Abstract: A door handle assembly includes a door operator having an operator portion and a shank extending from the operator portion. The door handle assembly also includes a housing with a base portion for mounting to the door and a bearing portion extending from the base portion. The housing houses a portion of a spindle that extends outwardly from the bearing portion to accept the shank of the door operator. The connections of the door operator with the spindle and the spindle to the housing are configured to reduce wobble in the door handle assembly.

Abstract: A device for monitoring pressure variations for mercury manometers including; a manometer tube with a column of mercury; at least two taps in the tube with one tap in the mercury column and the other above the column; a power supply interconnected between the taps; a resistance element extending between the taps in the mercury; and means for sensing the output voltage across the taps representative of the variations in the shunting effect on the resistance element of the mercury column as it rises and falls with pressure.

Abstract: The present invention provides a variety of thermal catalytic methods for the conversion of NO and other NO.sub.x compounds into environmentally compatible products such as molecular nitrogen, molecular oxygen, and carbon dioxide. The catalysts employed are able to remove NO in substantial percentage quantities over a wide temperature range of 0.degree.-1,000.degree. C. and a preferred temperature of 100.degree.-800.degree. C. both in the presence or in the absence of chemical reducing agents.

Abstract: A method is provided for the photopromoted solid-catalyzed decomposition of oxides of nitrogen such as nitric oxide which are major pollutants of air and the environment at large. By this method, oxides of nitrogen are decomposed into molecular nitrogen and molecular oxygen by reactive passage over a solid metal oxide catalyst at an elevated temperature under irradiation at wavelengths absorbable by the catalyst. In this manner, the major oxides of nitrogen pollutants originating in the exhaust gases produced by automobile engines, jet engines used in the propulsion of aircraft, gas-turbine power generators, and the combustion of fossil fuels generally are controlled and eliminated.

Abstract: A novel method of producing ammonia by the reduction of molecular nitrogen is provided using a solid metal oxide catalyst and an organic compound in aqueous medium. Pure gaseous nitrogen or air can be reduced in the dark without using any photoenergy or by a photoassisted reaction which uses solar and/or artificial photoenergy. Substantial yields of ammonia are obtained in the dark without the use of photoenergy while major enhancement in yields is obtained via the photoassisted reaction in comparison to presently known methods.

Abstract: A novel method of producing ammonia by the reduction of molecular nitrogen is provided using a solid metal oxide catalyst and an organic compound in aqueous medium. Pure gaseous nitrogen or air can be reduced in the dark without using any photoenergy or by a photoassisted reaction which uses solar and/or artificial photoenergy. Substantial yields of ammonia are obtained in the dark without the use of photoenergy while major enhancement in yields is obtained via the photoassisted reaction in comparison to presently known methods.

Abstract: A method for the light driven photocatalytic reduction of carbon dioxide or the bicarbonate ion to one or more compounds which comprises contacting certain metal compounds with the carbon dioxide and/or bicarbonate ion in the absence of separate physical electrolyte and electrodes, and conducting said contacting in the presence of a reducing agent such as water and light.

Abstract: A method for the light driven photocatalytic reduction of nitrogen to one or more compounds which comprises contacting certain metal oxides with nitrogen in the presence of a reducing agent such as water and in the absence of separate physical electrolyte and electrodes, and conducting said contacting in the presence of light.