Various embodiments of methods and devices for coating stents are described herein.

The present invention discloses a slit nozzle cleaning device for coaters. The slit nozzle cleaning device for coaters comprises a heating source, a crucible and a mixing means, the heating source is used to heat the materials in the crucible; the mixing means is used to mix the materials in the crucible. The mixing means is used to mix the materials in the crucible, thus a uniform heating environment in the crucible can be formed.

A self-cleaning sprinkler is disclosed, generally comprised of an upper and lower housing, which encase a nozzle and a diaphragm. The diaphragm moves in an upward and downward position relative to the nozzle, which allows water located within a chamber to be expelled out of an exit aperture of the nozzle. A needle is secured within the diaphragm to correspondingly move in an upward and downward position, such that once in a closed position, the needle will penetrate the exit aperture of the nozzle in order to clean any debris that may have accumulated therein. The diaphragm moves in from a closed position to an open position depending on the incoming water pressure.

The harmful effects of accumulating droplets of process liquid on the outer surface of a dispense nozzle are prevented by equipping an apparatus for process wafer-shaped articles with a blow-off block that blows the droplets off the nozzle outer surface before they can coalesce and drop in an uncontrolled manner onto the work piece. The nozzle preferably has a polished and tapered outer surface to aid in blowing off any accumulated droplets of process liquid from the outer surface.

The present disclosure describes an agricultural system having a flow path configured to distribute agricultural product from a product storage tank to a row unit across a field via an air flow. The flow path includes an inlet configured to receive the agricultural product, an outlet configured to output the agricultural product, a body extending between the inlet and the outlet, and a first pressure tap and a second pressure tap each extending into the body. The agricultural system also includes a first pressure sensor fluidly coupled to the first pressure tap and configured to output a first signal indicative of a first static pressure of the air flow proximate to the first pressure tap, and a second pressure sensor fluidly coupled to the second pressure tap and configured to output a second signal indicative of a second static pressure of the air flow proximate to the second pressure tap. Further, the agricultural system includes a controller communicatively coupled to the first pressure sensor and the second pressure sensor and configured to receive the first signal and the second signal, and a supplemental air supply fluidly coupled to the flow path proximate to the inlet and configured to selectively provide a supplemental air flow to the flow path. The controller is configured to instruct the supplemental air supply to selectively provide the supplemental air flow to the flow path based on the first signal, the second signal, or a combination thereof.

A self-cleaning water nozzle uses specially configured nozzle halves to allow for self-cleaning, easy access to the nozzle components, and forming a hollow cone spray. The nozzle halves have grooves in side faces thereof, which when the nozzle halves are mated, the grooves form a spiral path for water to travel through the nozzle halves and form the hollow cone spray.

With the use of a low cost microphone mounted at each nozzle, a sound signature of the nozzles may be captured and stored to be used as a continuous indicator of any changes in the flow rate of the nozzles. By measuring changes in sound at each nozzle, it is possible to determine the change in flow before a change in pressure manifests into a problem in the system. The change in sound will oftentimes be significant for plugged nozzles, or nozzles that have excessive wear and flow at too high of a rate. The invention has the advantage of being relatively low cost with ceramic microphones for example. and with little or no moving parts required. A closed loop control system may be included to compensate for nozzle degradation.

A device for working ground surfaces or roadways including a machine frame and a working drum in a drum housing arranged on said machine frame, where no less than one spraying device extending parallel to the working drum and featuring several outlet nozzles for spraying agents arranged next to one another and directed towards the working drum is arranged on the drum housing. Wherein each outlet nozzle includes a drivable closing mechanism with a closing element which, in an open position, fully uncovers the nozzle channel of the outlet nozzle. In a closed position, closes the nozzle channel. Such that the following functions are achieved: that a controller drives the closing mechanisms, with the outlet nozzles and the related closing elements being adapted to one another in such a fashion that the flow cross-section in the outlet nozzle is variable in accordance with the position of the closing element on a specified path between the open position and closed position.

A slit nozzle for dispensing liquid onto a surface of a wafer, comprises a nozzle body having a discharge opening whose length is from 10-100 mm and whose width is from 0.5-5 mm. The nozzle body has a dispensing chamber positioned upstream of the discharge opening and extending to the discharge opening, and a liquid distribution chamber positioned upstream of the dispensing chamber. The dispensing chamber and the liquid distribution chamber are in fluid communication with one another and are separated by a reduction section of the nozzle body whose cross-sectional area is at least 20% less than a cross-sectional area of each of the discharge opening and the liquid distribution chamber.

A system and method for spray boom cleanout. A spray boom cleanout assembly is provided over a fluid pipe of an agricultural sprayer. The spray boom cleanout assembly includes an end cap body having a vent configured to release trapped air from the fluid pipe through a spray nozzle as the fluid pipe is filled with a fluid. The end cap body is coupled by an adapter to a fluid flush valve allowing for improved cleanout of fluid from the end of the fluid pipe after a spraying operation.