CA1074196A - Fuel injection arrangement - Google Patents
Fuel injection arrangementInfo
- Publication number
- CA1074196A CA1074196A CA292,551A CA292551A CA1074196A CA 1074196 A CA1074196 A CA 1074196A CA 292551 A CA292551 A CA 292551A CA 1074196 A CA1074196 A CA 1074196A
- Authority
- CA
- Canada
- Prior art keywords
- retention member
- bore
- fuel injection
- fuel
- enlarged end
- 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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/004—Joints; Sealings
- F02M55/005—Joints; Sealings for high pressure conduits, e.g. connected to pump outlet or to injector inlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Belt Conveyors (AREA)
Abstract
Abstract of the Disclosure A fuel injection arrangement for an internal combustion engine having a cylinder head comprises a fuel injection device located against a step in a borein the cylinder head.
The device includes a valve member which is spring loaded to a closed position but which is opened by fuel under pressure which flows through an inlet. The device is retained against the step in the bore by a member having a head and a shank portion the latter being in screw thread enlargement in the bore. The shank portion defines a surface to engage an enlarge-ment on the fuel supply pipe and the enlargement also engages surface formed on the device adjacent the inlet. The member therefore serves to retain the pipe in sealing engagement with the inlet and also retains the device in position within the bore.
The device includes a valve member which is spring loaded to a closed position but which is opened by fuel under pressure which flows through an inlet. The device is retained against the step in the bore by a member having a head and a shank portion the latter being in screw thread enlargement in the bore. The shank portion defines a surface to engage an enlarge-ment on the fuel supply pipe and the enlargement also engages surface formed on the device adjacent the inlet. The member therefore serves to retain the pipe in sealing engagement with the inlet and also retains the device in position within the bore.
Description
~t7~1L96 This inven-tion relates to a fuel injection arrangement in an internal combustion engine, the engine preferably being of the compression ignition type.
~ uel injection nozzles for compression ignition engines operate at high pressures and therefore need to be secured very firmly in the cylinder head of an engine. In order to withstand the high pressure, the fuel supply pipes must be strong and are made of a relatively inflexible ma-terial. When instal]ing the fuel injection nozzles, great care must be taken not to impose an~ undue strain on the supply pipes which could cause leakage of fuel. To meet these criteria, known constructions make use of a separate retaining nut which bears against a step defined in the body of the nozzle and which is screw-threaded into a bore in the cylinder head of the engine. Such constructions are however relatively complicated and expensive to manufacture.
According to the present invention, there is provided a fuel injection arrangement for an internal combustion engine including a cylinder head having a bore therethrough comprising a fuel injection device located in said bore, the device including a housiny having a seating thereon and a valve member slidable within the housing and co-operating with the seating to control the flow of fuel from the device in use; a fuel pipe in ~low communication with the fuel injection device and having an enlarged end portion; and a retention member in screw threaded engagement with the cylinder head, the retention member and the housing having respective abutments thereon which engage axially opposed parts of the enlarged end portion of the fuel pipe so as to trap and de~orm the enlarged end portion therebetween to provide liquid type seals between said ~30 enlarged end portion and said retention member and housing ~ respectively, the retention member also holding the fuel :
injection device in position in said bore.
~ uel injection nozzles for compression ignition engines operate at high pressures and therefore need to be secured very firmly in the cylinder head of an engine. In order to withstand the high pressure, the fuel supply pipes must be strong and are made of a relatively inflexible ma-terial. When instal]ing the fuel injection nozzles, great care must be taken not to impose an~ undue strain on the supply pipes which could cause leakage of fuel. To meet these criteria, known constructions make use of a separate retaining nut which bears against a step defined in the body of the nozzle and which is screw-threaded into a bore in the cylinder head of the engine. Such constructions are however relatively complicated and expensive to manufacture.
According to the present invention, there is provided a fuel injection arrangement for an internal combustion engine including a cylinder head having a bore therethrough comprising a fuel injection device located in said bore, the device including a housiny having a seating thereon and a valve member slidable within the housing and co-operating with the seating to control the flow of fuel from the device in use; a fuel pipe in ~low communication with the fuel injection device and having an enlarged end portion; and a retention member in screw threaded engagement with the cylinder head, the retention member and the housing having respective abutments thereon which engage axially opposed parts of the enlarged end portion of the fuel pipe so as to trap and de~orm the enlarged end portion therebetween to provide liquid type seals between said ~30 enlarged end portion and said retention member and housing ~ respectively, the retention member also holding the fuel :
injection device in position in said bore.
2-~(:)741'~6 Preferably, said bore i5 stepped and the fuel injection device is urged into engagemen-t with the step in the bore by the member acting through the intermediary of the enlarged end portion.
In one embodiment, the member includes a head portion and a screw-threaded shank portion which surrounds the fuel pipe with clearance, the abutment being provided on the head portion and an end of the fuel injec-tion device being accommodated within the shank portion.
~; .
~ 30 ~ .
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1~74~
In an alternative emho~i.ment, the member include~ a head por-tion and a ~crew-threaded shank portlon, and the abut~ent is provided at or adjacent an end of the shank portion remote from the head portion.
Either or both of the abutments may be ærmed ~y a chamfered surface.
The enlarged end portiou o~ the fu~l pipe may be formed by an olive aurrounding the end o~ the pipe9 or may be formed by the end o~ the pipe being flared outwa~dly.
.
Embodiments of the present invention will now be de~cribed by way o~ example, with refer2nce to the accompanying drawing~ in which:-~igure 1 i5 a sectional qide view af a compre~sion ignition engine pro~ided with a fir~t embodiment of a fuel injection arranga-mer~t according to the pre~ent invention, ~igure 2 ~ a sectional side view o~ a compres~ion ignitio~
engine provided with a second embodiment o~ a ~uel injection arrange~
, ment acco~ding to the pre~ent i~ventionJ and Figure 3 is a sectlonal side view of a modiPication of the fuel injection arrangeme~ts ~hown in Figures 1 a~d 2.
Refarring to Figure 1 the fuel injection arrang0ment show~
therein~comprises a ~uel injection de~ice 10 located in a bore 11 , in a cyllnder head 12 of the eng.ine and engaging a ~tep 13 in the ;~ ~ bore 11 through the intermediary of a sea~ing wa~her 13a~ T~e injection device 10 include~ a housing 14 formed in *wo parts 15, 16 which are mutually ~ealingly engaged and which de~ine a chamber-in the housing 1~ . The housing part 15 has a fuel inlet opaning 17 therein communicating with the chamber, and the ho~lsing part 16 .
` ~ ~ , . . . .. ....
_Aei.~iil, ......... ~ .... . ._L. l~C3s,tf'~1¢3'~; ...
ha~ an axial bore therein in ~*lich a poppet valve member 18 i9 slidably hou~edO A head of the member 18 co~operateis.
with a seating 19 on th~ housin5~, part 16 to control the flow of fuel into a combu3tion chamber 20 o~ the engine into which the nS~rrower end oP the bore 11 open3.
A stsm of mernber 18 isS 80 sized relative to the bore i~s hou~lng part 16 that an annular s~Space is3 defined between the stem and the side wnll of th0 bore, whlch space communicato~ i with the chamber via openinge 21 in th0 houslng part 16. A .
collar 22 is9 provided on tha stem and ha~ helical ~rooes *heroin, .:::
the groo~es3 aoting to impart a swirling motion to the fuel asS
it i8 e~ected ~rom the in~ection deYice 10 to enhance atomiS3a-tion o~ the ~uel. The ope~ation o~ thi~ form of in~ection devlce i~ well know~, and will not ba described f~rther. An :~:
end c~ the valva member 18 remo*e from the head thereo~ ha~
a spring, abutment 23 mounted thereonf and a s~pring 24 i~
accommod~edln the houssing ahamber between the spring abutme~t 23 and the housing part 16 the spring 24 acting to ¦
oppose lifting o~ the ~a~e member 18 off the ~eating 19.
~ 20 The fuel in~ection arrangcment ~urther oompr~f3efs a : ~ ~uel supply pip0 Z6 whose end if3 enlarged b~ mean~s of an~ !
oli~ 27, and a screw-threaded member 28 ha~ing a central opening through ~hich the pipe 26 pass~s~ The me~ber 28 include~ ~ head portion 29 and a shank portlon 30 , integral therew~th which i~ ~cr~w-threaded on its external i ~urfaoe and which engages corresponding ~crew-threading I ~ on the ~ide ~all o~ bore 11, ~n end of the shan~ portion 30 remote ~rom the head portion 29 i5 chamfered 80 a~ to deflne a~ abutment 31~ The hou~ing 14 of the ~uel 1.
.
, 7~ Lf~396 injection df~fvice lO is also chamfered in the region of the inlet opening 17 so aq to de~irlf3f a further abutmf_fnt 32. The abutments 31, 32 ff-ffngage axially opposed parts of the oli~e 27, f~O that the end of the pipe Z6 i~ trappefd therebetween, the pipe 26 thfefreby being h01d in flow f~o~mfunication with the inlet opening 17fff Liquid tight seala between the member 28 and the olive 27 on the o~e ha~d, a~d between the housi~g 14 and the ollvf~f 27 on the other hand are produced by de~ormation of t~3f oli~ffff 27 as the member 28 i~ screwed down.
From the above, it will be appreciatf3fd that the scrafw-threaded member 28 not only fser~e~ to connect the pip~
26 to the in~ection de~lca lO 9 but alqo ser~ef~f to hold the injection davice lO in position in the bOrf3f 11 by acting on thfs olive 27 and, throufgh the intermediary o~
the latter, urging the device lO into engagemant with ~hfsf stop 13 in the borff,11~
The fuff~fl injection arrangement qhown in Fifgure 2 is similar to that de_rribed abo~e in rfPflation to Fisurf~f l~f .
~imilar part3 being accorded tha qame re~erenc~f numerala with ~,, ~ 100 addedffff I~ thifq~ 0mbodiment~ ho~ffqfver, the ~hank portiafn 130 . ~ ~
o~ the screw-threaded ~fember 128 f~furrounds *hfFff e~d of the fuel .~ inilectlon f~e~ioe llO fand the bOrf3lll i9 furthf~fr ~teppfsffd to J accf~fm~.odate the threafded membef~ff~ The olivs 127 is trapped between the abutment t3Z on the hou~ing ~ff~ of the fufsl inJection e~icef 110 and an abutwent 133 on thf3f head portion 12~f o~ the screw- .
5 - .' " ' , ., i , ~
.
~: . . :
~74~
threaded member 128.
From a comparison of Figures 1 arJd 2 it will be appreciated that the arrangement of Fiyure 2 occupies less axial space in the cylinder head than that of Figure 1.
A modification of the above described arrangement is ; illustrated in Figure 3. In the embodiments of Figures 1 and 2, sealing between an end of the housing part 15, 115, and the step 13, 113 in the bore 11, 111 is effected by means of the sealing washer 13a, 113a. ~owever, this form of arrangement can be replaced by that shown in E'iy~lre 3, in which the end of the body part (referenced 150) is radiussed and engages the seat ~referenced 151) directly. The seat itself is of spherical or substantially spherical form and its radius of curvature is greater than the radius o~ the end of the body part, so that the body part and the seat can be mutually sealingly engaged.
In a m~dified arrangement tnot shown) the olive is omitted and the end of the fuel supply pipe 26, 126 is enlarged by flaring the wall thereof outwardly.
The constructions described obviate the need to provide two separate arrangements for securing the pipe to the housing ~ and for securing the device within the bore. ~s a result ;, there is an economy of parts and the axial length of the injec-l tion devicecan be made smaller.
.j~ .
l, ~30 ''~
~, .
~:
, .
~, - . . , : ~ . .
.
In one embodiment, the member includes a head portion and a screw-threaded shank portion which surrounds the fuel pipe with clearance, the abutment being provided on the head portion and an end of the fuel injec-tion device being accommodated within the shank portion.
~; .
~ 30 ~ .
-2a-~.~
' , ' ~" ~
1~74~
In an alternative emho~i.ment, the member include~ a head por-tion and a ~crew-threaded shank portlon, and the abut~ent is provided at or adjacent an end of the shank portion remote from the head portion.
Either or both of the abutments may be ærmed ~y a chamfered surface.
The enlarged end portiou o~ the fu~l pipe may be formed by an olive aurrounding the end o~ the pipe9 or may be formed by the end o~ the pipe being flared outwa~dly.
.
Embodiments of the present invention will now be de~cribed by way o~ example, with refer2nce to the accompanying drawing~ in which:-~igure 1 i5 a sectional qide view af a compre~sion ignition engine pro~ided with a fir~t embodiment of a fuel injection arranga-mer~t according to the pre~ent invention, ~igure 2 ~ a sectional side view o~ a compres~ion ignitio~
engine provided with a second embodiment o~ a ~uel injection arrange~
, ment acco~ding to the pre~ent i~ventionJ and Figure 3 is a sectlonal side view of a modiPication of the fuel injection arrangeme~ts ~hown in Figures 1 a~d 2.
Refarring to Figure 1 the fuel injection arrang0ment show~
therein~comprises a ~uel injection de~ice 10 located in a bore 11 , in a cyllnder head 12 of the eng.ine and engaging a ~tep 13 in the ;~ ~ bore 11 through the intermediary of a sea~ing wa~her 13a~ T~e injection device 10 include~ a housing 14 formed in *wo parts 15, 16 which are mutually ~ealingly engaged and which de~ine a chamber-in the housing 1~ . The housing part 15 has a fuel inlet opaning 17 therein communicating with the chamber, and the ho~lsing part 16 .
` ~ ~ , . . . .. ....
_Aei.~iil, ......... ~ .... . ._L. l~C3s,tf'~1¢3'~; ...
ha~ an axial bore therein in ~*lich a poppet valve member 18 i9 slidably hou~edO A head of the member 18 co~operateis.
with a seating 19 on th~ housin5~, part 16 to control the flow of fuel into a combu3tion chamber 20 o~ the engine into which the nS~rrower end oP the bore 11 open3.
A stsm of mernber 18 isS 80 sized relative to the bore i~s hou~lng part 16 that an annular s~Space is3 defined between the stem and the side wnll of th0 bore, whlch space communicato~ i with the chamber via openinge 21 in th0 houslng part 16. A .
collar 22 is9 provided on tha stem and ha~ helical ~rooes *heroin, .:::
the groo~es3 aoting to impart a swirling motion to the fuel asS
it i8 e~ected ~rom the in~ection deYice 10 to enhance atomiS3a-tion o~ the ~uel. The ope~ation o~ thi~ form of in~ection devlce i~ well know~, and will not ba described f~rther. An :~:
end c~ the valva member 18 remo*e from the head thereo~ ha~
a spring, abutment 23 mounted thereonf and a s~pring 24 i~
accommod~edln the houssing ahamber between the spring abutme~t 23 and the housing part 16 the spring 24 acting to ¦
oppose lifting o~ the ~a~e member 18 off the ~eating 19.
~ 20 The fuel in~ection arrangcment ~urther oompr~f3efs a : ~ ~uel supply pip0 Z6 whose end if3 enlarged b~ mean~s of an~ !
oli~ 27, and a screw-threaded member 28 ha~ing a central opening through ~hich the pipe 26 pass~s~ The me~ber 28 include~ ~ head portion 29 and a shank portlon 30 , integral therew~th which i~ ~cr~w-threaded on its external i ~urfaoe and which engages corresponding ~crew-threading I ~ on the ~ide ~all o~ bore 11, ~n end of the shan~ portion 30 remote ~rom the head portion 29 i5 chamfered 80 a~ to deflne a~ abutment 31~ The hou~ing 14 of the ~uel 1.
.
, 7~ Lf~396 injection df~fvice lO is also chamfered in the region of the inlet opening 17 so aq to de~irlf3f a further abutmf_fnt 32. The abutments 31, 32 ff-ffngage axially opposed parts of the oli~e 27, f~O that the end of the pipe Z6 i~ trappefd therebetween, the pipe 26 thfefreby being h01d in flow f~o~mfunication with the inlet opening 17fff Liquid tight seala between the member 28 and the olive 27 on the o~e ha~d, a~d between the housi~g 14 and the ollvf~f 27 on the other hand are produced by de~ormation of t~3f oli~ffff 27 as the member 28 i~ screwed down.
From the above, it will be appreciatf3fd that the scrafw-threaded member 28 not only fser~e~ to connect the pip~
26 to the in~ection de~lca lO 9 but alqo ser~ef~f to hold the injection davice lO in position in the bOrf3f 11 by acting on thfs olive 27 and, throufgh the intermediary o~
the latter, urging the device lO into engagemant with ~hfsf stop 13 in the borff,11~
The fuff~fl injection arrangement qhown in Fifgure 2 is similar to that de_rribed abo~e in rfPflation to Fisurf~f l~f .
~imilar part3 being accorded tha qame re~erenc~f numerala with ~,, ~ 100 addedffff I~ thifq~ 0mbodiment~ ho~ffqfver, the ~hank portiafn 130 . ~ ~
o~ the screw-threaded ~fember 128 f~furrounds *hfFff e~d of the fuel .~ inilectlon f~e~ioe llO fand the bOrf3lll i9 furthf~fr ~teppfsffd to J accf~fm~.odate the threafded membef~ff~ The olivs 127 is trapped between the abutment t3Z on the hou~ing ~ff~ of the fufsl inJection e~icef 110 and an abutwent 133 on thf3f head portion 12~f o~ the screw- .
5 - .' " ' , ., i , ~
.
~: . . :
~74~
threaded member 128.
From a comparison of Figures 1 arJd 2 it will be appreciated that the arrangement of Fiyure 2 occupies less axial space in the cylinder head than that of Figure 1.
A modification of the above described arrangement is ; illustrated in Figure 3. In the embodiments of Figures 1 and 2, sealing between an end of the housing part 15, 115, and the step 13, 113 in the bore 11, 111 is effected by means of the sealing washer 13a, 113a. ~owever, this form of arrangement can be replaced by that shown in E'iy~lre 3, in which the end of the body part (referenced 150) is radiussed and engages the seat ~referenced 151) directly. The seat itself is of spherical or substantially spherical form and its radius of curvature is greater than the radius o~ the end of the body part, so that the body part and the seat can be mutually sealingly engaged.
In a m~dified arrangement tnot shown) the olive is omitted and the end of the fuel supply pipe 26, 126 is enlarged by flaring the wall thereof outwardly.
The constructions described obviate the need to provide two separate arrangements for securing the pipe to the housing ~ and for securing the device within the bore. ~s a result ;, there is an economy of parts and the axial length of the injec-l tion devicecan be made smaller.
.j~ .
l, ~30 ''~
~, .
~:
, .
~, - . . , : ~ . .
.
Claims (5)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A fuel injection arrangement for an internal combustion engine including a cylinder head having a bore therethrough comprising a fuel injection device located in said bore, the device including a housing having a seating thereon and a valve member slidable within the housing and co-operating with the seating to control the flow of fuel from the device in use; a fuel pipe in flow communication with the fuel injection device and having an enlarged end portion; and a retention member in screw threaded engagement with the cylinder head, the retention member and the housing having respective abutments thereon which engage axially opposed parts of the enlarged end portion of the fuel pipe so as to trap and deform the enlarged end portion therebetween to provide liquid type seals between said enlarged end portion and said retention member and housing respectively, the retention member also holding the fuel injection device in position in said bore.
2. An arrangement according to claim 1, in which the bore is provided with a step, the device being urged into engagement with said step by the retention member acting through the intermediary of the enlarged end portion of the pipe.
3. An arrangement according to claim 2, in which said retention member is provided with a head portion and a screw threaded shank portion, the abutment of said retention member being provided on the head portion and an end of the fuel injection device being accommodated within the shank portion.
4. An arrangement according to claim 2, in which said retention member is provided with a head portion and a screw threaded shank portion, the abutment of said retention member being provided at or adjacent an end of the shank portion remote from the head portion.
5. An arrangement according to claim 1, in which the enlarged end portion of the fuel pipe has the shape of an olive.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB52938/76A GB1593491A (en) | 1976-12-17 | 1976-12-17 | Fuel injection arrangements in an internal combustion engine cylinder head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1074196A true CA1074196A (en) | 1980-03-25 |
Family
ID=10465912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA292,551A Expired CA1074196A (en) | 1976-12-17 | 1977-12-07 | Fuel injection arrangement |
Country Status (19)
| Country | Link |
|---|---|
| JP (1) | JPS6025627B2 (en) |
| AR (1) | AR212491A1 (en) |
| AU (1) | AU3122277A (en) |
| BR (1) | BR7708316A (en) |
| CA (1) | CA1074196A (en) |
| CS (1) | CS200534B2 (en) |
| DD (1) | DD133986A5 (en) |
| DE (1) | DE2756257A1 (en) |
| ES (1) | ES465069A1 (en) |
| FR (1) | FR2374524A1 (en) |
| GB (1) | GB1593491A (en) |
| HU (1) | HU178043B (en) |
| IN (1) | IN148276B (en) |
| IT (1) | IT1089636B (en) |
| MX (1) | MX146483A (en) |
| PL (1) | PL115689B1 (en) |
| SU (1) | SU797607A3 (en) |
| TR (1) | TR20082A (en) |
| ZA (1) | ZA777159B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2826038A1 (en) * | 1978-06-14 | 1979-12-20 | Bosch Gmbh Robert | FUEL INJECTOR |
| JPS55151159A (en) * | 1979-05-14 | 1980-11-25 | Nissan Diesel Motor Co Ltd | Fuel injection nozzle for diesel engine |
| DE2943744A1 (en) * | 1979-10-30 | 1981-05-14 | Robert Bosch Gmbh, 7000 Stuttgart | FUEL INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES |
| JPS5710766A (en) * | 1980-06-24 | 1982-01-20 | Honda Motor Co Ltd | Setting up device for fuel injection nozzle |
| DE3105686A1 (en) * | 1981-02-17 | 1982-09-02 | Robert Bosch Gmbh, 7000 Stuttgart | "FUEL INJECTION NOZZLE" |
| JPS6241004U (en) * | 1985-04-01 | 1987-03-11 | ||
| JPH0438773Y2 (en) * | 1986-03-17 | 1992-09-10 | ||
| JPH0720974U (en) * | 1991-04-23 | 1995-04-18 | 株式会社徳安 | Earpick |
| US5499612A (en) * | 1994-10-03 | 1996-03-19 | Caterpillar Inc. | Dual-function clamping assembly adapted for a hydraulically-actuated fuel injector |
| DE19927145A1 (en) * | 1999-06-15 | 2000-12-28 | Bosch Gmbh Robert | High pressure connection for a fuel injection system for internal combustion engines |
| JP7388969B2 (en) | 2020-03-31 | 2023-11-29 | 株式会社神戸製鋼所 | Tandem gas shielded arc welding method and welding equipment |
-
1976
- 1976-12-17 GB GB52938/76A patent/GB1593491A/en not_active Expired
-
1977
- 1977-12-01 ZA ZA00777159A patent/ZA777159B/en unknown
- 1977-12-05 AU AU31222/77A patent/AU3122277A/en active Pending
- 1977-12-07 CA CA292,551A patent/CA1074196A/en not_active Expired
- 1977-12-08 IN IN1705/CAL/77A patent/IN148276B/en unknown
- 1977-12-13 IT IT30634/77A patent/IT1089636B/en active
- 1977-12-13 AR AR270348A patent/AR212491A1/en active
- 1977-12-14 ES ES465069A patent/ES465069A1/en not_active Expired
- 1977-12-14 BR BR7708316A patent/BR7708316A/en unknown
- 1977-12-15 HU HU77LU226A patent/HU178043B/en unknown
- 1977-12-15 TR TR20082A patent/TR20082A/en unknown
- 1977-12-15 FR FR7737915A patent/FR2374524A1/en active Granted
- 1977-12-16 DE DE19772756257 patent/DE2756257A1/en not_active Withdrawn
- 1977-12-16 JP JP52151619A patent/JPS6025627B2/en not_active Expired
- 1977-12-16 DD DD77202715A patent/DD133986A5/en unknown
- 1977-12-16 SU SU772556499A patent/SU797607A3/en active
- 1977-12-16 MX MX171778A patent/MX146483A/en unknown
- 1977-12-16 PL PL1977203034A patent/PL115689B1/en unknown
- 1977-12-16 CS CS778478A patent/CS200534B2/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| PL115689B1 (en) | 1981-04-30 |
| FR2374524B1 (en) | 1980-08-22 |
| CS200534B2 (en) | 1980-09-15 |
| GB1593491A (en) | 1981-07-15 |
| DD133986A5 (en) | 1979-01-31 |
| PL203034A1 (en) | 1978-06-19 |
| FR2374524A1 (en) | 1978-07-13 |
| JPS6025627B2 (en) | 1985-06-19 |
| TR20082A (en) | 1980-07-10 |
| BR7708316A (en) | 1978-07-25 |
| DE2756257A1 (en) | 1978-06-29 |
| SU797607A3 (en) | 1981-01-15 |
| MX146483A (en) | 1982-06-30 |
| HU178043B (en) | 1982-02-28 |
| ES465069A1 (en) | 1978-09-01 |
| IN148276B (en) | 1981-01-03 |
| AU3122277A (en) | 1979-06-14 |
| AR212491A1 (en) | 1978-07-14 |
| JPS5376221A (en) | 1978-07-06 |
| IT1089636B (en) | 1985-06-18 |
| ZA777159B (en) | 1978-09-27 |
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