Patents Assigned to Pandrol
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Publication number: 20070246559Abstract: Fastening for a rail and arrangement for fastening of rails The invention relates to a fastening for a rail for securing a rail (10) whose foot is resting on a concrete sleeper (16), comprising at least one elastic clip (20) having several legs of which at least one leg extends inside a shoulder (42, 44) or channel of a holder (24) that is connected to the concrete sleeper, and at least one further leg rests on the rail foot. For securing a rail to the necessary extent with simple design means and in space-saving form, it is suggested that the holder (24, 26) is arranged detachably in the concrete sleeper (16) or in a plate element resting thereon and is connected to the concrete sleeper by a bolt element.Type: ApplicationFiled: April 28, 2005Publication date: October 25, 2007Applicants: BWG GMBH & CO., KG, VAE GMBH, PANDROL LIMITED, VAE EISENBAHNSYSTEME GMBHInventors: Hubertus Hohne, Hans-Ulrich Dietze, Heinz Ossberger, Josef Leitner, John Porrill, David Seeley
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Patent number: 7080791Abstract: An assembly for supporting a railroad rail on a tie includes an abrasion plate arranged to be positioned on a tie, and a pad disposed on the abrasion plate and adapted to receive the rail. The pad and plate have mating depressions and buttons arranged in complementary patterns that provides means of interlocking the two components to resist migration in both longitudinal and lateral directions. Preferably the depressions are larger than the buttons to allow some play. The two elements may be attached to each other prior to transportation by a combination of a projection on one and a capturing hole in the other. The projection may be a stake having an enlarged head. The plate may be secured to the tie by an epoxy and may have irregularities on the bottom to be gripped by the epoxy. A seal may also be provided around the supports for the rail clips to keep sand and other extraneous matter from the interface between the plate and the tie. The seal may be provided on the plate or the pad.Type: GrantFiled: August 29, 2003Date of Patent: July 25, 2006Assignee: Pandrol LimitedInventors: William Hugo Geissele, Frank Howard Coats
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Patent number: 6923381Abstract: A railway rail fastening clip, for fastening a railway rail to an underlying rail foundation, is formed of an elongate plate shaped such that a central region of the plate has in profile the form of a letter C, a first end region of the plate extending from one side of the central portion of the plate to form a base portion of the clip for engaging a rail fastening anchoring device secured to the rail foundation and a second end region of the plate extending from the opposite side of the central region of the plate to form a toe portion of the clip for bearing on the railway rail. The toe portion of the clip is provided with an insulator retainer for retaining thereon a toe insulator for electrically insulating the clip from the rail.Type: GrantFiled: October 9, 2001Date of Patent: August 2, 2005Assignee: Pandrol LimitedInventors: Barry Marshall, Christopher Gardner, Lee Michael Chapman
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Patent number: 6761322Abstract: A railway baseplate assembly comprising a baseplate (30), a cushioning pad (20) for lying beneath the baseplate (30), and means (10) for securing the baseplate (30) to an underlying rail foundation when the assembly is in use, wherein the said securing means (10) comprise a non-screw-threaded post member (12), which post member (12) extends, when in use, through holes (21, 31) provided in the baseplate (30) and cushioning pad (20) in such a way as to engage the said baseplate (30).Type: GrantFiled: May 23, 2002Date of Patent: July 13, 2004Assignee: Pandrol LimitedInventors: John Phillip Porrill, Stephen John Cox
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Patent number: 6651897Abstract: A railway rail fastening assembly, for suspending a railway rail (100) at discrete locations along its length above a rail foundation, comprises a pair of elastic members (5) for support the head of the rail (100), a pair of brackets (6) for applying a lateral clamping force to respective ones of the elastic members (5), a baseplate (1) having first and second shoulders (3,4), and a pair of wedge members (7), each wedge member (7) being inserted between an associated one of the shoulders (3,4) and an adjacent bracket (6) thereby to maintain the said lateral clamping force, wherein at least one (4) of the said first and second shoulders (3,4) is removable from the said baseplate (1) and is held in position on the baseplate (1) by the said lateral clamping force.Type: GrantFiled: April 24, 2002Date of Patent: November 25, 2003Assignee: Pandrol LimitedInventors: John Phillip Porrill, Stephen John Cox
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Patent number: 6648238Abstract: A rail pad (1), for electrically isolating a railway rail (2), comprises a rail seat portion (11) for supporting a foot of the rail (2), a pair of upstands (12) joined to opposite edges of the rail seat portion (11) of the pad (1) by respective webs such that respective channels (13) for directing water away from the rail are defined between the rail seat portion (11) of the pad (1) and each adjacent upstand (12). Such a pad provides improved wet electrical resistance.Type: GrantFiled: March 12, 2001Date of Patent: November 18, 2003Assignee: Pandrol LimitedInventor: Roger David Larke
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Patent number: 6499667Abstract: In a railway sleeper assembly, a pair of rail insulators (3) designed for use with a steel railway sleeper (1) which includes at the opposite sides of each intended rail location thereon a pair of openings (6) for receiving the respective stems (8) of a pair of shoulders (4), are each operatively disposed, when in use, between a foot of the rail (2) and the respective proximate shoulder (4). Each insulator (3) includes a member (11) which, when the insulator is in use, operatively extends below a top surface of the sleeper (1) and into the associated opening (6) so as to lie between the walls of that opening (6) and the stem (8) of the associated shoulder (4), thereby to retain the shoulder (4) in its operative position relative to the sleeper.Type: GrantFiled: May 16, 2001Date of Patent: December 31, 2002Assignee: Pandrol LimitedInventors: David Rhodes, David John Gosling
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Patent number: 6342287Abstract: An elastic under-rail pad, made of an elastic plastic or rubber, has two opposite sides. At least one of its opposite sides presents a surface which at least partly is defined at least approximately by a simple sinusoidal or cosinusoidal trigonometric function or by a composite sinusoidal and cosinusoidal trigonometric function, so that at least on a part of one of the two opposite sides of the elastic pad there are formed protrusions (3) and cavities (4) arranged alternately and changing softly into one another. The elastic pad is used mainly in permanent ways of rail transport as an element attenuating vibrations and absorbing dynamic loads transmitted by railway vehicles to underlying rails.Type: GrantFiled: March 24, 1999Date of Patent: January 29, 2002Assignee: Pandrol LimitedInventors: Andrzej Kaczmarek, Irena Walkowska, Antoni Cala, Krystyna Chabolowska, Jan Durski, Jan Jawecki, Andrzej Kamiński, Andrzej Oczykowski
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Patent number: 6334396Abstract: A track maintenance vehicle having a workhead that is pivotally mounted to the superstructure at its upper end. The workhead includes a blowing tube mounted at its lower end and a vertical cylinder that is selectively extendable and retractable to control the height of the blowing tube. The vehicle includes a control system that controls the height of the blowing tube as well as the left/right and fore/aft positions of the workhead. The track maintenance vehicle further includes an automated height control system that automatically extends and retracts the vertical cylinder to position the blowing tube at a uniform height despite its lateral disposition.Type: GrantFiled: August 2, 1999Date of Patent: January 1, 2002Assignee: Pandrol Jackson, Inc.Inventors: William E. Perry, Kevin A. Hansen
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Patent number: 6318939Abstract: A fastening device (20), for use in holding a base plate down to a railway sleeper. The device is of the type having a head portion (21), a screw-threaded shank portion (22) and an intermediate portion (23) connecting the head portion (21) to the screw-threaded shank portion (22), with the intermediate portion (23) and the screw-threaded shank portion (22) being of smaller diameter than the head portion (21).Type: GrantFiled: April 14, 2000Date of Patent: November 20, 2001Assignee: Pandrol LimitedInventor: Alain Avaux
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Publication number: 20010023898Abstract: A rail pad (1), for electrically isolating a railway rail (2), comprises a rail seat portion (11) for supporting a foot of the rail (2), a pair of upstands (12) joined to opposite edges of the rail seat portion (11) of the pad (1) by respective webs such that respective channels (13) for directing water away from the rail are defined between the rail seat portion (11) of the pad (1) and each adjacent upstand (12). Such a pad provides improved wet electrical resistance.Type: ApplicationFiled: March 12, 2001Publication date: September 27, 2001Applicant: Pandrol LimitedInventor: Roger David Larke
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Patent number: 6079631Abstract: A railway rail support assembly (3), for resiliently suspending a railway rail (1) above a track foundation (2) at discrete locations along the rail (1), has rail supporting means through which a predetermined clamping load is exerted on the said rail (1) such that the assembly (3) has a desired resistance to longitudinal creep therethrough of the rail (1). The rail supporting means are preferably attached, when the assembly (3) is in use, to an approximately horizontal upper surface of the said track foundation (2). Such an assembly (3) may be provided by first and second brackets (31, 32) and first and second elastic members (33, 34). Each of the said first and second brackets (31, 32) has a bearing part (312, 322) and a base part (311, 321) (311, 321), the bearing part (312, 322) being located adjacent to either sides of the rail (1) when the assembly (3) is in use and the base part (311, 321) being located on an upper surface of the said track foundation (2).Type: GrantFiled: December 5, 1996Date of Patent: June 27, 2000Assignees: Pandrol Limited, Hermann J. OrtweinInventors: Hermann J. Ortwein, David Ronald Seeley, Stephen John Cox, Kenneth George Allen, Brian George Conroy, Martin David Somerset, Peter William Brindley, Andrew Garwood
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Patent number: 5865592Abstract: A stone metering system for a railroad track maintenance vehicle providing improved accuracy in stone delivery. The system includes a surge hopper, a number of metering augers, and a corresponding number of splitters. The metering augers convey ballast stones from the surge hopper to the corresponding splitters, which divide the stones evenly between a number of blow tubes. The pitch of the auger screw flights is increased from the inlet end of the screw to "expand" the stone and reduce the production of fines. In addition, the diameter of the final screw flight is reduced at the outlet end of the auger to provide a consistent and even flow of stone into the splitters. The splitters are dynamically adjustable to provide even distribution between the blow tubes regardless of the cant to the rails. The desired amount of stone is delivered to the tubes by rotating the auger screw the number of full or partial revolutions associated with the amount.Type: GrantFiled: June 6, 1995Date of Patent: February 2, 1999Assignee: Pandrol Jackson, Inc.Inventor: Kevin A. Hansen
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Patent number: 5735458Abstract: A railway rail anchoring device, for use with a railway rail-fastening clip which is approximately M-shaped in plan and has first and second leg portions and a rail-bearing portion, comprises a base member and first and second clip-retaining members connected together by the base member such that the first clip-retaining member is spaced apart from the second clip-retaining member so as to define between the first and second clip-retaining members an opening for receiving the rail-bearing portion of such a clip.Type: GrantFiled: August 30, 1996Date of Patent: April 7, 1998Assignee: Pandrol LimitedInventors: Trevor P. Brown, Brian G. Conroy, Stephen J. Cox, Christopher Gardner, Roger D. Larke, Barry Marshall, Jan Svendsen
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Patent number: 5718376Abstract: A resilient rail-fastening clip has a first straight portion (11) for locating the clip in a clip anchoring device (2) when the clip is in use, a second bent portion (12), a third heel portion (13), a fourth bend portion (14) and a fifth toe portion (15). When viewed such that lower most points of the first and fifth portions (11 and 15) of the clip lie in a horizontal plane, proceeding from the first portion (11), the second portion (12) appears to bend up out of that plane towards and then away from a vertical plane passing through the fifth portion (15). The clip (1) is used in an assembly including a baseplate (2) having a non-vertical stop (21d) on its shoulder (21) up which the clip (1) slides during installation until brought to rest through friction at a desired height above the rail (3).Type: GrantFiled: January 6, 1997Date of Patent: February 17, 1998Assignee: Pandrol LimitedInventors: Stephen John Cox, Barry Marshall, Christopher Gardner, Martin David Somerset, Brian George Conroy
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Patent number: 5678762Abstract: In an assembly for use in fastening a railway rail to an underlying rail foundation, a resilient railway rail fastening clip (1, 2,3) has at least one portion (1a) which when in use bears on, and extends substantially parallel to, a flange (301) of an adjacent railway rail (300), and retains an insulator (13, 13') for electrically insulating the clip (1, 2, 3) from the rail (300) when in use. The insulator (13) is held in engagement with the clip (1, 2, 3), which has a rail bearing portion of substantially circular cross-section, such that it can rotate about the longitudinal axis of the said rail bearing portion (1a). Unlike the prior art the insulator is self-aligning on the rail flange (301) when the rail (300) moves. One insulator (13, 13') disclosed has at least two load bearing surfaces (13a), such that it may be rotated so as to present an unworn load bearing surface (13a) to the rail flange (301).Type: GrantFiled: November 14, 1995Date of Patent: October 21, 1997Assignee: Pandrol LimitedInventors: Timothy Alan Wood, Kevin Stubbs, Stephen John Cox, Martin David Somerset, Brian George Conroy
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Patent number: 5617639Abstract: A transducer for use in a railroad track maintenance chord reference system for measuring the vertical and horizontal position of the rails of the track. The transducer is carried by a carriage riding on the rails and provides a signal indicative of the offset between the reference chord and the rails. Each transducer includes a uncounterbalanced arm mounted to the transducer housing by a low friction carriage. The arm engages and follows a reference chord causing the arm to move as the carriage moves with respect to the chord. A linear displacement transducer is mounted within the housing to provide a signal indicative of the arm position and therefore indicative of the position of the rails.Type: GrantFiled: September 23, 1994Date of Patent: April 8, 1997Assignee: Pandrol Jackson, Inc.Inventor: William E. Perry
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Patent number: 5605099Abstract: A maintenance vehicle and associated method for measuring and correcting the level of a railroad track in a single pass. An instrument carriage, or frog, is towed by and in fixed relationship to the maintenance vehicle. The frog carries at least one inclinometer to measure at least one of longitudinal level and crossfall. As the vehicle periodically stops to work the track e.g. tamping or stoneblowing), the inclinometers are provided with the settling time necessary for accurate readings. In an additionally disclosed method, the track is measured and modeled prior to working using a primary measurement system and is then measured and modeled a second time while the track is worked using the frog.Type: GrantFiled: December 22, 1994Date of Patent: February 25, 1997Assignee: Pandrol Jackson, Inc.Inventors: Dennis A. Sroka, William E. Perry, Bruce W. Bradshaw, David M. Johnson
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Patent number: 5605284Abstract: An elastic rail clamp (10), for fastening a rail to an underlying rail plate or rail tie (1). The clamp is of the type comprising a pair of substantially parallel members (19) folded into a D configuration so as to have a front toe portion (16) adapted to seat on a flange of the rail, which toe portion is formed by respective free end regions (18) of the substantially parallel members, and to also have a base portion (11) adapted to seat in a slot (4) in the rail plate or a shoulder secured to the rail tie.Type: GrantFiled: August 7, 1995Date of Patent: February 25, 1997Assignee: Pandrol LimitedInventor: Hartley F. Young
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Patent number: 5584641Abstract: A stone metering system for a railroad track maintenance vehicle providing improved accuracy in stone delivery. The system includes a surge hopper, a number of metering augers, and a corresponding number of splitters. The metering augers convey ballast stones from the surge hopper to the corresponding splitters, which divide the stones evenly between a number of blow tubes. The pitch of the auger screw flights is increased from the inlet end of the screw to "expand" the stone and reduce the production of fines. In addition, the diameter of the final screw flight is reduced at the outlet end of the auger to provide a consistent and even flow of stone into the splitters. The splitters are dynamically adjustable to provide even distribution between the blow tubes regardless of the cant to the rails. The desired amount of stone is delivered to the tubes by rotating the auger screw the number of full or partial revolutions associated with the amount.Type: GrantFiled: May 26, 1994Date of Patent: December 17, 1996Assignee: Pandrol Jackson, Inc.Inventor: Kevin A. Hansen