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73results about How to "Small form" patented technology

Novel large-span assembly type hollow groined floor system

The invention discloses a novel large-span assembly type hollow groined floor system which is composed of a plurality of blocks of prefabricated floors capable of being spliced and concrete post-cast strips located between adjacent prefabricated floors. Each prefabricated floor comprises a top plate, a base plate, longitudinal ribbed beams and transverse ribbed beams, wherein the longitudinal ribbed beams and the transverse ribbed beams are arranged between the top plate and the base plate. The top plates and the base plates are parallel surface plates. The novel large-span assembly type hollow groined floor system effectively solves the problem of the traditional assembly type integrated floors of small span, poor rigidity and large concrete consumption. The concrete consumption at the connection positions of all the prefabricated floors is small, template consumption is small, and the prefabricated floors are few in shapes, convenient to construct, economical and practical. The integral floor system formed by assembling all the prefabricated floors is of a hollow groined structure and has the advantages of bidirectional force transfer, large rigidity, good shock resistance and small self weight and thickness. Light thermal insulation materials are filled in the hollow positions of the floor system so that the heat retaining property of the floor system is improved. Pipes can be arranged in the floor system in a penetrating mode without additional equipment layers, and therefore space is saved and storey clear height is increased.
Owner:SOUTHEAST UNIV

Projector

A projector includes a projection optical device that magnifies and projects image light and a projection position adjusting device that moves the projection optical device in a plane orthogonal to a projecting direction and adjusts a projection position of the projection optical device. The projection position adjusting device includes a fixed member fixed in the projector, a first moving plate that supports the projection optical device and moves in a first axial direction and a second axial direction orthogonal to each other in the plane orthogonal to the projecting direction, a second moving plate that is interposed between the fixed member and the first moving plate, engages with the first moving plate, and moves in the second axial direction together with the first moving plate, adjusting and driving units that move the first moving plate and the second moving plate, and plural coupling members that movably couple the first moving plate to the fixed member. A coupling through hole of a stepped shape, which has a diameter dimension on a side close to the first moving plate smaller than that on a side separated from the first moving plate and has a step, is formed in the fixed member. Each of the coupling members includes a connecting member that is formed in a stepped shape, which has a sectional area on the other end side smaller than that on the one end side and has steps, and the other end of which is connected to the first moving plate in a state in which the connecting member is inserted in the coupling through hole and an interposed member that is arranged between the step of the connecting member and the step of the coupling through hole, urges the step of the connecting member and the step of the coupling through hole in directions away from each other, and brings the first moving plate into contact with the fixed member.
Owner:SEIKO EPSON CORP

Burners and combustion apparatus for carbon nanomaterial production

The invention provides improved burners, combustion apparatus, and methods for carbon nanomaterial production. The burners of the invention provide sooting flames of fuel and oxidizing gases. The condensable products of combustion produced by the burners of this invention produce carbon nanomaterials including without limitation, soot, fullerenic soot, and fullerenes. The burners of the invention do not require premixing of the fuel and oxidizing gases and are suitable for use with low vapor pressure fuels such as those containing substantial amounts of polyaromatic hydrocarbons. The burners of the invention can operate with a hot (e.g., uncooled) burner surface and require little, if any, cooling or other forms of heat sinking. The burners of the invention comprise one or more refractory elements forming the outlet of the burner at which a flame can be established. The burners of the invention provide for improved flame stability, can be employed with a wider range of fuel/oxidizer (e.g., air) ratios and a wider range of gas velocities, and are generally more efficient than burners using water-cooled metal burner plates. The burners of the invention can also be operated to reduce the formation of undesirable soot deposits on the burner and on surfaces downstream of the burner.
Owner:FRONTIER CARBON CORP
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