The invention provides a device for weighing slaughter products. The device comprises conveying means for conveying the slaughter products, the conveying means comprising a frame, two pulley means which are connected to the frame a fixed distance apart, being rotatable about two respective first vertical axes of rotation, an endless flexible conveying element which is passed over the two pulley means, which conveying element extends along a rectilinear weighing path between the two pulley means, a guide extending along a conveying path, hooks for the slaughter products, which hooks are connected to the conveying element at regular intervals and which are each provided with a guide elements for guiding cooperation with the guide. The device further comprises weighing means for weighing slaughter products that are present within the weighing section and reducing means for reducing tensile stress in the conveying element insofar as it extends in the weighing section, said reducing means comprising transmission means that are operative between the two pulley means. The transmission means comprise a gear transmission with at least two meshing gears which are rotatable about respective second vertical axes of rotation, wherein the second axis of rotation of one of the at least two gears is in line with a first vertical axis of rotation, and wherein the second axis of rotation of another of the at least two gears is in line with the other first vertical axis of rotation.

A segmented pulley transmission is provided. A pulley assembly is rotationally mounted on an axle. The pulley assembly includes a core pulley having a first set of mating features on a peripheral surface thereof. A pulley segment set comprises a number of pulley segments slidably mounted in the pulley assembly and arranged in a ring concentric with the core pulley. The pulley segments are individually actuatable out of the pulley assembly into an engaging position and into the pulley assembly into a non-engaging position. The pulley segments have a second set of mating features on an peripheral surface matching the first set of mating features. An endless drive member has corresponding mating features on an inside surface for engaging the first and second sets of mating features of the core pulley and the pulley segments in an engaging position. Contact between the endless drive member and a core pulley defines a contact zone. An actuator actuates the pulley segments between the engaging and non-engaging positions when the pulley segments are outside of the contact zone. One of the key pulley segments in the pulley segment set is a key pulley segment that is positioned relative to the core pulley such that when the key pulley segment is actuated to the engaging position and rotated into the contact zone, the corresponding mating features of the endless drive member engage the first set of mating features of the core pulley and the second set of mating features of the key pulley segment without the introduction of significant slack or tension.

A drive wheel for a belt tensioner is adapted to be coupled to a belt reel and includes an external tooth system including plural teeth distributed along the circumference. The teeth are inclined in a first circumferential direction and/or the teeth have at least one end face facing away from the central axis of the drive wheel and being inclined in a first circumferential direction and/or the clearances between neighboring teeth are not symmetrical with respect to planes defined by radial and axial directions. The teeth have no symmetry with respect to planes extending tangentially relative to the circumferential direction.

A gear includes teeth 3 to be engaged with teeth of a corresponding gear to transmit a rotational motion, in which a form (b) of a tooth root side of each tooth 3 includes: a first curved surface c which smoothly connects with a tooth surface a having an involute curve and has a profile represented by a curve which is convex in a direction opposite to the involute curve of the tooth surface a; and a second curved surface d which smoothly connects with the first curved surface c and has a profile defined by a quadratic function having a curve being convex in the same direction as that of the first curved surface c. Therefore, a stress generated on the tooth root side at the time of engagement with the teeth of the corresponding gear can be reduced, and the strength of the teeth can be increased.

A method for designing a spline surface contour of a roller-type wave-motion includes of the steps of slicing radial movement track of a roller between a cam and a spline aperture and circumference rotation track at equal proportion at equal time intervals to sequentially obtain circle centers and points of tangency of the track circles during movement of the roller; connecting the points of tangency to form a unit cam circumference segment of a cam periphery in order to draw and form a single-sided tooth flank contour; and forming a correspondent side tooth flank contour by mirroring and projecting the single-sided tooth flank contour. A method of forming a spline wheel contour and a method of forming a cam periphery are obtained.

A drive transmission mechanism includes a first ratchet mechanism, a second ratchet mechanism, and a link member. The first ratchet mechanism includes a first drive input gear, a first drive output gear, and a first coupling member. The second ratchet mechanism includes a second drive input gear, a second drive output gear, and a second coupling member. The link member, due to a thrust movement of the first coupling member in a direction separating from the first drive output gear, causes the second coupling member to move in a direction approaching the second drive output gear, and the link member, due to a thrust movement of the second coupling member in a direction separating from the second drive output gear, causes the first coupling member to move in a direction approaching the first drive output gear.

A sprocket adjuster for adjusting a sprocket of a chain drive includes a bearing journal, which includes a free end and a fixed end, a rotary bearing arranged on the bearing journal, and a sprocket guided on the rotary bearing. The bearing journal has a first external thread region and a second external thread region, wherein a threaded nut is arranged on each of the external thread regions and by means of which the rotary bearing is clamped on the bearing journal between the external thread regions.

The gear mechanism includes a gear shaped to have a bottom land, a first tooth flank connected to the bottom land, a second tooth flank connected to the bottom land, a first tooth face connected to the first tooth flank, and a second tooth face connected to the second tooth flank. The bottom land is curved, a radius of curvature of the first tooth flank is greater than a radius of curvature of the second tooth flank, and parts of the first tooth flank and the second tooth flank connected to connection points with the bottom land are curved such that a distance of each of the parts from a shaft center of the gear decreases toward the connection points and that a gradient of each of the parts decreases toward the connection points.

A sprocket assembly includes a carrier and a plurality of sprockets. The carrier has a central axis. Each of the sprockets has a different number of teeth and is formed with a central through hole. The carrier extends into the central through hole of each of the sprockets such that the sprockets are disposed on an outer periphery of the carrier and are disposed along the central axis. At least one of the sprockets is coupled to the carrier by a weld that is formed via a solid-state welding technique.

A sprocket assembly includes a carrier and a plurality of sprockets. The carrier has a central axis. Each of the sprockets has a different number of teeth and is formed with a central through hole. The carrier extends into the central through hole of each of the sprockets such that the sprockets are disposed on an outer periphery of the carrier and are disposed along the central axis. At least one of the sprockets is coupled to the carrier by a weld that is formed via a solid-state welding technique.