Abstract: A trolley for transporting objects hanging from an I-beam normally securely grips or latches to the I-beam via a pair of brake pads that are urged upward against the bottom of the beam by a torsion spring. The torsion spring is released by pulling a lever downward. Applying lateral force to the trolley, preferably by applying a lateral force to the same lever, pulls the trolley along the I-beam as the wheels engaging the upper portion of the I-beam can rotate freely once the brake pads are released. Releasing the lever after the trolling is pulled to the desired location causes the brakes to again firmly grip the I-beam.

Abstract: A overhead transport service vehicle system includes a carriage frame structured and arranged to carry a user. A hoisting mechanism utilizes at least one lifting device for lifting and lowering the carriage frame and at least one moving device for causing movement of the hoisting mechanism along one of a track or rail. A control controls at least one of the at least one lifting device and the at least one moving device.

Abstract: Generally and not exclusively, there is disclosed a system and a method for towing (pushing or pulling) a roadway vehicle on a road by a towing apparatus. The towing apparatus is coupled to a roadway guideway displaced generally above the surface of the roadway. In an embodiment, the system includes an apparatus to couple a vehicle to the roadway guideway, a force generation unit to move the coupled vehicle along the roadway guideway, and a brake unit to decelerate the apparatus and a coupled vehicle. In an embodiment, the system includes a coupling unit to separately couple or not couple the vehicle to one of multiple separate components of the roadway guideway, so that the towing apparatus, and therefore a towed vehicle, can switch roadway guideways by coupling to one or another component of the roadway guideway.

Abstract: The invention relates to a winch (6) for raising and lowering persons, of the type that comprises a housing with an attachment member (16), an electric motor (39) driving a reel (27), a lifting strap (7) connected to the reel for winding and unwinding the lifting strap whereby the lifting strap is guided through one of two openings (17,19) formed in the housing.

Abstract: An apparatus for assisting an elderly or physically limited individual in walking or carrying items up or down a stairway includes a guide rail assembly fixedly positioned along the wall of a stairway. A handle is connected to a support bar assembly, and the support bar assembly attaches to the guide rail assembly. The guide rail assembly typically has a tubular inner rail fixedly housed within a tubular outer rail, the outer rail typically includes a guide track along its length, and the inner rail typically includes a pin slot which aligns with the guide track. To operate the apparatus, the user grasps the handle while supporting the upper body on the support bar and moves the support bar assembly along the guide track while walking along the stairway. The handle and support bar assembly can be placed into a braking position as needed while moving along the stairway.

Abstract: A rail guide having first and second guiding rails disposed in a mirror-inverted relationship with regard to one another. At least one pair of spaced leading and following carriages are displaceably mounted to the guiding rails so as to engage and transport a sliding component along a transport path towards a stacking area. While the leading and following carriages are slidably supported by both guiding rails along the main track of the transport path, the leading carnage slides along the first rail, and the trailing carriage slides along the second rail along the transport path downstream from the main track in the stacking area.

Abstract: An over/under monorail system for longwall mining operations can have a single overhead rail mounted trolley system with a pair of over/under mounted trolleys. Upper trolleys can be carried by the overhead rail, and can typically carry hydraulic pipes. A lower rail can be carried by the upper trolleys, and lower trolleys can be carried by the lower rail. The lower trolleys can typically carry electric cables. Some trolleys can be adapted to carry both flexible hydraulic hoses and electric cables, and such trolleys can be carried by either the upper or lower rails, depending upon the design of the overall system.

Abstract: A trolley for a conveying system includes a first trolley arm with a trolley wheel rotatably mounted thereon, a second trolley arm with a trolley wheel rotatably mounted thereon, and a load bar. The trolley wheels roll along a track of the conveying system to move the trolleys along the conveyor track. The first trolley arm connects to a first attachment element, which includes a base portion and an attaching member that are integrally formed together. The load bar connects to the second trolley arm and to the attaching member of the first attachment element. The load bar has a slot proximate to one or both ends for receiving the attaching member. The attaching member is retainable in the slot, such as via a retaining pin. The first and second trolley arms are connected together via the load bar.

Abstract: A conveyance truck movable along travel rails includes a suspended supporting device for supporting a vehicle body, a raising and lowering device for raising and lowering the suspended supporting device, and a posture adjusting device for adjusting the posture of the vehicle body. The raising and lowering device includes a first supporting axle disposed in the front section in the travel direction, a second supporting axle provided in the rear section movable towards and away from the first supporting axle, a crank arm supported rotatably on the second supporting axle and having the suspended supporting device supported rotatably at its free end portion, a swinging arm fixed to the first supporting axle and having a free end portion coupled to an intermediate position of the crank arm, and an arm drive mechanism for causing the crank arm to rotate about the second supporting axle.

Abstract: A system, method, and computer readable medium for a customer premises equipment based advertisement insertion mechanism for Internet Protocol based networks, comprises, storing advertisements in a customer premises equipment, detecting an advertisement insertion signal in a data stream, and multiplexing the stored advertisements into the data stream upon the detecting of the advertisement insertion signal.

Abstract: A multi-program trolley and track switch system is provided for a movable wall system having multiple panels supported and movable along multiple paths defined by multiple track sections. Switch assemblies automatically direct each wall panel to a predetermined wall forming location based on the arrangement of guide plates in the each switch assembly and the configuration of a diverter element associated with each trolley. Each switch assembly includes an array of vertically oriented guide plates offset at different lateral distances from the track path. Each trolley includes a side diverter element that is positioned a predetermined lateral distance from the trolley centerline to engage a pre-selected switch guide plate. In one embodiment, lead trolleys have only a side diverter element while trailing trolleys have both a side diverter element and a center diverter element.

Abstract: Buffers 6, 8 are provided on both sides of a travel rail 10. An overhead traveling vehicle 4 has a SCARA arm movable back and forth to both of the left and right so that a rotation unit 22 and an elevation drive unit 4 can move to a position above either of the buffers 6, 8.

Abstract: A winch assembly comprising a) a person lowering and raising winch component attached to a carriage component, the carriage component being configured for coupling to a carriage track of an overhead support for displacement thereof along the carriage track and b) a carriage displacement component for inducing displacement of the carriage component along the carriage track, the carriage displacement component comprising an electric motor element and a clutch coupling element the electric motor element being configured for providing driving effort for the displacement of the carriage component along the carriage track the clutch coupling element being configured for coupling and de-coupling the driving effort of the electric motor element such that when the driving effort of the electric motor element is coupled and the electric motor element is energised the carriage component may be urged along the carriage track by the electric motor element and when the driving effort of the electric motor element is de

Abstract: A multi-program trolley and track switch system is provided for a movable wall system having multiple panels supported and movable along multiple paths defined by multiple track sections. Switch assemblies automatically direct each wall panel to a predetermined wall forming location based on the arrangement of guide plates in the each switch assembly and the configuration of a diverter element associated with each trolley. Each switch assembly includes an array of vertically oriented guide plates offset at different lateral distances from the track path. Each trolley includes a side diverter element that is positioned a predetermined lateral distance from the trolley centerline to engage a pre-selected switch guide plate. In one embodiment, lead trolleys have only a side diverter element while trailing trolleys have both a side diverter element and a center diverter element.

Abstract: The present invention relates to a friction drive conveyor including carriers 1, which can be propelled along a track by frictional wheels 30 fitted along the track. Each frictional wheel 30 can be driven by a brakeless motor 29. A sensor 32 senses whether each frictional wheel 30 is in contact with any one frictional surface 15 of the carriers 1. The track includes a section along which the frictional wheels 30 are supported at regular intervals equal to or slightly shorter than the total length L of the frictional surfaces 15 on each side of each carrier 1. On the basis of a signal output from each sensor 32, a controller 24 so controls the associated brakeless motor 29 as to start rotating the associated frictional wheel 30 in contact with any one frictional surface 15 when the forward next wheel 30 gets free of the frictional surfaces 15, and as to stop driving the frictional wheel 30 having got free of the frictional surfaces 15.

Abstract: An overhead transportation system includes a support structure positioning a running surface above ground level for operating a truck along the running surface. A car body is suspended from a beam or chassis carried by the truck in such a manner to place a center of rotation of the car body above the chassis and truck. Improved performance on curves is provided through superelevation of the tracks upon which fixed steel wheel assemblies of the truck ride.

Abstract: The present invention is directed to a material handling system (100) and method (200) for isolating a carrier mechanism (110) from the system. The system (100) comprises a track (103) having a channel (105), a turntable (115), and a carrier mechanism (110) coupled to the track structure via the channel. The system (100) further comprises a maintenance station (125), comprising a stub track (130), wherein the stub track is operably coupled to the track structure (103) via the turntable (115). The maintenance station (125) further comprises a power supply (135) and one or more connectors (140) operable to electrically couple the carrier (110) to the power supply (135). One or more stop blocks (145) are provided which are removably coupled to the stub track (130), wherein the stop blocks each comprise a body (155) having a rod (160) extending therefrom.

Abstract: An apparatus monitors the locking of the safety bar of the chairs of an aerial cableway system. A first sensor determines the occupancy of the chairs and a second sensor determines the locking of the safety bar. The sensor output signals from these two sensors are led to a control device, which is enabled to switch the chairlift system off.

Abstract: The present invention is directed to a material handling system (100) and method (200) for isolating a carrier mechanism (110) from the system. The system (100) comprises a track (103) having a channel (105), a turntable (115), and a carrier mechanism (110) coupled to the track structure via the channel. The system (100) further comprises a maintenance station (125), comprising a stub track (130), wherein the stub track is operably coupled to the track structure (103) via the turntable (115). The maintenance station (125) further comprises a power supply (135) and one or more connectors (140) operable to electrically couple the carrier (110) to the power supply (135). One or more stop blocks (145) are provided which are removably coupled to the stub track (130), wherein the stop blocks each comprise a body (155) having a rod (160) extending therefrom.

Abstract: An aseismatic device applied to an overhead hoist transport (OHT) system in a fab has a spring pin and a positioning ball installed in a cavity of a first platform. The spring pin has at least a spring for fixing the positioning ball and is mounted on a second platform positioned on the surface of the first platform. When the earthquake occurs, the second platform will move horizontally corresponding to the first platform for preventing the OHT system and the fab from being damaged.

Abstract: A hanger connects an enclosed track rail to a beam such that the enclosed track rail is positioned laterally with respect to the beam. The hanger and the arrangement of the track rail with respect to the beam allows rapid conversion of a material handling system from “open roller” tracks to enclosed tracks without removal of existing tracks, without adding new structural support for the enclosed tracks, and without substantial reduction in overhead clearance. A method of retrofitting an enclosed track rail to a material handling system having an open-roller track is also provide.

Abstract: The present invention relates to an improved transportation system which includes a plurality of upright supports (1) which elevate at least one track (2). A plurality of cabs (3) are adapted to move along the track or tracks (2) provided where the cabs (3) suspended from a track (2) so that the center of mass of the cabs (3) is located below the track (2). A single track (2) provides a pair of rail elements on opposite sides of the track (2) where the first rail element is adapted to support cabs (3) moving in substantially the opposite direction to cabs (3) supported by the second rail element of the same track (2).

Abstract: An overhead conveyor in which a pair of front hanger arms (2a, 2a) for loading the bottom of a front part of a vehicle body and a pair of rear hanger arms (2b, 2b) for loading the bottom of a rear part of a vehicle body are arranged at a hanger body (2d) which moves along with a running rail established in the ceiling. The pair of front hanger arms (2a, 2a) and the pair of rear hanger arms 2b, 2b are movably attached to the hanger body 2d, the hanger body 2d having an engaging groove (13) for engaging the movably attached pair of hanger arms at each engaging position of the vehicle body through each an engaging lever (14), having an actuator (16) to control the engaging-and-disengaging movement of the engaging lever.

Abstract: A winch assembly comprising

Abstract: An individual transportation system (10) includes a track system (12), including a primary track section (14), a switching track section (16) and loading/unloading section (18). The transportation system (10) additionally includes a plurality of carriages (20) supported by the track system (12), and a plurality of underslung passenger vehicles (22) each matably engageable with one of the carriages, and adapted to hold at least one passenger therein. The transportation system (10) further includes a storage facility (24) for storing the vehicles (22) when they are disengaged from the carriage, whereby a carriage and vehicle combination traveling on the primary track can be switched between primary track section (14) via an associated switching track section (16), and can be switched to the loading/unloading track (18), wherein the vehicle may be disengaged from carriage (20) and stored in the storage facility (24).

Abstract: An overhead transportation system includes a support structure positioning a running surface above ground level for operating a truck along the running surface. A car body is suspended from a beam or chassis carried by the truck in such a manner to place a center of rotation of the car body above the chassis and truck. Improved performance on curves is provided through superelevation of the tracks upon which fixed steel wheel assemblies of the truck ride.

Abstract: A rail system having a light assembly is provided including a rail for holding a panel and at least one column, wherein the rail includes a recess for attachment to an edge of the panel, wherein the rail and at least one column comprise a housing for the light assembly.

Abstract: An improved support structure capable of supporting a guideway in the form of a tube or tubes which may in turn carry a train for travel thereupon, which elevated guideway is capable of passing over existing right-of-ways, rolling or mountainous terrain, and rivers of moderate size. The improved support structure provides a uniform vertical thermal expansion and uniform loading deflection (due to the weight of a passing train) thus assuring that the elevated tubes are smooth and straight.

Abstract: A rail mounted patient lift comprises a ceiling mountable rail 10, a carriage 16 mounted for displacement along the rail, a flexible elongate support element and power operated lifting means for extending and retracting the support element relative to the carriage. The rail 10 comprises a plurality of rail sections 10a, 10b which in use are suspended from a ceiling with a gap 13 therebetween at a position where the rail 10 is to cross the path of a curtain 14. Each rail section has at least one pivotable flap 19 engageable by the carriage 16 as it moves along the rail. The flap 19 of one of a pair of adjoining rail sections is pivotable by the carriage as it moves in one direction to bridge the gap between the two sections and the flap of the other of the pair of adjoining rail sections is pivotable by the carriage as it moves in an opposite direction to bridge the gap between the two rail sections.

Abstract: A vehicle body transfer apparatus (1) that hangs and transfers a vehicle body (F) of every vehicle type is provided. The apparatus (1) includes a hanger (20) that supports the vehicle body (F) in a hanging condition, and moves along a transfer path (25), and vehicle body support parts (32, 32) that adjust supporting positions on the vehicle body (F) in the hanger (20) based upon a center of gravity of the vehicle body (F) of each vehicle type. The hanger (20) includes center-of-gravity management plates (22, 22, 23, 23) having a plurality of vehicle body support parts that support the vehicle body (F) according to the vehicle type of the vehicle body.

Abstract: A suspended transportation system comprising an extended continuous hollow box way having a slot throughout its operative under wall, said box way being elevated by columns from the ground level and generally following the lay of the ground; a pair of rails fixed on either side of the slot on the operative inner surface of the under wall within the extended box way and extending continuously throughout the box way; a plurality of bogie assemblies moving on the said rails within the box way secured to a floating beam located in the box way operative overhead of the bogie assemblies suspension means extending from the floating beams operatively downwards and through the slot in the box way; coaches suspended from suspension means; and motor means to displace the bogie assemblies on the rails. A derailment control safety device is also disclosed.

Abstract: A method and apparatus for clearing an immobilized and or derailed suspended coach is described. The suspended coach forms part of a suspended coach transportation system in which suspended coaches suspended from a suspender beam fitted to a conventional rail bogie with wheel sets moves on rail fitted in a concrete box guide way. The method and apparatus involves extending the suspender beam to make it longer than the coach body and providing the ends of the suspender beams with n extensor and lifting mechanism for permitting an assisting mobile coach to use its suspender beam to lift an immobilized coach at its suspender beam and carry or push the immobilized coach for clearance. A method of clearing an immobile or derailed suspended coach in a suspended coach transportation system is also disclosed.

Abstract: A method and apparatus for clearing an immobilized and or derailed suspended coach is described. The suspended coach forms part of a suspended coach transportation system in which suspended coaches suspended from a suspender beam fitted to a conventional rail bogie with wheel sets moves on rail fitted in a concrete box guide way. The method and apparatus involves extending the suspender beam to make it longer than the coach body and providing the ends of the suspender beams with n extensor and lifting mechanism for permitting an assisting mobile coach to use its suspender beam to lift an immobilized coach at its suspender beam and carry or push the immobilized coach for clearance. A method of clearing an immobile or derailed suspended coach in a suspended coach transportation system is also disclosed.

Abstract: An overhead conveying apparatus, in particular for items hanging on hooks, having a conveying chain which is guided in a chain guide, the chain including chain studs which project laterally beyond chain flanges disposed on one side of the chain. Plate-like carrying elements are provided with holes for receiving the chain studs therethrough when the plate-like carrying elements have been pushed onto the chain studs. The carrying elements have a plate-like construction and are arranged one after the other on the chain. The carrying elements are provided with at least one opening or one cutout therethrough for accommodating a hook for the items.

Abstract: A deviating device for deviating a transporting means in a deviating plane was a deviating unit, two track portions of a movement path of a transporting means adjoining the deviating device and clamping the deviating plane, and mountable on the deviating unit, the track portions being mountable on a separate component of the deviating device, the components being turnable relative to one another about a turning axis which is substantially orthogonal to the deviating plane and being fixable in a predetermined angular position.

Abstract: An overhead conveyor track system for a wheeled carrier having at least one wheel adapted for traveling along a track and a depending load bracket. The system includes first and second elongated conveyor tracks having respective free ends. These tracks are adapted and arranged such that the same are in substantial longitudinal alignment with the free ends thereof in spaced relationship presenting a gap therebetween. The system further includes an elongated track segment that is adapted and arranged so as to be placed in the gap in a gap closed position in substantial longitudinal alignment with the tracks. The track segment normally is in the gap in its gap closed position but is removable from the gap so as to provide the system with a gap open condition. An automatic safety switch mechanism is provided.

Abstract: A rail mounted patient lift comprises a ceiling mountable rail 10, a carriage 16 mounted for displacement along the rail, a flexible elongate support element and power operated lifting means for extending and retracting the support element relative to the carriage. The rail 10 comprises a plurality of rail sections 10a, 10b which in use are suspended from a ceiling with a gap 13 therebetween at a position where the rail 10 is to cross the path of a curtain 14. Each rail section has at least one pivotable flap 19 engageable by the carriage 16 as it moves along the rail. The flap 19 of one of a pair of adjoining rail sections is pivotable by the carriage as it moves in one direction to bridge the gap between the two sections and the flap of the other of the pair of adjoining rail sections is pivotable by the carriage as it moves in an opposite direction to bridge the gap between the two rail sections.

Abstract: A power driven conveyor having a drive means and a carrier supported for movement along a path of travel parallel to the path of movement provided by the drive means. The carrier has a contact surface adjacent to the drive means that is movable between a first position wherein the contact surface is disengaged from the drive means and a second position wherein the contact surface is frictionally driven by the drive means so as to cause the carrier to move from a first station to a second station along the path of travel provided by the drive means. An actuator is operatively associated with the carrier for causing the contact surface to move between the first position and the second position.

Abstract: The installation enables the downhill transportation of passengers from a higher station to a lower station along a rail. Cars that are guided along the rail are equipped with the first of two interacting elements of an electromagnetic braking device, in particular with one or more permanent magnets, and the guide rail being equipped with the second elements, in particular braking strips made from an electrically conductive nonmagnetizable material, such as copper or aluminum, which interact with said first elements of the braking device. Each car is equipped with one or more first elements with an operating brake that is adjustable as a function of its load, and with one or more first elements of a safety brake that is activatable during downhill travel.

Abstract: A suspended transportation system comprising an extended continuous hollow box way having a slot throughout its operative under wall, said box way being elevated by columns from the ground level and generally following the lay of the ground; a pair of rails fixed on either side of the slot on the operative inner surface of the under wall within the extended box way and extending continuously throughout the box way; a plurality of bogie assemblies moving on the said rails within the box way secured to a floating beam located in the box way operative overhead of the bogie assemblies suspension means extending from the floating beams operatively downwards and through the slot in the box way; coaches suspended from suspension means; and motor means to displace the bogie assemblies on the rails. A derailment control safety device is also disclosed.

Abstract: An amusement device comprising a guide structure forming an endless track, along which a vehicle capable of accommodating at least one person can travel, whereby a person present in the vehicle extends substantially parallel to the track during operation. The person present in the vehicle lies with his back towards the track and with his face directed away from the track. The person's view is not impeded by other vehicles and he can only see the track itself when the turns his head.

Abstract: An overhead conveying apparatus, in particular for items hanging on hooks, having a conveying chain (4) which is guided in a chain guide (3), the chain (4) having chain studs (5) which project laterally beyond the chain flanges (13) on one side of the chain (4), there being provided plate-like carrying elements (19) which are arranged in a state in which they have been pushed onto the bolts (5) by way of holes (20), the carrying elements (19) being of plate-like design and being arranged one after the other on the chain, the carrying elements (19) having at least one opening (30) or one cutout (30) for accommodating a hook for the items.

Abstract: A movable body (9) movable on a given path (4) is provided with a support section (30) for an object to be carried. Supports (50) for supporting, from below, an object to be carried are disposed in the lower portion of the support section (30) on the right and left sides thereof such that a support position can be changed. The given path (4) is provided with a changing means (70) positioned between the right and left supports (50) for changing the support position provided by the supports (50). The movable body (9) is moved until it is stopped with the support section (30), which is now empty, opposed to the changing means (70), whereupon the latter is actuated, whereby the support position provided by the supports (50) can be changed. Thus, a plurality of kinds of objects to be carried can each be stably supported. The common changing means (70) simplifies the configuration and operation and enables the support position provided by the right and left supports (50) to be changed quickly and reliably.

Abstract: The method and facilities for movement of vehicles over long distances are presented. The Method is comprised of the following steps: (a) connecting at least two main rollers displaced over a long distance: one in a port of departure and one in a port of arrival, by a series of closed-loop, light, strong cable (consisting of one or more loops) located at least in one of the following places: in the air, on the ground surface, on the water surface; (b) supporting said cable by at least one of the following devices: wings, air balloons, columns, rollers; (c) connecting at least one of said main rollers to an engine; (d) running said engine; (e) connecting at least one load vehicle to said cable at departure port; (f) accelerating said vehicle; (g) disconnecting said vehicles from said cable at arrival port; (h) braking said vehicles.

Abstract: A safety rail system includes a U-bracket for attaching a safety rail to an existing structural member, and an end stop that allows trolleys to be placed on a rail with one hand and removed with two hands, without any removal of bolts and without using any tools. The end stop is in a first position by the force of gravity that prevents a trolley from coming off the end of the rail. When a trolley is to be placed on the rail or removed from the rail, the end stop is pivoted upwards to allow wheels of the trolley to pass below the end stop. The end stop then returns to its normal, lower position, which prevents a trolley from accidentally coming off the end of the rail.

Abstract: The invention relates to an overhead conveyor system which includes a rail, at least one carriage which is provided with wheels and which is adapted to run along the rail and support a load suspended from the carriage, a rotatable drive shaft which extends along the rail and is located perpendicularly above the rail, and a drive arranged on each carriage and adapted to drive, in contact with the drive shaft, the carriage along the rail. The drive includes at least one wheel which is inclined relative to the longitudinal direction of the drive shaft and has a contact surface spring-loaded against the drive shaft, the spring load of the drive being independent of the load suspended from the carriage.

Abstract: The installation enables the downhill transportation of passengers from a higher station to a lower station along a rail. Cars that are guided along the rail are equipped with the first of two interacting elements of an electromagnetic braking device, in particular with one or more permanent magnets, and the guide rail being equipped with the second elements, in particular braking strips made from an electrically conductive nonmagnetizable material, such as copper or aluminum, which interact with said first elements of the braking device. Each car is equipped with one or more first elements with an operating brake that is adjustable as a function of its load, and with one or more first elements of a safety brake that is activatable during downhill travel.

Abstract: The installation conveys persons from a valley station to a mountain station and for carries individuals from the mountain station to the valley station via carriages that are guided along a track formed by a running rail. The installation has a cableway system with a haulage cable and transport assemblies that can be coupled thereto and are intended for persons and for conveying devices that convey the carriages from the valley station to the mountain station. The haulage cable is guided over cable-deflecting pulleys in the valley station and in the mountain station. Guide rails are provided in the valley station and in the mountain station along which the conveying devices and transport assemblies, uncoupled from the haulage cable, are guided around the cable-deflecting pulleys with conveying wheels. Bypass rails are connected to the guide rails via diverters both in the valley station and in the mountain station.

Abstract: A shock absorbing apparatus that absorbs a shock produced by an abutment of a traveler on a stop member when the traveler is brought to a stop at a predetermined position includes a leaf spring arranged adjacent the stop member in a substantially face-to-face relationship with a guideway. A free end of the leaf spring abuts slightly with the guideway or with a slight clearance from the guideway. A mid portion of the leaf spring is curved gradually from the guideway. The traveler is provided with a contact portion that passes over the free end of the leaf spring to contact with the curved mid portion before the traveler abuts with the stop member at the predetermined position.

Abstract: A load bearing material handling system including a rail having a hanger portion, a body portion defining a conduit extending for at least a portion of the length of the rail and a flange portion adapted to movably support a trolley thereupon. A splice connector may be disposed between adjacent, sequential ones of a plurality of rail segments which are coupled together to define the rail. The rail supports a pneumatic trolley having a pair of opposed frame members and a housing extending therebetween and which is adapted to supply air to a pneumatically actuated tool which is movably supported by the trolley along the rail. The rail may also support a load bearing trolley. Both the pneumatic and load bearing trolleys include opposed frame members having at least one trolley wheel adapted for rolling contact with a runway surface on the rail and at least one safety lug which projects over the plane of the runway surface of the rail so as to prevent the trolley from being inadvertently removed from the rail.