US3910655A - Constant contact side bearing - Google Patents

Constant contact side bearing Download PDF

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Publication number
US3910655A
US3910655A US456540A US45654074A US3910655A US 3910655 A US3910655 A US 3910655A US 456540 A US456540 A US 456540A US 45654074 A US45654074 A US 45654074A US 3910655 A US3910655 A US 3910655A
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US
United States
Prior art keywords
block
side bearing
housing
set forth
cap
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US456540A
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English (en)
Inventor
Donald Willison
Hans B Weber
Joseph S Deucher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Midland Ross Corp
National Casting Inc
Original Assignee
Midland Ross Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Midland Ross Corp filed Critical Midland Ross Corp
Priority to US456540A priority Critical patent/US3910655A/en
Priority to CA222,439A priority patent/CA1026407A/en
Priority to IN604/CAL/75A priority patent/IN144186B/en
Priority to ZA00751915A priority patent/ZA751915B/xx
Priority to AU79517/75A priority patent/AU492387B2/en
Priority to AR258185A priority patent/AR210075A1/es
Priority to BR2385/75A priority patent/BR7501871A/pt
Priority to GB1333575A priority patent/GB1472009A/en
Priority to JP3968375A priority patent/JPS5345563B2/ja
Priority to GB4804575A priority patent/GB1472010A/en
Application granted granted Critical
Publication of US3910655A publication Critical patent/US3910655A/en
Assigned to CONGRESS FINANCIAL CORPORATION reassignment CONGRESS FINANCIAL CORPORATION SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NATIONAL CASTINGS INC., A DE CORP.
Assigned to NATIONAL CASTINGS INC., A CORP. OF DE reassignment NATIONAL CASTINGS INC., A CORP. OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: NATIONAL CASTINGS INC., A CORP. OF IL
Assigned to NATIONAL CASTINGS INC. A CORP. OF DE reassignment NATIONAL CASTINGS INC. A CORP. OF DE RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: CONGRESS FINANCIAL CORPORATION (CENTRAL)
Assigned to FIRST NATIONAL BANK OF CHICAGO, THE reassignment FIRST NATIONAL BANK OF CHICAGO, THE SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NATIONAL CASTINGS INC.
Assigned to NATIONAL CASTINGS INC., A CORP. OF IL reassignment NATIONAL CASTINGS INC., A CORP. OF IL CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: SHER ACQUISITION CO.
Assigned to NATIONAL CASTINGS CORPORATION, A CORP. OF DE reassignment NATIONAL CASTINGS CORPORATION, A CORP. OF DE MERGER (SEE DOCUMENT FOR DETAILS). Assignors: NATIONAL CASTINGS CORPORATION (MERGED INTO), NATIONAL CASTINGS INC.
Anticipated expiration legal-status Critical
Assigned to NATIONAL CASTINGS, INC. reassignment NATIONAL CASTINGS, INC. RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: FIRST NATIONAL BANK OF CHICAGO, THE
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/02—Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies
    • B61F5/14—Side bearings
    • B61F5/142—Side bearings made of rubber elements, graphite or the like

Definitions

  • ABSTRACT A constant contact railway vehicle side bearing utilizes an elastomeric block received within a housing and has a cap member supported on the block and in- [52 U.S. (:1 308/138; 105/199 CB terleeked therewith to Prevent displacement or p 51 Int. c1.
  • the invention relates to a sidebearing that is interposed between the bolster of a railway car truck and a tioned side bearings a car truck with worn wheels will begin to hunt as the truck approaches a critical speed of travel. At the critical speed the hunting of the truck may become so violent as to cause the truck to derail.
  • the present invention is directed to an improved resilient side bearing for railway vehicles and more particularly to the type which remains in constant contact with the car truck bolster and the car body bolster.
  • the bearing comprises a box-like housing mounted on the car truck bolster, an elastomeric block of suitable hardness carried within the housing and a cap supported on the block and interlocked therewith, the cap being in constant engagement with the underside of the body bolster.
  • the block is placed under a predetermined amount of initial compression when the bearing is applied to a railway car so that for small swivelling movements of the truck the cap is stationary relative to the body bolster and truck movement is resisted by horizontal deflection of the block, whereas larger angling movement is resisted by the sliding of the cap relative to the-body bolster.
  • This resistance to swivelling of the truck opposes its tendency to hunt as the car approaches a speed which would be critical if the truck were equipped with roller type side bearings.
  • this control of hunting by the improved side bearing has the effect of increasing the speed at which hunting may become critical, thus permitting safe operation of trains at higher speeds than is possible with plain friction or roller type side bearings.
  • a more specific object is to provide a side bearing having a box-like housing, an elastomeric block within the housing, and a cap member supported on the block, the cap member and block being interlocked together against separation in service.
  • Another object isyto provide an improved side bearing of the constant contact type employing an elastomeric block as the cushioning medium and which embodies means for protecting theblock against oversolid compressive forces.
  • a still further object is to provide a novel resilient side bearing which can utilize existing side bearing housings to make possible an efficient as well as economical device.
  • FIG. 1 is a plan view of a railway car truck having side bearings constructed in accordance with the present invention.
  • FIG. 2 is a fragmentary elevational view partly in section showing a pair of side bearings embodying the invention installed between a car truck bolster and a car body bolster.
  • FIG. 3 is a side elevational view of a side bearing embodying the invention, the bearing being shown in free or uncompressed condition.
  • FIG. 4 is a vertical longitudinal sectional view of the side bearing shown in FIG. 3, the left half showing the position of the parts at the free height of the bearing and the right half showing the assembled height of the bearing after it has been installed in a railway car.
  • FIG. 5 is a plan view partly in horizontal section taken along line 55 of the side bearing shown in FIG. 3.
  • FIG. 6 is an end view of the side bearing.
  • FIG. 7 is a transverse sectional view taken along line 77 of FIG. 5, the elastomeric block being shown in end elevation.
  • FIG. 8 is an end view of the side bearing cap.
  • FIG. 9 is an end view of the elastomeric block.
  • FIG. l0- is a side elevation of the side bearing cap.
  • FIG. 11 is a side elevation of the elastomeric block.
  • FIG. 12 is a bottom plan view of the side bearing cap.
  • FIG. 13 is a top plan view of the elastomeric block.
  • FIG. 14 is a ,view similar to FIG. 7 but showing, the elastomeric block compressed to the extent that the side bearing cap is in engagement with the top of the side bearing housing.
  • FIGS. 1 and 2 of the drawing there is shown a car truck of conventional design comprising aside frame 10, a bolster l2 and a pair of wheel axles 14. It will be understood that another identical side frame 10 (not shown) is disposed at the right hand side of FIG. 1 and is connected to the bolster and wheel axles in the same manner as the side frame shown.
  • the bolster 12 is resiliently supported on the central portion 16 of the side frame by means of springs 18. Pivotally mounted on truck bolster 12 by means of the usual center bearing 20 is the car body bolster 22 (FIG. .2) to permit swivelling of the truck relative to the car body.
  • each side bearing is located between center plate 20 and side frame 10 and is in engagement with the underside of a rigid bearing member 26 secured to the underside of body bolster 22. Constant contact occurs between each side bearing 24 and member 26 so that a predetermined amount of frictional resistance created thereby serves to oppose swivelling or angling of the truck, as will be hereinafter set forth.
  • Side bearing 24 comprises an elongated box-like casing or housing 30 having a flat base 32 and a pair of vertical side walls 34 joined to the base.
  • the ends of walls 34 are turned inward to form transverse end wall portions 36.
  • the opposing inner ends of wall portions 36 are spaced apart to form an opening 38 at each end of the housing.
  • a hole 40 for receiving suitable means such as a rivet or bolt for securing the housing to the truck bolster.
  • Housing 30 is of a type presently in common use with roller side bearings.
  • This housing base 32 has a concavely curved top surface 32a on which the roller of such a side bearing rolls. While housing 30 itself is old in the art, its ready availability on railway cars now in service makes it highly economical to use in conjunction with the present invention.
  • Block 50 within housing 30 and supported on base 32 is block which may be made of elastomeric material such as rubber or polyurethane and which is of suitable hardness and resiliency to provide the necessary loaddeflection characteristics.
  • Block 50 in its uncompressed state is of generally trapezoidal configuration 1 in both longitudinal and transverse vertical cross section. In its uncompressed or free condition (FIGS. 9 and l l) the block has a flat bottom surface 50a. Its longitudinal side surfaces 50b and end surfaces 500 slant inwardly from the base to the top so that the upper end of the block is of smaller area than the base. At its midpoint the top side of the block is relieved across its en tire width in the form of a V-shaped recess 50r.
  • a follower or cap member having a horizontal top wall 61 which at its midpoint has a transversely extending depending ridge-like projection 62 for positioning the member lengthwise of the block.
  • Projection 62 has a pair of downwardly converging surfaces 62r which have the same slope as the V- shaped surfaces of recess 50r and are adapted to engage therewith to position the cap member relative to the block.
  • Projection 62 has a flat underside 62f that extends between the lower extremities of surfaces 62r.
  • At the end of the cap member are depending legs 64 which are T-shaped in horizontal cross section and extend into housing 30.
  • the opposing inner faces 64a of legs 64 converge in a direction upwardly of the cap for a purpose which will be hereinafter explained.
  • a substantial clearance between legs 64 and the adjacent walls of the housing is provided as at 66 in a lengthwise direction and as at 68a and 68b in a transverse direction. This clearance is to avoid engagement between the cap and the opposing inner vertical surfaces 34a, 36a, and 36b of the housing as the cap moves relative to the housing in service in response to swivelling of the truck.
  • the cap is formed with longitudinal side flanges 70 depending from top wall 61, which flanges merge with projection 62 and legs 64 to provide a pair of recesses 72 on the underside of the cap for receiving the upper end of the block.
  • flanges 70 are coplanar with underside 62f of projection 62.
  • a pocket portion 74 formed by a transverse wall portion 74a which commences at line f on leg inner side 64a and slants upwardly toward the adjacent end of the cap and is joined with the underside of top wall 61 by a concavely rounded portion 74b.
  • Wall portion 74a provides an abutment or shoulder for use in interlocking the cap with block 50, as will be hereinafter described.
  • each upper edge of block 50 is an ear or lug 76 which projects outwardly of end surface 500 and has its top side disposed flush with the top surface of the block.
  • Lug 76 is of such configuration that when cap 60 is in assembled relation with the block, each lug is within pocket 74, with its underside 76a in engagement with shoulder 74a to interlock the cap to the block against separation therefrom. It will be observed that each upper end 80 of the block is contoured to fit snugly within recess 72 as seen in FIGS. 3 and 4 to complete the interlock between the cap and block.
  • Block 50 is also provided with ears or positioning lugs 82 projecting outwardly from the lower ends thereof.
  • Lugs 82 are so contoured as to position the block within the housing in a direction lengthwise thereof through engagement with the heads of securement means such as rivets 84 or other fasteners used to secure the housing to the bolster.
  • securemenet means 86 commercially known as a Huck fastener, has been shown. In this manner the block is properly positioned lengthwise of the housing and is also held against displacement longitudinally thereof.
  • Assembling of the cap and block is accomplished by positioning the cap over the block in sloped relation thereto so that one of lugs 76 is received within pocket 74 after which the other end of the cap is lowered onto the block so that sloped surface 64a of leg 64 bears against the other of lugs 76 on the block.
  • a downward force is next applied against the last mentioned end of the cap whereby the wedging action of surface 64a forces lug 76 inwardly of the block and along surface 64a.
  • the wedging action continues as the lug reaches recess 72, after which the internal stresses which have been imparted to the block are released and the lug is forced into pocket 74 to interlock the cap with the block against detachment therefrom in both vertical and horizontal directions.
  • the interlocked cap and block may be readily applied to housing 24 to complete the side bearing assembly.
  • Distance y is preferably less than distance x so that, as the car body rocks in service, cap 60 will always remain in contact with bearing member 26 on the body bolster. It will be observed from the right half of FIG. 4 that the end surface 500 has bulged outwardly, its upper portion being in contact with surface 64a. This partial restriction of expansion of the block 50 by the 1 cap provide a force-deflection characteristic such that a rapid increase in compressive load force occurs as the block is compressed further from the FIG..4 position.
  • sides 50b of block 50 are convexly bulged v as in FIGS. 6 and 7 but very little engagement, if any, will occur between sides 50b and the adjacenthousing walls 34.
  • FIG. 9 which shows block 50 in its uncompressed or free state
  • the base of the block is formed with outwardly projecting toe portions 51 along its lower longitudinal edges.
  • Toe portions 51 are for the purpose of positioning and holding the block transversely within housing 24 through engagement with inner surfaces 34a of side walls 34.
  • cap 60 will contact the housing as shown and the bearing will function in the same manner as a conventional friction type side bearing. In such case a clearance will exist between the top face of the cap and body bolster bearing 26, when the body bolster is horizontal relative to the truck bolster.
  • the functioning of the side bearing in service is such that dual control of the swivelling or hunting of a car truck relative to its car body is provided.
  • Small angling movements of the truck are controlled by the deflection of block 50 horizontally in shear caused by relative movement between cap 60 and housing 24, while larger angling movements are resisted by the sliding action of cap 60 relative to body bolster bearing member 26.
  • the static frictional force existing between cap 60 and member 26 is greater than the resistance of the block to horizontal deflection in shear for a small degree of swivelling of the truck and therefore no relative movement occurs between cap 60 and member 26 during such swivelling of the truck.
  • cap 60 in its assembled position with block 50 is in tight fitting engagement therewith.
  • a resilient side bearing for railway vehicles comprising a housing having a base with sidewalls extending upwardly therefrom, a block member of resilient material in said'housing and supported on said base, a cap member positioned on said block member for transmitting vertical loads thereto, said cap and block members having interlocking lugand pocket means for securing said cap member to said block member against detachment therefrom in vertical and horizontal directions, and means on said cap member adapted for wedging engagement with said block member, during securement of the members, to deform said block member whereby said lug and pocket means are forced into interlocking engagement.
  • said interlocking means comprises a pair of integral lugs on one of said members and pockets for receiving said lugs on the other of said members.
  • said interlocking means comprises a pair of lugs on said block member and pockets in said cap member for receiving said lugs.
  • said block member has a V-shaped central groove extending transversely across its top and said cap member has a depending projection received in said groove, said projection having faces sloped complementary to the surface in said groove and being in engagement therewith.
  • a resilient side bearing as set forth in claim 2 in which said block member has outwardly projecting lugs at lower ends thereof adapted for engagement with associated securement means in said housing for positioning the block member longitudinally of the housing.
  • a resilient side bearing as set forth in claim 1 in which said cap member has depending legs which extend into said housing, and has sufficient clearance between said legs and the adjacent sidewalls of the housing to allow a predetermined amount of horizontal movement of the cap member with respect to the hous- 9.
  • a resilient side bearing as set forth in claim 8 in which said legs have sloping surfaces engaging portions of the opposed end surfaces of said block member to partially confine the block member against end-wise expansion.
  • a block of resilient material adapted for supporting a cap member of a railway side bearing, said block comprising horizontal base and top portions, end surfaces of the block converging in a direction upwardly from said base portion, said top portion having a V- shaped central groove extending thereacross for engagement with a depending projection on an associated cap member for positioning the cap member lengthwise of the block, and a projecting lug at each end of the block adjacent said top portion adapted for interlocking engagement with a pocket in an associated cap member.
  • a resilient side bearing for application between a railway car truck bolster and a car body bolster, said side bearing being compressed to an assembled height when interposed between said truck bolster and body bolster, said side bearing comprising a housing having a base with sidewalls extending upwardly therefrom, a block of resilient material in said housing and supported on said base, said block being held against horizontal displacement relative to said base, a cap member positioned on said block member and movable vertically relative to said base for transmitting vertical loads from said body bolster to the block, said cap and block members having interlocking lug and pocket means for securing said cap member to said block member against detachment therefrom in vertical and horizontal directions, said block member having a configuration such that the amount of vertical travel of said cap member from the free height of said side bearing to said assembled height is greater than the amount of vertical travel of said cap member from said assembled height to the fully compressed height of the side bearing.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Springs (AREA)
  • Vibration Prevention Devices (AREA)
  • Pivots And Pivotal Connections (AREA)
US456540A 1974-04-01 1974-04-01 Constant contact side bearing Expired - Lifetime US3910655A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US456540A US3910655A (en) 1974-04-01 1974-04-01 Constant contact side bearing
CA222,439A CA1026407A (en) 1974-04-01 1975-03-18 Constant contact side bearing
IN604/CAL/75A IN144186B (de) 1974-04-01 1975-03-25
ZA00751915A ZA751915B (en) 1974-04-01 1975-03-26 Constant contact side bearing
AU79517/75A AU492387B2 (en) 1975-03-26 Constant contact side bearing
BR2385/75A BR7501871A (pt) 1974-04-01 1975-03-31 Mancal lateral resiliente e bloco de material resiliente
AR258185A AR210075A1 (es) 1974-04-01 1975-03-31 Cojinete lateral elastico para el bogie de un vagon de ferrocarril
JP3968375A JPS5345563B2 (de) 1974-04-01 1975-04-01
GB1333575A GB1472009A (en) 1974-04-01 1975-04-01 Constant contact side bearing
GB4804575A GB1472010A (en) 1974-04-01 1975-04-01 Resilient block for a side bearing for a railway vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US456540A US3910655A (en) 1974-04-01 1974-04-01 Constant contact side bearing

Publications (1)

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US3910655A true US3910655A (en) 1975-10-07

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US456540A Expired - Lifetime US3910655A (en) 1974-04-01 1974-04-01 Constant contact side bearing

Country Status (8)

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US (1) US3910655A (de)
JP (1) JPS5345563B2 (de)
AR (1) AR210075A1 (de)
BR (1) BR7501871A (de)
CA (1) CA1026407A (de)
GB (2) GB1472009A (de)
IN (1) IN144186B (de)
ZA (1) ZA751915B (de)

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4567833A (en) * 1984-09-20 1986-02-04 Holland Company Composite constant contact side bearing for railroad cars
US4596194A (en) * 1985-02-08 1986-06-24 Paton H N Yaw damper for swivelable railcar trucks
US4637318A (en) * 1985-02-08 1987-01-20 Paton H N Swivelable single axle railcar truck and railcar
US4712487A (en) * 1985-05-28 1987-12-15 Miner Enterprises, Inc. Side bearing unit for railroad car, including method of making
AU584986B2 (en) * 1985-05-28 1989-06-08 Miner Enterprises Inc. Side bearing unit for railroad car
EP0341535A2 (de) * 1988-05-07 1989-11-15 Alcatel SEL Aktiengesellschaft Miniatur-Steckkupplung für Koaxialleitungen
US4924779A (en) * 1989-02-21 1990-05-15 Thrall Car Manufacturing Company Long-travel side bearing for an articulated railroad car
US5036774A (en) * 1989-02-21 1991-08-06 Thrall Car Manufacturing Company Long-travel side bearing for an articulated railroad car
US6092470A (en) * 1998-12-03 2000-07-25 Miner Enterprises, Inc. Railroad car side bearing with thermal insulator
US6644214B1 (en) * 2002-09-18 2003-11-11 Asf-Keystone, Inc. Constant contact side bearing
US6792871B2 (en) 2002-11-07 2004-09-21 Miner Enterprises, Inc. Railroad car energy absorption apparatus
US20050046096A1 (en) * 2003-01-21 2005-03-03 Salis Keith A. Elastomeric spring assembly for a railcar and method of making same
US20050183626A1 (en) * 2004-02-24 2005-08-25 O'donnell William P. Constant contact side bearing assembly for a railcar
US20050206065A1 (en) * 2003-12-22 2005-09-22 Xerox Corporation Clamp actuator system and method of use
US20070069435A1 (en) * 2005-09-27 2007-03-29 Aspengren Paul B Elastomeric spring
US20070149752A1 (en) * 2005-12-06 2007-06-28 Kennedy James S Railway freight car constant contact side bearing
US20080115690A1 (en) * 2006-11-16 2008-05-22 Mitchell Nathaniel L Constant contact side bearing assembly
US20080141896A1 (en) * 2006-12-15 2008-06-19 O'donnell William P Constant contact side bearing assembly for a railcar
US20090225526A1 (en) * 2007-08-22 2009-09-10 Teradyne, Inc. System and method for mounting shielded cables to printed circuit board assemblies
US9216450B2 (en) 2011-05-17 2015-12-22 Nevis Industries Llc Side frame and bolster for a railway truck and method for manufacturing same
US9233416B2 (en) 2011-05-17 2016-01-12 Nevis Industries Llc Side frame and bolster for a railway truck and method for manufacturing same
US9346098B2 (en) 2011-05-17 2016-05-24 Nevis Industries Llc Side frame and bolster for a railway truck and method for manufacturing same
US10358151B2 (en) 2013-12-30 2019-07-23 Nevis Industries Llc Railcar truck roller bearing adapter-pad systems
US10562547B2 (en) 2013-12-30 2020-02-18 Nevis Industries Llc Railcar truck roller bearing adapter pad systems
US10752265B2 (en) 2013-12-30 2020-08-25 Nevis Industries Llc Railcar truck roller bearing adapter pad systems
CN113015668A (zh) * 2018-09-04 2021-06-22 亚历山大·亚历山大罗维奇·安德烈夫 侧轴承
US11565728B2 (en) 2013-12-30 2023-01-31 Nevis Industries Llc Railcar truck roller bearing adapter-pad systems

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JP5514613B2 (ja) * 2010-04-06 2014-06-04 東洋ゴム工業株式会社 鉄道車両用ストッパ
RU198385U1 (ru) * 2019-09-16 2020-07-02 Компания Грейкросс Лимитед Колпак скользуна тележки грузового вагона

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US2363260A (en) * 1941-10-10 1944-11-21 American Steel & Wire Co Bearing for rope stranding machines
US2913288A (en) * 1957-01-03 1959-11-17 Symington Wayne Corp Resilient side bearings
US3712691A (en) * 1971-02-03 1973-01-23 Dresser Ind Elastomeric snubbing side bearing
US3762339A (en) * 1972-01-31 1973-10-02 Amsted Ind Inc Railway truck anti-rock side bearing device

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US2363260A (en) * 1941-10-10 1944-11-21 American Steel & Wire Co Bearing for rope stranding machines
US2913288A (en) * 1957-01-03 1959-11-17 Symington Wayne Corp Resilient side bearings
US3712691A (en) * 1971-02-03 1973-01-23 Dresser Ind Elastomeric snubbing side bearing
US3762339A (en) * 1972-01-31 1973-10-02 Amsted Ind Inc Railway truck anti-rock side bearing device

Cited By (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4567833A (en) * 1984-09-20 1986-02-04 Holland Company Composite constant contact side bearing for railroad cars
US4596194A (en) * 1985-02-08 1986-06-24 Paton H N Yaw damper for swivelable railcar trucks
EP0190752A2 (de) * 1985-02-08 1986-08-13 H. Neil Paton Gierdämpfer für schwenkbare Drehgestelle von Schienenfahrzeugen
US4637318A (en) * 1985-02-08 1987-01-20 Paton H N Swivelable single axle railcar truck and railcar
EP0190752A3 (en) * 1985-02-08 1987-06-16 H. Neil Paton Yaw damper for swivelable railcar trucks
US4712487A (en) * 1985-05-28 1987-12-15 Miner Enterprises, Inc. Side bearing unit for railroad car, including method of making
AU584986B2 (en) * 1985-05-28 1989-06-08 Miner Enterprises Inc. Side bearing unit for railroad car
EP0341535A2 (de) * 1988-05-07 1989-11-15 Alcatel SEL Aktiengesellschaft Miniatur-Steckkupplung für Koaxialleitungen
EP0341535A3 (en) * 1988-05-07 1990-11-14 Standard Elektrik Lorenz Aktiengesellschaft Miniature connection plug for coaxial cables
US4924779A (en) * 1989-02-21 1990-05-15 Thrall Car Manufacturing Company Long-travel side bearing for an articulated railroad car
US5036774A (en) * 1989-02-21 1991-08-06 Thrall Car Manufacturing Company Long-travel side bearing for an articulated railroad car
US6092470A (en) * 1998-12-03 2000-07-25 Miner Enterprises, Inc. Railroad car side bearing with thermal insulator
US6644214B1 (en) * 2002-09-18 2003-11-11 Asf-Keystone, Inc. Constant contact side bearing
CN100335327C (zh) * 2002-09-18 2007-09-05 阿姆斯泰德工业公司 常接触旁承
US6792871B2 (en) 2002-11-07 2004-09-21 Miner Enterprises, Inc. Railroad car energy absorption apparatus
US20050061196A1 (en) * 2002-11-07 2005-03-24 O'donnell William P. Railroad car energy absorption apparatus
USRE44177E1 (en) 2002-11-07 2013-04-30 Miner Enterprises, Inc. Railroad car energy absorption apparatus
CN101117121B (zh) * 2002-11-07 2012-05-23 采矿企业有限公司 铁路车能量吸收装置
CN100396526C (zh) * 2002-11-07 2008-06-25 采矿企业有限公司 铁路车能量吸收装置
US7044061B2 (en) * 2002-11-07 2006-05-16 Miner Enterprises, Inc. Railroad car energy absorption apparatus
US20050046096A1 (en) * 2003-01-21 2005-03-03 Salis Keith A. Elastomeric spring assembly for a railcar and method of making same
US6877623B2 (en) 2003-01-21 2005-04-12 Miner Enterprises, Inc. Elastomeric spring assembly for a railcar and method of making same
US7128312B2 (en) 2003-01-21 2006-10-31 Miner Enterprises, Inc. Elastomeric spring assembly for a railcar and method of making same
US20050206065A1 (en) * 2003-12-22 2005-09-22 Xerox Corporation Clamp actuator system and method of use
US7021617B2 (en) 2003-12-22 2006-04-04 Xerox Corporation Clamp actuator system and method of use
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Also Published As

Publication number Publication date
ZA751915B (en) 1976-02-25
BR7501871A (pt) 1976-01-06
AU7951775A (en) 1976-09-30
CA1026407A (en) 1978-02-14
AR210075A1 (es) 1977-06-30
JPS50149005A (de) 1975-11-28
JPS5345563B2 (de) 1978-12-07
IN144186B (de) 1978-04-01
GB1472010A (en) 1977-04-27
GB1472009A (en) 1977-04-27

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