US20090050594A1 - Insert for rail car coupling - Google Patents
Insert for rail car coupling Download PDFInfo
- Publication number
- US20090050594A1 US20090050594A1 US12/190,628 US19062808A US2009050594A1 US 20090050594 A1 US20090050594 A1 US 20090050594A1 US 19062808 A US19062808 A US 19062808A US 2009050594 A1 US2009050594 A1 US 2009050594A1
- Authority
- US
- United States
- Prior art keywords
- insert
- outer layer
- layer comprises
- male connector
- clearance space
- 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.)
- Abandoned
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
- B61G9/00—Draw-gear
- B61G9/20—Details; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
- F16C11/0619—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints the female part comprising a blind socket receiving the male part
- F16C11/0623—Construction or details of the socket member
- F16C11/0628—Construction or details of the socket member with linings
- F16C11/0633—Construction or details of the socket member with linings the linings being made of plastics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/20—Sliding surface consisting mainly of plastics
- F16C33/201—Composition of the plastic
Definitions
- the present invention is generally directed to a railway car coupler and is more specifically directed to an insert for a railway car coupling apparatus.
- Some railway car couplers comprise a male connector on one car and a female connector on another car.
- the male connector comprises a ball stud.
- the ball on the ball stud is secured within a female coupler housing by two followers, one on the distal end of the ball stud (the rear follower) and one at the neck of the ball stud (the front follower).
- the followers define a socket within which the ball is secured to provide an articulated joint that couples the cars together.
- the followers may be equipped with metal inserts that reside in a clearance space between the ball and the followers. When fluid lubricant (such as grease) is injected into the joint, the inserts serve to reduce wear of the ball and the followers.
- fluid lubricant such as grease
- the present invention provides a shell-like insert comprising a low-friction polymeric material.
- this invention provides an insert for a coupler that comprises a male connector and a female connector.
- the female connector has surfaces that are configured to conform to the male connector and to provide a clearance space therebetween.
- the insert is configured to conform to the clearance space and comprises a low-friction polymeric material.
- this invention provides a coupler that comprises a male connector and a female connector that has surfaces configured to conform to the male connector and to provide a clearance space therebetween. There is an insert situated in the clearance space, the insert being made from a low-friction polymeric material.
- the invention provides a railway car assembly comprising a first railway car having a male connector and a second railway car having a female connector, the male connector and the female connector together comprising a coupler as described herein.
- the invention provides a method aspect by which a first railway car may be coupled to a second railway car.
- the first railway car comprises a male connector that comprises a ball stud and the second railway car comprises a female connector thereon.
- the method includes providing a rear follower and a front follower in the female connector, securing the ball of the ball stud in a socket defined by the rear follower and the front follower, and positioning an insert in the socket.
- the insert is situated between the ball and the rear follower and between the ball and the front follower and is made from a low-friction polymeric material.
- FIG. 1 is a schematic partly cross-sectional view of a coupler comprising an insert in accordance with a specific embodiment of the invention
- FIG. 2 is a schematic perspective view of a follower for a coupler for use with the present invention
- FIG. 3 is a partly cross-sectional elevation view of an insert configured for positioning between the follower of FIG. 2 and the ball of the coupler of FIG. 1 , according to one specific aspect of the invention
- FIG. 4 is a schematic perspective view of a follower for a coupler for use with the present invention.
- FIG. 5 is an elevation view of an insert configured for positioning between the follower of FIG. 4 and the ball of the coupler of FIG. 1 , according to one specific aspect of the invention.
- This invention provides an improvement to a male-female railway car coupler by providing an insert that resides in the clearance space between the male coupler and the female coupler.
- the insert is made from a polymeric material that has a low coefficient of friction and therefore provides a lubrication effect that protects the followers from wear and that facilitates movement of the male coupler in the female coupler.
- the insert is fabricated from hard, smooth, wear-resistant composite material (referred to herein as a “low friction” material) such as a filament wound composite or an epoxy-impregnated polytetrafluoroethylene (PTFE) and glass-fiber material.
- PTFE polytetrafluoroethylene
- the insert is configured to conform to the clearance space between the male coupler and the female coupler.
- the insert may be configured to have a shell-like configuration, with the concave interior surface sized to engage the surface of the ball of a ball stud and a convex exterior surface sized to engage the concave surface of a follower.
- the insert will have a predetermined thickness and inner and outer diameters that conform to the coupler.
- the insert will be configured to meet the size and shape criteria of a prior art insert for the coupler.
- the insert may be configured to engage only a portion of the socket.
- an insert may be configured to engage only the concave portion of one follower in a ball-and-socket coupler that comprises two or more followers.
- FIG. 1 illustrates one specific coupler with which the present invention may be used.
- the coupler 10 comprises a male connector 12 and a female connector 14 .
- the male connector 12 has a ball head 12 a and a neck 12 b.
- the female connector 14 includes a housing 15 within which a rear follower 16 and a front follower 18 are received.
- the rear follower 16 and the front follower 18 are configured to reside within the housing of the female connector 14 and to define a socket that retains the ball head 12 a therein, within which socket the ball head 12 a can pivot.
- the coupler 10 is configured so that the male connector 12 and the female connector 14 form an articulated joint.
- the rear follower 16 and the front follower 18 each comprise a concave surface that conforms substantially to the convex, substantially spherical surface of the ball head 12 a.
- the radius of curvature to which the rear follower 16 and the front follower 18 conform is sufficiently larger than the diameter of the ball head 12 a to provide a clearance space between them for an insert.
- the rear follower 16 may have a fully round concave surface 16 a formed therein, as indicted in FIG. 2 . Accordingly, the rear follower 16 may be positioned in the housing of the female connector 14 before the ball head 12 a of the male connector 12 is inserted therein.
- An insert 20 shown in FIG. 3 , is dimensioned and configured to substantially conform to the clearance provided between the ball head 12 a and the rear follower 16 . In use, the insert 20 is positioned between the ball head 12 a and the concave surface on the rear follower 16 before the male connector 12 is secured in the female connector 14 .
- the insert 20 may be mounted either in the rear follower 16 or on the ball head 12 a before the male connector 12 is secured in the female connector 14 , or the insert 20 may simply be positioned between the ball head 12 a and the rear follower 16 as the coupler is being assembled.
- the front follower 18 can be fitted over the neck 12 b.
- the front follower 18 is configured as a yoke that can fit over the neck 12 b of the male connector 12 , as indicated in FIG. 4 . Accordingly, the concave surface 18 a on the front follower 18 is slotted and, therefore, is not fully round.
- a second insert 22 depicted in FIG. 5 , may be configured to be disposed in the clearance space between the front follower 18 and the ball head 12 a.
- the insert 22 and the front follower 18 are positioned in the female connector 14 to form the socket that secures the ball head 12 a in the housing 15 .
- inserts 20 and 22 are made from a low-friction material as described herein.
- the insert may comprise a laminate that comprises two outer layers that define the surfaces of the laminate (the “surface layers”) and, optionally, one or more additional intermediate layers between the outer layers.
- a first outer layer that defines the concave surface optionally comprises PTFE.
- the PTFE layer may be about 0.01 to about 0.04 inch (in.) (about 0.25 to about 1 millimeter (mm)) thick, optionally about 0.012 to about 0.015 in. (about 0.3 to about 0.4 mm) thick.
- a second outer layer may comprise a fiber-reinforced epoxy compound or a rubber-containing paint.
- the intermediate layer comprises a matrix of bisphenol epoxy resin into which one or more particulates and/or fibers are mixed.
- the intermediate layer may comprise fumed silica and/or fiberglass fibers in an epoxy resin.
- the intermediate layer may contain PTFE.
- powdered PTFE may be mixed into the epoxy resin.
- the second outer layer may comprise a high-performance, carbon fiber-reinforced epoxy molding compound.
- the second outer layer may comprise a rubber-containing paint.
- the mixture of the intermediate layer is applied, in uncured form, onto the first outer layer, and the second outer layer may be applied in uncured form, onto the intermediate layer.
- the three layers are then pressed in a mold designed to conform the insert to the clearance space in the coupler.
- the laminate is then cured and may then be machined for better conformance to the coupler.
- the first outer layer comprise PTFE and the intermediate layer comprises a Bisphenol-A epichlorohydrin based epoxy resin (e.g., phenol, 4,4O-(1-methylethylidene) bis-polymer with (chloromethyl) oxirane) such as EPONTM 828 sold by Hexion Specialty Chemicals, Inc., filled with hydrophilic fumed silica having a surface area of 200 square meters per gram (m 2 /g). Unfilled, the epoxy resin of the intermediate layer may have tensile values greater than 10,000 psi (69 MPa) with modulus values greater than 400,000 psi (2750 MPa).
- a Bisphenol-A epichlorohydrin based epoxy resin e.g., phenol, 4,4O-(1-methylethylidene) bis-polymer with (chloromethyl) oxirane
- EPONTM 828 sold by Hexion Specialty Chemicals, Inc.
- the second outer layer comprises a high-performance, carbon fiber-reinforced epoxy molding compound such as LYTEXTM 4149 sold by Quantum Composites, Inc.
- a molding compound may have one or more of the characteristics set forth in the following table, when cured:
- the bisphenol epoxy of the intermediate layer is filled with fiberglass fibers instead of fumed silica.
- an outer layer may comprise an epoxy resin having PTFE mixed therein.
- resin is meant to include uncured resins and/or the cured products of those resins, unless the term is modified by “cured” or “uncured”.
- first,” “second,” and the like, herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.
- the terms “a” and “an” herein do not denote a limitation of quantity, but rather denote the presence of at least one of the referenced item.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
Description
- This application claims the benefit of U.S. provisional application No. 60/965,683 filed Aug. 20, 2007, the contents of which are incorporated herein by reference in their entirety.
- The present invention is generally directed to a railway car coupler and is more specifically directed to an insert for a railway car coupling apparatus.
- Some railway car couplers comprise a male connector on one car and a female connector on another car. In a particular type of coupler, the male connector comprises a ball stud. The ball on the ball stud is secured within a female coupler housing by two followers, one on the distal end of the ball stud (the rear follower) and one at the neck of the ball stud (the front follower). The followers define a socket within which the ball is secured to provide an articulated joint that couples the cars together. The followers may be equipped with metal inserts that reside in a clearance space between the ball and the followers. When fluid lubricant (such as grease) is injected into the joint, the inserts serve to reduce wear of the ball and the followers. However, such lubrication efforts add to the maintenance burden of maintaining the coupler and, if overlooked, lead to severe wear in the coupler.
- Based on the foregoing, it is the general object of this invention to provide an improvement over prior art rail car couplers.
- In one aspect, the present invention provides a shell-like insert comprising a low-friction polymeric material.
- In another aspect, this invention provides an insert for a coupler that comprises a male connector and a female connector. The female connector has surfaces that are configured to conform to the male connector and to provide a clearance space therebetween. The insert is configured to conform to the clearance space and comprises a low-friction polymeric material.
- In still another aspect, this invention provides a coupler that comprises a male connector and a female connector that has surfaces configured to conform to the male connector and to provide a clearance space therebetween. There is an insert situated in the clearance space, the insert being made from a low-friction polymeric material.
- According to another embodiment, the invention provides a railway car assembly comprising a first railway car having a male connector and a second railway car having a female connector, the male connector and the female connector together comprising a coupler as described herein.
- The invention provides a method aspect by which a first railway car may be coupled to a second railway car. The first railway car comprises a male connector that comprises a ball stud and the second railway car comprises a female connector thereon. The method includes providing a rear follower and a front follower in the female connector, securing the ball of the ball stud in a socket defined by the rear follower and the front follower, and positioning an insert in the socket. The insert is situated between the ball and the rear follower and between the ball and the front follower and is made from a low-friction polymeric material.
-
FIG. 1 is a schematic partly cross-sectional view of a coupler comprising an insert in accordance with a specific embodiment of the invention; -
FIG. 2 is a schematic perspective view of a follower for a coupler for use with the present invention; -
FIG. 3 is a partly cross-sectional elevation view of an insert configured for positioning between the follower ofFIG. 2 and the ball of the coupler ofFIG. 1 , according to one specific aspect of the invention; -
FIG. 4 is a schematic perspective view of a follower for a coupler for use with the present invention; and -
FIG. 5 is an elevation view of an insert configured for positioning between the follower ofFIG. 4 and the ball of the coupler ofFIG. 1 , according to one specific aspect of the invention. - This invention provides an improvement to a male-female railway car coupler by providing an insert that resides in the clearance space between the male coupler and the female coupler. The insert is made from a polymeric material that has a low coefficient of friction and therefore provides a lubrication effect that protects the followers from wear and that facilitates movement of the male coupler in the female coupler. The insert is fabricated from hard, smooth, wear-resistant composite material (referred to herein as a “low friction” material) such as a filament wound composite or an epoxy-impregnated polytetrafluoroethylene (PTFE) and glass-fiber material. The insert lasts longer than a prior art injection of grease into a prior art coupling and is easily removable from the coupler, and is easily replaceable. Therefore, the insert reduces or eliminates the need to inject fluid lubricant into the coupler joint, and thus reduces the maintenance task requirements for the railway cars.
- The insert is configured to conform to the clearance space between the male coupler and the female coupler. Thus, the insert may be configured to have a shell-like configuration, with the concave interior surface sized to engage the surface of the ball of a ball stud and a convex exterior surface sized to engage the concave surface of a follower. Accordingly, the insert will have a predetermined thickness and inner and outer diameters that conform to the coupler. Optionally, the insert will be configured to meet the size and shape criteria of a prior art insert for the coupler. The insert may be configured to engage only a portion of the socket. For example, an insert may be configured to engage only the concave portion of one follower in a ball-and-socket coupler that comprises two or more followers.
-
FIG. 1 illustrates one specific coupler with which the present invention may be used. Thecoupler 10 comprises amale connector 12 and afemale connector 14. Themale connector 12 has aball head 12 a and aneck 12 b. Thefemale connector 14 includes ahousing 15 within which arear follower 16 and afront follower 18 are received. Therear follower 16 and thefront follower 18 are configured to reside within the housing of thefemale connector 14 and to define a socket that retains theball head 12 a therein, within which socket theball head 12 a can pivot. Thecoupler 10 is configured so that themale connector 12 and thefemale connector 14 form an articulated joint. In this embodiment, therear follower 16 and thefront follower 18 each comprise a concave surface that conforms substantially to the convex, substantially spherical surface of theball head 12 a. However, the radius of curvature to which therear follower 16 and thefront follower 18 conform is sufficiently larger than the diameter of theball head 12 a to provide a clearance space between them for an insert. - The
rear follower 16 may have a fully roundconcave surface 16 a formed therein, as indicted inFIG. 2 . Accordingly, therear follower 16 may be positioned in the housing of thefemale connector 14 before theball head 12 a of themale connector 12 is inserted therein. Aninsert 20, shown inFIG. 3 , is dimensioned and configured to substantially conform to the clearance provided between theball head 12 a and therear follower 16. In use, theinsert 20 is positioned between theball head 12 a and the concave surface on therear follower 16 before themale connector 12 is secured in thefemale connector 14. Optionally, theinsert 20 may be mounted either in therear follower 16 or on theball head 12 a before themale connector 12 is secured in thefemale connector 14, or theinsert 20 may simply be positioned between theball head 12 a and therear follower 16 as the coupler is being assembled. - After the
ball head 12 a is inserted into thefemale connector 14, thefront follower 18 can be fitted over theneck 12 b. Thefront follower 18 is configured as a yoke that can fit over theneck 12 b of themale connector 12, as indicated inFIG. 4 . Accordingly, theconcave surface 18 a on thefront follower 18 is slotted and, therefore, is not fully round. Asecond insert 22, depicted inFIG. 5 , may be configured to be disposed in the clearance space between thefront follower 18 and theball head 12 a. - After the
rear follower 16 andinsert 20 are positioned in thehousing 15 and theball head 12 a is advanced into thefemale connector 14, theinsert 22 and thefront follower 18 are positioned in thefemale connector 14 to form the socket that secures theball head 12 a in thehousing 15. - One or both of
inserts - In various embodiments, the insert may comprise a laminate that comprises two outer layers that define the surfaces of the laminate (the “surface layers”) and, optionally, one or more additional intermediate layers between the outer layers.
- A first outer layer that defines the concave surface (that that bears directly on the male coupler) optionally comprises PTFE. The PTFE layer may be about 0.01 to about 0.04 inch (in.) (about 0.25 to about 1 millimeter (mm)) thick, optionally about 0.012 to about 0.015 in. (about 0.3 to about 0.4 mm) thick. A second outer layer may comprise a fiber-reinforced epoxy compound or a rubber-containing paint.
- In one three-layer embodiment, there is an intermediate layer adjacent to the first outer layer, and the second outer layer is adjacent to the intermediate layer. The intermediate layer comprises a matrix of bisphenol epoxy resin into which one or more particulates and/or fibers are mixed. For example, the intermediate layer may comprise fumed silica and/or fiberglass fibers in an epoxy resin. Optionally, the intermediate layer may contain PTFE. For example, powdered PTFE may be mixed into the epoxy resin. The second outer layer may comprise a high-performance, carbon fiber-reinforced epoxy molding compound.
- In an alternative three-layer embodiment, the second outer layer may comprise a rubber-containing paint.
- To produce the insert, the mixture of the intermediate layer is applied, in uncured form, onto the first outer layer, and the second outer layer may be applied in uncured form, onto the intermediate layer. The three layers are then pressed in a mold designed to conform the insert to the clearance space in the coupler. The laminate is then cured and may then be machined for better conformance to the coupler.
- In one specific three-layer embodiment, the first outer layer comprise PTFE and the intermediate layer comprises a Bisphenol-A epichlorohydrin based epoxy resin (e.g., phenol, 4,4O-(1-methylethylidene) bis-polymer with (chloromethyl) oxirane) such as EPON™ 828 sold by Hexion Specialty Chemicals, Inc., filled with hydrophilic fumed silica having a surface area of 200 square meters per gram (m2/g). Unfilled, the epoxy resin of the intermediate layer may have tensile values greater than 10,000 psi (69 MPa) with modulus values greater than 400,000 psi (2750 MPa).
- The second outer layer comprises a high-performance, carbon fiber-reinforced epoxy molding compound such as LYTEX™ 4149 sold by Quantum Composites, Inc. Such a molding compound may have one or more of the characteristics set forth in the following table, when cured:
-
TABLE Test Procedure Value Specific Gravity ASTM D-792 1.45 Shrinkage, inch/inch (mm/mm) ASTM D-955 0.000 (0.000) Flexural Strength, psi (MPa)1 ASTM D-790 89,000 (613) Flexural Modulus, psi (GPa)1 ASTM D-790 5.0 × 106 (34.5) Tensile Strength, psi (MPa)1 ASTM D-638 42,000 (289) Tensile Modulus, psi (GPa)1 ASTM D-638 8.0 × 106 (55.1) Ultimate Elongation, % ASTM D-638 0.487 Izod Impact, notched, ft.lb/in. (J/m) ASTM D-256 18 (960) Compression Strength, psi (MPa)1 ASTM D-695 40,000 (275 Compression Modulus, psi (GPa)1 ASTM D-695 4.6 × 106 (31.7) Shear Strength, in-plane, psi (MPa)1 ASTM D-5379 30,000 (206) Shear Modulus, in-plane, psi (GPa)1 ASTM D-5379 1.6 × 106 (11) Shear Strength, interlaminar, psi (MPa)1 ASTM D-5379 9,500 (65.5) Shear Modulus, interlaminar, psi (GPa)1 ASTM D-5379 0.42 × 106 (2.9) Coefficient of Thermal Expansion TMA 2 × 10−6/° F. Heat Deflection Temperature @ 264 psi stress, ° F. ASTM D-648 >575° F. (300° C.) (° C.) Continuous Use Temperature (1000 hrs.) 350° F. (175° C.) Thermal Conductivity, Watts/M ° K 0.474 - In an alternative specific embodiment, the bisphenol epoxy of the intermediate layer is filled with fiberglass fibers instead of fumed silica.
- In still another alternative embodiment, an outer layer may comprise an epoxy resin having PTFE mixed therein.
- The term “resin” is meant to include uncured resins and/or the cured products of those resins, unless the term is modified by “cured” or “uncured”. The terms “first,” “second,” and the like, herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. In addition, the terms “a” and “an” herein do not denote a limitation of quantity, but rather denote the presence of at least one of the referenced item.
- Although the invention has been described with reference to particular embodiments thereof, it will be understood by one of ordinary skill in the art, upon a reading and understanding of the foregoing disclosure, that numerous variations and alterations to the disclosed embodiments will fall within the spirit and scope of this invention and of the appended claims.
Claims (24)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/190,628 US20090050594A1 (en) | 2007-08-20 | 2008-08-13 | Insert for rail car coupling |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US96568307P | 2007-08-20 | 2007-08-20 | |
US12/190,628 US20090050594A1 (en) | 2007-08-20 | 2008-08-13 | Insert for rail car coupling |
Publications (1)
Publication Number | Publication Date |
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US20090050594A1 true US20090050594A1 (en) | 2009-02-26 |
Family
ID=39916284
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US12/190,628 Abandoned US20090050594A1 (en) | 2007-08-20 | 2008-08-13 | Insert for rail car coupling |
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US (1) | US20090050594A1 (en) |
WO (1) | WO2009026081A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120113304A1 (en) * | 2010-11-05 | 2012-05-10 | Chen hao-min | Color filter of back side illumination image sensor and method for fabricating the same |
US20160333923A1 (en) * | 2014-01-16 | 2016-11-17 | Corebon Ab | Kinematic pairs |
US9701323B2 (en) | 2015-04-06 | 2017-07-11 | Bedloe Industries Llc | Railcar coupler |
CN109611444A (en) * | 2019-01-07 | 2019-04-12 | 南京华群光电技术有限公司 | A kind of split type universal type vibration reduction and cushioning attachment device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102909809B (en) * | 2011-08-02 | 2015-09-30 | 浙江兆山机床有限公司 | Rail glue |
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US3236573A (en) * | 1963-04-05 | 1966-02-22 | American Metal Prod | Low friction greaseless bearings |
US4084863A (en) * | 1974-01-25 | 1978-04-18 | Sargent Industries, Inc. | Bearing and bearing liner having a compliant layer |
US6176379B1 (en) * | 1999-01-29 | 2001-01-23 | Westinghouse Air Brake Company | Ball and race assembly including a one piece race member integrally formed with the ball |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0969217A3 (en) * | 1998-06-05 | 2001-03-14 | Rexnord Corporation | Composite spherical bearing and method of producing same |
-
2008
- 2008-08-13 US US12/190,628 patent/US20090050594A1/en not_active Abandoned
- 2008-08-14 WO PCT/US2008/073088 patent/WO2009026081A1/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3236573A (en) * | 1963-04-05 | 1966-02-22 | American Metal Prod | Low friction greaseless bearings |
US4084863A (en) * | 1974-01-25 | 1978-04-18 | Sargent Industries, Inc. | Bearing and bearing liner having a compliant layer |
US6176379B1 (en) * | 1999-01-29 | 2001-01-23 | Westinghouse Air Brake Company | Ball and race assembly including a one piece race member integrally formed with the ball |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120113304A1 (en) * | 2010-11-05 | 2012-05-10 | Chen hao-min | Color filter of back side illumination image sensor and method for fabricating the same |
US9559137B2 (en) * | 2010-11-05 | 2017-01-31 | Visera Technologies Company Limited | Color filter of illumination image sensor and method for fabricating the same |
US20160333923A1 (en) * | 2014-01-16 | 2016-11-17 | Corebon Ab | Kinematic pairs |
US10584738B2 (en) * | 2014-01-16 | 2020-03-10 | Corebon Ab | Kinematic pairs |
US9701323B2 (en) | 2015-04-06 | 2017-07-11 | Bedloe Industries Llc | Railcar coupler |
US10532753B2 (en) | 2015-04-06 | 2020-01-14 | Bedloe Industries Llc | Railcar coupler |
CN109611444A (en) * | 2019-01-07 | 2019-04-12 | 南京华群光电技术有限公司 | A kind of split type universal type vibration reduction and cushioning attachment device |
Also Published As
Publication number | Publication date |
---|---|
WO2009026081A1 (en) | 2009-02-26 |
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