Abstract: Actuators for adjustments of office and assembling work tables, hospital beds, windows, process valves are some examples on applications where the current gear technology gives noise problems and needs space. Friction gears give silent running but are sensitive for alignment errors of the output shaft. These errors give changes in the gear geometry which cause micro slip and bad efficiency and shorten the gear life time. This friction gear invention is unsensitive for alignment error of the output shaft. The theoretical optimal gear geometry is maintained even when the screw is oscillating during running. FIG. 3a shows a well known gear principle. FIG. 3b shows how “micro slip” will occur when the output shaft, to which the screw is fitted, is tilted for example 2 degrees. FIG.

Abstract: An eccentric gear for transferring a torque in one single step and at a high gear ratio, from a driving element to a driven element. In a stationary housing there is an outer gear ring which co-operates with an inner gear ring which in turn is co-rotatively connected to the driven element that is mounted in bearings via a stationary bearing. The inner gear ring is eccentrically movable to generate along the outer gear ring, while only some teeth are in engagement with the outer gear ring. Thereby, the inner gear ring, which performs a nutating motion, is connected to a thin rod which at a free end has a male element that is in engagement with a seat formed with an analogous cross-sectional shape located deeply within the driven element. By this construction, the gear attains an extremely short length of construction, at the same time as the sound level during operation is reduced.

Abstract: A device for transmitting a torque between two rotational elements (5, 2), includes an inner gear ring (24) that via only a few teeth engages an outer gear ring (23) being member of a cover (17) that is connected with one of the rotational elements (2). The axis of symmetry (A) of the gear ring (24) is oblique relative to the axis of symmetry (B) of the rotational elements (5, 2). By the aid of an eccentric portion (27) the gear ring disc (21) is imparted to perform a planetary motion along the outer gear ring (23), whereby a transmission element, that supports the inner gear ring, is subjected to a nutating motion. Between a stationary member (12) and the gear ring disc (21) a bellows (13) is provided, said bellows (13), in a hermetically tight way, separating the spaces (14,15) where the rotational elements (5, 2) are located.

Abstract: An eccentric gear comprises two differently large gear rings (6, 7), of which an outer ring (6) has a certain number of inwardly directed teeth and an inner ring (7) has a smaller number of outwardly directed teeth, of which only a few engage with the outer gear ring, in that the inner gear ring is eccentrically mounted in bearings. The inner gear ring (7) is integrated with a casing part (8) whose geometrical axis of rotation (A) is oblique relative to an axis of symmetry (B) through the center of the outer gear ring (6). During the generation of the inner gear ring, the casing part is submitted to a nutating motion, during which the axis of rotation (A) of the casing part moves as a generatrice along an imaginary cone, around a cone apex (C) that is axially distanced from the gear rings (6, 7).

Abstract: A dynamometric wrench comprises a handle part (1) and an elongated torsion body (2) which at a first end (3) is co-rotatively connected with the handle part (1) and at the opposite end (4) has means for connecting the torsion body (2) with a screw or similar. In the region of the latter end (4), the torsion body (2) is co-rotatively connected with a socket- or ring-like part (8) which is rotatable relative to the handle part (1) when the body (2) is submitted to torsion due to it being loaded with a torque. A stop element (10) is connected with the handle part (1), which element is arranged to cooperate with at least one shoulder (12') on the socket part (8), more specifically in such a way that the stop element is brought into contact with the shoulder when a predetermined, optimal torque has been applied upon the screw, which torque confers an elastic, but not a plastic distortion to the torsion body.

Abstract: An eccentric gear comprises first and second gear rings (7,10) of which the one (7) has internal, straight cogs and the other (10) a smaller number of external cogs. At least one gear ring has a conical form with a large end (A--A) and a small end (B--B), the other gear ring (10) having a smaller pitch diameter than the first one (7) and being eccentrically mounted in bearings relative to the first one. Axes of symmetry (24,25) of the respective gear rings form an angle (.alpha.) with each other. The contact points or the locations of engagement between the flanks of the cogs in the one gear ring and the opposed flanks of the cogs in the other gear ring are substantially located along a helical line which extends in axial direction between said large and small ends.

Abstract: A mechanism which translates in an eccentric gear a slow eccentric rotational movement of a gearwheel which has a high planetary rotational speed to centric rotation. The invention is characterized by a plate (22) which includes apertures in which axially extending cams (24a, b, 25a, b) are received. The cams are mounted in pairs on the gearwheel and on a disc (23) carried by the gear output shaft and are radially movable in relation to the plate (22). According to one embodiment, the plate (22) includes four apertures, in the form of radially open grooves.

Abstract: A mechanism for insertion into one end of a distribution cylinder in printing machines for converting the rapid rotational movement of the cylinder to a slow reciprocating cylinder movement. The other end of the distribution cylinder is journalled in a stationary shaft fixedly mounted in a printing machine frame. The mechanism is mounted above the stationary shaft and includes a cylinder (2) which is intended to be fixed in the distribution cylinder. The cylinder (2) is journalled for rotation around the stationary hollow shaft (1). A camming groove element (8; 8A) is fixed axially on the stationary hollow shaft (1) and is journalled for rotation about the symmetry axis (24, 25) thereof. A runner-camming groove-unit (13, 9) facilitates the slow, relative rotation of the camming groove element to an axial reciprocating movement of the cylinder (2), therewith causing the distribution cylinder to move axially backwards-and-forwards.

Abstract: A bearing structure is provided for a linear adjusting device (15) for a cylinder such as, for example, a plate cylinder (3) of a printing press. A linear adjusting device has an outgoing linearly adjustable shaft (16) and is coupled to one of the journals (8).

Abstract: An eccentric gear comprising a stationary gear wheel (2) and an eccentric gear wheel (9). The eccentric wheel is freely mounted on the input shaft and is driven round by eccentric means (4, 6) causing the eccentric wheel to roll round the internal teeth on the stationary wheel. A driving dog transmits the slow rotation of the eccentric wheel to an output shaft (14). Distinguishing for the invention is that the teeth are corrected such that the eccentric wheel is adjusted with the aid of the two eccentric means such that there is practically no backlash. A computer calculated least clearance between respective top lands on the teeth is obtained with respect to tooth meshing. The eccentric means comprises two cylindrical sleeves arranged eccentrically one in the other. At one end part of each of the sleeves, one of which is arranged eccentrically in the other, there is a radially outstanding tongue (5, 7).

Abstract: Angle transducer unit of the multiturn measuring type for absolute measurement of the angular position of a rotatable shaft. A first transducer (10) of the absolute angular measurement type with a drive shaft (3) is non-rotatably mounted on the rotatable shaft. A second angle transducer (11) of the absolute angular measurement type has a driven shaft (4). There are gear wheels (1,2) mounted on the drive and driven shafts, these gear wheels being mutually in mesh to form a gear for up or down gearing of the rotational rate of the drive shaft. The two angle transducers, e.g. resolvers, are intended for being conventionally connected to an apparatus for measuring the differential angular position of the shafts. Novel to the angle transducer unit is that the gear wheels include an internally toothed gear wheel (2) and an externally toothed gear wheel (1).

Abstract: A leg prosthesis with a tube (10), and adjusting head (11) arranged in the proximal end (4) of the tube. First means (16) allow adjustment of the angular attitude of the tube relative an imagined load line. Second means (12,13) allow translatory movement of the tube (10) relative the adjusting head (11). Fixing means fix the tube in a desired translated position relative the sleeve. The first and second means are both situated on the adjusting head at the proximal end of the tube, and both allow basic adjustment of the tube with the prosthesis in position of the wearer.

Abstract: A translation element, a so-called driving dog or transmitter, for translating the rotation of the center of gravity of an excentrically mounted excentric gear wheel (9) to a first shaft (14) when said wheel simultaneously executes a planetary movement about a second shaft. A rigid body (10,25) which is pivotably mounted about first pins (11, 12) has axially directed, tooth-like projections (26, 27) fitting with negligible play into two radially counter-directed apertures (22, 23) in said wheel (9) for permittinhg said projections to execute a radial reciprocally gliding motion in the apertures, simultaneously as they execute a rolling motion in said apertures, while the rigid body pivots about the first pins.

Abstract: The invention relates to an artificial hand or prosthesis with a carcase, a palm and a finger pair, a thumb and a link (20). Distinguishing for the invention is that the movement pattern of the thumb in relation to the movement of the finger pair, the pattern being provided by the palm on which the thumb is rigidly attached being pivotably connected to the carcase about a wrist turning point (B) and by the finger pair being connected to the palm via the finger joint turning point (A). A link mechanism comprising four joints (inter alia 29, A, B) controls the gripping movements of the prosthesis, and is driven by an electric motor located in the palm in the preferred embodiment.