Abstract: In a displacement machine for compressible media having at least two rotors (14a-c) which are configured as profiled bodies and whose profiles engage with one another in the manner of gearwheels during rotation, the individual rotors are respectively driven by their own electric motors (9a-c) and are kept synchronous in rotational speed and angular position by electronic closed-loop and/or open-loop control units (1; 25a-c) in accordance with the transmission ratio of the displacer unit stage. The electronics can be employed for monitoring further operating data of the pump and also for matching the pump output by changing rotational speed. It can also be used as an overload protection. The rotational speeds and rotational attitudes of the rotors are controlled individually and independently of one another, the required attitude values being specified to the individual control units (25a-c) by means of a main control unit (1).

Abstract: The present invention relates to an apparatus for dewatering mixtures of fibrous and liquid materials wherein at least one pair of mutually opposite pressure elements forms a pressure gap through which a continuous web formed of the mixture of fibrous and liquid materials is passed jointly with at least one endless belt and wherein the pressure elements are set up in a press frame, at least one pressure element being movable in such frame, there being provided at least one distance adjustment means for adjusting at least one pressure element and thereby the magnitude of the pressure gap or the pressure intensity. The invention is characterized in that at least one distance adjustment means (17) is installed solely between the mountings (4,15; 5,16) of the pressure elements (2,3).

Abstract: Disclosed herein is a radiographic marker system which includes a radiopaque marker mounted on a thin, flexible adhesive label. In one embodiment, the adhesive label has a central portion, the adhesive side of which is covered by a cut-out portion of the base tape to provide for comfortable removal of the marker after use. In another embodiment, the adhesive label has a gripping tab to facilitate removal from a base tape upon which the marker is supported before use, and to facilitate removal from a patient after use. The gripping tab is formed by a projecting tab of the label combined with a cut-out portion of the base tape which covers adhesive on the projecting tab. A method of making a radiology marker system according to the invention also is disclosed.

Abstract: An eyeglass attachment, for example a tinted lens, is provided with a circumferential groove which is engaged by a tension thread. A plurality of clips are mounted on the tension thread so as to be resiliently biased against the edge of the lens. The clips have outwardly extending arms with projections which engage the opposite sides of the frame of an eyeglass on which the tinted lens is to be installed.

Abstract: A progressive power ophthalmic lens having a spherical distance viewing area, a progressive power portion with a decreasing radius of curvature along an umbilic meridian, and a spherical near viewing area. Power distribution functions are optimized for smooth transition along the principal directions of gaze. A statistically smoothed polynomial function of the general form Pm=b.sub.1 +b.sub.2 X+b.sub.3 X.sup.2 +. . . +b.sub.9 X.sup.8 defines the mean power at any point on the lens surface to regulate curvature variation. Thereby providing continuity of the visual field at the boundaries of the principal lens zones and creating an integrated visual field as the eye traverses the lens.

Abstract: An injection molded grab bar for mounting to a surface comprising (a) at least one substantially rigid elongated tube having first and second end portions and an intermediate portion therebetween, wherein the diameter of the outer surface of the intermediate portion varies along the length of the elongated tube, and the first and second end portions each elongated tube have a plurality of splines on the outer surface thereof; and (b) at least one substantially rigid, integrally formed surface connector for mounting the grab bar to the surface having, at least one substantially tubular portion, wherein inner surface of at least one substantially tubular portion has a plurality of opposite splines which engage corresponding splines on the outer surface of the first and second end portions of each elongated tube to fixedly join the elongated tube to at least one surface connector.

Abstract: The invention is a method and apparatus for calibrating a gap sensing probe (12) in a refiner having first (76) and second (80) grinding plates facing each other and supported by respective first and second plate holders, each grinding plate having a face (78, 82) defining a grinding gap (86). The gap measuring device, which is secured within one of the plates, includes a sensor probe (12) for measuring gap width data having a substantially cylindrical tip (14) with a flat frontal portion (16), an attached conical portion (18) and a longitudinal axis (20) therebetween. A cable (22) is electrically connected to the conical portion of the probe, for transmitting the gap width data. A protective sleeve (24) can be positioned around and contact the cylindrical tip, wherein the flat frontal portion of the tip is exposed through the sleeve.

Abstract: A novel fuel pump arrangement comprises cam driven low and high pressure reciprocating plunger pump units. The fuel pump has rotary drive means, a high pressure pump with a pump body which defines a pumping chamber with an annular arrangement of a plurality of pairs of bores extending radially outwardly from a cam axis. A pumping plunger is mounted in each pumping plunger bore for reciprocation. The fuel pump also comprises a single transfer pump for transferring fuel under pressure to the pumping plunger bores of the pumping chamber. This transfer pump includes a single transfer plunger mounted within a transfer plunger bore for reciprocation to provide alternating intake and transfer phases of operation of the transfer pump.

Abstract: Apparatus for transferring bobbins containing packaging material to, and/or removing the cores of empty bobbins from, a receiving device of a cigarette packaging machine includes a transfer station having a chassis, an axle mounted on the chassis for rotation about an axis angularly oriented with respect to the axes of incoming full bobbins, at least a first arm affixed to and angularly extending from the axle and a gripping device movably supported on each arm. Full and empty bobbins are transported to and from the transfer station with their axes of rotation oriented generally transverse to a movable support plate which may be positioned for cooperation with the gripping devices.

Abstract: An adjustable management grommet for routing cables, wires, and the like, through a surface having an integrally formed body with a cylindrical shell and a planar wall at one end thereof, and an integrally formed circular cover rotatably mounted in snap fit fashion at the center of the wall of the body. Both the wall of the body and the cover have sector-shaped apertures which can be aligned by rotating the cover to define an adjustable opening for easy installation and removal of plugged cabling. Detents projecting from the cover successively engage dimples on the wall of the body as the cover is rotated to define a plurality of discrete opening sizes to snugly accommodate installed cabling.

Abstract: An electron gun for producing a beam of electrons has an elongated, linear thermionic cathode and a focusing electrode. The opposite ends of the cathode are engaged by adjustable holders which enable the spatial separation between the cathode and focusing electrode to be easily varied. The focusing electrode is electrically isolated from the cathode whereby fine tuning of the electron beam may be accomplished by varying the potential difference between the focusing electrode and cathode.

Abstract: The ink transfer decal comprises a carrier sheet having a dimensionally stable base and a coating on the base defining an upper surface of the carrier sheet. The upper surface has a non-tacky, smooth matte finish at ambient temperature. A film of dried thermoplastic ink having at least one color, is printed directly on and adheres to the upper surface of the carrier sheet to form a reverse image graphic. A deposit of thermoplastic adhesive covers the ink, thereby constituting an ink decal for transferring the reverse image graphic to a substrate.

Abstract: An extractive distillation process using a high boiling polyol such as glycerol is employed for separating high purity catechol, 3-methylcatechol and 4-methylcatechol from a high boiling, pitch-like dihydric phenol fraction. Fractional distillation first separates an impure overhead mixture of the catechol and 3-methylcatechol and an impure 4-methylcatechol bottoms. The impure overhead is extractively distilled to remove impurities and then extractively distilled again to separate the catechol and 3-methylcatechol. This produces a pure overhead of 3-methylcatechol and a bottoms of catechol and polyol which is distilled to recover the catechol and recycle the polyol. The impure 4-methylcatechol is distilled to remove residual material and then extractively distilled to remove impurities. The resulting mixture of 4-methylcatechol and polyol is distilled to recover the pure 4-methylcatechol and to recycle the polyol.

Abstract: A ground clamp for clamping to a cable shield to provide a round connection employs a U-shaped yoke. A keeper has a driver which threadably engages thread surfaces at the interior side of the yoke legs. The keeper has a clamp jaw which may be compressively engaged against a cable shield received in an aperture defined by the yoke. The yoke connects to a common ground point via a ground connector member. The ground connector member has a grounding portion which may comprise a flexible ground connector or a rigid conductive plate. A bracing portion of the ground connector member is connected to the grounding portion by a ramp portion which projects laterally towards the cable. The bracing portion includes two arms which project laterally from a center connector portion. The connector portion and arms define a horseshoe-shaped stress relief clamp which may be crimped into engagement with the cable to mechanically connect the ground clamp with the cable outer jacket.