Abstract: The present disclosure provides a belt auto-tensioner that automatically adjusts tension of a belt for rotational force transmission between an engine and auxiliary machinery components, the belt auto-tensioner comprising: an upper cover that is provided with a pulley being in contact with the belt and has a receiving space provided so as to be spaced apart from the pulley; a tensioner body that is inserted into the receiving space, and provides friction attenuation to the upper cover when the upper cover rotates in a direction opposite to a direction of tension applying engagement by the tension of the belt; and a friction unit that is installed on an inner surface of the receiving space, and is formed so as to rub against an outer surface of the tensioner body when the upper cover rotates.

Abstract: A rope for a hoisting device, which rope is belt-shaped and includes several load bearing members spaced apart in the width direction of the belt-shaped rope and embedded in a common coating, each of the load bearing members including several load bearing strings twisted together. The load bearing strings are made of composite material including reinforcing fibers embedded in polymer matrix.

Abstract: A hoisting device rope has a width larger than a thickness thereof in a transverse direction of the rope. The rope includes a load-bearing part made of a composite material, said composite material comprising non-metallic reinforcing fibers, which include carbon fiber or glass fiber, in a polymer matrix. An elevator includes a drive sheave, an elevator car and a rope system for moving the elevator car by means of the drive sheave. The rope system includes at least one rope that has a width that is larger than a thickness thereof in a transverse direction of the rope. The rope includes a load-bearing part made of a composite material. The composite material includes reinforcing fibers in a polymer matrix.

Abstract: An elevator installation includes a shaft in which at least two elevator cars are arranged one above the other and are capable of travel upward and downward in a vertical direction separately from one another, wherein each elevator car is assigned a travel drive. The elevator cars are capable of travel with large and small spacings to one another without the risk of collision by coupling at least two elevator cars together by way of a variable-length, releasable coupling device, wherein the spacing between the coupled-together elevator cars can be varied, in a manner dependent on the relative speed between the two elevator cars, with the aid of at least one of the travel drives.

Abstract: An elevator includes at least one elevator car and a counterweight which are at least partly suspended on hoisting ropes and a drive machine driving a traction sheave engaging the hoisting ropes for moving the elevator car along guide rails in an elevator shaft, which elevator further includes a compensation rope. The compensation rope is led upwards to an upper part of the elevator shaft and from there aside to a balancing area located aside of the travel paths of the car and counterweight. This solution is particularly adapted for high travel elevators facing horizontal forces during operation as e.g. ship elevators. Collision of compensation ropes are avoided in the area below the car and counterweight paths which could affect the elevator safety when subjected to high horizontal forces, e.g. during rough sea.

Abstract: A tensioning or guide rail for a chain drive, in particular for a chain drive of an internal combustion engine, comprises two spaced-apart contact sections and one non-contact section arranged therebetween, the contact sections each having a sliding surface which is adapted to be brought into contact with a chain, and the non-contact section interconnecting the two contact sections as a support structure. Such a rail is to be configured such that the installation space available can be utilized more advantageously. To this end, the support structure of the non-contact section comprises an opening extending continuously from a front to a rear of the tensioning or guide rail and separating the contact sections provided with the sliding surfaces. The invention also relates to an endless drive of the type in question.

Abstract: A polygon compensation coupling system for reducing a polygon effect in a chain driven system is disclosed. The polygon compensation coupling system may include a chain sprocket and a main drive in engagement with the chain sprocket, such that the engagement defines a compensation curve to reduce the polygon effect.

Abstract: A blocking configuration of an oil pressure circuit hole includes a plug screwed together with an aperture end portion of the oil pressure circuit hole provided to a main body. The plug includes: a shaft portion; an external thread portion disposed on a leading end of the shaft portion; an O-ring mounted on an outer periphery of a base end portion of the shaft portion and pressed between the outer periphery of the shaft portion and an inner periphery of the oil pressure circuit hole to seal them; a flange portion having an external diameter larger than that of the shaft portion and disposed on a part of a base end side of a storage groove on which the O-ring is mounted; and a polygonal column-shaped head portion on which a tightening tool is mounted and disposed on a part of a base end side of the flange portion.

Abstract: A plug assembly configured for installation in a hammer assembly, the plug assembly comprising a cylindrical plug and an anti-rotation component. The cylindrical plug may include a plug head and a plug body. The plug head may include a first hole and a second hole opposite the first hole, each hole extending from the outer surface of the plug head. The anti-rotation component may include a first linear portion and a second linear portion. The first linear portion and second linear portion may both be configured to fixably engage with the hammer assembly.

Abstract: Various embodiments of the present disclosure provide a winch having a user-adjustable or variable initial mechanical advantage. In one embodiment, the winch of the present disclosure has an outer drum diameter adjustable between a minimum outer drum diameter, which is associated with a maximum initial mechanical advantage provided by the winch, and a maximum outer drum diameter, which is associated with a minimum initial mechanical advantage provided by the winch. This provides a user with the flexibility to adjust or vary the mechanical advantage of the winch to the user's preference.

Abstract: A device for activating and deactivating a safety apparatus of an elevator car during assembly of an elevator installation includes an actuating element for attachment to the elevator car cage, wherein the actuating element in a first position P1 activates the safety apparatus and can be brought by an engineer into a second position P2 in which it does not exert any action on the safety apparatus.

Abstract: An elevator system includes a safety device by which a rotation and/or translation of a fixed bearing part of a rotary bearing of a deflection roller, which is associated with a counterweight, can be detected. An alarm signal is generated by the safety device when the position of the bearing part deviates from a predeterminable value.

Abstract: A large-torque chain-guide type constant ratio/continuously variable transmission is disclosed. The transmission comprises transmission rollers (A, B), an endless transmission chain or belt (C) and two chain guiders (D, E) respectively arranged beside the two transmission rollers. Each chain guider comprises n groups of grooved-pulleys, and each group comprises m grooved-pulleys. Each grooved-pulley rotates freely around a grooved-pulley axis, and an angle ? is formed between the axis of at least one grooved-pulley in each group of grooved-pulleys and a roller axis of the transmission roller matched with the same grooved-pulley. The angle ? enables the chain entering the chain guider and the chain leaving the chain guider to move a certain axial distance, i.e. a chain distance, on the transmission rollers, wherein the chain distance is required to be larger than the width of the chain or the belt.

Abstract: A mechanical actuator for translating rotational motion to linear motion. The actuator includes a motor, a screw assembly, a bearing assembly, and first and second lubrication systems. The screw assembly includes a housing, a threaded screw shaft disposed within the housing, a nut assembly, and an extension tube. The threaded screw shaft is rotatable by the motor. The nut assembly is arranged to move in either direction along a longitudinal axis of the threaded screw shaft when the threaded screw shaft is in rotational motion, thereby moving the extension tube between an extended position and a retracted position. The bearing assembly is arranged to provide support to at least a portion of a length of the threaded screw shaft. A pathway of the first lubrication system is remote and isolated from a pathway of the second lubrication system.

Abstract: Apparatus for braking relative vertical movement between two vertical members includes linkage connected either directly or indirectly to a cable pulley-mount that is spring loaded and moves cams that wedge in between two vertically moveable members when cable tension is not present at the pulley. A broken cable, for example, will create a situation where there is no cable tension between a plurality of cable pulleys, the lack of cable tension moves the mechanical cam style linkage to engage the braking members.

Abstract: Elevator tension members are disclosed. The disclosed tension member longitudinally extends along a longitudinal axis and includes a plurality of fibers formed into one or more primary strands or cords extending parallel to the longitudinal axis and a plurality of fibers formed into one or more secondary strands or cords extending parallel to the longitudinal axis and through less than the full length of the belt, and a jacket retaining the primary and secondary strands or cords. The secondary strands or cords have a tensile modulus greater than a tensile modulus of the jacket and less than a tensile modulus of the primary strands or cords. Methods of making the tension member are also disclosed.

Abstract: Spooling machine including two side frames spaced at a horizontal distance by a telescopic spacer beam, each frame having a pintle on supports for bearing a drum for cable pipe or hose, the telescopic spacer beam including at least one outer tube and at least one inner tube, which are slidably and telescopically one inside the other, and a locking device positioned between the outer tube and the inner tube for locking the outer and inner tube in adjustable position. The locking device includes a split part of the inner tube extending over a part of the length of the inner tube and dividing the inner tube into sections, and a force element for creating a swelling force on the split part of the inner tube to press the sections against the inner surface of the outer tube.

Abstract: There is provided herein a dispenser for a rolled product which has a center bore, comprising: a casing having walls and having a top with an opening; a first fastening means disposed on a first inner wall of said casing; a second fastening means disposed on a second inner wall of said casing, wherein said first inner wall is opposite said second inner wall, and said first fastening means is opposite said second fastening means; and an axle fastened to said first and second fastening means, wherein said axle can rotate when fastened.

Abstract: A self-securing roll holder for easily exchanging rolls of sheet material. The holder comprises a mounting bracket, an mounting stanchion, a support, and a cap. The cap is pivotally connected to the support with a resilient retaining assembly. The cap has dimensions that allow the cap to act as a retainer in one position and, when moved to a second position, allow rolls of sheet material to be mounted and dismounted from the support. The retaining assembly further comprises a piston, a piston guide, a spring, and a pivot pin all of which are located inside the support. The cap is pivotally connected to the retaining assembly thereby maintaining forcible contact with the support and retaining rolls of sheet material on the support in one position until moved to a second position to exchange rolls.

Abstract: Exemplary arrangements for drive chains are disclosed. In one exemplary arrangement, a tooth shaped link member for a drive chain comprises a web portion, a first side tooth, a second side tooth and a central guide tooth. The web portion extends between opposing side portions of the link member. The first side tooth and the second side tooth each include an apex that is oriented at an angle to extend toward the central guide tooth. In another exemplary arrangement, a drive chain comprises a plurality of inner links that are operatively connected to a plurality of outer links, where a pair of rollers are mounted between the inner links with a pin being positioned between the rollers.