Deadening Noise Patents (Class 238/382)
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Patent number: 11688379Abstract: An acoustic system is provided for the perfect absorption of bending waves. The acoustic system includes a longitudinally extending substrate (plate or beam) defining upper and lower opposing major surfaces. At least two mechanical resonators are coupled to the upper major surface and separated by a distance dimension that may be based on a fraction of a magnitude of the wavelength of a selected bending wave. Each mechanical resonator includes a rigid mass component and a connecting element. The mechanical resonators are configured to block or absorb bending waves that propagate through the substrate. The connecting elements maintain the rigid mass component an elevated distance from the upper major surface of the beam when in a rest position. The connecting element can be a spring and damper; a flexible rubber/plastic component with an axial stiffness; or a base connecting component with a flexible arm, optionally with vibration damping.Type: GrantFiled: August 17, 2020Date of Patent: June 27, 2023Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.Inventors: Taehwa Lee, Hideo Iizuka
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Patent number: 11174597Abstract: A clip assembly for securing first and second tuned mass dampers to respective first and second sides of a rail. The clip assembly includes a bar element having a connector portion extending between first and second ends thereof and formed to be positioned in a predetermined location relative to the rail at least partially under a foot of the rail, and a first clamping arm connected with the connector portion at the first end of the connector portion, the first clamping arm being formed to engage the first tuned mass damper. The bar element also includes a linkage section located at the second end of the connector portion. The clip assembly includes a second clamping arm extending between upper and lower ends thereof, the lower end comprising a locking portion securable to the linkage section, and the upper end being formed for engagement with the second tuned mass damper.Type: GrantFiled: September 17, 2018Date of Patent: November 16, 2021Assignee: Polycorp Ltd.Inventor: Richard Theodore Ellis
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Patent number: 10227219Abstract: Rail (10, 30) for use at boom hinges (5) of a crane (1), extending longitudinally from one end (11) to an opposite end (12), comprising a rail head (13, 33) having a running surface (131) for a wheel of a railway vehicle, a rail foot (14, 18, 38) for fastening the rail, and a web (15) connecting the rail head to the rail foot and interposed between the rail head and the rail foot, wherein the rail head is continuous along the length of the rail. The rail comprises a resilient member (16, 36) extending across the web (15) from the one end (11) of the rail over a length shorter than the length of the rail in order to provide a resiliency of the rail head (13, 33) relative to the rail foot (18, 38) over a length of extension of the resilient member.Type: GrantFiled: July 8, 2014Date of Patent: March 12, 2019Assignee: HF Holdiing SAInventors: Bolom Awi Abalo, Michel Lens
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Patent number: 9822490Abstract: The invention relates to a vibration absorber arrangement (2) for attaching at least one vibration absorber (4) to a rail (1), comprising: a clamping means (3) which has a clamp fastening portion (12) and a fastening portion (11) for at least one vibration absorber (4) on the outside thereof, wherein the clamp fastening portion (12) can be clamped between one end (16) of a clamp (5) and a foot (8) of the rail (1) and the fastening portion (11) presses with its inside against a web (9) of the rail (1), the clamp (5) being formed as an integral spring clip.Type: GrantFiled: December 6, 2012Date of Patent: November 21, 2017Inventor: Gunther Veit
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Patent number: 9004372Abstract: A bonded, direct fixation fastener as supportive structure for a rail on a railroad tie or bed comprising: a rail plate, wherein the rail plate has a generally horizontal center portion having a lower face and an upper face and defining a rail plate horizontal plane, and wherein the rail plate center portion extends at a first angle from opposing sides as rail plate tongues above the rail plate horizontal plane, the rail plate having a rail securing device; a bed plate comprising a generally horizontal center portion, an upper bed plate face defining a bed plate horizontal plane, and a pair of opposing bed plate tongues extending from opposing sides of the bed plate horizontal center portion disposed at a second angle above the bed plate horizontal plane; a horizontal elastomeric portion of relatively lower durometer hardness encapsulating at least a portion of the bed plate and at least a portion of the rail plate; and vertical elastomeric portions of relatively higher durometer hardness encapsulating at leaType: GrantFiled: August 29, 2012Date of Patent: April 14, 2015Assignee: L. B. Foster CompanyInventors: Robert Alsop, Korhan Ciloglu, Hakan Eksi, Michael O'Connell
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Publication number: 20140353393Abstract: The invention relates to a noise reduction device (1) for installation on a traffic route, comprising at least one base element (7) and at least one wall element (8), the base element (7) having a top face (9) and a bottom face (15), and the wall element (8) is disposed on the top face (9) of the base element (7). The bottom face (15) of the base element (7) is inclined at an angle (16) relative to the horizontal.Type: ApplicationFiled: November 21, 2012Publication date: December 4, 2014Applicant: ART ASAMER RUBBER TECHNOLOGY GMBHInventors: Thomas Danner, Bernhard Lichtberger, Erich Mayrhofer
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Patent number: 8876014Abstract: The present invention relates to a polyurethane ballast layer, the method for preparing the same and a railway comprising the polyurethane ballast layer. The polyurethane ballast layer provided in this invention comprises a polyurethane-filled ballast layer and a polyurethane external protective layer, wherein the polyurethane-filled ballast layer comprises ballasts and polyurethane foam filled in the space among the ballasts. The polyurethane ballast layer provided in this invention can reduce the probability of ballast crashing, shifting and cracking under heavy load, and separate the ballast track from the outside environment to prevent rain, snow and wastes from entering into the internal space of the ballast track bed. Furthermore, the polyurethane ballast layer can keep the polyurethane foam filled in the ballasts layer away from water in the outside environment to avoid hydrolysis.Type: GrantFiled: April 18, 2011Date of Patent: November 4, 2014Assignee: Bayer MaterialScience AGInventors: Chenxi Zhang, Gang Sun, Yi Shen, Hui Zhao
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Patent number: 8870089Abstract: A system and methods for providing variable distribution and access control for purchased event tickets are described. In one embodiment, a network-based system receives an order for electronic tickets purchased by a buyer, receives one or more recipients other than the buyer for one or more of the electronic tickets, receives delivery options for the recipients from the buyer, receives delivery information for the recipients from the buyer, and delivers electronic ticket information to the recipients. Other embodiments are described and claimed.Type: GrantFiled: December 1, 2008Date of Patent: October 28, 2014Assignee: Stubhub, Inc.Inventors: Ashley Gibson, Cass Patrick Costello, Geoffrey Wolfe, Julian Green
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Patent number: 8763924Abstract: A profiled element for damping sound vibrations on rail lines including a first main surface, which is designed and dimensioned such that it can be attached as a support surface to sections of the rail web without having to provide an adhesive layer, wherein the profiled element further has at least one recess on a front surface located opposite of the support surface, wherein the at least one recess in the front surface is designed for the positive engagement of an elastic fixing element for fixing the profiled element against the rail web, and at least one widened region of the profiled element in the region of the front surface, said widened region present in the lower region of the front surface in an installed position.Type: GrantFiled: October 22, 2010Date of Patent: July 1, 2014Assignee: Vossloh Werke GmbHInventors: Winfried Bösterling, Michael Harraβ, Jörg Happe, Dirk Vorderbrück
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Patent number: 8602318Abstract: The invention concerns a method for covering parts of a rail (1) for railway vehicles which are not in contact with the vehicle wheels, said method comprising applying a rubber jacket (6) on said parts and fixing said jacket to the rail, said jacket having outer lateral sides which extend along the rail, and for a predetermined load exerted by the vehicle on the rail, a distribution of said load between a first fraction exerted on the rail head (3) and a second fraction of said load exerted on the rail base (4) is determined, the geometry of each lateral side being configured to form a non-rectilinear profile allowing said distribution between said first and second fraction.Type: GrantFiled: September 21, 2005Date of Patent: December 10, 2013Assignee: Feronia S.A.Inventor: Joseph Rode
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Patent number: 8544389Abstract: A guide rail that is provided in a track and is brought into contact with a guide wheel of a vehicle to restrict a rolling direction of a running wheel of the vehicle, to thereby guide the vehicle along the track, includes: a rail that comprises a guide portion formed with a guide rail surface with which the guide wheel is brought into contact; and a vibration-isolating member that is provided so as to be in contact with a back surface of the guide rail surface of the guide portion.Type: GrantFiled: March 30, 2010Date of Patent: October 1, 2013Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Hiroyuki Kono, Yoichi Kameda, Kuniaki Oka
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Patent number: 8353464Abstract: A Tuned Mass Damper (TMD) for reducing vibration and noise radiation from rails incorporates a series of oscillation mass (8) of different sizes held in position by layers of resilient material (9) and attached to the rail via several steel mounting plates (4). Each mounting plate (4) is fixed to the rail by two magnets (5). A bolt (10) is inserted through the mounting plates (4), resilient layers (9) and oscillation masses (8) alternatively. The bolt (10) is fixed to a middle mounting plate (4) such that different compressive forces can be provided on the two sides by tightening nuts (11) to different pre-set torques. When the resonance frequency of the oscillation masses (8) is tuned to that of rail, most of the rail vibration energy at resonance frequency is transferred to the oscillation masses (8) and eventually dissipated in the resilient layers (9).Type: GrantFiled: September 16, 2008Date of Patent: January 15, 2013Inventor: Wai Lun Ho
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Publication number: 20120312887Abstract: An improved track device includes rail tubes and rail tube supports forming tracks separated by cross members and joined at ferrules in embodiments having offset ferrules and embodiments having staggered ferrule joints.Type: ApplicationFiled: August 21, 2012Publication date: December 13, 2012Inventors: Will Cloake, Christopher S. Kennard, Wayne Carmona
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Publication number: 20120228394Abstract: A profiled element for damping sound vibrations on rail lines including a first main surface, which is designed and dimensioned such that it can be attached as a support surface to sections of the rail web without having to provide an adhesive layer, wherein the profiled element further has at least one recess on a front surface located opposite of the support surface, wherein the at least one recess in the front surface is designed for the positive engagement of an elastic fixing element for fixing the profiled element against the rail web, and at least one widened region of the profiled element in the region of the front surface, said widened region present in the lower region of the front surface in an installed position.Type: ApplicationFiled: October 22, 2010Publication date: September 13, 2012Applicant: VOSSLOH WERKE GMBHInventors: Winfried Bösterling, Michael Harrass, Jörg Happe, Dirk Vorderbrück
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Publication number: 20100258647Abstract: A Tuned Mass Damper (TMD) for reducing vibration and noise radiation from rails incorporates a series of oscillation mass (8) of different sizes held in position by layers of resilient material (9) and attached to the rail via several steel mounting plates (4). Each mounting plate (4) is fixed to the rail by two magnets (5). A bolt (10) is inserted through the mounting plates (4), resilient layers (9) and oscillation masses (8) alternatively. The bolt (10) is fixed to a middle mounting plate (4) such that different compressive forces can be provided on the two sides by tightening nuts (11) to different pre-set torques. When the resonance frequency of the oscillation masses (8) is tuned to that of rail, most of the rail vibration energy at resonance frequency is transferred to the oscillation masses (8) and eventually dissipated in the resilient layers (9).Type: ApplicationFiled: September 16, 2008Publication date: October 14, 2010Inventor: Wai Lun Ho
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Patent number: 7775455Abstract: An object of the invention is to provide a railway rail supporting pad that allows easy operations at a field site. In the invention, there is provided an outer bag made of a synthetic resin sheet housing a first inner bag and a second inner bag, the first inner bag containing a first reaction solution, the second inner bag containing a second reaction solution, the first and the second inner bags being configured to open at least partly due to outer pressure, the outer bag being provided with a separable sub bag in a communicative manner, an inlet of the sub bag as a communication part between the outer bag and the sub bag being closed by an easily debondable sealed portion, an interior of the sub bag being formed with a plurality of partitioning spaces partitioned by another easily debondable sealed portion.Type: GrantFiled: February 1, 2007Date of Patent: August 17, 2010Assignee: Daiwa Gravure Co., Ltd.Inventor: Shoji Kawai
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Patent number: 7717352Abstract: A rail seat for rails having a lower patten provided on both sides with upper support surfaces, with a ribbed plate which is connected to a support by fastenings and with push-down elements for retaining the rail. The rail seat including an elastic intermediate plate arranged between the ribbed plate and the support, wherein the intermediate plate presses the ribbed plate, in a load-free condition, against an upper abutment. The ribbed plate is pressed down in a direction of the support with compression of the elastic intermediate plate. The rail seat further includes a spring element arranged between the support and the ribbed plate, wherein the spring element is connected in parallel to produce a spring action of the elastic intermediate plate.Type: GrantFiled: October 2, 2007Date of Patent: May 18, 2010Assignee: Kölner Verkehrs-Betriebe AGInventors: Herman-Josef Löffelsend, Uwe Wenglorz
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Patent number: 7641129Abstract: A damper (18) for a rail (10), includes a deformable material (20) and an elongate resonant member (20, 24), the resonant member being of a stiff material as compared to the deformable material and being sized to exhibit a resonant frequency in the range of vibration frequencies of the rail, wherein the resonant member includes a clip (26) extending therefrom so as to retain the resonant member and the deformable material in place on the rail. The clip preferably extends laterally of the resonant member to grip the underside of the rail. The clip can have an engagement formation on the end thereof, to engage with a like formation of a further damper located on the opposing side of the rail.Type: GrantFiled: February 27, 2004Date of Patent: January 5, 2010Assignee: Corus UK LimitedInventor: David Farrington
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Patent number: 7533829Abstract: A rail-mounting assembly has a generally rectangular base frame formed with a window and having a pair of diagonally opposite abutments at respective ends of the window and having downwardly and inwardly inclined faces. A top plate in the window has a lower face above a lower face of the frame, a pair of bosses projecting upward from the top plate and each juxtaposed with a respective one of the abutments and each having a downwardly and inwardly inclined face spacedly juxtaposed with the downwardly and inwardly inclined face of the respective abutment. A one-piece elastomeric body is bonded to and interposed between the inclined faces of the frame and of the top plate.Type: GrantFiled: February 27, 2006Date of Patent: May 19, 2009Inventors: Wilbur F. Osler, Scott D. Osler
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Patent number: 7427035Abstract: A rail damper including an elongate damping device and a clip for supporting the damping device, the clip having a retention aperture for receiving part of the rail and, further, a recess adapted to receive the damper. This is particularly (although not exclusively) suited to dampers in which an elongate hollow rigid section encloses a deformable material in which is suspended one or more resonant members. The clip can be adapted to fit around the foot of the rail. It can include one or more tongues extending alongside the web of the rail. This will assist in separating the damper from the web while still allowing vibrations to be conducted from one to the other. The tongues can be any suitable height, for example the full height of the web, or the full height of the dampers, or less than one or other such heights.Type: GrantFiled: February 27, 2004Date of Patent: September 23, 2008Assignee: Corus UK LimitedInventors: David Farrington, Christopher John Cedric Jones
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Publication number: 20080116291Abstract: An object of the invention is to provide a railway rail supporting pad that allows easy operations at a field site. In the invention, there is provided an outer bag made of a synthetic resin sheet housing a first inner bag and a second inner bag, the first inner bag containing a first reaction solution, the second inner bag containing a second reaction solution, the first and the second inner bags being configured to open at least partly due to outer pressure, the outer bag being provided with a separable sub bag in a communicative manner, an inlet of the sub bag as a communication part between the outer bag and the sub bag being closed by an easily debondable sealed portion, an interior of the sub bag being formed with a plurality of partitioning spaces partitioned by another easily debondable sealed portion.Type: ApplicationFiled: February 1, 2007Publication date: May 22, 2008Inventor: Shoji Kawai
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Patent number: 7374109Abstract: A rail cushion assembly including a resilient rail pad for placement against the lower surface of a railroad rail, and an underlying abrasion plate for placement against a railroad tie. The rail pad includes a pair of slots that extend through opposite end sloping edge panels that are adjacent to the lower surface of the rail pad. The abrasion plate is a flat, sheet-like component that has a generally similar shape as that of the rail pad but includes a pair of outwardly-extending connection tabs, one at each of a pair of opposite edge surfaces. The connection tabs of the abrasion plate are received in respective slots of the rail pad to provide the rail cushion assembly in ready-to-use form and without requiring on-site assembly of the components.Type: GrantFiled: April 6, 2006Date of Patent: May 20, 2008Assignee: Crown Plastics CompanyInventor: Gregg A. Ellerhorst
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Patent number: 7331534Abstract: An apparatus for use as a pad and for placement intermediate a rail and a railroad tie includes a plurality of geometrical recesses that extend into the pad, either at a normal longitudinal axis or at an angle other than normal. An elastomeric material is used to form the pad. The recesses may include any geometric shape in plan at the surface of the pad. If desired, a tiered structure, is provided for any of the recesses. According to a modification, any of the recesses are modified to include a longitudinal axis that is not normal. The modified recesses include any geometrical, polygonal, circular, or oval shape in plan at the surface of the pad.Type: GrantFiled: September 23, 2002Date of Patent: February 19, 2008Inventor: Philip Jeffrey McQueen
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Patent number: 7278588Abstract: An elastomeric member is arranged beneath a railroad tie to adjust the modulus of track over a relatively stiff structure such as a bridge or tunnel. Methods or combinations that include an elastomeric member are employed to reduce the modulus of a track over a relatively stiff structure to a magnitude approximating the modulus of track over the terrain surrounding the structure.Type: GrantFiled: November 8, 2004Date of Patent: October 9, 2007Assignee: Northwest Rubber Extruders, Inc.Inventors: Tom English, Joe Lucas, Jr., Dean Putnam
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Patent number: 7261244Abstract: An electrically-insulated tie plate for electrically isolating parts of a railroad rail system from each other. The electrically-insulated tie plate includes a base plate having a recessed area for receiving a railroad rail and a layer of electrically-insulating material covering portions of the base plate.Type: GrantFiled: November 7, 2005Date of Patent: August 28, 2007Assignee: Portec Rail Products, Inc.Inventors: William T. Urmson, Jr., John W. Mospan, John M. Downey
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Patent number: 7234647Abstract: The invention relates to a damping means for damping acoustic vibrations on rails. This damping means is, in particular, a body made of plastics and ferrous materials. The damping means is characterized by a chamber filling body, which consists of a thermoplastic and of metal constituents finely dispersed therein and is produced by extrusion or injection molding, whereby the density of the body is >2.4 g/cm3.Type: GrantFiled: April 7, 2003Date of Patent: June 26, 2007Assignee: Wirthwein AGInventors: Udo Wirthwein, Otto Kaulbersch, Dirk Vorderbrück
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Patent number: 7152807Abstract: A rail pad assembly and an associated method for use with a concrete rail tie. The rail pad assembly includes a rail pad for engagement with a metal rail, a protective sheet for engagement with a concrete rail tie, and means for attaching the rail pad to the sheet integrally formed in at least one of the rail pad and the protective sheet. In one specific example, the protective sheet is made from ultrahigh molecular weight polyethylene.Type: GrantFiled: August 24, 2004Date of Patent: December 26, 2006Inventor: James H. Nevins
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Patent number: 7100837Abstract: A rail seat which includes a) a rail tie b) a pair of rail fastening support shoulders mounted on said rail tie so that a rail can be held to the tie between said shoulders each shoulder having a a rail face and side portions on each side of said rail face extending away from the rail c) a rail pad adapted to lie on said tie between said shoulders which has a pair of projections extending parallel to the tie along side each side portion of each shoulder. The rail seat is adapted to be used with a deep post insulator and incorporates a rib on the support shoulder extending from each side portion against which a face of the rail pad projections abut to locate the pad in position to accommodate the post of the insulator. The rail pad projections are proportioned to prevent the pad from moving out of position under the creep load conditions present when rail cars pass over the rail seat.Type: GrantFiled: April 1, 2004Date of Patent: September 5, 2006Assignee: AirBoss Railway Products, Inc.Inventor: Hartley Frank Young
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Publication number: 20040026526Abstract: A railway wheel/rail squeal suppression, wheel/rail noise reduction and wear reduction arrangement includes a separate structure (14) carried by a rail. The separate structure has a saddle-like profile including a web portion (15) defining a running surface for supporting the wheel, and two flange portions (16a, 16b). The saddle-like profile is shaped substantially in conformity with the shape of the railhead, is located on top it and is mechanically de-coupled therefrom. Resilient means (17) is interposed between the web portion and the railhead (13). The web portion (15) has a thickness not less than about twice the thickness of the flange portions so as to resist detrimental compression of the resilient means (17) and transfer only a portion of wheel load to the rail, and the flange portions (16a, 16b) are connected to the rail so as to transfer a remaining wheel load thereto.Type: ApplicationFiled: August 18, 2003Publication date: February 12, 2004Inventor: Nils-Ake Nilsson
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Patent number: 6649237Abstract: A tube mat made of elastomer material in the form of an extrudate includes first and second front faces which are arranged in a vertical or angled manner in relation to the extrusion direction. A plurality of tubes extend in parallel in the extrusion direction between the two front faces. At least a portion of each tube is closed at adjustable distances whereby a closed air column respectively is formed and whereby the tube seal together with the tube mat forms a one-piece elastomer composite. A method for producing the tube mat is also provided in which after the extrusion, the tubes are closed at certain points by means of pressure and a pad roller, whereby beads and closing webs are produced. The pad roller is provided with pins that are distributed over the circumference of the roller. Vulcanization is carried out subsequently.Type: GrantFiled: June 11, 2001Date of Patent: November 18, 2003Assignee: Phoenix AGInventors: Bernd Pahl, Helmuth Blank
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Patent number: 6588677Abstract: An insulating rail boot encasing a rail embedded in concrete, asphalt or paver construction, including, shared right-of-way, dedicated right-of-way and at-grade crossing. The rail and the rail boot are secured in place by retaining clips. The rail boot has two exposed top surfaces and a plurality of longitudinal cavities within the body of the boot. The top surfaces of the rail boot are sloped away from the rail and are coextruded with a multi-durometer material that is more rigid and tougher that the elastomer of which the boot is primarily constructed. An outside edge of each top rail boot surface is positioned flush with a surface of the road material. This cooperation between the top surfaces of the rail boot and the road surface facilitates flow of water and debris away from the rail.Type: GrantFiled: November 2, 2001Date of Patent: July 8, 2003Assignee: Iron Horse Engineering Co.Inventors: Don R. Hofstetter, Sr., Mark Grundmann
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Patent number: 6481637Abstract: An apparatus for use as a pad and for placement intermediate a rail and a railroad tie includes a plurality of cylindrical recesses that extend into the pad. An elastomeric material is used to form the pad. The cylindrical recesses may include a tiered structure, a portion of which is aligned with at least one corresponding cylindrical recess that is disposed on an opposite side of the pad. The cylindrical recesses convert vertical loading into shear forces that are distributed within the pad. Deformation of the pad due to shear and Poisson's ratio occurs substantially within the pad itself thereby lessening the horizontal movement, or scrubbing action, of the pad upon the railroad tie and increasing the life expectancy of the pad and also providing a method for strain attenuation by the use of shear.Type: GrantFiled: November 20, 2000Date of Patent: November 19, 2002Inventor: Philip Jeffrey McQueen
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Patent number: 6468631Abstract: Elastic band-shaped base (1) made of rubber or of a material similar to rubber for insulating and absorbing vibrations and impact sound, specially track-bed matting, wherein the base is fitted with spaced tubes (2, 3) running parallel to the ground side (4) of the base on at least two planes (I, II). The tubes have a semicircular, semi-oval, or semi-ellipsoidal cross section. The invention is characterized in that two planes (I, II) are arranged at a distance (A) in relation to each other, irrespective of the total number of the planes of tubes, forming a continuous intermediate covering (5) running parallel to the ground side (4) of the base (1), in such a way that the smoothed down sides of the tubes (2, 3) all face the intermediate covering (5). The inventive design provides for advantageous construction parameters of the elastic base.Type: GrantFiled: July 21, 1999Date of Patent: October 22, 2002Assignee: Phoenix AktiengesellschaftInventors: Bernd Pahl, Jan Thiedeitz, Norbert Garbers, Michail Rabkin
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Patent number: 6409092Abstract: A superstructure arrangement for a track comprising a rail fastened to a securing device such as a ribbed plate which is disposed above a concrete sleeper, with an intermediate layer extending between the sleeper and the securing device. The rigidity of the intermediate layer is variable and rated so that at the maximum permissible stress in the rail, caused by bending under wheel lead, the elastic property changes to substantially non-elastic.Type: GrantFiled: January 10, 2000Date of Patent: June 25, 2002Assignee: BWG Butzbacher Weichenbau GmbH & Co. KGInventors: Albrecht Demmig, Hans-Ulrich Dietze, Hubertus Hohne, Sebastian Benenowski
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Patent number: 6402044Abstract: A method for reducing noises produced from a railroad when trains travel on rails. A vibration/noise damping member made of lead is fixed to the vertical rib portion of a rail, one side of a wheel, a joint bar for rails, or one side of a railroad overpass or iron bridge. The damper may have a plate shape or any other sectional shape. The vibration/noise damper effectively absorb and damp vibration energy and noises produced when trains travel on rails.Type: GrantFiled: January 14, 2000Date of Patent: June 11, 2002Assignee: Yugen Kaisha KoshinshaInventor: Shozaburo Sato
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Patent number: 6390382Abstract: A damper for reducing the track nose emitted by a rail system comprises a deformable material attachable to a surface of the rail, incorporating a plurality of elongate discontinuous resonant members of a stiff material as compared to the deformable material, sized to contain at least two resonant frequencies in the range of interest. The resonant members are suitably of steel or other metallic material. They can be of different profile, to form a resonant system with at least two resonant frequencies in the relevant frequency range. They are suitably embedded in the deformable material, to ensure adequate vibrational transfer from the rail to the resonant members and also provide environmental protection. The deformable member is visco-elastic, for example rubber or rubber-like material. This may be preformed and glued to the rail, or it can be cured in place on the rail. The damper is positioned on the rail at the junction between the web and the foot of the rail.Type: GrantFiled: September 6, 2000Date of Patent: May 21, 2002Assignees: Corus UK Limited, University of SouthamptonInventors: William Hodgson, John Barry Clarke, David Farrington, David John Thompson, Christopher John Cedric Jones
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Patent number: 6354512Abstract: A method of making a polymer coated rail in which a rail to be coated (10) is positioned on a mould base (11) in an inverted manner, so that the head (12) of the rail is immediately adjacent the base plate (11). Then, mould side pieces (13, 14) are secured to the base plate (11) to run parallel to the side of the rail (10). Antislip material such as bauxite or granite chippings (21) are positioned in the mould so that they lie on the base plate (11), and then the liquid polymer is poured into the mould to fill the spaces (19, 20) and so encapsulate the rail (10). The polymer is poured into the mould, until its surface (22) covers the foot (23) of the rail. In this state, the polymer is allowed to cure, so that it solidifies, and once the side plates (13, 14) have been removed, the rail together with its polymer coating can be lifted from the base plate (11).Type: GrantFiled: June 18, 2001Date of Patent: March 12, 2002Assignees: Hyperlast Limited, ALH Rail Coatings LimitedInventor: Robert Paul Vennell
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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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Publication number: 20010052550Abstract: A rail track comprising at least two parallel rails supported by a non-compressible base body, wherein the base body is provided with a channel-like recess for receiving the rail such that the running surface of the head of the rail lies free, wherein the bottom of the channel-like recess is provided with a first layer of yielding material which extends under the bearing surface of the foot of the rail, and wherein the surface between the running surface and the bearing surface of the rail is covered with a second layer of yielding material, so that an improved vibration damping and sound reduction are obtained.Type: ApplicationFiled: January 3, 2000Publication date: December 20, 2001Applicant: RICHARD L. BYRNEInventor: MARCEL HENK ANDRE JANSSENS
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Patent number: 6325301Abstract: In a device for supporting a rail fastened to a sole-plate resting on an anti-vibration pad, the sole-plate is urged towards the supporting structure by at least one adjustable prestressing resilient device acting on the sole-plate so as to apply a defined prestressing force to the anti-vibration pad. Each prestressing resilient device includes a threaded bolt, an adjusting nut and a vertically acting spring assembly which comprises a first spring having a first stiffness, a second spring arranged round the first spring and having a second stiffness higher than said first stiffness, and a device for retaining said first and second springs in such a way that each of said springs is able to act independently from the other one.Type: GrantFiled: August 31, 2000Date of Patent: December 4, 2001Inventor: Patrick Vanhonacker
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Patent number: 6321657Abstract: A monorail transit system includes transit drive units for supporting a transit car body on a beam and propelling the body along the beam. Improvements to the transit system include a quiet steel rail with vibration isolation for the beam, a vehicle braking system using a fixed plat engaged with a steel rail to arrest motion of the drive unit, a beam stabilizing support structure comprising a column with an insert that extends into a hollow beam portion, a drive unit coupled to the transit car body so as to be able to rotate with respect to the body while the drive unit and transit car body are traversing a curve in the rail, a leveling system for automatically leveling the car body with respect to a loading platform and a mechanism for automatically tilting the car body in response to centrifugal forces and then leveling the body, an articulating car body for accommodating curved beams, and a mechanism for providing positive traction on an inclined steel rail.Type: GrantFiled: March 1, 1999Date of Patent: November 27, 2001Inventor: William E. Owen
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Patent number: 6296195Abstract: A rail arrangement includes a bullheaded rail having joint ties and a rail head, a rail bridge and a rail foot. There is a driving track made of concrete with an integrated joint, in which the rail is seated in connection with a substrate; as well as profiles made of elastomeric material. The profiles includes a base profile arranged below the foot of the rail and which has flanges on both sides which completely or partially grip around the foot of the rail. The base profile has a plurality of channels having a rhombic cross-sectional shape and extending in the longitudinal direction of the rail, which are arranged in the plane extending parallel with the underside of the foot of the rail. The channels at the edges of the base profile have a smaller cross sectional shape than the channels at the center area. There are two side profiles abutting the rail on both sides. One of the side profiles preferably has a tracking groove on the side of the wheel rim. There is also a joint tie coating.Type: GrantFiled: April 14, 2000Date of Patent: October 2, 2001Assignee: Phoenix AktiengesellschaftInventors: Helmuth Blank, Bernd Pahl
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Patent number: 6283383Abstract: The invention relates to a rail system (1) comprising a line of rails with fixations, cross ties (wood, concrete, etc.), an infrastructure (2) on which the cross ties are laid, as well as an elastomeric cross tie shoe, whose sidewall (7), which tapers upward, entirely or partially surrounds the cross tie, the inner sidewall being in the form of a flexible lip (9) sealingly laid against said cross tie (2); besides, between the bottom of the cross tie shoe (13) and the cross tie underside (2) is inserted an elastic intermediate layer (5). The rail system according to the invention (1) is characterized in that the sidewall (7) of the cross tie shoe (4) presents on its inner face (8) a pattern of ribs and grooves and that the elastic intermediate layer (5) is provided with extruded-like channels (6, 6′, 6″) located virtually in the same plane as that in which two geometries of alternating channels appear.Type: GrantFiled: February 11, 2000Date of Patent: September 4, 2001Assignee: Phoenix AktiengesellschaftInventors: Helmuth Blank, Bernd Pahl
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Patent number: 6270017Abstract: A method of making a polymer coated rail in which a rail to be coated (10) is positioned on a mould base (11) in an inverted manner, so that the head (12) of the rail is immediately adjacent the base plate (11). Then, mould side pieces (13, 14) are secured to the base plate (11) to run parallel to the side of the rail (10). Antislip material such as bauxite or granite chippings (21) are positioned in the mould so that they lie on the base plate (11), and then the liquid polymer is poured into the mould to fill the spaces (19, 20) and so encapsulate the rail (10). The polymer is poured into the mould, until its surface (22) covers the foot (23) of the rail. In this state, the polymer is allowed to cure, so that it solidifies, and once the side plates (13, 14) have been removed, the rail together with its polymer coating can be lifted from the base plate (11).Type: GrantFiled: April 14, 1999Date of Patent: August 7, 2001Assignee: ALH Rail Coatings LimitedInventor: Robert Paul Vennell
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Patent number: 6253872Abstract: A noise control device for tracks (1) comprising sound-absorbing slabs (3) mounted at the rails (2) of the track (1), the slabs being supported on the rails (2) via elastic sections (5) and self-supportingly bridging the space between the rails (2). To improve silencing of the slabs (3) it is provided for the slabs (3) to be comprised of particles (9) of porous lightweight building material, which are combined by a binder. The slabs (3) have an embedded reinforcement (11). Advantageously, also silencing cavity resonators (14) are formed in the slabs (3). A special embodiment provides for the space between the rails (2) of a track to be bridged by slab parts (3a, 3b) arranged in pairs which are supported on each other at their rims (26, 27) facing each other.Type: GrantFiled: November 24, 1998Date of Patent: July 3, 2001Assignee: Gmundner Fertigteile Gesellschaft m.b.H & Co., KGInventor: Bernhard Neumann
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Patent number: 6234401Abstract: Method and track when assembling rails and sleepers, the assembly being carried out with different degrees of resilient softness between rail and sleeper. The degrees of resilient softness are selected on the basis of a PN sequence.Type: GrantFiled: August 12, 1998Date of Patent: May 22, 2001Inventor: Thomas Lagö
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Patent number: 6170755Abstract: The invention relates to a profiled rail (1), especially for a railway track, with a reduced total radiated noise level when in use. In order to reduce the noise radiation level, at least one web side surface (31) is substantially concavely rounded without any salient points in the lower region (31′) between the transition edge (32) on the side of the rail patten (3) and the center of gravity axis (X) in the rail cross-section and/or the height (H) of the pattern is increased by comparison with a normally profiled rail having a corresponding total rail height A.Type: GrantFiled: January 7, 1998Date of Patent: January 9, 2001Assignee: Voest-Alpine Schienen GmbHInventor: Herbert-Adolf Schifferl
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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: 6045052Abstract: An easily installed rail tie mounting assembly has a railroad rail which is supported by an inventive rail seat disposed on and supported by a concrete rail support member. The inventive rail seat consists of a elastometric rail pad and a non-corrodible metal plate. The rail pad is configured with air channels which aid and the vibration absorbing properties of the pad, also the rail pad has positioning tabs to aid in the placement of the railroad rail. The metal plate has a polymer coating disposed on the bottom surfaces of said plate. The polymer coating facilitates installation and contributes to the abrasion resistant qualities of the rail tie mounting assembly.Type: GrantFiled: April 2, 1998Date of Patent: April 4, 2000Assignee: AirBoss of America Corp.Inventor: Viktor Besenschek
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Patent number: 6027034Abstract: A superstructure arrangement for a track comprising a rail fastened to a securing device such as a ribbed plate which is disposed above a concrete sleeper, with an intermediate layer extending between the sleeper and the securing device. The rigidity of the intermediate layer is variable and rated so that at the maximum permissible stress in the rail, caused by bending under wheel lead, the elastic property changes to substantially non-elastic.Type: GrantFiled: August 11, 1998Date of Patent: February 22, 2000Assignee: BWG Butzbacher Weichenbau GmbHInventors: Albrecht Demmig, Hans-Ulrich Dietze, Hubertus Hohne, Sebastian Benenowski