Abstract: Disclosed is a tilt control mechanism for a knee tilt chair that permits the chair to be locked in a number of intermediate tilt positions, as well as in a full upright and a fully reclined position. A portion of a pivotal chair seat support member is a curved flange that is provided with a plurality of spaced openings. The chair control housing contains a lock block slidably supported on guides. An actuator shaft attached to the chair control housing has a cam member attached to the shaft. A quarter turn of the actuator shaft causes the cam member to move the lock block to a forward position adjacent the curved flange. With the lock block in the forward position, one of a plurality of spring loaded pins in the lock block, is allowed to enter one of the openings in the curved flange thereby locking the chair support member of the chair into a predetermined tilt position.

Abstract: A chair mechanism (1) for office chairs comprises a synchronous mechanism with integrated negative inclination. The aim is to achieve all sitting postures occurring during office work, and in particular the correction of injurious continuous sitting. The arrangement, the function and the connection of the pivot axes and the configuration of the seat support (4) within the chair mechanism (1) have predominant novelty value. Mechanical springs, which are less expensive than gas springs, are used as component parts. Springing during synchronous movement is effected by means of a torsion spring (9), while the negative inclination utilizes compression springs (21). The mechanism offers a number of options--locking in determined functions--for special applications. In addition to the wide movement range, the apparatus is distinguished by a compact and efficient construction.

Abstract: The electromagnetic machine (1) includes a tubular duct (3 ) intended to receive a conducting material which can circulate in the duct (3) around the core (4) and an inductor (2) arranged coaxially around the duct (3). The inductor (2) includes a magnetic circuit (15) formed by laminated sheet metal combs (18) and windings (14 ) arranged in annular notches (5 ) made in the magnetic circuit (15). The notches (5) are separated from each other by teeth. The teeth of the inductor have lengths in the axial direction which are smaller in the central part of the inductor (2) than in the end parts. The notches (5) are less deep at the ends than in the central part and enclose windings having a smaller number of turns. The windings (14) are each connected to one phase of a polyphase current source.

Abstract: A pump that is in essence leak-proof and prevents the escape to ambient atmosphere of environmentally hazardous fluent materials is comprised of an outlet block defining a pump chamber having a fluid inlet and a fluid outlet, a piston having one end reciprocable within the pump chamber and sealed to the outlet block, a piston rod connected to the other end of the piston for reciprocating the piston, a dynamic block secured to the outlet block and defining a sealed dynamic chamber within which the other end of the piston reciprocates, and an outlet from the dynamic chamber in continuous closed-circuit communication with a recirculating system for preventing escape into the environment of any fluent material that may leak past the piston seal. The pump also includes an articulated seal for sealing the piston rod to the dynamic chamber to maintain the sealed integrity of the chamber while at the same time accommodating reciprocation of the piston rod.

Abstract: A holderless hose clip, primarily for use in preventing piping hoses from falling off of connecting pipes in automotive vehicles, includes a clip body formed of a leaf spring having the shape of an annular band and which clamps the hose when released from a spread-diameter state to assume a free state. A pair of grip strips are formed by bending the ends of the clip body, respectively. An engagement claw and an engagement recess are formed on the respective grip strips to secure the grip strips to each other when the grip strips are gripped, so that the clip body is held in the spread-diameter state. The engagement claw has a guide face for guiding the grip strips axially of the clip body when the grip strips are gripped whereupon the engagement claw is received in the recess.

Abstract: A solution pumping system is disclosed which is embodied as a disposable pump cassette including a self-contained positive displacement pump, and an associated pump driver including a reciprocable pump piston for driving the pump of the cassette. This system is particularly suited for use in compounding in preparation of parenteral solutions for administration to patients. In order to promote high liquid output with minimum peak pumping pressures, the controls of the system operate to provide a "square" pumping pressure waveform, thus optimizing performance of the system. This is achieved by selectively varying the velocity of the pump piston during its operation.

Abstract: This invention most generally relates to a clip mechanism assembleable to the back-side of an ornament member, most preferably jewelry objects or fanciful buttons and the like, to be displayed by removable attachment to clothing mainly through "button-holes" and used, for example, as tuxedo-studs, cuff-links, lapel-pins, etc. The clip mechanism may also be used with hooks or posts upon which may be placed, or hung, tools, pictures, or articles for display. The clip mechanism is removably insertable into a mounting hole or peg-board hole and because of the particular design of the clip mechanism will support the article hung on the hook or post. The clip mechanism is removable with a pulling force in a direction opposite the direction of insertion of the mechanism.

Abstract: A device for producing compressed air arranged to suction air from the atmosphere an increase the pressure of the suctioned air by a turbo-supercharger, to cool the air at high temperature by passing the air through an intercooler and to compress the air to a required pressure by an oil-free screw compressor having an air inlet port connected to the intercooler. The compressed air discharged from the compressor is cooled by coolers and then delivered to a user side.

Abstract: A homogenizer includes a homogenizing valve assembly mounted to a pump block. A set of one or more pump chambers is formed in the block and a plunger is positioned in each chamber. Each pump chamber is formed along a substantially horizontal pump axis and extends through the pump block. A removable check valve module comprising a suction valve assembly and a discharge valve assembly is positioned in a bore which intersects each pump chamber. Each valve module is secured in the bore by a retaining pin such that the module can be easily and quickly removed as a single unit.

Abstract: A combined chair and backpack includes a conventional folding lawn chair type frame having an upper transverse frame member pivotally connected to an upper portion of a pack frame. In an open orientation of the chair, the pack frame and chair back frame form an A-frame configuration to enhance stability. A removable reversible head rest/top pack assembly includes tubular side frame members which telescopically receive upper mounting rod portions of the pack frame. In an open condition, the head rest faces the chair, and in a closed condition the head rest is reversed such that the top pack is disposed in overlying relation with respect to the collapsed chair. A plurality of straps suspend a pair of insulated beverage and food storage bags from respective opposite arm rests. Internal stiffeners maintain the bags erect. In a closed configuration, quick release straps secure edge portions of the bags in adjacent relation.

Abstract: A rod-driven, downhole pump is disclosed, the pump including a traveling barrel contained within a pump housing, a central pump rod extending axially within the barrel, a valve ball located at the lower end of the pump rod, a valve seat near the barrel lower end, the pump rod including a rod shoulder for engaging the upper end of the barrel, the barrel containing annular passageways for the flow of fluid through the barrel, the pump rod reciprocable within the barrel, and the barrel reciprocable within the pump housing. The downward stroke of the pump rod causes the rod shoulder to engage the barrel upper end and concurrently displaces the valve ball below the valve seat, thereby allowing environmental fluid to flow through the barrel annular passageways. On the up stroke of the pump rod, the valve ball engages the valve seat and pushes the pump barrel upward within the pump housing. The sealing of the valve ball on the valve seat and the upward movement of the barrel displace columnar fluid upwardly.

Abstract: Portable, low noise air pump apparatus employing an inexpensive lightweight pump and motor unit, which pumps a pulsed noisy output into a plenum chamber inside a rubber impervious sub-housing which absorbs noise and vibration; and a sound deadening plastics tube which carries the compressed air from the plenum, via a sound absorbing chamber (surrounded by lightweight sound absorbing material which supports the sub-housing) and across an accommodation space to an outlet fitting from which a smooth low-noise compressed air output can be supplied.

Abstract: A drive mechanism for movement of a horizontal shelf in a vending machine includes first and second spaced apart rotatable sprockets. A continuous chain engages and extends around the first and second spaced apart sprockets. A plurality of brackets are attached to the continuous chain supported in a fixed angular relationship to the chain and at predetermined distances along the length of the chain for movement therewith upon rotation of the sprockets. Gear portions are affixed to the vending machine adjacent to and extending approximately 180.degree. around the first and second sprocket. A planetary idler gear is rotatably mounted on the bracket for engagement with the track gear portions. The planetary idler gear is sized for having a predetermined gear ratio with the track gear. A pinion idler gear is coaxially affixed for co-rotation with the planetary idler gear thereby forming an idler gear pair mounted to the bracket for rotation relative to the bracket.

Abstract: A drain flushing device for allowing a user to unclog a drain in either of two modes. The user is given the option to either use the device as a liquid column guide or as a pump.

Abstract: In a plunger pump having a pump chamber delimited by a cylinder and a plunger reciprocating in the cylinder, and a first seal member provided between an inner surface of the cylinder and an outer surface of a plunger to prevent a liquid in the pump chamber from leaking to the outside, the inner surface of the cylinder and the outer surface of the plunger are out of sliding contact with each other, and a second seal member is interposed between the first seal member and the pump chamber. During a suction stroke, the second seal member is in sliding contact with the outer surface of the plunger to prevent dust, which is produced as the result of wear, from flowing to the pump chamber from the first seal member side. During a discharge stroke, a minute gap is formed between the second seal member and the outer surface of the plunger.

Abstract: A multi-stage automotive fuel pump includes a casing and motor located within the casing for driving primary and secondary pumping sections, with the primary and secondary pumping sections sharing a common wall which axially separates primary and secondary rotary pumping elements and which houses a fuel transfer for moving fuel from the primary into the secondary pumping sections in a manner which avoids generation of turbulence and cavitation.

Abstract: In order to enable only condensate to be discharged/fed under pressure without leaking out steam independently of the respective pressures at the primary side and at the secondary side, in a condensate discharging device comprising a condensate receiving chamber provided with a condensate inlet opening and a condensate outlet opening as well as an operating high pressure fluid inlet and outlet; a float disposed within the chamber and adapted to rise and drop along with the water level; an inlet valve connected to the float and used for opening and closing the inlet; an exhaust valve connected to the float and used for opening and closing the outlet; and check valves, one arranged at the condensate inlet opening and the other at the condensate outlet opening, the improvement comprises a valve mechanism connected to the float to open and close the outlet opening independently of the check valves, the valve mechanism being adapted to close the condensate outlet opening when the water level is low, and to open th

Abstract: The invention relates to a multiple-flow liquid ring pump having a rotor housing (1) which surrounds the rotor of the pump and on each of the two end sides of which there is arranged a side shield (2 or 3) which extends at least partially beyond the rotor housing (1) in radial direction, the two side shields (2 and 3) extending in each case beyond the rotor housing (1) at the same point with respect to each other of the circumference, and each side shield (2 or 3) having in its projecting region (corner 16) an inlet opening (7) and an outlet opening (8) on the side facing the corresponding other side shield, in which pump the opposite lying inlet and outlet openings (7 and 8) of the side shields (2 and 3) are connected to each other by connecting tubes (9) that extend parallel to the rotor housing (1), and a suction opening (13) for a feed line and a delivery opening (14) for a discharge line being provided.

Abstract: A canned motor pump having an enclosing casing on the inside of a stator and a rotor on the inside of the enclosing casing, in which the interior parts of the enclosing casing communicates with the interior parts of a pump. Surfaces of supported portions on a shaft of the rotor which are contacted with the liquid flowing on the inside of the enclosing casing are treated by electrolytic polishing so that a liquid liable to polymerization or an adherent liquid can normally circulate as a circulating liquid for cooling a motor, and furthermore supporting portions which support the shaft contain bearings produced from fluororesin or glass-fiber reinforced fluororesin.

Abstract: A hydraulic pump including a housing having a housing bore with a piston sliding in an axial direction in the bore and a pump chamber being defined in cavity adjacent one end of the piston. A piston drive mechanism is provided in a housing chamber defined in the bore adjacent the other end of the piston. Piston return springs are mounted in the pump chamber biasing the piston towards the piston drive mechanism. An inlet valve is arranged in the pump chamber opening and closing an axial bore in the piston connected to an inlet passage. An outlet valve is set on a downstream side of the pump chamber opening and closing an outlet passage. Two elastic seal members are mounted around a circumference of the piston respectively sealing an area between the pump chamber and the inlet passage and an area between the inlet passage and the housing chamber.