Abstract: A breast pump comprises a body member (2) including a breast engaging portion (4) shaped to engage a region of a user's breast, a container (32) attached to the body member (2), valve means (28) between the body member (2) and the container (32), and, within the body member (2), a sleeve (12) sealing the interior of the body member (2) from the atmosphere, the sleeve (12) being selectively movable from a rest condition to a displaced condition by actuating means (14) operatively connected to the sleeve (12), movement of the sleeve (12) from the rest condition to the displaced condition creating an increasing volume of reduced pressure within the body member (2) whereby firstly the valve means (28) is closed to prevent evacuation of the container (32), and whereby milk is expressed by the user into the body member (2), and return movement of the sleeve (12) from the displaced condition to the extended condition releasing the reduced pressure allowing the valve to open, the expressed milk flowing through the va

Abstract: A pipe coupling (11) comprises a tubular casing (12) and a sealing gasket (13), which fit over the ends of the pipes to be coupled. The casing (12) is formed from a strip of rolled steel into a cylindrical shape, with a longitudinal gap (14). The free ends of the strip, which forms the casing, are bent outwardly to form radially projecting flange (15) along opposite edges of the longitudinal gap (14). The outer ends of the flanges (15) are bent back at right angles to form stiffening flanges (16) along the longitudinal outer edges of the flanges (15). A bridging member (18) fits inside the casing so as to span the longitudinal gap. Tensioning screw bolts (25) pass through reinforcing plate's (20) and the flange (15). A hexagonal nut (34) is threaded onto the end of each screw bolt. The nuts fit into the channel but are prevented from turning. The heads (35) of the bolts have a hexagonal recess to take an Allen key so that they can be tightened to clamp the coupling around the pipe ends.

Abstract: An anchoring device (10) for a pipe coupling comprises an annular channel (11) of generally U-shaped cross-section. The channel has a web portion (13) with flanges (14) and (15) projecting radially inwardly for its circumferential edges. A frusto-conical gripping ring (16) is located in the channel (11) with its outer edge (17) inside the web portion (13) adjacent one of the flanges (14) and its inner edge (18) adjacent the other flange (15) and projecting inwardly beyond the said other flange. The annular channel forms an incomplete ring and is compressible circumferentially. The anchoring device is fitted inside a clamping device (40), which fits around a pipe coupling. The clamping device (40) has tensioning means (50) which tighten the clamping device around the pipe, compressing the annular channel (11) and causing the inner edge (18) of the frusto-conical gripping ring (16) to engage the outer surface of the pipe and thus grip the pipe.

Abstract: A caul screen is made with metal cable having a low twist level of between 1 and 5 turns per inch and where the cable is made with filaments that have been coated with brass; the cable is woven into a mesh to form the screen.