Abstract: Forceps for pushing apart adjacent vertebrae that has two parallel pins connected or connectible to a pair of jaws, one pin being displaceable towards and away from the other pin by the moving of a guide when the jaws are being spread apart, the guide ensuring that the pins remain parallel to one another during such movement.

Abstract: This invention relates to a nose pad assembly for use in eyeglasses. The nose pad assembly comprises a plastic nose pad and a mounting arm to be secured to the frame of the eyeglasses. Detent means are provided for resiliently interlocking a depending free end portion of the mounting arm with a boss on the rear of the nose pad so as to permit a limited pivotal movement of the nose pad about said free end portion. In one embodiment of the invention the boss of the nose pad is formed with a socket hole, which is open at its top end and closed at its bottom, and the detent means consist of a plurality of vertically spaced apart ball sockets formed in the elastic boundary surface of said socket hole and of a ball, which is formed at the extreme end of the free end portion of said mounting arm and interfits with said ball sockets.

Abstract: It is a detachable swivelling structure, which is particular a swivelling structure for mounting a swivelling Christmas tree. The swivelling structure comprises a round base, four supporting legs to be assembled at a perpendicular angle one another or disassembled, a lid, and a turning base. After the four supporting legs being assembled together, they are mounted under the round base so as to have a larger base to hold the swivelling tree in a stable manner.

Abstract: Method of producing monolithic mainly cementbound concrete in the density range of 650-1300 kg/m.sup.3, preferably of 800-1200 kg m.sup.3 with substantially good placing properties both for building in situ and prefabrication. The concrete consists of cement mortar with an air-void volume of 7-18% of the total concrete volume and aggregate consisting of lightweight organic or inorganic material. The smaller particles of the aggregate should be spherical, exceptionally lightweight, hydrophobic and durable against deformation in order to reduce the water content without changing the consistency of the concrete.

Abstract: The stem for the tibia part of knee joint endoprostheses has the features that its cross-section is made arcuate at the back and angular medial ridge with the apex pointing in the direction of walking.

Abstract: A clamp for adjusting the throughflow cross-section of a tube, in particular for medical devices intended for once-only use, essentially comprises a U-shaped elongted clamp housing and a clamping roller longitudinally displaceable in the housing, as well as a clamping area angularly positioned with respect to the housing cross-piece, narrowing in the longitudinal direction of the housing and intended to establish the required throughflow cross-section of the tube. To prevent readjustment of a throughflow cross-section once this has been set, provision is made for the clamping area forming the throughflow cross-section of the tube to be formed by means of an annular notch at one edge of the clamping roller in conjunction with a housing sidewall, whilst forming a narrow acute-angled triangular cross-section which supports the tube on all sides.

Abstract: A fuel injection nozzle for supplying fuel to a compression ignition engine includes a holder which accommodates a spring which biases the valve member of the nozzle to the closed position. A spring abutment abuts against a surface of the holder and a blind bore is formed in the holder in the vicinity of the surface. A transducer is located in the bore and produces an electrical signal when an increase in the stress in the spring occurs as the valve member is moved to the open position.

Abstract: A buckle for a straining device, having a direction-changing bar adapted for the straining device, the bar extending over an area of an unobstructed space and arranged to permit the straining device to be passed through in a doubled-over form and a clamping stop interacting with the straining device, wherein the bar is formed from a plate which is bent over so that the direction-changing bar on the plate and supported by it is supported above the unobstruced space in the buckle. Among other things, the buckle is made from few parts and which function effectively. Extending between the direction-changing bar and the plate are uprights which are arranged to maintain associated direction-changing bars supported at all times at a level above the unobtstructed space in the buckle so that a part of the straining device can be passed freely around the bar in question.

Abstract: A method of generating a sterilizing vapor for use in a vapor sterilizing ocess, the method including the steps of burning a fuel selected from the group consisting of combustible gases and combustible aerosols, whereby hot combustion gases are generated, and introducing a liquid into said hot combustion gases, whereby the liquid is evaporated to form the sterilizing vapor.

Abstract: Device for a subject which is moving over the land is adapted to provide a mounting for a map of the immediate vicinity and having input signal means representing distance travelled and signal means representing changes of direction of travel, and responsive means which will move an object over the surface of the map to continuously represent the position of the subject with relation thereto.

Abstract: This invention relates to an abrasive tool for grinding and polishing. A disk, which may consist of an abrasive disk or may carry a buffing pad consisting of an abrasive-containing woven fabric, is connected to a shaft that is adapted to be gripped by a driving chuck of a hand-held drilling machine or a hobbyist's machine. The shaft comprises a flexible shaft section and the tool is provided with means for reliably stiffening the shaft even during an operation at high speed and under stong abrasive forces. Besides, the tool should be usable as a grinding tool having a smaller grinding surface. An end flange is screwed to a first rigid shaft section and is disposed on the front face of the disk. A bowl which has a smaller radius than the disk is disposed on the rear of the disk.

Abstract: A fuel injection nozzle of the inwardly opening type has a valve member which is movable against the action of a spring by fuel under pressure to allow fuel flow through an outlet. The valve member is coupled to a piston which is slidable within a cylinder formed in a part. The cylinder forms a damping chamber from which there is a leakage path and the part is axially adjustable to determine the degree of restriction.

Abstract: A sensing element is constituted by a single or plurality of p-n junctions alternating between the foward and reverse states. A pulse circuit applies different magnitudes of foward and reverse currents to the sensing element. A high reverse current is applied for a self heating interval and a small foward current is applied for a sensing interval.

Abstract: A shirt folding machine, comprising stroke adjustable neck opening fixation plates, revolvable shirt folding mold board, and ironing board; the shirt to be folded being slipped on the neck opening fixation plates that are arranged to relatively close to each other, by means of the separation of said neck opening fixation plates the neck opening of the shirt to be folded being fully stretched; by means of the clamping effect of the shirt folding board and the ironing board the shirt to be folded being firmly clamped therebetween for ironing process; by means of the support of the shirt folding mold board, the protruding portion of the shirt clamp being well folded, in accordance with the configuration of the shirt folding mold board, into preferred rectangular arrangement for distribution on the market.

Abstract: A microfilm aperture card having a window for mounting a microfilm, and an adhesive tape which extends around the opening in the card, and covering the edges of the microfilm and the window opening, the adhesive tape being adapted to carry identification indicia.

Abstract: A pelvis part prosthesis comprises an essentially hemispherically-shaped shell portion provided with two formed appendices, each of which has a positioning aperture and two connection elements connected to the appendices, and each being provided with a pin inserted with a self-locking tight fit in the positioning apertures. The connection elements are preferably designed as curved plates. The material layer, adjacent to the residual bone material of the pelvis, of the aforementioned parts of the prosthesis, may be in the shape of an open-cell structure to allow the bone material to grow into said structure.

Abstract: A fuel injection pump includes a plunger reciprocable by an engine driven cam in a bore from which extends an outlet connected in use to a fuel injection nozzle. A spill valve is utilized to control the fuel flow to the nozzle by diverting fuel from the outlet to a low pressure source. In order to prolong the valve closure period a cylinder is provided in which is located a spring loaded piston. When the valve is closed a predetermined volume of fuel is passed to the cylinder to achieve displacement of the piston after which delivery of fuel takes place through the nozzle. The period of closure of the valve in order to achieve delivery of a specific volume of fuel through the nozzle is therefore extended.

Abstract: In the case of a filtering separator, the housing of which is divided by a perforated partition into a filter space and a pure gas space the filter space being supplied with unrefined gas, receiving filter elements which are to be cleansed by counterflow flushing and/or agitation, and having a bottom dust collector trough incorporating a dust extraction conveyor, the dust obtained being partly fed to the filter elements again with unrefined gas, the dust collector trough is provided in the area of its dust extraction conveyor with at least one opening leading to an unrefined gas guiding space which is situated at a lower level and connected to the filter space at the top or side, the lower section of which has disposed in it a loosener for the downwardly dropping dust, via which the incoming unrefined gas flows into the unrefined gas guiding space.

Abstract: A multistage rotary pump, which comprises a substantially closed pump body having a jacket surrounding the pump body in spaced relationship for the purpose of forming an annular return volume, a base element comprising suction and pressure connecting pieces and a top element comprising the driving motor. The jacket is provided in both its terminal portions with a peripheral contact shoulder which is acted upon in each case by an annular clamping arrangement, the clamping arrangement in question being connected on the other hand to the base element and top element, respectively. A coupling device of this nature is preferentially applied in the case of in-line rotary pumps.

Abstract: A fuel injection pumping apparatus for supplying fuel to an engine includes a high pressure pump which receives fuel from a low pressure pump by way of an angularly adjustable throttle member. The throttle member is connected to the armature of an electromagnetic actuator by means of a connecting rod. A transducer is provided which includes a core carried by the connecting rod intermediate the ends thereof and a pair of springs act to oppose the movement of the rod and throttle member by the actuator.