Abstract: An elevator system includes a hoistway, an elevator car movable along the hoistway, and one or more belts operably connected to the elevator car to propel the elevator car along the hoistway. A belt of the one or more belts includes one or more tension elements extending along a belt length, and a jacket at least partially encapsulating the one or more tension elements. The jacket includes a jacket base formed from a first material and one or more insert layers embedded in the jacket base material. The one or more insert layers have a corrugated shape along the belt length, and are formed from a second material different from the first material.

Abstract: A header for a harvesting machine with a movable cutterbar includes a belt drive mechanism connecting a stationary pulley mounted on the frame of the header and a relatively movable pulley mounted on the movable part of the header. The belt drive mechanism includes two guide pulleys, a belt mounted along said pulleys, and a pivot assembly mounted on the auger shaft. The guide pulleys are mounted on opposite lever arms of the pivot and said belt drive mechanism further includes a tensioning mechanism.

Abstract: A Continuously Variable Transmission (CVT) for use in applications where a transmission is desired to change the speed of the motor relative to the speed of the final drive. The CVT has a set of chains or belts that are mounted around a set of pins set in radially cut slots of a set of spindles so that the pattern of pins are able to expand and contract radially around the CVT axis via these slots. Sprockets that freely spin in either direction unless a chain or belt has fully seated on at least one tooth are arranged on the pins so that only one sprocket engages one chain or belt allowing for smooth ratio changes while the load in engaged. The spindles share a set of springs that act to return the transmission to a higher ratio at moments the load is overcome.

Abstract: A mobile machine for screeding floor surfaces and the like comprises a planet disk, which is rotatably supported and driven by a drive motor, and which carries at least one screeding disk, operatively connected to the drive motor and defining one screeding plane. The operative connection comprises at least one belt or chain running over a belt sheave connected to the screeding disk, and a belt sheave connected to the drive motor. The belt sheave of the screeding disk has a central stub axle forming part of an automotive wheel hub, comprising wheel bolts attached to said planet disk.

Abstract: Multiple belt mule drive apparatus and systems for use with ground maintenance vehicles are provided. The apparatus may include two endless belts each engageable with a drive sheave of a prime mover and a driven sheave of a cutting deck. Each drive belt may further contact a guide pulley and an idler pulley on a tension side and a slack side of the belt, respectively. In one embodiment, the drive sheave has an axis generally parallel to a longitudinal axis of the vehicle. Preferably, the guide pulley and the idler pulley associated with the first endless belt are, when the vehicle is in an operating configuration, located on a first side of a vertical plane passing through the drive sheave axis, while the guide pulley and idler pulley associated with the second endless belt are located on a second side.

Abstract: A power transmitting mechanism includes a first silent chain trained around teeth of a first driving sprocket and a teeth of first driven sprocket, and a second silent chain trained around teeth of a second driving sprocket and teeth of a second driven sprocket. The first and second driving sprockets are mounted in parallel relationship on a single drive shaft, and the teeth of the first driving sprocket are offset from the teeth of the second driving sprocket by one-half pitch. The pitch of the driving sprockets is a random pitch which varies in a random pattern along the circumference of the sprockets. The silent chains have a single pitch. By thus phasing the two driving sprocket, periodic meshing impact sounds emitted from the respective silent chains are canceled out or offset each other. The periodicity of the meshing impact sound is agitated by the random tooth pitch of the driving sprockets to such an extent that resonance sound is sufficiently reduced.

Abstract: A movable backup bar assembly includes an endless drive chain, a sprocket or the like for coupling the drive chain to the power source, and a backup bar for guiding the drive chain. The assembly has two positions: a first position for holding the drive chain in engagement with the chain to be driven and a second position for holding the drive chain away from the driven chain. An actuator is provided for positively shifting the assembly between these two positions.

Abstract: A rotary device comprising two elements (12, 20/22) supported for rotation about an axis (11) and movable relative to one another along said axis, and diaphragm spring means (33) urging said elements axially relative to one another, said diaphragm spring means having radially inner and outer portions connected respectively to said elements and arranged such that said elements are constrained to movement in opposite directions by the same or substantially the same distance as one another about an axially fixed position.

Abstract: A chain for use with a continuously variable transmission is formed in two portions that are phased, or offset, by one-half pitch length. The chain portions include an asymmetrical guide link on the outside of alternate rows. The inner links have a substantially horizontal lower body and a horizontal upper portion of the passageway to position the strut in close proximity to the chain pitch line.

Abstract: A power transmission roller chain includes pin links having pins spaced by one pitch and connected to each other by plates, and bushing links or “blocks” having bushings spaced apart from each other and rigidly connected to each other by plates. Two successive pin links are connected to each other by a bushing link having the bushings rotatably mounted on the pins. At least one pin link includes a central plate provided with pins alternately protruding from opposite faces of the plate offset from each other by a fraction of a pitch.

Abstract: A traveling chain mechanism has spaced sprockets with an endless chain trained around them. A traveling chain is transferable between the sprockets radially inward of the endless chain. The speed ratio between the sprockets is dependent upon which sprocket has the traveling chain connected thereto. By transferring the traveling chain between the sprockets, the speed ratio is changed. A derailer mechanism initiates the transfer of the traveling chain from one sprocket to the other. The derailer mechanism incorporates a pair of axially spaced derailer arms that are axially movable into the path of a long pin on a lead link of the traveling chain. The long pin engages the arms to cause pivoting thereof thereby aligning a ramp thereon with the shorter pins on each link. The derailer arms guide the traveling chain to a guide track for transportation by the endless chain to the other sprocket.

Abstract: A drive assembly for operatively rotating a web spreading roll of a paper mill or the like utilizes a toothed belt for transferring rotational motion from a motor-operated driving toothed pulley to a freewheeling or otherwise rotatably mounted driven toothed pulley. The driven pulley is, in turn, coupled to at least one of the plural rotary driven roll segments of and that are carried on the curved shaft of the web spreading roll. To minimize wear on the toothed belt, the driving and driven pulleys are fixedly mounted in positions of permanent alignment with one another, as by mounting both the drive motor and the driven pulley on the shaft bearings housing located at one end of the spreading roll shaft. A flexible coupling, as in the form of a rubber or otherwise suitably resilient bellows or the like, connects the driven pulley to the at least one roll segment for transferring rotation of the driven pulley to the roll segment so as to operatively rotate the web spreading roll.

Abstract: An electrophotographic imaging apparatus including at least a first rotatable belt support roller and a second rotatable belt support roller, each of the first and second rotatable belt support rollers having an imaginary axis parallel to and spaced from the other, a flexible electrophotographic imaging belt in contact with and supported by the first and second rotatable belt rollers, a belt driving device and at least one flexible non-stretchable drive belt extending from the belt driving device directly to each of the belt support rollers whereby activation of the belt driving device applies a pushing force directly to the drive belt in the region between the drive belt driving device and the first rotatable belt roller and simultaneously applies pulling force directly to the drive belt in the region between the driving device and the second rotatable belt support roller.

Abstract: A chain drive mechanism has spaced sprockets about which is trained an endless chain. A traveling chain is disposed radially inward of the endless chain and encircles one or the other of the sprockets during power transmission. The traveling chain is transportable between the sprockets so that the speed ratio therebetween can be altered. When encircling a sprocket, the traveling chain is locked or latched to the sprocket. The lock mechanism has a retainer pin and a locking pin. The locking pin is connected for conjoint movement with the retainer pin which is positioned in latched and unlatched positions. In the unlatched position of the retainer pin, the lock pin engages an opening in the link of the traveling chain thereby securing the traveling chain to the sprocket.

Abstract: A gear reduction box designed to be integrated into an existing oil field pumping unit to reduce the gear ratio and thereby reduce the size of the motor needed to operate the pumping unit. More specifically, the invention is a gear reduction box including a base that can be mounted on an oil field pumping unit, a drive motor having a first sheave attached thereto, a pair of bearings mounted on the base and rotatably holding a drive shaft, a larger second sheave removably attached to one end of the drive shaft and connected to the first sheave by a first drive belt, and a third sheave removably attached to the opposite end of the drive shaft and connected to the oil field pumping unit by a second drive belt. The second and third sheaves can be removed and replaced with varying sizes of sheaves in order to adjust the number of strokes per minute of the oil field pumping unit.

Abstract: A drive mechanism for a household washer-dryer includes an at least approximately horizontally rotatably supported tub having a tub jacket and a tub axis. A gear pinion has a drive belt being wrapped around the tub jacket for driving the tub in opposite directions. A large pulley is connected to the gear pinion, is fixed against rotation relative to the gear pinion and is supported on a common axis with the gear pinion. An electric drive motor has a motor pinion with an axis. A gear belt is driven by the motor pinion for driving the large pulley. The common axis is movably guided axially parallel and is spring-loaded in a direction toward an increase in spacings between the common axis and the axis of the motor pinion as well as between the common axis and the tub axis.

Abstract: A chain and sprocket system includes a plurality of chains and sprockets. The system includes a crankshaft, an idler shaft and two overhead camshafts. The two sprockets on the idler shaft that connect by chain to drive the camshafts are phased or offset with respect to each other to alter the impact and chordal action generated noise. These idler camshaft sprockets and the idler sprocket of the crankshaft are all manufactured separately and then placed together on a spline or hub. In this way, the idler sprocket assembly consists of four parts, which eases manufacture and assembly.

Abstract: An Improvement in a multiple band continuously variable transmission that provides equal speed ratios for each band throughout a range of overall transmission speed ratios through the use of radially contoured pulley sheaves,

Abstract: A chain assembly has pins extending through the guide links with minimal projection beyond the outside edge of the guide links. The minimal pin projection provides a chain assembly of narrow construction. Modular chain systems are also provided that permit manufacturing savings in the construction of chain systems of standard widths.

Abstract: The power transmission chain of the present invention is formed of two parallel chains that are phased or offset by approximately one-half pitch. The chains are connected by struts that extend across the entire width of both chains. The power transmission chain belt of this invention provides for a restricting device in the interchain gap of the load block. Offset occurring during the speed change of a continuously variable transmission can be absorbed by the above mentioned gap. In one embodiment, the restricting device is in the form of a stop ring provided near the middle of the gap between the two side-by-side chains.

Abstract: A folder apparatus is disclosed which has a removable mounting plate supporting both of the corresponding exit rollers of a single lead-in tape assembly. The modular cartridge formed by the mounting plate and exit rollers allows for easy replacement of these parts in the folder.

Abstract: A chain assembly has pins extending through the guide links with minimal projection beyond the outside edge of the guide links. The minimal pin projection provides a chain assembly of narrow construction. Modular chain systems are also provided that permit manufacturing savings in the construction of chain systems of standard widths.

Abstract: A roller chain assembly has pins extending through the outer links with minimal projection beyond the outside edge of the outer links. The minimal pin projection provides a chain assembly of narrow construction.

Abstract: A chain and sprocket system includes a plurality of chains and phased or offset sprockets. The transmission system includes a random or hybrid chain with the offset sprockets. The timing system can include single or dual overhead camshafts, with phasing of the crankshaft sprockets and camshaft sprockets.

Abstract: A two degree-of-freedom robot manipulator is constructed from two rotary drives of prior invention. Each rotary drive consists of a relatively small diameter cylindrical driving member and a relatively larvae diameter cylindrical driven member coupled by a cable system. The driving member of rotary drive 2 is positioned with its axis of rotation coincident with the axis of rotation of the driven member of rotary drive 1. The driven member of drive 2 is rotatably mounted to the driven member of drive 1 to realize the required relative positioning of the driving and driven members of drive 2. The driving members of both rotary drives are mounted in a fixed reference frame. Coordinated control of the driving members allows two axis dynamic control of a tool apparatus mounted to the second driven member.

Abstract: An electrostatic printer employing a photoconductive belt wrapped around multiple rollers. A motor drives a first roller. An elastic belt is wrapped around the first roller and a second roller, allowing the first roller to drive the second roller.

Abstract: A timing pulley having a grooved periphery having a stepped profile defining two concentric annular belt engaging surfaces. Each of the surfaces receive a separate timing belt thereon. The belt engaging surfaces carry teeth for meshing with corresponding teeth on the timing belts. When the belts are deployed on the pulley, the outermost belt is in covering relation relative to the innermost belt. The multiple belt timing pulley is for accommodating multiple timing pulleys in a common plane.

Abstract: A bicycle power train assembly includes a crank axle, a primary driving sprocket cluster mounted on one end of the crank axle, a rear wheel axle, a primary driven sprocket cluster mounted on one end of the rear wheel axle, a primary drive chain trained between the primary driving and driven sprocket clusters, a secondary driving sprocket mounted on the other end of the crank axle and rotating with the crank axle, a secondary driven sprocket mounted on the other end of the rear wheel axle, a secondary drive chain trained between the secondary driving and driven sprockets, an idle sprocket rotatably mounted on the rear wheel axle, and a ratchet clutch disposed between the rear wheel axle and the secondary driven sprocket to disengage the secondary driven sprocket from the rear wheel axle when the primary drive chain is trained between the primary driving and driven sprocket clusters and to engage the secondary driven sprocket and the rear wheel axle so as to drive rotatably the rear wheel axle when the primary

Abstract: A powered wheelchair 50 comprises a frame 52 and two independently rotatable drive wheels 54 and 56 mounted to the frame 12. Two motors 62 and 64 are coupled via coupler 70 to the drive wheel 54 such that the motors 62 and 64 drive the drive wheel 54 in different speed ranges. Two motors 66 and 68 are coupled via coupler 80 to drive the drive wheel 56 such that the motors 66 and 68 drive the drive wheel 56 in different speed ranges. Various control systems, including a microprocessor based control system 190, may be employed to control the motors 62, 64, 66, and 68.

Abstract: A telescoping mast assembly includes a plurality of interconnected mast sections nested within each other for movement between a fully retracted height and a fully extended height. A novel, rigid drive assembly, disposed within the interconnected mast sections, telescopes the mast sections to any position between the fully retracted and the fully extended heights. The rigid drive assembly is constructed of two interconnected, flexible chain elements which accurately position the interconnected mast sections.

Abstract: A multiple drive chain system comprises two-chain pairs and a plurality of rotatable sprockets working together and with the chain pairs to lift and transport heavy loads. The two-chain pairs are arranged in superposed interlocking relationship and each chain is made of a succession of links having link plates wherein the link plates of the fourth chain lie between and are inner to the link plates of the third chain, and the link plates of the first plate lie between and are inner to the link plates of the second chain. The first and third chains are piggybacked for part of their travel and, similarly, the second and fourth chains are piggybacked through part of their travel.

Abstract: A V-type internal combustion engine having two overhead camshafts per cylinder bank is provided with an absolutely synchronous rotational-angle adjustment between two inlet camshafts and the engine crankshaft to minimize torque fluctuations in the cam drive. One of the two camshafts actuating the inlet valves of the internal combustion engines has a device for the rotational-angle adjustment of this camshaft relative to the crankshaft and the two camshafts actuating the inlet valves are coupled to one another via a timing chain or a toothed belt which is in operative connection between an output side of the rotational-angle adjusting device and the other camshaft actuating the inlet valves.

Abstract: The invention relates to an arrangement for transmitting torque between conical pulleys in a transmission mechanism. The invention is characterized in that the arrangement includes a first endless, flexible element (v-belt, chain or flat belt) for taking-up clamping forces and a corresponding second element for power transmission between the pulleys. The second element extends around the first element and is provided with devices which are in shape-bound engagement with co-acting devices on the first flexible element, the arc of contact (.alpha.) of which around the pulleys is greater than the arc of contact (.beta.) of the elements when in engagement together.

Abstract: This is a belt drive arrangement in which two belts are used, the inside surface of one running in contact with the outside surface of the other for part of their lengths and both running within the width of one belt, with input and output shafts, and one or more idler pulleys providing forward or reverse rotation of the output shaft with the input shaft having a constant direction of rotation.

Abstract: A multi-spindle automatic screw machine having its principal working parts mounted on a weldment. A circular array of tool holders is mounted directly on top of the weldment, and a corresponding array of work spindles is mounted coaxially and in end-to-end confrontation with the tool holders upon a shaft cantilevered on the weldment.

Abstract: A conveyor chain motion measuring device is disclosed having a double take-off drive coupled with closed-loop drives and one-way clutches so as to produce accurate measurement of the actual chain speed and travel for the entire length thereof regardless of chain link pitch variations and also maintain such precise measurement when the chain is temporarily reversed and then resumes travel in a forward direction.

Abstract: A conveyor chain motion measuring device is disclosed using a double take-off drive from the conveyor chain to produce accurate measurement of the actual chain speed and travel for the entire length thereof regardless of chain link pitch variations.

Abstract: Conveyor belt drive apparatus in which an endless looped traction belt engages the main conveyor belt and is driven around the loop to impart driving forces to the main belt. The face of the traction belt which engages the main conveyor belt has a series of open facial pockets and holes extend through the traction belt between the pockets and the reverse or inner face of the belt. A stationary suction chamber structure confronts the inner face of the belt to form therewith a suction chamber such that suction is applied via the holes to the pockets of the traction belt in the region where the traction belt engages the main conveyor belt to provide suction clamping action between the belts.