Abstract: Provided herein is technology relating to polymerization and producing polymers and particularly, but not exclusively, to methods, systems, and compositions for producing articles using three-dimensional printing and for improving control of polymerization using a polymerization photoinhibitor having fast back reaction kinetics such as hexaarylbiimidazole compounds and bridged hexaarylbiimidazole compounds.

Abstract: An apparatus for controlling fluid flow through a fluid flow meter comprises a meter coupling. The meter coupling includes a housing that has a valve, a drive assembly coupled to the valve, processing circuitry configured to instruct the drive assembly to transition the valve between an at least partially open position and an at least partially closed position, and an internal power supply configured to supply power to at least one of the processing circuitry and drive assembly.

Abstract: Embodiments of the present invention provide a hinge nut apparatus for a meter coupling. In an embodiment of the invention, the hinge nut includes at least two portions attached to each other by a hinge pin adjacent a distal end of each portion and the two portions are configured to be moved between an open position and a closed position. The closed position forms an outer surface and an opening forming an inner surface. The inner surface includes a first interior diameter adjacent a distal end of the opening and a second interior diameter adjacent the first interior diameter. The second interior diameter is greater than the first interior diameter and forms a lip and at least a portion of the second interior diameter includes threading.

Abstract: An embodiment of a bonding jumper systems can include one bonding jumper comprising an electroconductive material. The bonding jumper can be a member comprising an inlet end and an outlet end. The at least one bonding juniper can be configured to be mechanically coupled to a water meter body. The water meter can comprise an inlet and outlet that both comprise an electroconductive fitting. The inlet end is mechanically coupled to the inlet to initiate an electrical coupling and the outlet end is mechanically coupled to the outlet to complete the electrical coupling. The bonding jumper system can further include a cover configured to encapsulate the meter body and the at least one bonding jumper.

Abstract: Disclosed is a display device having a support frame, a front panel having a front surface and a back surface, coupled to the support frame; and a projection array for a rear projection on the back surface of the front panel. The projection array includes a plurality of horizontal video projection bars, wherein the horizontal light projection bars are vertically spaced apart, and wherein each of the horizontal light projection bars comprises a plurality of light projection sources. The display device further includes a power source and a video image controller for controlling the plurality of light projection sources.

Abstract: Disclosed is a display device having a support frame, a front panel having a front surface and a back surface, coupled to the support frame; and a projection array for a rear projection on the back surface of the front panel. The projection array includes a plurality of horizontal video projection bars, wherein the horizontal light projection bars are vertically spaced apart, and wherein each of the horizontal light projection bars comprises a plurality of light projection sources. The display device further includes a power source and a video image controller for controlling the plurality of light projection sources.

Abstract: A meter assembly includes: a meter housing including a top portion, the top portion including a mounting boss, the mounting boss including an engagement hook and protruding axially from a top surface of the top portion of the first housing; a register housing connected to the top portion of the first housing and configured to rotate with respect to the first housing about a rotation axis; and a retaining fastener connecting the second housing to the first housing, the retaining fastener including a one of a hook and a flange configured to engage the mounting boss and a one of a hook and a flange configured to engage the second housing.

Abstract: Disclosed is a pit lid antenna assembly including an antenna having an upper section and a lower section; and an antenna casing having a casing wall having an inner surface, the inner surface defining a first antenna slot, the first antenna slot sized to accept a portion of the lower section of the antenna.

Abstract: A meter assembly includes: a meter housing including a top portion, the top portion including a mounting boss, the mounting boss including an engagement hook and protruding axially from a top surface of the top portion of the first housing; a register housing connected to the top portion of the first housing and configured to rotate with respect to the first housing about a rotation axis; and a retaining fastener connecting the second housing to the first housing, the retaining fastener including a one of a hook and a flange configured to engage the mounting boss and a one of a hook and a flange configured to engage the second housing.

Abstract: Disclosed is a meter assembly including a first housing; a second housing; and a retaining fastener connecting the second housing to the first housing, the second housing adapted to rotate relative to the first housing. Also disclosed is a meter assembly including a housing; a linkage arm; and a retaining fastener, the retaining fastener connecting the linkage arm to the housing, the linkage arm adapted to rotate relative to the housing.

Abstract: Disclosed is a meter assembly including a first housing; a second housing; and a retaining fastener connecting the second housing to the first housing, the second housing adapted to rotate relative to the first housing. Also disclosed is a meter assembly including a housing; a linkage arm; and a retaining fastener, the retaining fastener connecting the linkage arm to the housing, the linkage arm adapted to rotate relative to the housing.

Abstract: Disclosed is a pit lid antenna assembly including an antenna having an upper section and a lower section; and an antenna casing having a casing wall having an inner surface, the inner surface defining a first antenna slot, the first antenna slot sized to accept a portion of the lower section of the antenna.

Abstract: The present invention relates to the field of the detection, analysis and/or determination of matter or particles suspended in fluid. In one particular form, the present invention relates to smoke detectors, which detect unwanted pyrolysis or combustion of material. In another form, the present invention relates to smoke detectors of the early detection type, and which may be applied to ventilation, air-conditioning or duct monitoring of a particular area. In yet another form, the present invention relates to surveillance monitoring, such as building, fire or security monitoring. In still another form, the present invention relates to environment monitoring, such as monitoring, detection and/or analysis of a fluid, zone, area and/or ambient environment, including commercial and industrial environments.

Abstract: The present invention relates to the field of the detection, analysis and/or determination of matter or particles suspended in fluid. In one particular form, the present invention relates to smoke detectors, which detect unwanted pyrolysis or combustion of material. In another form, the present invention relates to smoke detectors of the early detection type, and which may be applied to ventilation, air-conditioning or duct monitoring of a particular area. In yet another form, the present invention relates to surveillance monitoring, such as building, fire or security monitoring. In still another form, the present invention relates to environment monitoring, such as monitoring, detection and/or analysis of a fluid, zone, area and/or ambient environment, including commercial and industrial environments.

Abstract: The present invention relates to the detection of particles suspended in fluid particularly smoke detectors suitable for mounting on ducting for the early detection of smoke created by unwanted pyrolysis or combustion of materials in a protected area or fire zone to which the duct is connected. The present invention provides alternately illuminating a detection zone with one of either a first or a second illumination. The improvement embodied in the current invention is the ability to retain sensitivity to a wide range of particle sizes and also to discriminate between different kinds of smoke or dust according to particle size, whilst also achieving relatively long service life, small size, light weight and low cost.

Abstract: The present invention relates to the field of the detection, analysis and/or determination of matter or particles suspended in fluid. In one particular form, the present invention relates to smoke detectors, which detect unwanted pyrolysis or combustion of material. In another form, the present Invention relates to smoke detectors of the early detection type, and which may be applied to ventilation, air-conditioning or duct monitoring of a particular area. In yet another form, the present invention relates to surveillance monitoring, such as building, fire or security monitoring. in still another form, the present invention relates to environment monitoring, such as monitoring, detection and/or analysis of a fluid, zone, area and/or ambient environment, including commercial and Industrial environments.

Abstract: The present invention relates to the detection of particles suspended in fluid particularly smoke detectors suitable for mounting on ducting for the early detection of smoke created by unwanted pyrolysis or combustion of materials in a protected area or fire zone to which the duct is connected. The present invention provides alternately illuminating a detection zone with one of either a first or a second illumination. The improvement embodied in the current invention is the ability to retain sensitivity to a wide range of particle sizes and also to discriminate between different kinds of smoke or dust according to particle size, whilst also achieving relatively long service life, small size, light weight and low cost.

Abstract: A method of fabricating an optical waveguide grating having a plurality of grating lines of refractive index variation comprises the steps of: (i) repeatedly exposing a spatially periodic writing pattern onto a photosensitive optical waveguide: and (ii) moving the writing light pattern and/or the waveguide between successive exposures of the writing light pattern, so that each of at least a majority of the grating lines is generated by at least two exposures to different respective regions of the writing light pattern.

Abstract: A comestible product which includes inulin, a second component and a divalent zinc or copper. When the comestible product is a tablet, a pressed tablet, a lozenge, a hard candy or a chewy candy, the second component is a formentable carbohydrate which may, optionally, include a polyol. When the comestible product is a chewing gum the second component is a polyol, a formentable carbohydrate or mixtures thereof. The comestible product is useful in controlling breath malodor.

Abstract: A light transmitting device comprising or incorporating a broadband Bragg grating that is formed in the direction of light propagation with grating regions of alternatingly high and low refractive index. The grating regions are formed with periodicity P and are structured as to amplitude, periodicity and/or phase in a manner which varies periodically with a modulation period L>P. Also, either one or the other or both of the grating period P and the modulation period L is or are chirped over substantially the full extent of the grating. The grating exhibits a spectral response in which broad rcflection peaks appear at each side of a reflection peak centred on the Bragg wavelength and fall under an envelope determined by the Fourier transform of the periodic modulation function.