Abstract: A child-resistant molded plastic container lid for open head containers wherein a threaded connection is provided between the container and lid. The lid is provided with at least one and in certain instances with a pair of diametrically disposed resiliently biased locking members, pivotally connected to the closure, which cooperate with locking teeth on the container. The lever arms of the locking members are offset and substantially parallel to each other on opposite sides of the pivotal connection. An elliptical spring is integrally connected to each lever arm and cooperates with portions of a gusset wall enclosing the lever arm to provide continued biasing memory on the locking member. A seal arrangement is also provided between the lid and the container to provide a tight and rigid seal and to reinforce the top of the container and lid to prevent the lid from popping off the container when it is dropped while full of liquid or powder material.

Abstract: The use of a pulsatile flow blood pump in a hemodialysis system is disclosed. In comparison to the customary steady flow blood pump of the prior art, the pulsatile flow blood pump clears urea, a low molecular weight molecule, from the bood approximately three times as fast as does the steady flow roller pump commonly used on a worldwide basis for hemodialysis. Large molecules, such as vitamin B.sub.12 are also cleared more rapidly by the pulsatile flow pump, but less rapidly than the smaller molecules. Total time of dialysis is reduced and the results obtained by using the pulsatile flow blood pump are more physiologic, in that the more harmful molecules, urea, are selectively cleared more rapidly while the larger more desirable molecules, vitamin B.sub.12, are retained.

Abstract: A forklift truck having a fork assembly connected to a telescopic auxiliary boom articulated to a telescopic main boom. The telescopic and articulating features of the auxiliary boom in conjunction with the telescopic feature of the main boom increases the range and reach of the fork assembly to above ground heights and to below ground depths.

Abstract: A neo-natal safety net for selective connection between a delivery table and an attending obstetrician, or between a delivery table and a neo-natal table, thereby providing a safety net for the space therebetween for catching a newborn infant in the event that the baby accidentally slips from the hands of the obstetrician after delivery, or from the hands of an attending nurse during the post-natal care of the baby.

Abstract: Device for the storage, insertion, and removal of containers in and, respectively, from a secured space, with racks (14) exhibiting storage sites (16) for the containers, arranged in tiers in superposition. The containers are retained in the racks (14) by respectively one detent spring (35). During transporting of the racks (14), the detent springs (35) are locked by locking elements (44), and the containers are thereby secured in the racks (14). The unlocking of the containers takes place automatically, only after complete introduction of the racks (14) into the secured space, by an unlocking element (65) that is moved into a lock (47) by a bar (67) abutting against a stop (73).

Abstract: Homogenizing apparatus having a stack of disc valves made of stainless steel having a Brinell hardness from 40-42. A hydraulic actuator for applying a force to the stack of disc valves is spaced above the valve disc housing, the space therebetween being vented to the atmosphere to prevent hydraulic leakage into the valve housing. The disc valves are maintained in stacked relationship by stainless steel rods having their lower ends welded to a bottom plate supporting the stack of valve discs. To enhance the washing and cleaning of the apparatus radii are provided on all of the corners of the fluid contacting components which have angles less than 135.degree..

Abstract: A mixed-gas, closed circuit, re-breather diving unit (11), and associated diving system and method, having separate supplies (21, 22) of oxygen and inert gas, arranged to feed a breathing loop (23, 25, 26) in such a manner that, in use, oxygen is fed into the loop (23, 25, 26) as it is consumed by a diver, while inert gas is fed into the loop (23, 25, 26) by a water-pressure-sensitive valve (37) to maintain the loop volume, the unit (11) having oxygen partial pressure (ppO.sub.2) monitoring sensors (41) whereby the ppO.sub.2 is continuously monitored and maintained at a pre-set level below that of the oxygen toxicity threshold, having a depth gauge diaphragm (43) and having carbon dioxide (CO.sub.2) scrubber means (23) within the breathing loop (23, 25, 26), and the pre-set level of the ppO.sub.2 can, once the ppO.sub.2 monitor has been calibrated initially, be reset instantly to another ppO.sub.

Abstract: A flexible rack system for use in distribution centers servicing retail stores with food and non-food items and comprising rows of pallet storage racks of different types within the same row and arranged in a predetermined pattern of high movement, medium movement and low movement racks including both selective and push-back rack types which permit one filling an order to carry out his task with a minimum number of stops and a time for picking selected items being significantly reduced.

Abstract: A disposable, shielded catheter-cannula insertion needle wherein a catheter-cannula assembly is detachably connected to the distal end of a housing having a piston assembly slidably mounted therein. The insertion needle extends through the catheter-cannula and is connected to the piston assembly. A stem, including a cap, is detachably connected to the housing to provide a cover for the catheter-cannula and connectable to the piston assembly for drawing the contaminated insertion needle into a shielded position within the housing. The catheter-cannula assembly includes a self-sealing bushing for closing the flow-through passage in the catheter-cannula when the insertion needle has been removed therefrom.

Abstract: A holder (48, 49) for the cargo container (36) is supported so as to be able to rotate on a carrier frame (31) that is to be attached to an aircraft, in particular a helicopter, the container (48, 49) is connected with two fluid-drive double-acting cylinder-piston units (40, 41) that are mounted on the arms (37, 38) of the carrier (31), by means of which it together with the container (36) can be rotated. The container (36) is connected through the connector elements (54, 55) with the retainer plates (48, 49) so as to be releasable, so that the container that is brought back empty by an aircraft returning from one trip can be replaced by a container that has been filled or charged meantime, so that the aircraft can take-off once again almost immediately.

Abstract: A carpet sweeper for removing metallic staples, paper clips and the like from carpet wherein a semi-circular wire mesh fabric is secured to the forward end of a housing or base member and a magnet is secured to the bottom of the base member and extends along the trailing edge of the wire mesh fabric. The wire mesh fabric dislodges the metallic fasteners from the carpet and the magnet attracts and accumulates the dislodged fasteners. A scraper is removably mounted on the housing for removing the accumulated fasteners from the surface of the magnet, and a rod having a slotted magnetic end is provided for manually removing deeply embedded metallic fasteners from the carpet.

Abstract: An aquatic wheelchair having a main flotation body of thermoplastic material of closed cell construction including a seat portion and an integral backrest portion. Flotation paddle wheels are connected to the seat portion and a flotation stabilizer wheel assembly is detachably connected to the backrest portion. The flotation paddle wheels are constructed and arranged to facilitate the grasping thereof by the user for manually propelling the wheelchair not only on soft terrain but also in water.

Abstract: The intermittent straightening of the wire (1) is carried out by means of a fixedly supported straightening rotor (4), the straightening blocks (5, 6, 7) of which radially deflect the wire (1) advanced by conveying mechanism (2). The mass moment of inertia of the straightening rotor (4) is dimensioned to be so small that the straightening rotor (4) can be decelerated and accelerated at least approximately within the same time period as the wire (1) by the conveying mechanism (2). For cutting to length, the straightening rotor (4) is braked in synchronism with the wire (1) and thereafter again accelerated.

Abstract: A dual-action ball valve having a sleeve fixedly mounted within the valve bonnet. Spiral slots are provided in the sleeve for receiving a transverse guide pin mounted in the valve stem. The lower end of the valve stem is provided with sloping cam surfaces cooperating with tapered side walls provided in an apertured insert mounted in the top wall of the ball valve through which the stem extends. A pair of upwardly extending arcuate members are formed on the insert and engage the lower end of the valve bonnet bushing to provide a trunnion for the ball valve. The components of the dual-action ball valve provide increased bearing surfaces to facilitate use of the valve in high pressure systems.

Abstract: An annular chamber (8) is formed between a pipeline section (1) and a housing (5, 6) surrounding same. This annular chamber is in communication, via openings (10, 11) in the wall of the pipeline section (1), with the interior (12) of the latter. An air-filled hose ring (16) is arranged in the annular chamber (8). The device damps the pressure surges occurring in domestic installations on account of the rapid closing of quick shutoff elements, for example lever mixers. The danger of damage to the pipelines and fittings is thereby avoided.

Abstract: This invention provides an electroacoustic transducer and a method of making it. The transducer according to the invention comprises a substrate of a semiconductor material with a recessed portion. A membrane is stretched across the recessed portion, which membrane is set in vibration in response to an input signal comprising audio and/or ultrasonorous frequencies. A pair of electrodes is provided, which form a capacitor, and between which an electric field is present. The electrodes are so arranged relatively to the membrane that the capacitance of the capacitor can vary under the influence of vibrations of the membrane, so that acoustic signals are converted into electric signals. A layer of an electrically insulating material functions as a carrier for an electric charge to provide an auxiliary electric field between the electrodes.

Abstract: This invention provides an electroacoustic transducer and a method of making it. The transducer according to the invention comprises a substrate of a semiconductor material with a recessed portion. A membrane is stretched across the recessed portion, which membrane is set in vibration in response to an input signal comprising audio and/or ultrasonorous frequencies. A pair of electrodes is provided, which form a capacitor, and between which an electric field is present. The electrodes are so arranged relatively to the membrane that the capacitance of the capacitor can vary under the influence of vibrations of the membrane, so that acoustic signals are converted into electric signals. A layer of an electrically insulating material functions as a carrier for an electric charge to provide an auxiliary electric field between the electrodes.

Abstract: A lidded container made of plastics material comprises a body (10) with a top rim (11) and a lid (12) with a flange (18) for sealing engagement inside the rim (11). The lid (12) has a web (17) part carrying said flange (18), which depends therefrom, and also carrying a depending skirt (16) for surrounding the outside of the rim (11), said skirt (16) having a plurality of inwardly-directed projections (21) each engageable in latching relationship in a recess (31) on the outside of the rim (11), and said web part (17) having apertures (24) corresponding to said projections (21), whereby a tool can be inserted through each aperture (24) to disengage the corresponding projection (21) from said recess (31).