Abstract: Medical device coatings are provided that simultaneously release a therapeutic agent at different rates from different portions of the medical device coating. In a first embodiment, medical device coatings are provided that include particles comprising a therapeutic agent with two or more different particles sizes within a single layer on a surface of the implantable device. In a second embodiment, medical device coatings are provided having a higher concentration of the therapeutic agent in a first region of the coating than in a second region of the coating. In a third embodiment, medical device coatings are provided that are formed by certain coating processes wherein the droplet size of a spray coating solution is changed during the coating process. These coating processes preferably include applying a solution comprising a therapeutic agent and a suitable solvent to a surface of an implantable medical device.

Abstract: A device using light emitting diodes directed at the patient as a light source for evaluating the appropriate color and density of filters or sunglasses for a patient is disclosed. The device may be used with additional filters or sunglasses to determine what filter or sunglass color and density will provide optimal vision for targets of varying spatial frequency. The device may also be used with additional filters of varying color and density to determine the health of the patient's ocular media.

Abstract: The method of using a tablet or coated tablet to introduce tint concentrate, UV absorbers, decolorant, conditioner and other optical chemistry into the dyebaths used for tinting plastic ophthalmic non-contact spectacle lenses and optical filters.

Abstract: The method of using a tablet or coated tablet to introduce tint concentrate, UV absorbers, decolorant, conditioner and other optical chemistry into the dyebaths used for tinting plastic ophthalmic non-contact spectacle lenses and optical filters.

Abstract: A thin elongated metal tube of a diameter less than the diameter of a inlet aperture within the top of a fuel tank and opening upwardly therefrom has a closed lower end inserted within the aperture. The metal tube is supported by a radially enlarged collar on the periphery of the metal tube intermediate of its ends, having a diameter in excess of the diameter of the fuel inlet aperture. Purge gas distribution openings are provided within the lower opposite end of the metal tube to distribute purge gas interiorly of the fuel storage tank. The weight of the distribution nozzle is set to balance axially upward lift forces developed during inert gas pressurization of the tank to prevent overpressurization and rupture of the tank when the gas pressurization of the tank reaches a predetermined level less than that causing rupture of the tank.

Abstract: A pedestal liner for a railway vehicle and method of making same are provided wherein such liner comprises a roughly U-shaped metal support comprising the main structural portion of the liner with the metal support having a bight and a pair of parallel legs and an insert is provided and carried by the metal support. The insert has a pair of roughly parallel members which have outer portions disposed outwardly of and parallel to the parallel legs of the support and the parallel members are comprised of antifriction material; and, the insert has an integral arm extending transverse its members with the arm also being comprised of antifriction material. The insert is adapted to be readily installed on and removed from the metal support and is held in position mainly by surface portions of the metal support to define the pedestal liner.

Abstract: A pedestal liner for a railway vehicle and method of making same are provided wherein such liner comprises a roughly U-shaped metal support comprising the main structural portion of the liner with the metal support having a bight and a pair of parallel legs and an insert is provided and carried by the metal support. The insert has a pair of roughly parallel members which have outer portions disposed outwardly of and parallel to the parallel legs of the support and the parallel members are comprised of antifriction material; and, the insert has an integral arm extending transverse its members with the arm also being comprised of antifriction material. The insert is adapted to be readily installed on and removed from the metal support and is held in position mainly by surface portions of the metal support to define the pedestal liner.

Abstract: A railway vehicle wear member is provided between a pair of relatively movable components of the railway vehicle, wherein such wear member has a rigid planar supporting portion used to support a polymeric antifriction wear material and an extension which comprises the planar supporting portion and is formed in position against one of the relatively movable components to hold the wear member against a particular movement relative to the one component.

Abstract: Dry cleaning of goods using perchloroethylene as solvent, in which during drying and deodorizing operations a flow of air is created by a fan in a closed circuit, vapour of the solvent is condensed solely by a refrigerated condenser, and during deodorizing the flow of air created by the fan is directed through a passage which restricts the flow, whereas during drying, the air is permitted to flow more freely, whereby during deodorizing the flow of air over the condenser is a minor fraction only of the flow of air through the goods during drying.