US20140110368A1 - Coupler knuckle pin - Google Patents
Coupler knuckle pin Download PDFInfo
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- US20140110368A1 US20140110368A1 US13/659,509 US201213659509A US2014110368A1 US 20140110368 A1 US20140110368 A1 US 20140110368A1 US 201213659509 A US201213659509 A US 201213659509A US 2014110368 A1 US2014110368 A1 US 2014110368A1
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- Prior art keywords
- knuckle
- shaft
- pin
- coupler
- polymeric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
- B61G3/00—Couplings comprising mating parts of similar shape or form which can be coupled without the use of any additional element or elements
- B61G3/04—Couplings comprising mating parts of similar shape or form which can be coupled without the use of any additional element or elements with coupling head having a guard arm on one side and a knuckle with angularly-disposed nose and tail portions pivoted to the other side thereof, the nose of the knuckle being the coupling part, and means to lock the knuckle in coupling position, e.g. "A.A.R." or "Janney" type
Definitions
- This invention relates generally to railway car coupling systems, and more particularly to an improved polymeric knuckle pin.
- This invention is applicable to any type of coupler that uses a pin to pivotally secure the coupler and knuckle together.
- the knuckle pin pivotally connects a coupler and a knuckle on a railway car.
- Such railway knuckle pins are usually comprised of a metal or plastic material.
- Knuckle pins are shown in U.S. Pat. Nos. 5,145,076, 5,630,519, and 5,736,088.
- Prior known knuckle pins were made of either metal or plastic material. Metal pins are heavy, limiting the number of pins a maintenance worker can carry while checking the coupler-knuckle connection on the railroad cars. Metal pins are also very hard to maintain because they are susceptible to rust and corrosion.
- buff and draft movements cause the coupler-knuckle connection to exert stress, force, and impact on the knuckle pin.
- the high hardness of a metal pin may cause damage to the coupler or knuckle.
- the pin may bend and impede coupler-knuckle operation, and in rotator cars, if structurally compromised the pin may drop out and cause damage to the crushers.
- Prior known plastic knuckle pins alleviate some of the damages problems caused by the metal knuckle pins, however, the plastic pins were susceptible to defects caused during the formation process. It was not uncommon for plastic pins to contain air and moisture pockets, making the pins non-uniform in their material matrix. Other plastic pins contained spaced-apart annular relief areas in the shaft to improve the overall uniformity of the plastic material. However, these relief areas significantly compromise the structural integrity of the pin and create multiple stress concentration points causing the plastic pins to break easier.
- the present invention provides an improved, impact and stress absorbing knuckle pin that reduces fatigue in the coupler, knuckle, and knuckle pin.
- an improved railway car polymeric knuckle pin is provided for use in a railway car coupler assembly.
- the polymeric knuckle pin is comprised of a shaft, a head on one end of the shaft, and a locking mechanism on the end of the shaft opposite the head to secure the pin in position as a pivot point between a coupler and a knuckle connection on a railway car.
- the knuckle pin contains at least one groove in the shaft. The grove is strategically placed in an area on the shaft of the pin where the coupler-knuckle connection exerts impact, force, and stress on the pin.
- a single or plurality of elastomer rings is placed in the groove or grooves on the shaft.
- the elastomer rings in the groove provide cushion to the pin from the impact, force, and stress, allow the pin to avoid hard contact with the coupler and knuckle, distribute the loads exerted by the coupler and knuckle more evenly, realign the coupler and knuckle positions, and protect the pin itself from surface cuts and scratches.
- the elastomer rings on the shaft of the pin improve the life of both the coupler-knuckle assembly and the pin.
- a polymeric knuckle pin is comprised of a shaft, a head on one end of the shaft, and a locking mechanism on the other end of the shaft opposite the head.
- the shaft containing at least one groove at a point where the coupler-knuckle connection exerts force on the shaft of the pin.
- the groove or grooves contain a single elastomer ring or plurality of elastomer rings.
- the head of the pin is non-round shape.
- the shaft contains a center area between the head and the locking mechanism where the diameter of the shaft is smaller than the diameter of the rest of the shaft.
- FIG. 1 is a top perspective view of a coupler-knuckle assembly with the improved knuckle pin of the present invention in place;
- FIG. 2 is a front elevational view of the improved knuckle pin of the present invention
- FIG. 3 is a side elevational view of the improved knuckle pin of the present invention.
- FIG. 4 is a top plan view of the improved knuckle pin of the present invention.
- FIG. 5 is a bottom plan view of the improved knuckle pin of the present invention.
- FIG. 6 is side perspective view of a second embodiment of the improved knuckle pin of the present invention.
- FIG. 7 is a sectional view of the coupler-knuckle assembly along lines 7 - 7 of FIG. 1 .
- a coupler-knuckle assembly incorporating preferred embodiment the present invention is generally designated 10 and includes a coupler body 12 , a knuckle 14 , and a knuckle pin 16 .
- the knuckle 14 is pivotally connected to the coupler body 12 by the knuckle pin 16 .
- the coupler body 12 as shown, has its knuckle 14 in the closed position.
- the knuckle pin of the present invention generally indicated 16 , includes a shaft 32 with a center region 33 , a top end 35 , and a bottom end 42 .
- a knuckle-pin head 30 is on the top end 35 of the shaft 32
- a snap lock locking mechanism 36 is on the bottom end 42 of the shaft 32 .
- the knuckle pin of the present invention is preferably a solid piece of molded urethane or polyurethane as described below.
- the polymeric pin is lighter and more resilient, accepts bending fatigue better, and creates less friction as a pivot point between the coupler and knuckle improving performance of the coupler-knuckle assembly.
- the knuckle pin head 30 of the pin 16 has a dome-shaped top 31 , which is sized diametrically larger than the shaft 32 .
- the pin head 30 also has a significantly larger diameter than the pinhole in the coupler-knuckle assembly.
- An annular radius 34 is formed between the top end of the shaft 35 and the pin head 30 to protect against damage to the pin when installing the pin.
- the locking mechanism 36 is comprised of two snap lock tabs 37 and 39 .
- the snap lock tabs 37 and 39 are compressed together or towards each other as the pin is inserted into the coupler-knuckle assembly 10 and expand when the pin is fully inserted into the coupler-knuckle assembly.
- the snap lock tabs 37 and 39 secure the knuckle pin in the coupler-knuckle assembly, because once the pin is fully inserted into the assembly, the snap lock tabs expand or snap-out to greater diameter than the pinhole in the coupler body.
- a cotter pin or other suitable locking mechanisms can also be used.
- the shaft 32 is generally cylindrical in shape and includes at least one indented area, wherein the indented area is diametrically smaller than the shaft 32 .
- An upper indented area 38 and a lower indented area 38 B are located on the shaft 32 in the coupler-knuckle impact regions 112 and 113 (shown in FIG. 7 ), but the groove can extend beyond the coupler-knuckle impact regions 112 and 113 .
- One indented area 38 is located on shaft 32 where the shaft 32 contacts the coupler body 12 and knuckle 14 in the coupler-knuckle top impact region 112
- the other indented area 38 B is located on the shaft 32 where the shaft 32 contacts the coupler body 12 and knuckle 14 in the coupler-knuckle bottom impact region 113
- Elastomer rings 40 are located on the shaft 32 covering and filling some or all of the indented areas. In the areas of the shaft 32 where the indented areas and the elastomer rings 40 are located, the diameter of the indented area plus the rings 40 are the same as the diameter of the shaft 32 or slightly larger than the diameter of the shaft.
- the elastomer rings of the present invention are preferably made from thermal plastic polyurethane material, but the rings can be made from any material having a high elasticity and resiliency.
- the number of elastomer rings varies depending on the length of the indented area and the diameter of the rings, but preferably a plurality of elastomer rings are placed inside each indented area. Placement of the elastomer rings in the indented areas along the area where the coupler-knuckle connection exerts the greatest stress, force, and impact on the knuckle pin allows fatigue on both the coupler-knuckle assembly and the pin to be reduced.
- the elastomer rings deform elastically absorbing the force and stress from the coupler-knuckle connection and cushion any impact that occurs.
- the improved knuckle pin 16 is shown in a side elevational view.
- the knuckle pin 16 is completely symmetrical except for the locking mechanism 36 on the bottom end 42 of the shaft 32 .
- the two snap lock tabs 37 and 39 are only on two sides of the knuckle pin 16 . Everything else shown is the same as previously described in FIG. 2 .
- FIG. 4 a top plan view shows that in the preferred embodiment of the present invention, the knuckle pin head 30 is circular in shape. As shown, the elastomer rings 40 extend radially outward, slightly beyond the diameter of the shaft 32 .
- a bottom plan view of the knuckle pin 16 shows that the pin is completely symmetrical except for the snap lock tabs 37 and 39 on the bottom end 42 of the shaft 32 .
- FIG. 6 another embodiment of the knuckle pin of the present invention is shown at 60 , including a shaft 66 , wherein the shaft 66 has a top end 67 , a center region 68 , and a bottom end 69 , a knuckle-pin head 62 on the top end 67 of the shaft 66 , and a locking mechanism 76 on the bottom end 69 of the shaft 66 .
- the indented area 72 and elastomer ring 74 structure is the same as described in FIG. 2 .
- the knuckle pin head 62 is a non-round shape 64 preventing rotation of the knuckle pin 60 while inserted in the coupler-knuckle assembly 10 .
- the knuckle pin head 62 as shown has one flat side with the remaining sides round, but any other non-round shapes are contemplated in this invention.
- the shaft 66 has a reduction in the shaft diameter 70 in the center region 68 of the shaft 66 . Typically during use, very little stress is paced on the center region 68 of the shaft 66 .
- the reduction in shaft diameter 70 allows the knuckle pin 60 to be lighter because less material is used, while also facilitating the cooling process by allowing the pin to cool faster and more evenly, ensuring the pin has a uniform material matrix after the molding process.
- the bottom end of the shaft 69 has a bottom extension 78 with a hole 80 . This a non-standard element on most knuckle pins, but it allows a compressed air hose to be tied to the shaft through the hole 80 .
- FIG. 7 a sectional view including the knuckle pin 16 of the present invention locked into place in a coupler-knuckle assembly 10 is shown.
- the knuckle pin 16 is inserted into the coupler pinhole 114 that is aligned with the knuckle pinhole 116 until the locking mechanism 76 engages and prevents the pin from coming loose or falling out of the coupler-knuckle assembly 10 .
- the indented area 72 containing the elastomer rings 74 are aligned with the coupler-knuckle impact regions 112 .
- the coupler-knuckle impact regions 112 are where the coupler-knuckle assembly 10 exerts the greatest amount of force, impact, and stress on the knuckle pin 16 .
- the force and stress exerted on the knuckle pin 16 are caused by the misalignment of the knuckle pulling lugs 100 and the coupler body pulling lugs 106 .
- the knuckle has two upper pulling lugs 101 and 102 , and two lower pulling lugs 103 and 104 .
- the coupler body has two upper pulling lugs 107 and 108 , and two lower pulling lugs 109 and 110 . While in use, when uneven force is exerted on the upper and lower pulling lugs of the coupler and knuckle, the coupler knuckle assembly can become misaligned placing force, stress, and impact on the knuckle pin 16 .
- the elastomer rings 74 deform elastically absorbing the force, impact, and stress exerted on the knuckle pin 16 reducing the fatigue of the pin, and the resiliency of the elastomer rings realign the coupler 12 and knuckle 14 . Once the coupler 12 and the knuckle 14 are realigned in their original and proper position, and the outside stress is removed from the knuckle pin 16 , the elastomer rings 74 fully recover to their original position.
Abstract
An improved polymeric knuckle pin with at least one indented area that elastomer rings rest in. The indented area is strategically placed in an area on the shaft of the pin where the coupler-knuckle connection exerts impact, force, and stress on the pin. The elastomer rings in the indented area provide cushion to the pin from the impact, force, and stress, allow the pin to avoid hard contact with the coupler and knuckle, distribute the loads exerted by the coupler and knuckle more evenly, realign the coupler and knuckle positions, and protect the pin itself from surface cuts and scratches. The elastomer rings on the shaft of the pin improve the life of both the coupler-knuckle assembly and the pin.
Description
- This invention relates generally to railway car coupling systems, and more particularly to an improved polymeric knuckle pin.
- This invention is applicable to any type of coupler that uses a pin to pivotally secure the coupler and knuckle together. The knuckle pin pivotally connects a coupler and a knuckle on a railway car. Such railway knuckle pins are usually comprised of a metal or plastic material.
- Knuckle pins are shown in U.S. Pat. Nos. 5,145,076, 5,630,519, and 5,736,088. Prior known knuckle pins were made of either metal or plastic material. Metal pins are heavy, limiting the number of pins a maintenance worker can carry while checking the coupler-knuckle connection on the railroad cars. Metal pins are also very hard to maintain because they are susceptible to rust and corrosion. Furthermore, as a railway car operates, buff and draft movements cause the coupler-knuckle connection to exert stress, force, and impact on the knuckle pin. The high hardness of a metal pin may cause damage to the coupler or knuckle. The pin may bend and impede coupler-knuckle operation, and in rotator cars, if structurally compromised the pin may drop out and cause damage to the crushers.
- Prior known plastic knuckle pins alleviate some of the damages problems caused by the metal knuckle pins, however, the plastic pins were susceptible to defects caused during the formation process. It was not uncommon for plastic pins to contain air and moisture pockets, making the pins non-uniform in their material matrix. Other plastic pins contained spaced-apart annular relief areas in the shaft to improve the overall uniformity of the plastic material. However, these relief areas significantly compromise the structural integrity of the pin and create multiple stress concentration points causing the plastic pins to break easier.
- The present invention provides an improved, impact and stress absorbing knuckle pin that reduces fatigue in the coupler, knuckle, and knuckle pin.
- In accordance with the present invention, an improved railway car polymeric knuckle pin is provided for use in a railway car coupler assembly.
- The polymeric knuckle pin is comprised of a shaft, a head on one end of the shaft, and a locking mechanism on the end of the shaft opposite the head to secure the pin in position as a pivot point between a coupler and a knuckle connection on a railway car. The knuckle pin contains at least one groove in the shaft. The grove is strategically placed in an area on the shaft of the pin where the coupler-knuckle connection exerts impact, force, and stress on the pin. A single or plurality of elastomer rings is placed in the groove or grooves on the shaft. The elastomer rings in the groove provide cushion to the pin from the impact, force, and stress, allow the pin to avoid hard contact with the coupler and knuckle, distribute the loads exerted by the coupler and knuckle more evenly, realign the coupler and knuckle positions, and protect the pin itself from surface cuts and scratches. The elastomer rings on the shaft of the pin improve the life of both the coupler-knuckle assembly and the pin.
- In another embodiment of the present invention, a polymeric knuckle pin is comprised of a shaft, a head on one end of the shaft, and a locking mechanism on the other end of the shaft opposite the head. The shaft containing at least one groove at a point where the coupler-knuckle connection exerts force on the shaft of the pin. The groove or grooves contain a single elastomer ring or plurality of elastomer rings. The head of the pin is non-round shape. The shaft contains a center area between the head and the locking mechanism where the diameter of the shaft is smaller than the diameter of the rest of the shaft.
- It is an object of the present invention to provide a knuckle pin with elastomer rings that prevent the pin from permanent bending and other damages.
- It is also an object of the present invention to provide a pin with elastomer rings that have a high elasticity and will fully recover to their original position once stress from the coupler-knuckle connection is removed from the pin.
- It is a further object of the present invention to provide a knuckle pin with elastomer rings that will realign the coupler-knuckle assembly.
- It is a further object of the present invention to provide a knuckle pin with elastomer rings that will reduce damage and fatigue on the coupler-knuckle assembly.
-
FIG. 1 is a top perspective view of a coupler-knuckle assembly with the improved knuckle pin of the present invention in place; -
FIG. 2 is a front elevational view of the improved knuckle pin of the present invention; -
FIG. 3 is a side elevational view of the improved knuckle pin of the present invention; -
FIG. 4 is a top plan view of the improved knuckle pin of the present invention; -
FIG. 5 is a bottom plan view of the improved knuckle pin of the present invention; -
FIG. 6 is side perspective view of a second embodiment of the improved knuckle pin of the present invention; and -
FIG. 7 is a sectional view of the coupler-knuckle assembly along lines 7-7 ofFIG. 1 . - Referring now to
FIG. 1 , a coupler-knuckle assembly incorporating preferred embodiment the present invention is generally designated 10 and includes acoupler body 12, aknuckle 14, and aknuckle pin 16. In the present assembly, theknuckle 14 is pivotally connected to thecoupler body 12 by theknuckle pin 16. Thecoupler body 12, as shown, has itsknuckle 14 in the closed position. - Referring now to
FIG. 2 , the knuckle pin of the present invention generally indicated 16, includes ashaft 32 with acenter region 33, atop end 35, and abottom end 42. A knuckle-pin head 30 is on thetop end 35 of theshaft 32, and a snaplock locking mechanism 36 is on thebottom end 42 of theshaft 32. The knuckle pin of the present invention is preferably a solid piece of molded urethane or polyurethane as described below. In comparison to a metallic knuckle pin, the polymeric pin is lighter and more resilient, accepts bending fatigue better, and creates less friction as a pivot point between the coupler and knuckle improving performance of the coupler-knuckle assembly. - The
knuckle pin head 30 of thepin 16 has a dome-shaped top 31, which is sized diametrically larger than theshaft 32. Thepin head 30 also has a significantly larger diameter than the pinhole in the coupler-knuckle assembly. Anannular radius 34 is formed between the top end of theshaft 35 and thepin head 30 to protect against damage to the pin when installing the pin. - At the
bottom end 42 of theshaft 32, thelocking mechanism 36 is comprised of twosnap lock tabs snap lock tabs knuckle assembly 10 and expand when the pin is fully inserted into the coupler-knuckle assembly. Thesnap lock tabs - The
shaft 32 is generally cylindrical in shape and includes at least one indented area, wherein the indented area is diametrically smaller than theshaft 32. An upperindented area 38 and a lower indented area 38B are located on theshaft 32 in the coupler-knuckle impact regions 112 and 113 (shown inFIG. 7 ), but the groove can extend beyond the coupler-knuckle impact regions shaft 32. Oneindented area 38 is located onshaft 32 where theshaft 32 contacts thecoupler body 12 andknuckle 14 in the coupler-knuckletop impact region 112, and the other indented area 38B is located on theshaft 32 where theshaft 32 contacts thecoupler body 12 andknuckle 14 in the coupler-knucklebottom impact region 113.Elastomer rings 40 are located on theshaft 32 covering and filling some or all of the indented areas. In the areas of theshaft 32 where the indented areas and theelastomer rings 40 are located, the diameter of the indented area plus therings 40 are the same as the diameter of theshaft 32 or slightly larger than the diameter of the shaft. The elastomer rings of the present invention are preferably made from thermal plastic polyurethane material, but the rings can be made from any material having a high elasticity and resiliency. The number of elastomer rings varies depending on the length of the indented area and the diameter of the rings, but preferably a plurality of elastomer rings are placed inside each indented area. Placement of the elastomer rings in the indented areas along the area where the coupler-knuckle connection exerts the greatest stress, force, and impact on the knuckle pin allows fatigue on both the coupler-knuckle assembly and the pin to be reduced. The elastomer rings deform elastically absorbing the force and stress from the coupler-knuckle connection and cushion any impact that occurs. - Referring now to
FIG. 3 , theimproved knuckle pin 16 is shown in a side elevational view. Theknuckle pin 16 is completely symmetrical except for thelocking mechanism 36 on thebottom end 42 of theshaft 32. The twosnap lock tabs knuckle pin 16. Everything else shown is the same as previously described inFIG. 2 . - Referring now to
FIG. 4 , a top plan view shows that in the preferred embodiment of the present invention, theknuckle pin head 30 is circular in shape. As shown, the elastomer rings 40 extend radially outward, slightly beyond the diameter of theshaft 32. - Referring now to
FIG. 5 , a bottom plan view of theknuckle pin 16 shows that the pin is completely symmetrical except for thesnap lock tabs bottom end 42 of theshaft 32. - Referring now to
FIG. 6 , another embodiment of the knuckle pin of the present invention is shown at 60, including ashaft 66, wherein theshaft 66 has atop end 67, acenter region 68, and abottom end 69, a knuckle-pin head 62 on thetop end 67 of theshaft 66, and alocking mechanism 76 on thebottom end 69 of theshaft 66. Theindented area 72 andelastomer ring 74 structure is the same as described inFIG. 2 . In the present embodiment, theknuckle pin head 62 is anon-round shape 64 preventing rotation of theknuckle pin 60 while inserted in the coupler-knuckle assembly 10. Theknuckle pin head 62 as shown has one flat side with the remaining sides round, but any other non-round shapes are contemplated in this invention. Theshaft 66 has a reduction in theshaft diameter 70 in thecenter region 68 of theshaft 66. Typically during use, very little stress is paced on thecenter region 68 of theshaft 66. The reduction inshaft diameter 70 allows theknuckle pin 60 to be lighter because less material is used, while also facilitating the cooling process by allowing the pin to cool faster and more evenly, ensuring the pin has a uniform material matrix after the molding process. The bottom end of theshaft 69 has abottom extension 78 with ahole 80. This a non-standard element on most knuckle pins, but it allows a compressed air hose to be tied to the shaft through thehole 80. - Referring now to
FIG. 7 , a sectional view including theknuckle pin 16 of the present invention locked into place in a coupler-knuckle assembly 10 is shown. Theknuckle pin 16 is inserted into thecoupler pinhole 114 that is aligned with theknuckle pinhole 116 until thelocking mechanism 76 engages and prevents the pin from coming loose or falling out of the coupler-knuckle assembly 10. When theknuckle pin 16 is fully inserted into thecoupler knuckle assembly 10, as shown inFIG. 7 , theindented area 72 containing the elastomer rings 74 are aligned with the coupler-knuckle impact regions 112. There is a top coupler-knuckle impact region 112 and a bottom coupler-knuckle impact region 113 where the coupler and knuckle components meet. The coupler-knuckle impact regions 112 are where the coupler-knuckle assembly 10 exerts the greatest amount of force, impact, and stress on theknuckle pin 16. The force and stress exerted on theknuckle pin 16 are caused by the misalignment of theknuckle pulling lugs 100 and the coupler body pulling lugs 106. The knuckle has two upper pullinglugs lugs lugs lugs 109 and 110. While in use, when uneven force is exerted on the upper and lower pulling lugs of the coupler and knuckle, the coupler knuckle assembly can become misaligned placing force, stress, and impact on theknuckle pin 16. The elastomer rings 74 deform elastically absorbing the force, impact, and stress exerted on theknuckle pin 16 reducing the fatigue of the pin, and the resiliency of the elastomer rings realign thecoupler 12 andknuckle 14. Once thecoupler 12 and theknuckle 14 are realigned in their original and proper position, and the outside stress is removed from theknuckle pin 16, the elastomer rings 74 fully recover to their original position. - While particular embodiments of the present knuckle pin have been described herein, it will be appreciated by those skilled in the art that changes and modifications may be made thereto without departing from the invention in its broader aspects.
Claims (18)
1. An improved polymeric knuckle pin on a railway car coupler comprising:
a shaft having at least one indented area extending radially inward;
a head on one end of said shaft;
means for locking the pin into a coupler at the end of said shaft opposite said head; and
at least one elastomer ring in said at east one indented area on said shaft.
2. The polymeric knuckle pin of claim 1 , wherein said at least one indented area containing said at least one elastomer ring is positioned on said shaft in the area where a coupler and a knuckle connect and impact said knuckle pin.
3. The polymeric knuckle pin of claim 1 , wherein said shaft contains two indented areas, each indented area located on said shaft in the area where a coupler and a knuckle connect when secured by said knuckle pin.
4. The polymeric knuckle pin of claim 1 , wherein said head is non-round shape.
5. The polymeric knuckle pin of claim 1 , wherein said at least one elastomer ring is thermal plastic polyurethane.
6. The polymeric knuckle pin of claim 1 , wherein said shaft has a center region that is diametrically smaller than the rest of said shaft.
7. A polymeric knuckle pin on a railway car coupler comprising:
a shaft having at least one surface relieved portion where stress exertion and impact from a coupler-knuckle connection is exerted on said pin;
a head on one end of said shaft;
means for locking said pin into a coupler at the end of said shaft opposite said head; and
at least one impact and force absorbing ring in said at least one surface relieved portion on said shaft.
8. The polymeric knuckle pin of claim 7 , wherein said at least one groove containing said at least one elastomer ring is positioned on said shaft where a coupler and a knuckle connect and impact said knuckle pin.
9. The polymeric knuckle pin of claim 7 , wherein said shaft contains two indented areas, each indented area located on said shaft in the area where a coupler and a knuckle connect when secured by said knuckle pin.
10. The polymeric knuckle pin of claim 7 , wherein said head is non-round shape.
11. The polymeric knuckle pin of claim 7 , wherein said at least one elastomer ring is thermal plastic polyurethane.
12. The polymeric knuckle pin of claim 7 , wherein said shaft has a center region that is diametrically smaller than the rest of said shaft.
13. A polymeric knuckle pin on a railway car coupler comprising:
a shaft having at least one indented area;
wherein said at least one indented area is diametrically smaller than the rest of said shaft;
a head on one end of said shaft;
means for locking said pin into a coupler at the end of said shaft opposite said head; and
at least one elastomer ring in said at least one indented area on said shaft.
14. The polymeric knuckle pin of claim 13 , wherein said at least one indented area containing said at least one elastomer ring is positioned on said shaft where a coupler and a knuckle connect and impact said knuckle pin.
15. The polymeric knuckle pin of claim 13 , wherein said shaft contains two indented areas, each indented area located on said shaft in the area where a coupler and a knuckle connect when secured by said knuckle pin.
16. The polymeric knuckle pin of claim 13 , wherein said head is non-round shape.
17. The polymeric knuckle pin of claim 13 , wherein said at least one elastomer ring is thermal plastic polyurethane.
18. The polymeric knuckle pin of claim 13 , wherein said shaft has a center region that is diametrically smaller than the rest of said shaft.
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/659,509 US20140110368A1 (en) | 2012-10-24 | 2012-10-24 | Coupler knuckle pin |
CA2889083A CA2889083C (en) | 2012-10-24 | 2013-10-17 | Coupler knuckle pin |
AU2013334978A AU2013334978B2 (en) | 2012-10-24 | 2013-10-17 | Coupler knuckle pin |
NZ708400A NZ708400A (en) | 2012-10-24 | 2013-10-17 | Coupler knuckle pin |
BR112015009079A BR112015009079A2 (en) | 2012-10-24 | 2013-10-17 | polymeric pivot pin on a railcar coupler |
MX2014015038A MX355530B (en) | 2012-10-24 | 2013-10-17 | Coupler knuckle pin. |
PCT/US2013/065476 WO2014066140A1 (en) | 2012-10-24 | 2013-10-17 | Coupler knuckle pin |
CN201380054590.XA CN104781128A (en) | 2012-10-24 | 2013-10-17 | Coupler knuckle pin |
ZA2014/05399A ZA201405399B (en) | 2012-10-24 | 2014-07-22 | Coupler knuckle pin |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/659,509 US20140110368A1 (en) | 2012-10-24 | 2012-10-24 | Coupler knuckle pin |
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Publication Number | Publication Date |
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US20140110368A1 true US20140110368A1 (en) | 2014-04-24 |
Family
ID=50484393
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US13/659,509 Abandoned US20140110368A1 (en) | 2012-10-24 | 2012-10-24 | Coupler knuckle pin |
Country Status (9)
Country | Link |
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US (1) | US20140110368A1 (en) |
CN (1) | CN104781128A (en) |
AU (1) | AU2013334978B2 (en) |
BR (1) | BR112015009079A2 (en) |
CA (1) | CA2889083C (en) |
MX (1) | MX355530B (en) |
NZ (1) | NZ708400A (en) |
WO (1) | WO2014066140A1 (en) |
ZA (1) | ZA201405399B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9701323B2 (en) | 2015-04-06 | 2017-07-11 | Bedloe Industries Llc | Railcar coupler |
US11608095B2 (en) | 2019-01-29 | 2023-03-21 | Pennsy Corporation | Knuckle pin |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU184610U1 (en) * | 2018-08-23 | 2018-10-31 | РЕЙЛ 1520 АйПи ЛТД | Freight car hitch |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US5630519A (en) * | 1996-03-27 | 1997-05-20 | Zeftek, Inc. | Plastic knuckle pin |
US6062406A (en) * | 1998-03-26 | 2000-05-16 | Naco, Inc. | Pivot pin and retention clip assembly for a railroad car coupler |
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US4976363A (en) * | 1989-11-30 | 1990-12-11 | Amsted Industries Incorporated | Knuckle pin retainer for railway vehicle coupler |
US5145076A (en) * | 1990-11-13 | 1992-09-08 | Zeftek, Inc. | Plastic knuckle pin with annular relief grooves for preventing pin failure due to fatigue |
US6834879B1 (en) * | 2002-09-12 | 2004-12-28 | Robin Industries, Inc. | Elastomerically isolated tow hitch drawbar |
WO2007082315A1 (en) * | 2006-01-09 | 2007-07-19 | Deebar Mining & Industrial Supplies Cc | A transport system |
CN201235827Y (en) * | 2008-07-08 | 2009-05-13 | 中国北车集团大同电力机车有限责任公司 | Structure for preventing number 13 coupler from bend of coupler knuckle pin |
CN201334032Y (en) * | 2008-12-19 | 2009-10-28 | 南车长江车辆有限公司 | Fixed coupler for railway car |
-
2012
- 2012-10-24 US US13/659,509 patent/US20140110368A1/en not_active Abandoned
-
2013
- 2013-10-17 NZ NZ708400A patent/NZ708400A/en unknown
- 2013-10-17 WO PCT/US2013/065476 patent/WO2014066140A1/en active Application Filing
- 2013-10-17 CN CN201380054590.XA patent/CN104781128A/en active Pending
- 2013-10-17 BR BR112015009079A patent/BR112015009079A2/en not_active Application Discontinuation
- 2013-10-17 MX MX2014015038A patent/MX355530B/en active IP Right Grant
- 2013-10-17 AU AU2013334978A patent/AU2013334978B2/en active Active
- 2013-10-17 CA CA2889083A patent/CA2889083C/en active Active
-
2014
- 2014-07-22 ZA ZA2014/05399A patent/ZA201405399B/en unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US5630519A (en) * | 1996-03-27 | 1997-05-20 | Zeftek, Inc. | Plastic knuckle pin |
US6062406A (en) * | 1998-03-26 | 2000-05-16 | Naco, Inc. | Pivot pin and retention clip assembly for a railroad car coupler |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
US11608095B2 (en) | 2019-01-29 | 2023-03-21 | Pennsy Corporation | Knuckle pin |
Also Published As
Publication number | Publication date |
---|---|
CA2889083A1 (en) | 2014-05-01 |
ZA201405399B (en) | 2015-11-25 |
MX2014015038A (en) | 2015-03-05 |
AU2013334978B2 (en) | 2016-10-06 |
CN104781128A (en) | 2015-07-15 |
NZ708400A (en) | 2017-05-26 |
WO2014066140A1 (en) | 2014-05-01 |
MX355530B (en) | 2018-04-20 |
CA2889083C (en) | 2017-03-21 |
BR112015009079A2 (en) | 2017-08-08 |
AU2013334978A1 (en) | 2015-06-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: AMSTED RAIL COMPANY, INC., ILLINOIS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WANG, WEIPING;REEL/FRAME:029183/0872 Effective date: 20120913 |
|
AS | Assignment |
Owner name: BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT, WA Free format text: NOTICE OF GRANT OF SECURITY INTEREST IN PATENTS;ASSIGNOR:AMSTED RAIL COMPANY, INC.;REEL/FRAME:032493/0933 Effective date: 20140320 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |