86results about How to "Increase energy dissipation" patented technology

A lighting system includes one or more methods and systems to control dissipation of excess power in the lighting system when the power into a switching power converter from a leading edge, phase-cut dimmer is greater than the power out of the switching power converter. In at least one embodiment, the lighting system includes a controller that controls dissipation of excess energy in the lighting system to prevent a premature disconnection of the phase-cut dimmer. In at least one embodiment, the controller actively controls power dissipation by generating one or more signals to actively and selectively control power dissipation in the lighting system. By actively and selectively controlling power dissipation in the lighting system, the controller intentionally dissipates power when the power into the lighting system should be greater than the power out to a lamp of the lighting system. In at least one embodiment, the controller creates one or more intermixed and/or interspersed power dissipation phases with one or more switching power converter charging and/or flyback phases.

A method for adhesively bonding a covering to a support using a dry heat-sensitive adhesive to produce an assembly for an automotive interior. The method positions the layers to form an assembly of material layers in tooling that concentrates microwave radiation energy conversion to the adhesive layer above its melting temperature. The method for fabricating an assembly in accordance with the subject invention, particularly when the tooling is transparent to the radiation, controls the radiation reflection, which is generated at a frequency exceeding 30 GHz.

The invention discloses a method for preparing recycled aggregate concrete from steel fiber rubber and slag. The method comprises the following steps: waste concrete is crushed, separated, screened, washed and dried to obtain waste concrete recycled aggregate; waste tires are coarsely crushed, separated, washed and dried to obtain steel fiber rubber particles; the slag is crushed, screened, magnetically separated and classified by air to obtain slag powder; the waste concrete recycled aggregate, the steel fiber rubber particles, cement slag powder mixture, natural coarse aggregate, sands and water are stirred in proportion; the cracking resistance, thermal insulation performance and energy absorbing and noise reducing performance of the recycled aggregate concrete can be effectively improved by modifying the steel fiber rubber particles; the working performance of green concrete and contraction performance of the concrete in each curing time can be improved by modifying the slag powder; and the infiltration resistance and carbonization resistance can be effectively improved and chloride ion diffusion velocity of the concrete can be effectively reduced. The material is a cycled economical building material, and can improve the material performance on the basis of not increasing cost.

A brake pad assembly provided for a disc brake apparatus. The brake pad assembly comprises a backing plate having a flat inner face and a flat outer face oriented opposite to the inner face, a friction member fixed to the inner face of the backing plate, and an anti-squeal shim attached to the outer face of the backing plate. The anti-squeal shim includes a flat support plate attached to the outer face of the backing plate and a straight flat flange plate. The support plate of the anti-squeal shim has a peripheral edge including opposite outer and inner edges and opposite side edges. The flange plate is in the form of a flexible cantilever formed integrally with the support plate of the anti-squeal shim and extends away from one of the outer, inner and opposite side edges of the support plate of the anti-squeal shim.

A load limiting mechanism for a motor vehicle, comprising at least two parts (1, 2, 10, 12, 16, 20, 21, 46, 22, 40) controlled relative to one another with a frequency controlled oscillating movement. The parts (1, 2, 10, 12, 16, 20, 21, 46, 22, 40) moving relative to one another comprise interlocking gears (3, 4, 13, 15, 24, 25, 26, 27) and the frequency controlled oscillating movement results thereby that at least one of the parts (1, 10, 21, 22) compared to the other part (2, 12, 16, 20, 40, 46) executes a wavelike oscillating feed motion, in which the gears (3, 4, 13, 15, 24, 25, 26, 27) alternately become engaged and disengaged thereby dissipating energy.

Helmets and pad kits for use in helmet shells are provided. The pad kits, when inserted or attached to the inner surface of a helmet shell, provide a user or wearer with enhance blunt force protection relative to padding in prior helmet systems. Pad kits include pads having one or more layers of differing material, typically two or more layers of material; one layer including a rate sensitive, impact absorbing material, and another layer including a comfort or form-fitting material. The impact absorbing material provides enhanced protection to the user's head from impact to the helmet shell.

In at least one embodiment, a lighting system includes one, some, or all of a switch path, link path, and flyback path power dissipation circuits to actively and selectively control power dissipation of excess energy in a switching power converter of the lighting system. The flyback path power dissipation circuit dissipates power through a flyback path of the switching power converter. In at least one embodiment, the lighting system controls power dissipation through the flyback path by controlling a transformer primary current in the flyback path and, for example, limiting the primary current with a current source and dissipating power in the flyback switch and the current source.

A pneumatic tool (20) for impacting a workpiece (22) is provided. The tool (20) comprises a casing (42) defining a chamber (48). A piston (54) is slidable within the chamber (48) along an operational axis (A). An exhaust valve (100) controlled by a pilot valve (200) slides the piston (54) by selectively introducing and releasing pressurized fluid into and out from the chamber (48). A tool bit (24) is slidable within the chamber (48) to impact the workpiece (22). Kinetic energy is transferred to the tool bit (24) from the piston (54) via an impact from the piston (54) as the piston (54) slides within the chamber (48). An energy absorbing mechanism (402) reduces the kinetic energy of the tool bit (24) after impact by the piston (54). The energy absorbing mechanism comprises a sleeve (404) that slides along the casing (42) and first (412) and second (414) pressure chambers that dissipate the kinetic energy of the tool bit (24) in multiple stages.

A flexible duct with a frame made by winding a S-profiled metal strip into clamped turns, wherein the edges of two adjacent turns overlap each other in order to form between them a helical closed space having an essentially rectangular cross-section and at least partially filled by a helically-wound spacer separate from the metal strip and resting on at least two opposing walls of the lower surface and the upper surface, wherein the spacer has, in the winding radial direction, a crush resistance substantially equal to zero and, in the winding longitudinal direction along the pipe, a substantial crush resistance.

Lateral motion devices are used in conjunction with relatively rigid shear assemblies to further dissipate shear forces on frame construction buildings. In one embodiment, the lateral motion device is interposed between the shear assembly and the upper portion of the wall to permit relative motion therebetween and to absorb and dissipate a portion of the energy associated with shear force through spring-like behavior and deformation. In one embodiment, the energy dissipation is achieved by a plurality of corrugation structures, where the top of the corrugation is attached to the upper portion of the wall and the bottom of the corrugation is attached to an interconnecting assembly that is securely attached to the foundation. Placing the energy dissipating device near the upper portion of the wall mounted on a comparatively rigid frame provides a relatively short moment arm with respect to the lateral forces imposed by the wall on the energy dissipating device to allow better control of the response to the shear force.

A rotor stage of a gas turbine engine includes a platform from which rotor blades extend. The platform is provided with a circumferentially extending damper ring, the damper ring having an engagement surface that engages with the platform. The damper ring provides damping through slip between the engagement surface and the platform. The damper ring has a hoop stress that results in a load being provided to the platform from the engagement surface. The load can be optimized in order to provide improved damping.

Tunable, bio-functionalized, nanoelectromechanical systems (Bio-NEMS), micromechanical resonators (MRs), nanomechanical resonators (NRs), surface acoustic wave resonators, and bulk acoustic wave resonators having superhydrophobic surfaces for use in aqueous biochemical solutions. The MRs, NRs or Bio-NEMS include a system resonator that can vibrate or oscillate at a relatively high frequency and to which an analyte molecule(s) contained in the solution ○ can attach or upon which small molecular-scale forces can act; a device for adjusting a relaxation time of the solution, to increase the quality (Q-factor) of the resonator inside the solution, to reduce energy dissipation into the solution; and a device for detecting a frequency shift in the resonator due to the analyte molecule(s) or applied molecular-scale forces. The resonator can include roughness elements that provide superhydrophobicity and, more particularly, gaps between adjacent asperities for repelling the aqueous solution from the surface of the device.

The invention relates to a preparation method of polylactic acid/polyadipic acid-polybutylece terephthalate blend, and belongs to the field of high molecular polymer blending modification. In the method, the injection of a supercritical carbon dioxide fluid can generate synergistic capacity increasing and toughening effects on the PLA/PBAT blend with a chain extender ADR or ADR and organic montmorillonite (OMMT) beside reducing the viscosity of a processed melt, so as to further refine a PBAT dispersion phase and enhance the adhesion of a PLA/PBAT interface layer. Finally, a set of PLA/PBAT modified blends with high toughness is obtained, and the maximum notched impact strength is 36.23 kJ/m2. Under the plasticization of the supercritical carbon dioxide fluid, the selective distribution ofOMMT nanoparticles in the PBAT and PLA interface layers and in-situ generated PLA-ADR-PBAT block macromolecules can stabilize the interface of PBAT dispersion phase; and the synergistic effect enables the dispersion phase to be better refined during the blending process, thereby improving the impact toughness of the blend.

The present invention relates to a ceiling mount for a surgical microscope, including at least two load-bearing sections joined together by a damping interface, said interface including at least two damping layers which are made of damping material and are separated from each other by a bracket plate made of non-damping material. In order to damp a wider spectrum of mechanical disturbances even more efficiently, the material of one damping layer has other elastic properties than the material of the other damping layer.

The invention aims at providing a bag type dust collector with a self-cleaning ability. The bag type dust collector comprises a filtering device; an exhaust cavity is arranged at the upper part of thefiltering device, and a dust hopper is arranged at the lower part of the filtering device; the bottom of the dust hopper is fixedly connected with an ash discharge hole; the filtering device is internally provided with a plurality of filter bags; an air inlet is formed in the side wall of the dust hopper; an exhaust hole is formed at the right side of the exhaust cavity; the exhaust hole is externally connected with an exhaust unit; a cleaning assembly is arranged on the right side wall of the dust hopper; the filtering device is internally provided with a vibration assembly. The bag type dust collector solves the problem that the exhaust gas entering the dust hopper is larger in wind speed and an air inlet is smaller, so that the exhaust gas entering the filtering device is unevenly distributed, the amount of dust absorbed by the different filter bags is different, the dust removal period of a dust removing device to the filter bags is shortened, and the energy consumption of equipment is increased; the exhaust gas contains hard particles, and the particles also have angular edges; the hard particles impact the filter bags at a certain speed for a long time, so that the filter bags are damaged, and the service lives of the filter bags are reduced.

This invention relates to architecture techniques, and more particularly to an assembled double steel-concrete composite shear wall embedded with a damping interlayer, which includes a double steel layer, a double damping interlayer and a concrete layer. The shear wall is formed by bolted bar joints. The double steel layer includes two first steel plates which are arranged along a length of the assembled double steel-concrete composite shear wall in a parallel manner and two second steel plates along a width of the assembled double steel-concrete composite shear wall. The double damping interlayer includes a first damping interlayer which locates between the first steel plates and the concrete layer and a second damping interlayer which surrounds the bolted bar joints and is surrounded by a steel tube.

An electrical equipment containment is arranged on a cooling enclosure opening out onto the outside. An outlet orifice makes the containment communicate with the cooling enclosure. This orifice is closed by a membrane or a check valve. A grate separates the cooling enclosure into an upper volume and a lower volume. The grate supports a layer of solid granular material the upper surface whereof remains free. This material is preferably porous and also comprises dusts. In the event of an internal electric arc, the shock wave escaping from the containment is dampened by the surface deformation of the layer of solid material. The incandescent particles projected via the opening are stopped by the layer of solid material. The hot gases are cooled as they flow through the material, causing a cloud of dust contributing to preventing any post-combustion.

The invention belongs to the technical field of agricultural water-saving irrigation, relates to technical equipment for water-saving trickle irrigation, and particularly relates to a special-shaped streaming trickle irrigation device, which consists of a water inlet groove, a flow way, a water outlet groove and a filter window. A special-shaped streaming body is arranged in the flow way, and an upstream face of the special-shaped streaming body is concavely arc-shaped, and the special-shaped streaming body has a special-shaped streaming effect and a reverse jet flow effect. After water flow enters the flow way, concave reverse jet flow arcs of the upstream face of the special-shaped streaming body are impacted, the water flow is forced to flow to arc directions of side corners of outer walls of flow way units along wall surfaces of the jet flow arcs, flowing speed and turbulence intensity of the side corners are increased, the flow way is scoured, an energy dissipation effect of the flow way is strengthened, flowing stopping regions of the side corners are eliminated, possibility of deposition and caking of impurities is reduced, and the special-shaped streaming trickle irrigation device widely meets requirements of irrigation of field crops, vegetables, fruit industry and the like.

The invention discloses a high-impact resistance surface functional group treated carbon nanotube modified reactive powder concrete. The high-impact resistance surface functional group treated carbonnanotube modified reactive powder concrete is characterized in that the raw materials of the high-impact resistance surface functional group treated carbon nanotube modified reactive powder concrete comprise cement, functionalized multi-walled carbon nanotubes, silica fume, fly ash, sands, a water reducer and water; and the functionalized multi-walled carbon nanotubes are carboxylated multi-walledcarbon nanotubes or hydroxylated multi-walled carbon nanotubes. The functionalized multi-walled carbon nanotubes can significantly enhance the dynamic compressive strength, dynamic peak strain and impact toughness of the reactive powder concrete. When the strain rate is in a range of 200-800/s and the dosage of the multi-wall carbon nanotubes is 0.25-0.5%, the dynamic compressive strength of concrete can be increased by 71.3%, the dynamic peak strain can be increased by 101. 1%, and the impact toughness can be increased by 100.8%.

The invention provides perforated floating breakwater units and circular-arc-shaped multilayer perforated floating breakwaters. The perforated floating breakwater units comprise perforated floating breakwater unit base bodies, and through penetrating holes are formed in the floating breakwater unit base bodies. All the perforated floating breakwater units are connected through connecting chains toform the circular-arc-shaped perforated floating breakwaters, the two or more layers of circular-arc-shaped perforated floating breakwaters are arranged outside a protected body, all the layers of circular-arc-shaped perforated floating breakwaters are arranged in a staggered mode, and intervals are reserved among all the layers of circular-arc-shaped perforated floating breakwaters. The circular-arc-shaped arrangement mode is adopted, and thus the good wave absorbing effect on long peak waves and multidirectional short peak waves is achieved; the total length of the breakwaters is decreased,and the breakwaters has good adaptability to islands of various contour shapes; the multilayer staggered arrangement mode is adopted, thus the wave absorbing effect of the breakwaters is further enhanced, and the high reliability under the extreme sea conditions is still achieved; and through the perforated structures, energy dissipation of the waves can be greatly enhanced, and the wave loads borne by the floating breakwaters are reduced.

The invention discloses a radial annular mixed seal, which comprises a rotor and a sealing sleeve sleeved on the rotor, wherein a pressure cavity air outlet and a pressure cavity air inlet are formed on the sealing sleeve; an adjusting plate and a bellow section are arranged inside the sealing sleeve; one end of the bellow section is fixed on the sealing sleeve, and the other end of the bellow section is connected with the adjusting plate; and a pressure cavity is formed between the adjusting plate and the sealing sleeve. The radial annular mixed seal is characterized in that: a honeycomb sealing disc is arranged on the rotor and is positioned in the middle of the adjusting plate; and a sealing cavity is formed between the adjusting plate and the honeycomb sealing disc. By the radial annular mixed seal, axial flow of gas is changed into radial flow, axial spiral flow is eliminated, the leakage rate is greatly reduced compared with the common seal because the honeycomb sealing disc is arranged, a sealing gap has high adaptive adjusting capacity, the seal has long service life, the exciting force of the airflow in the seal is obviously reduced, and the airflow excitation is greatly reduced.