as degreasing agents and as solvents in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards.

Azeotrope-like compositions of 1,1-dichloro-1-fluoroethane and ethanol

Azeotrope-like compositions comprising pentafluoroethane and 1,1,1-trifluoroethane are stable and have utility as refrigerants for heating and cooling.

Azeotrope-like compositions of pentafluoroethane and 1,1,1-trifluoroethane

Azeotrope-like compositions comprising trifluoromethane and carbon dioxide or trifluromethane, hexafluoroethane and carbon dioxide are stable and have utility as refrigerants for heating and cooling as well as fire extinguishing compositions.

Earl A. E. Lund

Papers

Azeotrope-like compositions of 1,1-dichloro-1-fluoroethane and methanol

Azeotrope-like compositions of pentafluoroethane; 1,1,1-trifluoroethane; and chlorodifluoromethane

Azeotrope-like compositions of 1,1-dichloro-1-fluoroethane and ethanol

Azeotrope-like compositions of pentafluoroethane and 1,1,1-trifluoroethane

Azeotrope-like compositions of trifluoromethane and carbon dioxide or trifluoromethane hexafluoroethane and carbon dioxide