Abstract: Provided is a pulley structure of a belt type electric power steering (EPS) gear, and more particularly, a pulley structure of a belt type EPS gear capable of providing good assemblability using an engineering plastic and a specific structure. The pulley structure of the belt type EPS gear includes an insert ring section coupled to a ball nut, a support section configured to support the insert ring section, a first flange section configured to prevent separation of a belt, a pulley having a driving section configured to receive a driving force of the belt, a support frame disposed at one side surface of the driving section and having a bent shape to have an internal space when coupled to the ball nut, and a second flange section disposed at one side surface of the support frame and configured to prevent separation of the belt.

Abstract: A tension device for a corded-loop drive system has a base with a sprocket on the base such that the cord loop travels over the sprocket. At least one resilient finger has a first end attached to the base and a free end. Each finger is sized and positioned to engage the cord loop when the tension device is not properly mounted to a wall or window frame and prevent movement of the cord loop around the sprocket. There is a hole in the finger through which a screw passes. When the base is placed on a mounting surface and the screw is driven into the mounting surface, the free end of the finger will have moved from the first position to a second position away from the cord so that the cord loop may move around the sprocket and the window covering can be fully raised and fully lowered.

Abstract: A pulley body 5 is provided at its both sides with power transmission members 6, 6. When a flat belt 3 becomes misaligned relative to the center of the pulley body 5 and comes into contact with one of the power transmission members 6, a running force of the flat belt 3 is utilized to displace the pulley body 5 diagonally relative to the flat belt 3, thus producing a force for returning the flat belt 3 to its original state.

Abstract: A drive wheel used with an exercise machine consists of a belt wheel (10), a drive element (20) and a cover (30). A non-circular recess (11) is defined in the belt wheel (10) to receive the drive element (20) inside the recess (11) and lock the drive element (20) in the drive element (20). The cover (30) selectively has multiple protrusions (31) to wedge into corresponding notches (13) defined in the belt wheel (10) and is detachably connected to the belt wheel (10) to enclose the drive element (20) inside the drive wheel by multiple fixing elements such as rivets (40).

Abstract: A cable reversing system for an automatic window lift having a cable reversing part affixed to a rail. The cable reversing part defines a housing enclosing a cable pulley. The cable pulley has two bearing stubs which snap into corresponding clearances in the cable reversing part so that the cable pulley is supported in a geometric interlocking manner inside the cable reversing part.

Abstract: A cantilever shaft assembly includes a steel pipe firmly secured at one end to a wall surface of a stationary support member, and a core shaft made from a synthetic resin and having a body portion removably fitted in the steel pipe and an end portion located outside the steel pipe. The end portion forms a free end of the cantilever shaft assembly and rotatably supports thereon a rotating member such as a driven sprocket. The core shaft and the steel pipe are locked and held together by a locking device such as a pin or a key. The cantilever shaft assembly is light in weight and can be easily repaired at a low cost when the end portion of tne synthetic resin core shaft is damaged or worn out.

Abstract: A chain saw comprises interconnected center links and side links. The side links include front and rear heels having front and bottom contact surfaces, respectively, which slidably engage an edge rail of a chain saw guide bar. The bottom contact surface of at least one of the heels includes a recess formed therein. The recess has an open front end and a closed rear end. The recess is of less width than a width of the respective bottom contact surface, whereby portions of the contact surface straddle the recess. The depth and width of the recess gradually decrease from the front end toward the rear end. During a cutting operation, lubricant enters the recess and creates a pressure which lifts the heel slightly off the rail, eliminating metal to metal contact.

Abstract: A guide assembly for a bicycle chain is fitted to the crank or front chain ring and remains in position as the chain ring rotates. The assembly has chain guide assemblies to stop the chain from coming off the chain ring. By not having the assembly attached to the frame, but instead to the chain ring or crank, the assembly can be used on a large number of different makes of bicycles.

Abstract: A drive mechanism including a toothed pulley and a device for retaining mesh between the teeth of the pulley and the teeth of a belt after assembly thereto. The retaining device includes a retaining member positioned adjacent a toothed section of the pulley defining a space therebetween enabling the belt to fit between the retaining member and the toothed section of the pulley when the teeth are in mesh, the space between an apex or crown of a pulley tooth and the surface of the retaining member opposite thereto being smaller than the maximum thickness of the toothed belt thereby ensuring a mesh between the teeth of the belt and pulley to provide a synchronized drive therebetween.

Abstract: A differential hoist and drive includes a differential escapement mechanism arranged mechanically between and in combination with a pair of direction turning members, such as pulleys. An endless loop of a flexible force transmitting element (cable, chain, strap, or the like) interconnects the direction turning members and the differential escapement. The load can be connected to either the differential escapement or the direction turning members with the other being anchored as a fixed member. The load is restrained from swinging or from other unintended movement. A turnbuckle or other suitable device provides for a desired pretensioning of the loop of flexible force transmitting element.

Abstract: A belt tensioning device for a belt driven bicycle that includes a tension plate having triangular positioned orifices. The plate is pivotally mounted to the frame with one of the orifices. Rollers are mounted in the other two orifices and the drive belt passes between the roller. When the belt tightens against one of the rollers, it pivots the tension plate, forcing the other roller into the belt and preventing any slack from occurring.

Abstract: A two axis drive lugged belt and lugged pulley drive system driving a driven member independently in two, mutually perpendicular areas with the drive in each direction operational alone or simultaneously for vector movement of the driven member. Both X-Y axis are directly belt-driven by respective motors and with the axis considered "Y" the primary hysteresis minimizing drive is directed primarily to the lugged belt of substantial length in the "Y" axis. This is with the "Y" drive lugged belt routed around six pulleys to move the "X" axis carriage mounting and guide structure, with the belt attached at two points, at opposite sides of one end of the "X" axis carriage mounting and guide structure. The drive motor for the "Y" drive lugged belt is directly coupled to one of the six pulleys that is gear meshed to another of the six pulleys assuring precise synchronous counter-rotation of the paired set of pulleys at one corner of the "Y" drive.

Abstract: In a free-wheel for bicycles comprising an inner body integral with the wheel hub and an outer body carrying the chain drive sprockets, rolling on the inner body through two sets of balls, the seat for one of the sets is formed between a shoulder of the inner body and an adjustment cone screwed on the inner body. The cone is engaged with the shoulder through opposite conical centering surfaces, formed on the adjusting head of the cone and directly on the shoulder.

Abstract: A device providing reciprocating drive for a vehicle having a sprocket or drive wheel rotatably mounted on a frame. The mechanism is operable to reciprocally rotate a pair of independent hubs which impart a torque on such a wheel in a known direction when rotated in one direction and impart no force when rotated in the other direction. Included in the mechanism is a pair of spaced-apart sheaves rotatably mountable on such a frame and lever arms for applying rotational force to the sheaves. In one preferred embodiment, each sheave is operably attachable to a different hub. A pair of opposing cables with an end fixed on the rim of each sheave extend around separate idler pulleys interposed the sheaves in such a manner that the cables apply opposing rotational forces on each rim when placed under tension. The cables may be connected in such a manner that only one of the sheaves tends to rotate a hub in a torque-imparting direction.

Abstract: A drive frame for a scraper-chain conveyor comprises a pair of generally parallel side plates. A pair of aligned bearing bushes rotatably support a drive shaft of a chain drum. The bearing bushes are mounted in apertures in the side plates. The bearing bushes are welded to their respective side plates, thereby strengthening the drive frame.

Abstract: A hauling and cutting assembly of the type having a conveyor trough and a scraper chain conveyor bridging the conveyor trough includes a roller member radially mounted for rotation on the end of a bearing pin which supports a sprocket wheel and a guide member operatively connected to the conveyor trough overlaps the roller member to provide radial support therefor.

Abstract: A multi-stage sprocket assembly comprises a cylindrical member and a sprocket group and has therebetween a retaining device for preventing the sprocket group from axial movement with respect to the cylindrical member, the retaining device comprising an engaging groove extending circumferentially of the cylindrical member and an engaging member elastically engageable with the engaging groove and disengageable therefrom against the elastic engagement force. The engaging member engages with the engaging groove to mount the sprocket group to the cylindrical member in relation of being axially immovable and disengages from the groove to remove the sprocket group from the cylindrical member.

Abstract: The invention provides a bicycle crank unit in which the chain wheel or chain wheels are eccentric with respect to the crank spindle and the crank spindle carries an externally toothed pinion to engage within an internal gear carried coaxially by the chain wheel. This provides a step down gearing between the pedal crank arms and chain wheel and enhances the mechanical advantage of the drive transmission.