Abstract: Retroreflective article (10), e.g., in the form of a pavement marking, having raised, nonintegral protuberances (16) that exhibit good dry retroreflectivity and recover retroreflectivity quickly after exposure to water. The protuberances may comprise a thermoplastic polymer body and have at least two different portions. Partially embedded in the protuberances are different sets of optical elements (14) which are in optical association with a light scattering agent. The protuberances are disposed on top of a conformable base sheet (12).

Abstract: A silent communication system presents a plurality of color coded cards, each card corresponding to a mood of the user as set forth in writing on a separate master plan. First and second embodiments of the display devices are shown so that the user may select a color from a plurality of colors and display the same to third persons, the color selected corresponding to the user's mood. Colored cards, device and master plan cooperate to form a communication system which enables the user to initially communicate his/her mood to others so that subsequent, appropriate verbal communications can be initiated.

Abstract: A wear indicator is located on the head or frame of a disposable razor or razor cartridge, in close proximity to the shaving edge of the blade. The wear indicator comprises a mass of material that gradually wears away as the disposable razor or cartridge is used in shaving, the amount of material wearing away being correlated with the amount of wear on the blade edge to provide a visual indication of the relative wear on the blade. Preferably, the wear indicator comprises two strips of material, one atop the other, the upper strip wearing away to reveal the contrastingly-colored lower strip. Alternatively, the material may wear away to reveal indicia or lettering on the lower strip.

Abstract: An apparatus (14) for detecting carbon dioxide in exhaled gas is disclosed. The apparatus comprises an indicating element (10) for changing color when exposed to carbon dioxide and a carbon dioxide shield (12) for absorbing a predetermined level of carbon dioxide from the exhaled gas before exposing the indicating element (10) to the exhaled gas.

Abstract: A wind turbine is arranged to provide for a front torroidal plate mounted from and spaced relative to a rear solid plate coaxially securing a deflecting cone coextensively and coaxially between the front and rear plate, with a series of equally spaced arcuate impeller blades mounted adjacent a periphery of the front and rear plates exteriorly of the cone to direct air flow through the turbine plates from the cone structure. The impeller also has a fluidic rotation indicator. The indicator is a set of arcuate liquid chambers which contain two different fluids of different colors and specific gravities. When the impeller is stationary, the two different fluids separate, indicating two colors. However, when the impeller rotates, the two fluids mix and indicate a single third color.

Abstract: In a meter for an automobile comprising a meter case, a pointer driven by a meter drive unit, a dial plate having a display area and a graduations, characters and patterns display part formed on a base, the dial plate having a ground color providing a background to permit recognition of the position of the pointer, and an illumination lamp located on the rear side of the dial plate mounted in the meter case so as to illuminate the dial plate from the rear side or from the front side through a light guide member, at least one of the display area and the display part of the dial plate is formed by evaporation of a metal film permeable to light.

Abstract: A water management system for heat exchange devices is disclosed which includes an aqueous based heat exchange liquid containing dissolved corrosion inhibitors and a fluorescent dye, conduit means adapted to circulate the heat exchange liquid between a source of heat, such as an engine, and a cooling device, such as a radiator, a liquid or solid concentrate containing measured amounts of the corrosion inhibitors and the fluorescent dye packaged in defined unit quantities, and a comparator calibrated to provide a visual indication of the concentration of the corrosion inhibitors in the liquid and, if the concentration falls below an established level, the number of units that must be added to restore the established level.

Abstract: A mobile material handling machine includes a material handling element and an operator's control cab. A plate is pivotally attached to the material handling element in line with the operator's line of sight from the cab towards the element. The plate has first indicia on the edges thereof; second indicia on the top surface thereof; and third indicia on the bottom surface thereof. The first indicia is in line with the operator's line of sight when the material handling element is positioned at a predetermined angle relative to the operator's cab.

Abstract: Pressure relief detecting/alert apparatus for detecting the activation of pressure relief devices associated with fluid storage is disclosed comprising a cover adapted to move in response to a release of stored fluid, a tube assembly for containing a control fluid under pressure and capable of rupture upon movement of the cover, and means for detecting a decrease in control fluid pressure.

Abstract: In providing an adhesive connection or a seal using a thermoplastic adhesive for securing materials together, a thermochrome dye is added to the thermoplastic adhesive so that it provides a color change in the temperature range between the temperature where a satisfactory moistening effect is achieved and the temperature where the satisfactory moistening effect is no longer present.

Abstract: A sterilizable pouch is provided with first and second opposing webs which are initially sealed together except for a region defining an open mouth. At least one of the webs has a strip of adhesive adjacent the mouth with a peelable release strip superposed upon and adhering to the adhesive strip for masking the adhesive strip from external contact before the pouch is closed and sealed. The peelable release strip includes an indicator means for indicating its exposure to a predetermined sterilization condition. The indicator means has an initial appearance signifying that the indicator means has not been subjected to the predetermined sterilization condition and is adapted to change to a final appearance after exposure to the predetermined sterilization condition for indicating such exposure.

Abstract: A fibrous filter mat of which all or a part of the fibers are coated totally or at least in part with a mixture of at least two dye components which are insoluble in one another, one of said components being fat- and/or oil-soluble and of a color which contrasts with that of the fiber blend and/or of the other component, the other component being fat- and/or oil-insoluble. The mat is especially suited for kitchen exhaust hoods since entrapment of fats and oils causes a color change as the oil-soluble dye dissolves and spreads out.

Abstract: A water collection indicator device includes a cuplike collector telescopingly receiving a signal member, a spring biasing the signal member away from the collector, and an actuator having an arm engaging the signal to prevent movement of the signal member away from the collector and a float movable with rising water collected in the collector, the actuator being pivotally supported in the collector such that movement of the float pivots the arm to disengage the signal member and permit the spring to move the signal member away from the collector to produce a visual signal indicating the collection of a predetermined amount of water. The actuator arm has a series of vertically spaced teeth extending therefrom for engaging the signal member, and a pivot pin is carried by the actuator and adapted to be received in a plurality of vertically spaced detents in a support mounted in the collector to permit the water collection indicator device to be triggered at various predetermined water levels.