In one example, a method of debris removal includes pressurizing a chamber to displace an elastic top surface of the chamber upward, and modulating the pressure of the mass of air within the chamber to cause the elastic top surface to oscillate in response. When the elastic top surface has been installed on the top surface of a vehicle (e.g., a semi-trailer), such oscillation may be used to impart movement to debris that has accumulated on or over the elastic top surface and remove such debris from the vehicle.

Method for cleansing external human keratin materials in contact with a cosmetic composition within which bubbles of a gas are present and/or are generated, the method including the step consisting in subjecting bubbles of the gas, present in the cosmetic composition in the region of the surface of said materials to be cleansed, to acoustic waves in order to bring about their collapse and to generate a mechanical shock on the surface to be cleansed in order to remove the soiling therefrom.

A method and an apparatus for removing dust in a sound outlet hole of a loudspeaker and a terminal device are disclosed. The method includes reading a prestored audio frequency for removing dust; and playing the audio file for removing dust. When the loudspeaker plays the audio file for removing dust, a wind speed in the sound outlet hole is at a maximum.

A pneumatic actuator (4b), in particular for use in a pressure wave generator (1) comprises: a first piston surface (91) which acts counter to a gaseous working medium in a first volume (41), wherein a pressure in the first volume (41) effects an actuator force in a first direction upon the first piston surface (91); a second piston surface (92) which acts counter to the working medium in a second volume (42), wherein a pressure in the second volume (42) effects an actuator force in a second direction opposite to the first direction, upon the second piston surface (92); a throttle between the first volume (41) and the second volume (42); an inlet/outlet opening (45) of the first volume (41) for bringing the working medium into and discharging it out of, the first volume; wherein the first piston surface (91) is larger than the second piston surface (92).

A new and improved surface texture removal device that removes material from drywall, plaster, and flat surfaces. The device has a pivoting and/or articulating hose end that can be attached to a vacuum. The device can be held by a handle on the top that has a screw attachment. The device's primary purpose is to collect texture material that accumulates during scraping with the intent of removing the textures to a vacuum canister. The device's internal construction is made to channel texture to and to balance suction for an even removal of texture material. The device can also serve as a dust pan when laid flat upside down. A collection tray is secured to the trailing edge of the chamber. A hose coupler is secured to the back of the chamber. The hose coupler includes a pivot joint secured to the chamber in an angular orientation. The hose coupler has an open outer end for coupling with a standard vacuum hose.

Various embodiments may include a method for removing filling material from a cavity in a manufactured component with a connection from the cavity opening to surroundings of the component, the method comprising: holding the component in a movable mounting; moving the component and at the same time removing the filling material through the connection opening; and executing a computer program with a processor, wherein the computer program instructs the processor to: analyze geometry data of the component including the connection opening; and calculate a necessary positioning of the component, based on the geometry data and gravitational force; and direct the movable mounting through a sequence of movements for moving the component in space to spill the filling material from the cavity through the connection opening out of the component.

The present application relates to a method for disposing of excess material of a photolithographic mask, wherein the method comprises the following steps: (a) enlarging a surface of the excess material; (b) displacing the enlarged excess material on the photolithographic mask using at least one first probe of a scanning probe microscope; and (c) removing the displaced enlarged excess material from the photolithographic mask.

A cleaning or grooming system that uses acoustic pressure shock waves can remove barnacles, algae, biofilms and other undesired materials from the hulls of ships, propellers, rudders, inlet ports for cooling of nuclear submarines, outlet ports, sonar housings, protective grills and other structures that are submerged in salt or fresh water environments.

A ducted fan engine is deiced using a ground support deicing apparatus having a support structure, a plurality of sonic wave transmitters, an imaging device, and a controller that controls the sonic wave transmitters to emit sonic waves at varying frequencies. A deicing program causes the controller to control (a) providing imaging signals to obtain image data from imaging sensors, (b) receiving image data provided by each of the imaging sensors, and generates images of at least one component part of the engine, (c) detecting a presence or an absence of ice on the at least one component part of the engine, and (d) controlling the plurality of sonic wave transmitters to emit sonic waves in a given frequency range so as to remove the ice from the component part of the engine.

The present disclosure is directed to a method for cleaning gas turbine engine components using an acoustic emitter. More specifically, in one embodiment, the method includes positioning the acoustic emitter at a cleaning location of a component of the gas turbine engine. For example, the cleaning location is typically characterized by having a build-up of foulants on a surface thereof. Thus, the method includes emitting, via the acoustic emitter, acoustic waves at a predetermined frequency towards the cleaning location of the component so as to disperse the foulants.