Resources Contact Us Home Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE     Activity surfaces Image Number 17 for United States Patent #7090586. An apparatus for an a method of closing a fixed gap in an activity surface such as a turfed race-track is described. The apparatus comprises a movable turf tray having an upper surface with the same characteristics as the activity surface and means for guiding the tray into the gap so as to wedge the tray releasably in the gap and thereby to provide a substantially continuous activity surface. The apparatus can be used to provide a reconfigurable racetrack crossing with the permanent road gap in the racetrack being closeable by means of the movable turf tray. Overlapping edges of the turf tray provide a weight wedging action which provides reliable pressure joins. This also has application for creating reconfigurable turfed activity surfaces such as are used in sports stadia and the like.       Recently Added Patents Methods for etching carbon nano-tube films for use in non-volatile memories Ferroeletret multilayer composite and method for producing a ferroelectret multilayer composite with parallel tubular channels Apparatus for positioning a device Brush holder assemblies Method of manufacturing semiconductor device Conditioned medical testing Navigable website analysis engine   Randomly Featured Patents Rubber stopper for waterproof connector and waterproof connector Container with captive cap and internally valved closure and positive closure seals Driver circuit, with low idle power consumption, for an attachment unit interface Reactive melt mixing process for preparing cross-linked toner resins and toners therefrom Dynamic particulate observation apparatus Rose plant `Auswonder` Data writing with plasmon resonator Low-voltage rail-to-rail operational amplifier Communication apparatus, a communication system and a communication method Elastic plug assembly for medical device © 2006-2008 PatentGenius. All Rights Reserved.