CA1179906A - Piston pin with reinforcing insert - Google Patents
Piston pin with reinforcing insertInfo
- Publication number
- CA1179906A CA1179906A CA000408282A CA408282A CA1179906A CA 1179906 A CA1179906 A CA 1179906A CA 000408282 A CA000408282 A CA 000408282A CA 408282 A CA408282 A CA 408282A CA 1179906 A CA1179906 A CA 1179906A
- Authority
- CA
- Canada
- Prior art keywords
- wrist pin
- piston
- cross bore
- plugs
- coupling portion
- 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
Links
Classifications
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/10—Connection to driving members
- F16J1/14—Connection to driving members with connecting-rods, i.e. pivotal connections
- F16J1/16—Connection to driving members with connecting-rods, i.e. pivotal connections with gudgeon-pin; Gudgeon-pins
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/04—Heavy metals
- F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
- F05C2201/0448—Steel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2251/00—Material properties
- F05C2251/04—Thermal properties
- F05C2251/042—Expansivity
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Fats And Perfumes (AREA)
- Compressor (AREA)
- Valve Device For Special Equipments (AREA)
- Lift Valve (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
PISTON PIN WITH REINFORCING INSERT
Abstract of the Disclosure A piston assembly includes a piston with a cross bore for receiving a hollow wrist pin which pivotally couples the piston to a connecting rod with a hollow end. Ceramic inserts with a coefficient of expansion equal to that of the wrist pin are press-fitted into the hollow wrist pin to prevent bending and ovality of the wrist pin. The inserts include apertures or passages for allowing the escape of heated and pressurized gasses from the interior of the wrist pin between the inserts.
Abstract of the Disclosure A piston assembly includes a piston with a cross bore for receiving a hollow wrist pin which pivotally couples the piston to a connecting rod with a hollow end. Ceramic inserts with a coefficient of expansion equal to that of the wrist pin are press-fitted into the hollow wrist pin to prevent bending and ovality of the wrist pin. The inserts include apertures or passages for allowing the escape of heated and pressurized gasses from the interior of the wrist pin between the inserts.
Description
1~7~9~)6 PISTON PIN WITH REINFORCING INSERT
Background of the Invention The present invention relates to a piston assembly and more particularly to a wrist pin with ceramic reinforcing inserts.
It is well-known to provide a piston assembly with a hollow wrist pin to interconnect the piston and the connecting rod.
However, such a wrist pin must be resistant to bending and ovality caused by mechanical stresses applled to it. Axial shifting of such pins must be prevented to prevent scoring of the cylinder.
Bending and ovality have been counteracted by giving a steel wrist pin a sufficiently large outer diameter and a sufficiently small inner diameter. Such a thick-walled wrist pin adds undesir-able weight to the piston assembly. It has also been proposed to reinforce and secure a hollow wrist pin with a solid swaged metal insert, as described in U. S. Patent No. 2,770,511. Such a solid insert still contributes weight to the assembly. Another rein-forcing and securing device, including a threadably connected bolt and nut, is described in U. S. Patent No. 1,404,654. Such a device is expensive, requires substantial assembly time and also contributes substantial weight to the assembly. A two-part inner and outer sleeved wrist pin is described in U. S. Patent No. 1,384,186 and is also expensive and requires additional assem-bly steps, including the insertion and securing of cotter pins.
Other piston assemblies have used a pair of wrist pin inserts for securing and reinforcing a hollow wrist pin. Such an assembly requires considerable assembly time to screw the inserts into position. One such assembly is described in U. S. Patent No.
Background of the Invention The present invention relates to a piston assembly and more particularly to a wrist pin with ceramic reinforcing inserts.
It is well-known to provide a piston assembly with a hollow wrist pin to interconnect the piston and the connecting rod.
However, such a wrist pin must be resistant to bending and ovality caused by mechanical stresses applled to it. Axial shifting of such pins must be prevented to prevent scoring of the cylinder.
Bending and ovality have been counteracted by giving a steel wrist pin a sufficiently large outer diameter and a sufficiently small inner diameter. Such a thick-walled wrist pin adds undesir-able weight to the piston assembly. It has also been proposed to reinforce and secure a hollow wrist pin with a solid swaged metal insert, as described in U. S. Patent No. 2,770,511. Such a solid insert still contributes weight to the assembly. Another rein-forcing and securing device, including a threadably connected bolt and nut, is described in U. S. Patent No. 1,404,654. Such a device is expensive, requires substantial assembly time and also contributes substantial weight to the assembly. A two-part inner and outer sleeved wrist pin is described in U. S. Patent No. 1,384,186 and is also expensive and requires additional assem-bly steps, including the insertion and securing of cotter pins.
Other piston assemblies have used a pair of wrist pin inserts for securing and reinforcing a hollow wrist pin. Such an assembly requires considerable assembly time to screw the inserts into position. One such assembly is described in U. S. Patent No.
2,260,240 which discloses a pair of plugs which extend into opposite ends of the hollow wrist pin from threaded bodies which are received by threaded bores in the piston. Another such assembly is described in U. S. Patent No. 2,797,135 and includes expansion member inserts with a coefficient of expansion which is larger than that of the wrist pin to secure the wrist pin in the cylinder. A pair of solid disk inserts press-fitted into the wrist pin are described in U. S. Patent No. 1,887,964. However, none of these assemblies, including pairs of inserts or plugs, provide for the escape of heated and pressurized gasses from the interior of the wrist pin between the inserts, with the result that the press-fitted plugs are subject to pressure-induced displacements or blow-outs. Accordingly, there is a need for a q~
117~906 simple, inexpensive, lightweight and easily assembled wrist pin assembly with a reinforcement and securing device which allows for escape of gasses from the interior of the hollow wrist pin.
Summary of the Invention It is an object of the present invention to provide a piston assembly with wrist pin reinforcements which resists bending and ovality of a hollow wrist pin.
Another object of the present invention is to provide a piston assembly which is lightweight, inexpensive and simple to assemble-It is another object of the present invention to provide a piston assembly with wrist pin reinforcing inserts which permit release of pressurized gasses from the interior of a hollow wrist pin.
These and other objects and advantages are achieved by the present invention which includes a piston with a cross bore which receives a hollow wrist pin sized to prevent bending thereof for coupling to an apertured connecting rod. A pair of ceramic re-inforcing inserts are press-fitted into the wrist pin to prevent ovality of the wrist pin. The inserts have a coefficient of expansion which is substantially the same as that of the wrist pin so that a constant press-fit is maintained at different tem-peratures. The inserts include openings or spaces through which gasses in the interior of the wrist pin may escape.
Brief Description of the Drawings Fig. 1 is a sectional view of a piston assembly constructed according to the present invention;
Fig. 2 is a sectional view along line 2-2 of Fig. l; and Fig. 3 is a sectional view of an alternate embodiment of the 0 present invention taken along line 3-3 of Fig. 1.
Detailed Description A piston assembly 10 includes a piston 12 with a cross bore 14 extending completely therethrough. A clearance cut-out 16 extends into the piston 12 from a central portion of the cross bore 14. A clearance opening 18 extends from the rod end of the piston 12 to the cross bore 14, and includes left and right side walls 38 and 34. The length of the clearance cut-out 16 is smaller than the length of the opening 18 in the direction paral-lel to the axis of cross bore 14.
A hollow cylindrical wrist pin 20 of steel is retained for 11799()6 rotary movement in the cross bore 14 by snap rings (not shown) at either end of the pin 20. The wrist pin 20 has an outer diameter and a wall thickness which is large enough to substantially prevent bending of it due to loads applied to it in directions parallel to the axis of the piston 12. But, to save weight, the wall thickness of the wrist pin 20 is made small enough so that it would be subject to ovality if it were not reinforced in a manner to be described shortly. A bore 22 extends axially through the wrist pin 20.
A connecting rod 24 includes an apertured coupling portion 26 which receives a central portion of the wrist pin 20. The coupling portion 26 has an inner end 28 which is received by the cut-out 16 and an outer end 30 which is received by the opening 18. The dimensional relationship of the piston 12 and the con-necting rod 24 may be further described by defining a pair of overlap zones 31 and 33 extending in a direction parallel to the wrist pin axis from the most leftward possible position (account-ing for the free play between the piston 12 and the connecting rod 24) of the outer edge 32 of the inner end 28 of the rod coupling portion 26 to the wall 34 of the piston opening 18. A
second overlap zone 33 may be defined as extending from the most rightward possible position (accounting for the piston rod free play) of the outer edge 36 of the inner end 28 to the other side wall 38 of piston opening 18. Also, note that the pin engaging surface 40 of the end 30 of rod coupling portion 26 has a dimen-sion in the direction parallel to the wrist pin axis which is larger than the length of the cut-out 16. The cut-out 16 and the opening 18 are longer than the widths of ends 28 and 30 of the connecting rod 24 to provide a small amount of free play there-between.
A pair of inserts 42 and 44, formed of a ceramic materialsuch as silicon carbide, are press-fitted into the interior of wrist pin 20. Each insert has an axial length which exceeds the width of the overlap zones and is positioned in the bore 22 of wrist pin 20 so as to completely span and extend beyond both ends of the corresponding overlap zone. In a preferred embodiment, both inserts are similar to insert 42, best seen in Figs. 1 and 2, wherein the inserts are solid discs with a central aperture 46 extending therethrough to permit escape of gasses from the interior of the wrist pin 20 between the inserts 42 and 44. In an alter-11~7~9()6 nate embodiment, both inserts are similar to insert 44, best seenin Figs. l and 3, wherein the inserts include a central hub or core 48 from which project a plurality of spaced-apart wrist pin-engaging legs 50. In this embodiment, gasses are allowed to escape through the apertures or spaces between the legs 50.
Since silicon carbide has a coefficient of thermal expansion very similar to that of the steel of wrist pin 20, a press-fit of substantially constant tightness may be obtained between the inserts and the wrist pin 20 over a significant range of temper-atures. Also, with the two inserts axially spaced apart in thebore 22 and each spanning one of the overlap zones 31 and 33, any ovality of the wrist pin 20 is substantially prevented by the reinforcement provided by the inserts 42 and 44 and the resulting assembly is substantially lighter in weight than would be the case if no inserts were used and instead, the ovality were pre-vented by having a heavier wrist pin with a smaller inner diam-eter. Furthermore, the resulting assembly has improved rigidity due to the fact that a ceramic material such as silicon carbide is stiffer than steel.
117~906 simple, inexpensive, lightweight and easily assembled wrist pin assembly with a reinforcement and securing device which allows for escape of gasses from the interior of the hollow wrist pin.
Summary of the Invention It is an object of the present invention to provide a piston assembly with wrist pin reinforcements which resists bending and ovality of a hollow wrist pin.
Another object of the present invention is to provide a piston assembly which is lightweight, inexpensive and simple to assemble-It is another object of the present invention to provide a piston assembly with wrist pin reinforcing inserts which permit release of pressurized gasses from the interior of a hollow wrist pin.
These and other objects and advantages are achieved by the present invention which includes a piston with a cross bore which receives a hollow wrist pin sized to prevent bending thereof for coupling to an apertured connecting rod. A pair of ceramic re-inforcing inserts are press-fitted into the wrist pin to prevent ovality of the wrist pin. The inserts have a coefficient of expansion which is substantially the same as that of the wrist pin so that a constant press-fit is maintained at different tem-peratures. The inserts include openings or spaces through which gasses in the interior of the wrist pin may escape.
Brief Description of the Drawings Fig. 1 is a sectional view of a piston assembly constructed according to the present invention;
Fig. 2 is a sectional view along line 2-2 of Fig. l; and Fig. 3 is a sectional view of an alternate embodiment of the 0 present invention taken along line 3-3 of Fig. 1.
Detailed Description A piston assembly 10 includes a piston 12 with a cross bore 14 extending completely therethrough. A clearance cut-out 16 extends into the piston 12 from a central portion of the cross bore 14. A clearance opening 18 extends from the rod end of the piston 12 to the cross bore 14, and includes left and right side walls 38 and 34. The length of the clearance cut-out 16 is smaller than the length of the opening 18 in the direction paral-lel to the axis of cross bore 14.
A hollow cylindrical wrist pin 20 of steel is retained for 11799()6 rotary movement in the cross bore 14 by snap rings (not shown) at either end of the pin 20. The wrist pin 20 has an outer diameter and a wall thickness which is large enough to substantially prevent bending of it due to loads applied to it in directions parallel to the axis of the piston 12. But, to save weight, the wall thickness of the wrist pin 20 is made small enough so that it would be subject to ovality if it were not reinforced in a manner to be described shortly. A bore 22 extends axially through the wrist pin 20.
A connecting rod 24 includes an apertured coupling portion 26 which receives a central portion of the wrist pin 20. The coupling portion 26 has an inner end 28 which is received by the cut-out 16 and an outer end 30 which is received by the opening 18. The dimensional relationship of the piston 12 and the con-necting rod 24 may be further described by defining a pair of overlap zones 31 and 33 extending in a direction parallel to the wrist pin axis from the most leftward possible position (account-ing for the free play between the piston 12 and the connecting rod 24) of the outer edge 32 of the inner end 28 of the rod coupling portion 26 to the wall 34 of the piston opening 18. A
second overlap zone 33 may be defined as extending from the most rightward possible position (accounting for the piston rod free play) of the outer edge 36 of the inner end 28 to the other side wall 38 of piston opening 18. Also, note that the pin engaging surface 40 of the end 30 of rod coupling portion 26 has a dimen-sion in the direction parallel to the wrist pin axis which is larger than the length of the cut-out 16. The cut-out 16 and the opening 18 are longer than the widths of ends 28 and 30 of the connecting rod 24 to provide a small amount of free play there-between.
A pair of inserts 42 and 44, formed of a ceramic materialsuch as silicon carbide, are press-fitted into the interior of wrist pin 20. Each insert has an axial length which exceeds the width of the overlap zones and is positioned in the bore 22 of wrist pin 20 so as to completely span and extend beyond both ends of the corresponding overlap zone. In a preferred embodiment, both inserts are similar to insert 42, best seen in Figs. 1 and 2, wherein the inserts are solid discs with a central aperture 46 extending therethrough to permit escape of gasses from the interior of the wrist pin 20 between the inserts 42 and 44. In an alter-11~7~9()6 nate embodiment, both inserts are similar to insert 44, best seenin Figs. l and 3, wherein the inserts include a central hub or core 48 from which project a plurality of spaced-apart wrist pin-engaging legs 50. In this embodiment, gasses are allowed to escape through the apertures or spaces between the legs 50.
Since silicon carbide has a coefficient of thermal expansion very similar to that of the steel of wrist pin 20, a press-fit of substantially constant tightness may be obtained between the inserts and the wrist pin 20 over a significant range of temper-atures. Also, with the two inserts axially spaced apart in thebore 22 and each spanning one of the overlap zones 31 and 33, any ovality of the wrist pin 20 is substantially prevented by the reinforcement provided by the inserts 42 and 44 and the resulting assembly is substantially lighter in weight than would be the case if no inserts were used and instead, the ovality were pre-vented by having a heavier wrist pin with a smaller inner diam-eter. Furthermore, the resulting assembly has improved rigidity due to the fact that a ceramic material such as silicon carbide is stiffer than steel.
Claims (7)
PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A piston assembly comprising:
a piston having a cross bore extending therethrough, a cut-out extending into the piston from the cross bore and an opening extending from the cross bore to a rod end of the piston, the cut-out having a smaller length than the opening along a direction parallel to an axis of the cross bore;
a hollow cylindrical wrist pin mounted in the cross bore and having an outer diameter and a wall thickness large enough to substantially prevent bending thereof;
a connecting rod having an apertured coupling portion re-ceiving the wrist pin, the coupling portion having an inner end received by the cut-out and an outer end received by the opening, the connecting rod and piston cooperating to define a pair of overlap zones each extending outwardly parallel to the axis of the wrist pin from a position of an outer edge of the inner end of the rod coupling portion to a wall of the opening; and a pair of ceramic plugs press-fitted into the interior of the hollow wrist pin, each plug having an axial length and an axial position in the wrist pin bore 22 so as to completely span a corresponding one of the overlap zones, the plugs and wrist pin having substantially equivalent coefficients of thermal expansion, the plugs having means for exhausting gasses from the interior of the wrist pin.
a piston having a cross bore extending therethrough, a cut-out extending into the piston from the cross bore and an opening extending from the cross bore to a rod end of the piston, the cut-out having a smaller length than the opening along a direction parallel to an axis of the cross bore;
a hollow cylindrical wrist pin mounted in the cross bore and having an outer diameter and a wall thickness large enough to substantially prevent bending thereof;
a connecting rod having an apertured coupling portion re-ceiving the wrist pin, the coupling portion having an inner end received by the cut-out and an outer end received by the opening, the connecting rod and piston cooperating to define a pair of overlap zones each extending outwardly parallel to the axis of the wrist pin from a position of an outer edge of the inner end of the rod coupling portion to a wall of the opening; and a pair of ceramic plugs press-fitted into the interior of the hollow wrist pin, each plug having an axial length and an axial position in the wrist pin bore 22 so as to completely span a corresponding one of the overlap zones, the plugs and wrist pin having substantially equivalent coefficients of thermal expansion, the plugs having means for exhausting gasses from the interior of the wrist pin.
2. The invention of claim 1, wherein:
the outer end of the rod coupling portion has a pin-engaging surface which has a dimension in a direction parallel to the wrist pin axis which is larger than the length of the cut-out.
the outer end of the rod coupling portion has a pin-engaging surface which has a dimension in a direction parallel to the wrist pin axis which is larger than the length of the cut-out.
3. The invention of claim 1, wherein:
each plug comprises a solid disc with an aperture extending axially therethrough, the aperture permitting escape of gasses from the interior of the wrist pin between the plugs.
each plug comprises a solid disc with an aperture extending axially therethrough, the aperture permitting escape of gasses from the interior of the wrist pin between the plugs.
4. The invention of claim 1, wherein:
each plug comprises a central core having a plurality of spaced-apart, wrist pin-engaging legs projecting therefrom, the spaces between the legs permitting escape of gasses from the interior of the wrist pin between the plugs.
each plug comprises a central core having a plurality of spaced-apart, wrist pin-engaging legs projecting therefrom, the spaces between the legs permitting escape of gasses from the interior of the wrist pin between the plugs.
5. The invention of claim 1 wherein the plugs are comprised of a silicon-carbide ceramic material.
6. A piston assembly comprising:
a piston having a cross bore extending therethrough, a cut-out extending into the piston from the cross bore toward the head end and an opening extending from the cross bore to a rod end of the piston, the cut-out having a smaller length than the opening along a direction parallel to an axis of the cross bore;
a hollow cylindrical wrist pin mounted in the cross bore and having an outer diameter and a wall thickness large enough to substantially prevent bending thereof;
a connecting rod having an apertured coupling portion re-ceiving the wrist pin, the coupling portion having an inner end received by the cut-out and an outer end received by the opening, the connecting rod and piston cooperating to define a pair of overlap zones each extending outwardly parallel to the axis of the wrist pin from a position of an outer edge of the inner end of the rod coupling portion to a wall of the opening, the outer end of the rod coupling portion having a pin-engaging surface which has a dimension in a direction parallel to the wrist pin axis which is larger than the length of the cut-out in the piston;
and a pair of ceramic plugs press-fitted into the interior of the hollow wrist pin, each plug comprising a central core having a plurality of spaced-apart, wrist pin-engaging legs projecting radially therefrom, each plug having an axial length and an axial position in the wrist pin so as to completely span a corres-ponding one of the overlap zones.
a piston having a cross bore extending therethrough, a cut-out extending into the piston from the cross bore toward the head end and an opening extending from the cross bore to a rod end of the piston, the cut-out having a smaller length than the opening along a direction parallel to an axis of the cross bore;
a hollow cylindrical wrist pin mounted in the cross bore and having an outer diameter and a wall thickness large enough to substantially prevent bending thereof;
a connecting rod having an apertured coupling portion re-ceiving the wrist pin, the coupling portion having an inner end received by the cut-out and an outer end received by the opening, the connecting rod and piston cooperating to define a pair of overlap zones each extending outwardly parallel to the axis of the wrist pin from a position of an outer edge of the inner end of the rod coupling portion to a wall of the opening, the outer end of the rod coupling portion having a pin-engaging surface which has a dimension in a direction parallel to the wrist pin axis which is larger than the length of the cut-out in the piston;
and a pair of ceramic plugs press-fitted into the interior of the hollow wrist pin, each plug comprising a central core having a plurality of spaced-apart, wrist pin-engaging legs projecting radially therefrom, each plug having an axial length and an axial position in the wrist pin so as to completely span a corres-ponding one of the overlap zones.
7. A piston assembly comprising:
a piston having a cross bore extending therethrough;
a hollow cylindrical wrist pin mounted in the cross bore and having an outer diameter and a wall thickness large enough to substantially prevent bending thereof;
a connecting rod having an apertured coupling portion re-ceiving the wrist pin; and a pair of ceramic plugs press-fitted into the interior of the hollow wrist pin, each plug comprising a solid disc with an aperture extending axially therethrough, the aperture permitting escape of gasses from the interior of the wrist pin between the plugs, and the plugs reinforcing the wrist pin to aid in preven-tion of ovality of the wrist pin.
a piston having a cross bore extending therethrough;
a hollow cylindrical wrist pin mounted in the cross bore and having an outer diameter and a wall thickness large enough to substantially prevent bending thereof;
a connecting rod having an apertured coupling portion re-ceiving the wrist pin; and a pair of ceramic plugs press-fitted into the interior of the hollow wrist pin, each plug comprising a solid disc with an aperture extending axially therethrough, the aperture permitting escape of gasses from the interior of the wrist pin between the plugs, and the plugs reinforcing the wrist pin to aid in preven-tion of ovality of the wrist pin.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US29121381A | 1981-08-10 | 1981-08-10 | |
| US291,213 | 1988-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1179906A true CA1179906A (en) | 1984-12-27 |
Family
ID=23119366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000408282A Expired CA1179906A (en) | 1981-08-10 | 1982-07-28 | Piston pin with reinforcing insert |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0071994B1 (en) |
| JP (1) | JPS5842864A (en) |
| AT (1) | ATE15100T1 (en) |
| BR (1) | BR8204658A (en) |
| CA (1) | CA1179906A (en) |
| DE (1) | DE3265615D1 (en) |
| ES (1) | ES8308392A1 (en) |
| ZA (1) | ZA825754B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3521796A1 (en) * | 1985-06-19 | 1987-01-02 | Kolbenschmidt Ag | PISTON PIN |
| JPH02124363U (en) * | 1989-03-23 | 1990-10-12 | ||
| DE3939261A1 (en) * | 1989-11-28 | 1991-05-29 | Audi Ag | Elongated part e.g. connecting rod with core and cast covering - has compression resistant e.g. sintered material core with clamping pins extending into outer steel cover |
| JP2678349B2 (en) * | 1994-11-10 | 1997-11-17 | 日本特殊陶業株式会社 | Ceramic piston pin manufacturing method |
| US5868112A (en) * | 1996-12-19 | 1999-02-09 | Cummins Engine Company, Inc. | Deep angle injection nozzle and piston having complementary combustion bowl |
| US6732703B2 (en) | 2002-06-11 | 2004-05-11 | Cummins Inc. | Internal combustion engine producing low emissions |
| US7210448B2 (en) | 2002-06-11 | 2007-05-01 | Cummins, Inc. | Internal combustion engine producing low emissions |
| DE102004023379A1 (en) * | 2004-05-12 | 2005-12-08 | Fev Motorentechnik Gmbh | Gudgeon pin for piston of diesel engine has axial depressing holes formed around center of reinforcement bar |
| IT1392559B1 (en) * | 2008-12-22 | 2012-03-09 | Porta S P A Ag | PIN FOR INTERNAL COMBUSTION ENGINE AND PROCEDURE FOR ITS MANUFACTURING. |
| US8677970B2 (en) | 2011-03-17 | 2014-03-25 | Cummins Intellectual Property, Inc. | Piston for internal combustion engine |
| DE102012022912A1 (en) * | 2012-11-23 | 2014-05-28 | Mahle International Gmbh | Piston pin for a piston of an internal combustion engine |
| US9970476B2 (en) | 2016-02-19 | 2018-05-15 | GM Global Technology Operations LLC | Crankshaft assembly with core plug and method of manufacturing a crankshaft assembly |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1049628B (en) * | 1959-01-29 | |||
| US2797135A (en) * | 1953-06-05 | 1957-06-25 | Goetaverken Ab | Needle or roller bearing for mounting a connecting rod on a gudgeon pin |
| US2770511A (en) * | 1954-11-22 | 1956-11-13 | Continental Motors Corp | Wrist pin assembly |
-
1982
- 1982-07-28 CA CA000408282A patent/CA1179906A/en not_active Expired
- 1982-08-06 EP EP82107121A patent/EP0071994B1/en not_active Expired
- 1982-08-06 DE DE8282107121T patent/DE3265615D1/en not_active Expired
- 1982-08-06 AT AT82107121T patent/ATE15100T1/en not_active IP Right Cessation
- 1982-08-09 ZA ZA825754A patent/ZA825754B/en unknown
- 1982-08-09 ES ES514849A patent/ES8308392A1/en not_active Expired
- 1982-08-09 BR BR8204658A patent/BR8204658A/en unknown
- 1982-08-10 JP JP57139101A patent/JPS5842864A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE3265615D1 (en) | 1985-09-26 |
| ES514849A0 (en) | 1983-08-16 |
| EP0071994B1 (en) | 1985-08-21 |
| BR8204658A (en) | 1983-08-02 |
| ZA825754B (en) | 1984-03-28 |
| ES8308392A1 (en) | 1983-08-16 |
| EP0071994A1 (en) | 1983-02-16 |
| ATE15100T1 (en) | 1985-09-15 |
| JPS5842864A (en) | 1983-03-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1179906A (en) | Piston pin with reinforcing insert | |
| KR960015247B1 (en) | Hollow shaft with driving elements affixed by means of expansion and with axially differing material properties | |
| JP2006509976A (en) | Elastic chassis support for commercial vehicles | |
| WO2002032751A2 (en) | Bicycle crank set | |
| US3482467A (en) | Connecting rod | |
| EP0191760B1 (en) | Conveyor chain | |
| JPS6223165B2 (en) | ||
| KR20040111407A (en) | Coupling | |
| US5230407A (en) | Linkage rod with shock absorbing | |
| US5553964A (en) | Mechanical tubular element such as transmission shaft of a motor vehicle | |
| US4015908A (en) | Multiple-piece crankshaft | |
| JPS6327581B2 (en) | ||
| CA2002191C (en) | Crankshaft with hollow pins | |
| EP0464202A4 (en) | Pressure vessel made of composite material | |
| CA1147562A (en) | Chain link construction | |
| US5946982A (en) | Bicycle crank arm with multiple chain wheels | |
| US4106877A (en) | Lobular pin | |
| US5906543A (en) | Low or no-lash slider shaft for a steering column | |
| US4853060A (en) | Method of forming a composite tubular structure | |
| CA1186519A (en) | One-piece flexible coupling | |
| US6415682B1 (en) | Pedal assembly with wedge fastener | |
| US4622862A (en) | Actuator rod for push-pull mechanisms | |
| GB2231120A (en) | Resilient bush | |
| JP2976884B2 (en) | Lightening structure of crankshaft | |
| US5561262A (en) | Spin-stabilized carrier projectile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEC | Expiry (correction) | ||
| MKEX | Expiry |