Abstract: The present invention relates to a method and apparatus for analyzing a blood or other biological fluid sample in a quiescent state, whereby particulate constituents of biological samples that contain sparse populations of interesting cellular species can be enumerated and inspected using an optical scanning instrument. Specifically, this invention relates to a method and apparatus for obtaining increased cellular or particulate concentrations within the use of said optical scanning method.

Abstract: The present invention relates to a method and apparatus for analyzing a blood or other biological fluid sample in a quiescent state without the need for additional diluting reagents or fluid streams passing through the apparatus during the analytic process, whereby particulate constituents of biological samples can be enumerated and inspected using an optical scanning instrument. Specifically, this invention relates to a method and apparatus for obtaining decreased cellular or particulate concentrations within the use of this system.

Abstract: The present invention relates to a method and apparatus for analyzing a blood or other biological fluid sample in a quiescent state, whereby particulate constituents of biological samples that contain sparse populations of interesting cellular species can be enumerated and inspected using an optical scanning instrument. Specifically, this invention relates to a method and apparatus for obtaining increased cellular or particulate concentrations within the use of said optical scanning method.

Abstract: The present invention relates to the field of diagnostics by means of microscopic sample analysis, and specifically relates to a method and apparatus for preparing thin microscopic samples of liquids, and in particular monolayers of red blood cells.

Abstract: The present invention relates to a method and apparatus for analyzing a blood or other biological fluid sample in a quiescent state, whereby particulate constituents of biological samples that contain sparse populations of interesting cellular species can be enumerated and inspected using an optical scanning instrument. Specifically, this invention relates to a method and apparatus for obtaining increased cellular or particulate concentrations within the use of said optical scanning method.

Abstract: The present invention relates to the field of diagnostics by means of microscopic sample analysis, and specifically relates to a method and apparatus for preparing thin microscopic samples of liquids, and in particular monolayers of red blood cells.

Abstract: A small filter cartridge is particularly adapted to be attached to the neck of a conventional plastic soft drink bottle to filter contaminated water contained in the bottle by passing the water through the filter as it is discharged from the bottle. The flexible bottle walls are squeezed to pressurize the water and facilitate flow through the filter element. The filter includes a uniquely positioned check valve which allows pressure equalization of the bottle interior in a simple and efficient manner. The filter is attached directly to the neck of the bottle and embodiments are disclosed in which the element is inserted completely within the bottle and mounted entirely outside the bottle.

Abstract: The present invention provides an apparatus and method to determine individual red blood cell shape within a flow cytometric aperture. Cell shape is determined by measuring the asymmetry of a light scatter pattern produced by laser illumination of the cell within the aperture by light scatter detectors which collect light from specific angular regions of light scatter, and analyzing the asymmetry of the light scatter patters to determine the individual red blood cell shape. Embodiments of the invention further provide for the determination of red blood cell shape by measuring the asymmetry of a light scatter pattern and measuring electrical resistance of the red blood cell.

Abstract: The transmission, rotor and upper controls of a helicopter are supported on a roll housing mounted for pivotal rotation about the roll axis and on a pitch housing carried on the roll housing for pivotal rotation about the pitch axis. The roll housing carries a lower ring gear which meshes with an input shaft driven by an engine. The pitch housing carries side pinions, which mesh with the lower ring gear, and an upper ring gear, which meshes with the side pinions. A planetary gearset located in the upper transmissions cover includes a sun gear carried on the upper ring gear, a planet pinion carrier driveably connected to an output shaft, a set of planet pinions meshing with the sun gear and a stationary ring gear meshing with the planet pinions. The output shaft drives the rotor, rotor blades and rotating controls. Dampers restrain pivotal movement of the roll housing and pitch housing and pitch housing with respect to the fuselage.