Abstract: An apparatus for improving soft ground, in which cement slurry is vigorously discharged from an injection rod by highly pressurized air, thus allowing hardening agent to evenly infiltrate the soft ground, is disclosed. The apparatus includes an injection rod (20) having an injection pipe (10) into which fluid is introduced, and an outer casing (12) disposed around the injection pipe (10) with an air feeding path (14) therebetween, one or more injection holders (40) coupled to an outer surface of the outer casing (12) to be positioned at different levels and to be inclined downward, and a bit (30) coupled to a lower end of the injection rod (20), and having jet holes (60, 60a), which are inclined downward and in which inclined jet nozzles (70, 70a) are inserted, and a cutting water nozzle (74) provided at its center.

Abstract: A Device for transferring a vibrating movement to a rigid pipe for letting it penetrate into or removing it from a bed in upright or inclined position, comprises a clamping member for clampingly holding the upper end of the pipe for transfer of the vibrating movements thereto. The clamping members can be biased away from each other for clampingly engaging—exclusively—the inner surfaces of the pipe. The device further comprises a body to be attached to a vibrator block. The clamping members form a rigid unity with the body, considered in the axial direction of the pipe.

Abstract: A fish diversion apparatus for a water intake of a dam includes a frame extending between a top end oriented towards the water surface and a bottom end oriented below the water surface. The frame supports a number of bar screen panels below the water surface. The bar screen panels allow water flow therethrough from an upstream side to a downstream side. A flow scoop extends from the bottom end of the frame to direct the fish along the upstream face of the bar screen panels. A fish diverter device is provided adjacent the top end of the frame in communication with the upstream side of the bar screen panels.

Abstract: A working device, especially a ramming device for compacting soil, comprises a housing which belongs to an upper mass, and has a working mass which can be linearly driven back and forth with regard to the upper mass. The working mass is linearly guided via a guide cylinder which is fastened to the housing with elastic mobility. The transfer of bounce impacts acting upon the working mass to the upper mass can be effectively reduced by the elastic mobility of the guide cylinder with regard to the housing.

Abstract: A swivelable quick connect assembly for use with tubular conduits is disclosed as comprising a housing having an axial bore for receiving one end of the conduit, an elastomeric ring-like seal disposed in the bore for providing a fluid-tight seal between confronting portions of the conduit and the housing, an annular bushing disposed in the bore for positioning the seal and for guiding the one end of the conduit into nesting relationship with the bore, and a retainer detachably secured to the housing and cooperable with an annular projection on the conduit for securing the conduit in its operative position within the bore, the retainer having resilient deformable portions which are adapted to snap over the locking wall upon insertion of the conduit into the housing bore.

Abstract: A sanitary fitting provides a fluid-tight seal between the fitting and the axial end of the tube coupled to the fitting, thereby eliminating crevices between the end of the tube and the sealing point of the fitting and consequent fluid accumulation and potential bacteria growth. The fitting preferably includes a body having a recessed outer end, an elastomeric seal disposed in the recess in the body, a gripping ring slidable into a stepped notch formed in the outer end of the body, and a locking mechanism which grips the tube and which draws the tube into a position in which its end sealingly engages the seal and causes the seal to sealingly engage an annular shoulder of the body. The gripping ring, body, and tube interact to provide very high retention forces permitting the fitting to withstand fluid pressures on the order of several thousand psi.