Abstract: An apparatus for blasting having a distribution block for receiving a blasting medium, a pressure medium and/or a fluid/liquid medium, said distribution block having an outlet connectable with at least one distributing tube.

Abstract: An apparatus for abrasive cleaning includes an abrasive media storage vessel for storing a supply of abrasive media at ambient pressure. The storage vessel has an outlet for supplying abrasive media into a first gas stream at a first gas pressure in a first flow passage, the first flow passage supplying a mixture of gas and abrasive media to an outlet nozzle. A main gas stream communicates with the outlet nozzle via a second flow passage at a second gas pressure, the second gas pressure being higher than the first gas pressure. The mixture of gas and abrasive media from the first flow passage is entrained into the main gas stream from the second flow passage in or downstream of the outlet nozzle.

Abstract: A pinch valve assembly includes a valve body having axially-aligned inlet and outlet ports, a flexible sleeve that is releasably mounted within the valve body, a mechanical pinching mechanism, and a valve casing. The flexible sleeve has a longitudinal bore defining a fluid flow path between the inlet port and the outlet port. The pinching mechanism pinches the flexible sleeve to thereby reduce the effective cross-sectional flow area thereof. The valve casing assembly substantially encloses the valve housing. The valve casing assembly includes at least one removable portion to permit access to the valve housing and the flexible sleeve, to facilitate replacement of the flexible sleeve.

Abstract: A pinch valve assembly includes a valve body having axially-aligned inlet and outlet ports, a flexible sleeve that is releasably mounted within the valve body, a mechanical pinching mechanism, and a valve casing. The flexible sleeve has a longitudinal bore defining a fluid flow path between the inlet port and the outlet port. The pinching mechanism pinches the flexible sleeve to thereby reduce the effective cross-sectional flow area thereof. The valve casing assembly substantially encloses the valve housing. The valve casing assembly includes at least one removable portion to permit access to the valve housing and the flexible sleeve, to facilitate replacement of the flexible sleeve.

Abstract: An apparatus for blasting having a distribution block for receiving a blasting medium, a pressure medium and/or a fluid/liquid medium, said distribution block having an outlet connectable with at least one distributing tube.

Abstract: A high altitude tethered platform, includes an airborne subsystem having a flight platform capable of flight. A powered propeller is mounted on the flight platform. A ground subsystem having a control system, a power delivery system, and a tether system is physically and operatively coupled to the flight platform. The tether system transmits power between the control system and the flight platform.