摘要:
A method for mixing fluids and/or solids in a manner that can be varied from maintaining the integrity of fragile molecular and biological materials in the mixing vessel to homogenizing heavy aggregate material by supplying large amounts of energy. Variation in the manner of mixing is accomplished using an electronic controller to generate signals to control the frequency and amplitude of the motor(s), which drive an unbalanced shaft assembly to produce a linear vibratory motion. The motor may be a stepper motor, a linear motor or a DC continuous motor. By placing a sensor on the mixing vessel platform to provide feedback control of the mixing motor, the characteristics of agitation in the fluid or solid can be adjusted to optimize the degree of mixing and produce a high quality mixant.
摘要:
A method for mixing fluids and/or solids in a manner that can be varied from maintaining the integrity of fragile molecular and biological materials in the mixing vessel to homogenizing heavy aggregate material by supplying large amounts of energy. Variation in the manner of mixing is accomplished using an electronic controller to generate signals to control the frequency and amplitude of the motor(s), which drive an unbalanced shaft assembly to produce a linear vibratory motion. The motor may be a stepper motor, a linear motor or a DC continuous motor. By placing a sensor on the mixing vessel platform to provide feedback control of the mixing motor, the characteristics of agitation in the fluid or solid can be adjusted to optimize the degree of mixing and produce a high quality mixant.
摘要:
A system and method for applying a material, such as a polymer composition, to a substrate, the method comprising mixing the material with a heated carrier gas stream, spraying the material through a nozzle, and radiant and convective heating of the material during transport. Preferred embodiments of the system and method can be used to spray polyetherimides, polyimides, polyamides, thermoset resins (e.g., and epoxies, polyesters and silicones), liquid crystal polymers, compositions comprising a blowing agent, compositions comprising a binder, compositions comprising a metallized material, compositions that produce an open cell foam, and compositions that produce a closed cell foam.
摘要:
Acoustic insulation comprising tuned resonant absorbers to absorb sound energy and prevent it from being emitted and a method of installation of the acoustic insulation. The acoustic insulation is preferably placed or sprayed by a thermal spray process. The resonant absorbers are strategically placed in the placed or thermally sprayed material to maximize sound absorption. Discrete mass absorbers may be sealed or left open.
摘要:
A system and method for fluidizing a polymer powder to be sprayed, metering the material into and mixing it with a heated carrier-gas stream to produce a spray, and using the spray to transport the material to a substrate and radiant and convective heating of the material during transport to achieve melting of the polymer powders.
摘要:
A system (30) and method for fluidizing a polymer powder (11) to be sprayed, metering the material (12) and mixing it with a heated carrier-gas stream (13) to produce a spray (32), and using the spray (32) to transport the material (12) to a substrate (34) and radiant an convective heating of the material (12) during transport to achieve melting of the polymer powders (11).
摘要:
An apparatus and method for forming a fusible coating or structure comprising a combustor that is operative to combust a fuel and contain the resulting flame to produce combustion products; components for cooling the combustion products to produce a hot carrier gas stream; and elements for introducing fusible material into the hot carrier gas stream; made lightweight and easier to operate through the addition of a continuous electronic ignition system and a single air manifold.
摘要:
A nondestructive evaluation apparatus and method for qualifying cold worked fastener holes. In an illustrative embodiment, the apparatus comprises a probe and a detector that interprets probe signals. An inductive sensor coil located in the probe uses a magnetic shielding arrangement to focus sensing to a specific zone of cold worked material around a hole in a test specimen. The shielding mitigates edge effects around the hole and measurement dilution away from the hole. A reference coil, located on not cold worked material away from the hole, provides a comparative baseline measurement. Sensor coils are arranged in a novel resonant filter bridge circuit in the probe and connected to the detector. The detector evaluates impedance changes on the probe caused electrical conductivity variations in the test specimen and correlates the changes to cold work quality.
摘要:
An apparatus and method for forming a fusible coating or structure comprising a combustor that is operative to combust a fuel and contain the resulting flame to produce combustion products; means for cooling the combustion products to produce a hot carrier gas stream; and means for introducing fusible material into the hot carrier gas stream.
摘要:
A self-contained breathing closure for flasks and other containers that require gas exchange. An illustrative embodiment of the closure is comprised of a splashguard, an adaptor for attaching the closure to the container, a bellows element and a gas-permeable barrier element. The splashguard is intended to keep liquid contents under vigorous agitation in the container without wetting the gas-permeable barrier. The adaptor couples the closure to the container in a secure fashion. The bellows element allows for repeated changes in the internal volume of the container-closure system. The gas-permeable barrier allows desired gases to enter and leave the container while excluding small particles and/or microorganisms. The technology may be used with existing glass flask technology, or coupled to a plastic flask that may be configured for either single-use, or multiple-use.