Abstract: A device may provide a user with means to display an indication of the status of a government issued Terror Alert Level Warning and may be manufactured in a variety of forms and sizes to facilitate use in a range of environments. The method of display may be by any of various means such as a color code or an audio signal or other indicative means. A user may adjust a device manually or otherwise in order to indicate a desired Terror Alert Level Warning status reminder. A device may be manufactured and operated at any preferred level of technological performance. Embodiment may be in 3 dimensions as an object, or appliance, or on a screen in 2 dimensions as a virtual object.

Abstract: A bicycle signalling device (1) has flexible arms (4) carrying lamps (5). The arms (4) are mounted on a holder (2) having spring clamps (3) for snap engagement with the handlebars of a bicycle. A battery within the holder (2) powers the lamps (5) operable by switches (10, 12) to indicate whichever direction the cyclist intends to turn. The arms (4) can be bent in any direction by the cyclist to hold the lamps (5) in the best signalling position.

Abstract: A mixture of isocyanate-terminated polyurethane prepolymer made from an aliphatic diisocyanate and an approximately stoichiometric amount of a curing aromatic diamine is stored at least -5.degree. to -25.degree. C. until needed. It then is reheated to about 80.degree.-120.degree. C., at which temperature it becomes fluid and pourable. Within this temperature range the mixture has a useful life of at least about 30 minutes. Large batches of prepolymer-curing agent mixture can be prepared using existing processing equipment and techniques, analyzed and stored, then reheated and used for casting of very large articles.