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61results about How to "Compact profile" patented technology

Systems and methods for controlling silica dust during hydraulic fracturing operations using an improved manifold

A system for controlling dust during hydraulic fracturing operations includes a manifold having a plurality of ports for capturing dust when negative air pressure is applied to the manifold. A support frame positions the manifold above a piece of hydraulic fracturing equipment receiving sand from a sand source.
Owner:SIERRA DUST CONTROL

Hand-held power tool with a suction device

A hand-held power tool inclLldes motor-driven drive shaft (4) for driving a working tool (9) and located in the tool housing (1), and a suction device (2) formed as a modular unit releasably connectable wYith the tool housing (1) and having a suction conduit (5), a receiving chamber (7), a precipitation device (8) located in the receiving chamber (7), and an impeller (6) driven by the drive shaft (4) of the power tool and located between the suction conduit (5) and the precipitation device (8).
Owner:HILTI AG

Filter assemblies and communication systems based thereon

A filter assembly (300) with a plurality of cavities serving as said waveguide resonators is presented. The cavities are arranged at least on two levels (x1, y1; x2, y2) of said filter assembly (300). Two or three molded filter parts (301, 302, 303) define the cavities, when the filter parts (301, 302, 303) are assembled. A first opening in a wall between a first and a second of cavity is provided. Said opening serves as capacitive junction between said first cavity and said second cavity. A second opening is provided in another wall between a third cavity and a fourth cavity, said opening serving as inductive junction. The filter parts (301, 302, 303) are at least partially covered by a metal layer.
Owner:HUBERSUHNER AG

Micro stage with 6 degrees of freedom

A micro stage with 6 degrees of freedom used in super-precise processing and sensing equipment filed is disclosed. The micro stage has three sets of electromagnetic driving units arranged in a horizontal plane for driving the micro stage to obtain movements within the horizontal plane with 3 degrees of freedom in X, Y and θz directions and three electromagnetic driving units arranged in a vertical direction for driving the micro stage to obtain additional movements with 3 degrees of freedom in Z, θx and θy directions. Direct driving by electromagnetic force is used in the invention, resulting in advantages over stacked structures of having a simple structure, a compact profile, a low driven weight center, low stator inertia, etc. Thus, there is no mechanical friction and damping, and high displacement resolution can be provided. The positioning error of a wafer table of a lithographic machine can be compensated, and the leveling and focusing of the lithographic machine can be achieved. The invention is also applicable in super-precise processing and sensing fields for achieving 6 degree-of-freedom motions. The micro stage, which operates on the basis of Lorentz Law, provides a linear relation between the output pushing force and the input electrical current, and thus the movement control technique for it can be well established.
Owner:TSINGHUA UNIV

Power generation unit of integrated gearbox design for aircraft engine

ActiveUS20150311770A1Undesirable increase of be suppressReduce vibrationEngine fuctionsGas turbine plantsAirplaneMagnet
A power generation unit is connected with an engine rotary shaft via an accessory gearbox. A rotor extends through the accessory gearbox and a drive gear is disposed at an intermediate portion of the rotor for driving the latter. Permanent magnet elements are mounted on opposite side portions with the intermediate portion intervening therebetween, and stator coils are disposed so as to confront respective outer peripheries of the permanent magnet elements.
Owner:KAWASAKI HEAVY IND LTD

Low profile compact vertical polarization antenna with reconfigurable directional pattern

The invention relates to a low profile compact vertical polarization antenna with a reconfigurable directional pattern, and belongs to the field of antenna design. The antenna comprises an upper dielectric substrate, a lower dielectric substrate, three identical top loaded folded monopoles, a feed structure, a coaxial cable and a metal floor. According to the invention, top loaded patches are rationally designed into the shape of a fan, so that the patches can be integrated on the same dielectric substrate to reduce the antenna size; then a curved groove is etched on each fan-shaped patch to further reduce the size of a monopole unit; and finally, three PIN switching diodes are skillfully utilized, so that the monopoles are alternately used as excitation oscillators and parasitic oscillators, and the directional pattern of the antenna can be reconstructed. The alternate working mode greatly reduces the antenna size. According to the invention, the designed vertical polarization antennahas three reconfigurable directional pattern modes, can realize 360-degree scanning in the horizontal direction, and has the advantages of low profile and compact structure.
Owner:CHONGQING UNIV
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