CA1205503A - Destacking means for flat objects, such as letters - Google Patents
Destacking means for flat objects, such as lettersInfo
- Publication number
- CA1205503A CA1205503A CA000421713A CA421713A CA1205503A CA 1205503 A CA1205503 A CA 1205503A CA 000421713 A CA000421713 A CA 000421713A CA 421713 A CA421713 A CA 421713A CA 1205503 A CA1205503 A CA 1205503A
- Authority
- CA
- Canada
- Prior art keywords
- destacking
- objects
- face
- letters
- magazine
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H1/00—Supports or magazines for piles from which articles are to be separated
- B65H1/02—Supports or magazines for piles from which articles are to be separated adapted to support articles on edge
- B65H1/025—Supports or magazines for piles from which articles are to be separated adapted to support articles on edge with controlled positively-acting mechanical devices for advancing the pile to present the articles to the separating device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H3/00—Separating articles from piles
- B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
- B65H3/48—Air blast acting on edges of, or under, articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/20—Location in space
- B65H2511/21—Angle
- B65H2511/214—Inclination
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/19—Specific article or web
- B65H2701/1916—Envelopes and articles of mail
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
- Sorting Of Articles (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
The invention relates to a destacking means for flat objects, such as postal items or letters.
Such a destacking means positioned between a supply magazine and the destacking face comprises means ensuring a rearward inclination of letters appearing at the destacking head. It can also comprise means accentuating the separation between the letter being destacked and the letter immediate-ly fallowing it and a combination of detection means and selective control means for the members of the machine as a function of the parameters governing destacking (Fig. 5).
The invention relates to a destacking means for flat objects, such as postal items or letters.
Such a destacking means positioned between a supply magazine and the destacking face comprises means ensuring a rearward inclination of letters appearing at the destacking head. It can also comprise means accentuating the separation between the letter being destacked and the letter immediate-ly fallowing it and a combination of detection means and selective control means for the members of the machine as a function of the parameters governing destacking (Fig. 5).
Description
~205S~
DESTACKING MEANS FOR FLAT OBJECTS, SUCH AS LETTERS
BACKGROUND OF THE INVENTION
The present invention relates to a destacking means for flat objects, such as letters, or postal items.
A supply system for the sorting machine for postal items or letters essentially comprises a supply magazine acting as a buf~er store and presentation unit for a speeding up member and which serves to successively speed up each postal item or letter in a unitary manner, and finally a conveying device for advancing the letters in a unitary manner.
It has been found that as a result of certain constraints, such as a considerable widening of the range o~ characteristics of the items to be processed (beyond the standards in use), the known devices are unable to meet the required performance levels. For example re~erence can be made to the following constraints~ which have to be taken into consider-ation in the widening of the range:
- the processing of batches of letters having very di~ferent weights (from very light weights below 2g, to very heavy weights exceeding 60g);
25 - the processing of very porous or glossy postal items;
- the processing of postal items having geometrical characteristics altered by the actual production process (e.g. single sheet folded into two or three with a local seal);
- the processing of postal items in non-standard series.
- 3~
~Z,,0~ )3 As a result of these new constraints, the aforementioned known means often lead to inadequate performance levels.
Thus, the distribution devices able to sample in unitary manner and in the order in which they appear, the objects in a stack, pile or row for supplying them with a constant pitch (as opposed to systems with a constant spacing) e.g. to a process-ing installation only function satisfactorily if the position of the objects at the time of destacking is determined 'very precisely.
BRIEF SUMMARY OF THE INVENTION
This is the object of the present invention.
The invention more specifically relates to a destacking means for flat objects for ensuring the link between the supply magazine acting as a buffer store and as a presentation unit and a speeding up device, which serves to successively speed up in a unitary manner with a constant pitch each object for the introduction thereof into a conveying device serving to supply the objects in a unitary manner, wherein it comprises control means able to impart to the objects arriving from the supply magazine a rearward slope by an angle a with respect to the supplying direction, thus determining for each object a slope angle J which is kept constant until individually taken in charge by the destacking face.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention is described in greater detail hereinafter relative to non-limitative embodiments and the attached drawings, wherein show:
Figs. 1 diagrammatically the different means to 7 involved in the destacking means according to the invention.
~2i[)~3 Figs. 8 diagrammatically other operation defec-ts to 10 which can be obviated by the said means.
DETAILED DESCRIPTION_OF THE PREFERRED EMBODIMENTS
In order to ~acilitate understanding, the same members carry the same references in all the drawings.
Fig. 1 diagrammatically shows the position which has proved to be of an optimum nature and which must be -taken by the bases of the objects to be destacked before reaching the destacking face
DESTACKING MEANS FOR FLAT OBJECTS, SUCH AS LETTERS
BACKGROUND OF THE INVENTION
The present invention relates to a destacking means for flat objects, such as letters, or postal items.
A supply system for the sorting machine for postal items or letters essentially comprises a supply magazine acting as a buf~er store and presentation unit for a speeding up member and which serves to successively speed up each postal item or letter in a unitary manner, and finally a conveying device for advancing the letters in a unitary manner.
It has been found that as a result of certain constraints, such as a considerable widening of the range o~ characteristics of the items to be processed (beyond the standards in use), the known devices are unable to meet the required performance levels. For example re~erence can be made to the following constraints~ which have to be taken into consider-ation in the widening of the range:
- the processing of batches of letters having very di~ferent weights (from very light weights below 2g, to very heavy weights exceeding 60g);
25 - the processing of very porous or glossy postal items;
- the processing of postal items having geometrical characteristics altered by the actual production process (e.g. single sheet folded into two or three with a local seal);
- the processing of postal items in non-standard series.
- 3~
~Z,,0~ )3 As a result of these new constraints, the aforementioned known means often lead to inadequate performance levels.
Thus, the distribution devices able to sample in unitary manner and in the order in which they appear, the objects in a stack, pile or row for supplying them with a constant pitch (as opposed to systems with a constant spacing) e.g. to a process-ing installation only function satisfactorily if the position of the objects at the time of destacking is determined 'very precisely.
BRIEF SUMMARY OF THE INVENTION
This is the object of the present invention.
The invention more specifically relates to a destacking means for flat objects for ensuring the link between the supply magazine acting as a buffer store and as a presentation unit and a speeding up device, which serves to successively speed up in a unitary manner with a constant pitch each object for the introduction thereof into a conveying device serving to supply the objects in a unitary manner, wherein it comprises control means able to impart to the objects arriving from the supply magazine a rearward slope by an angle a with respect to the supplying direction, thus determining for each object a slope angle J which is kept constant until individually taken in charge by the destacking face.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention is described in greater detail hereinafter relative to non-limitative embodiments and the attached drawings, wherein show:
Figs. 1 diagrammatically the different means to 7 involved in the destacking means according to the invention.
~2i[)~3 Figs. 8 diagrammatically other operation defec-ts to 10 which can be obviated by the said means.
DETAILED DESCRIPTION_OF THE PREFERRED EMBODIMENTS
In order to ~acilitate understanding, the same members carry the same references in all the drawings.
Fig. 1 diagrammatically shows the position which has proved to be of an optimum nature and which must be -taken by the bases of the objects to be destacked before reaching the destacking face
2 of a not shown speeding up device. They must remain inclined by an angle ~ which, for each given application, must be kept constant until the letter in question is seized by the speeding up device.
Throughout the remainder of the description, the objects in question are flat postal items or letters 1. .
As is shown in Fig.2 in non-limitative manner, means 3 able to ensure the said slope of the letters prior to destacking can be constituted by a set of motorized belts 33 following the drive or displacement path for the letters from a downstream supply magazine (not shown) and which can be of the kype described in French Patent Application 2 382 387.
The groups of letters are inserted in such a device between pushing members displaced into the vicinity of the destacking means, where they are then retracted.
Fig. 3 shows such a pushing member at 5 just prior to its retraction. According to the invention the positioning of the bases of letters is improved with the aid of a blowing system 4 located at the rear of the bottom of the letOter positioned immediately 1~05~1D;3 following the action zone of the final pushing member 5. The arrows indicate the blowing direct-ion.
As shown in Fig. 4, the same result can be achieved by a pushing member 5, provided with inclining or sloping means making it possible to incline it by the previously defined angle ~ in the vicinity of the destacking face 2.
As shown in Fig. 5, a photoelectric cell C
is placed in position for detecting the presence of the base 9 of a letter, e.g. on motorized belts.
A further problem occurs at -this stage of the destacking process, namely the separation of the letter 8 taken in charge by the destacking face 2 immediately following letter 7. This separation is ensured by sucking letter 8 against the destacking face by orifices 12 and accentuated by means of a blowing system 6 positioned above the stack of letters supplied to the speeding up device. It comprises means for selecting letter 8 engaging with destacking face 2, prior to the speeding up thereof for the purpose of its displacement.
Such a speeding up device is diagrammatically shown inFig. 6. It essentially comprises the actual destacking face 2 having suction orifices 12 cooperating with a speeding up drum 11. According to the invention a detection means C2 is positioned as close as possible to drum 11. The function of the detection means will be explained hereinafter.
In order to improve the individual separation of letters from the top of the rearwardly inclined pile at the time at which suction takes effect through the moving aside of the preceding letter, the thickness of the letter to be sped up can be 1%~5,~S03 detected before speeding up takes place. For this purpose an image detection head 14 is placed in the manner shown in Fig. 7 on the path of the upper part of the letter for determining the thickness thereof. The information obtained then leads to an adjustment of the drive or displacement parameters.
The operation of a destacking means according to the invention is described hereinafter.
Initially an operator fills the spaces between the pushing members of the supply magazine with letters. When this operation is ended, the magazine is put into operation. As soon as a first pile of let-ters comes into the vicinity of destacking face 2, positive information is provided by detection means Cl. At this time the magazine is stopped and the set of motorized belts 33 is put into operation, as is optionally the first blowing means 4. As has been stated hereinbefore, the pushing member pushing the pile of letters ready to be destacked and detected by detection means Cl can also be brought into a rearwardly inclined position. This represent time To. The magazine is then stopped until the separation and suction of the letters by the speeding up device leads to cell Cl no longer being blacked out or occulted.
Contrary to what takes place in the known devices, the letter is then in an inclined position and is not pressed against the destacking face by the supply magazine. At time To + Tl, the suction box acting on the suction orifices 12 is put into operation, which has the effect of engaging the first letter for destacking against destacking face 2. The second detection means C2 detects the engagement of the first letter in the pile of letters. This , ~l2~5~3 represents time To + Tx. The upper blowing means 6 are then started up at time To + T2. As has been stated hereinbefore they have the function of only permitting the engagement of the single letter which is to be sped up with the aforemen-tioned destacking face. This time may or may not coincide with time To + Tx. The transition between the occulted state of cell C1 and the non-occulted state thereof is indicated by a control signal, which ensures the starting up again of the magazine and the commencement of a new cycle. Thus, for each application it is possible to bring about a selective control of the various detection and control means, optionally using timing means, so as to take account of the nature of the ob~ects to be destacked. The speeding up.of a 6 mm letter leads to a modification in the state of the stock of letters in the vicinity of the speeding up device in a manner which is very different from the case where the letter to be sped up has a thickness of several dozen mm.
Interpretation of the information coming from detection means C2 makes it possible to take account of this difference. It is also relatively standard practica for batches of post with equivalent characteristics to appear at the intake of a machine.
The repetitiveness of the information of the two detection means C1 and C2 permits an automatic adjustment of the destacking procedures to the category of post in question.
An incident may occur during operation. This is the case for example when one step is not filled at the time of destacking ~space between two pushing members 50, 51 - Fig. 8). Thus a capacitive cell can be provided for detecting the density of letters S,.S03 per space against the engagement face of the letters (A). The front finger 50 associated therewith is then stopped prior to retraction so as to prevent an exaggerated rearward inclination corresponding to a complete spreading over two s-teps (Fig. 9) of the letters (A). The following finger 51 then imparts thereto, during its advance, an unacceptable deformation (Fig. 10), which prevents engagement with the engagement face 2. Following this stoppage, a complete starting procedure takes place in the manner described hereinbefore.
The regulation actions by the means used in the present invention can therefore relate to the level and frequency of the upper air jet pulses, the timing of the putting into operation of the general supply of letters and the rotation speed of the supply belt for the bases of the letters to the destacking face, as well as the depression intensity of the speeding up drum.
As a result of the combination of the aforement-ioned features, a destacking means according to the invention has a maximum efficiency at a given rate.
It makes it possible to reduce the double take rate, which tends towards zero, which is a fundamental constraint for this type of application. By limiting desynchronization, it makes it unnecessary to use a complementary device at the machine intake.
The term rate is used to mean the number of letters sped up in the conveying device per unit of time. The efficiency of destacking corresponds to the number of letters correctly introduced into the conveying device, i.e. appearing in a unltary manner with correct positioning and desired synchronization compared with the number of letters which can be theoretically sped up.
Throughout the remainder of the description, the objects in question are flat postal items or letters 1. .
As is shown in Fig.2 in non-limitative manner, means 3 able to ensure the said slope of the letters prior to destacking can be constituted by a set of motorized belts 33 following the drive or displacement path for the letters from a downstream supply magazine (not shown) and which can be of the kype described in French Patent Application 2 382 387.
The groups of letters are inserted in such a device between pushing members displaced into the vicinity of the destacking means, where they are then retracted.
Fig. 3 shows such a pushing member at 5 just prior to its retraction. According to the invention the positioning of the bases of letters is improved with the aid of a blowing system 4 located at the rear of the bottom of the letOter positioned immediately 1~05~1D;3 following the action zone of the final pushing member 5. The arrows indicate the blowing direct-ion.
As shown in Fig. 4, the same result can be achieved by a pushing member 5, provided with inclining or sloping means making it possible to incline it by the previously defined angle ~ in the vicinity of the destacking face 2.
As shown in Fig. 5, a photoelectric cell C
is placed in position for detecting the presence of the base 9 of a letter, e.g. on motorized belts.
A further problem occurs at -this stage of the destacking process, namely the separation of the letter 8 taken in charge by the destacking face 2 immediately following letter 7. This separation is ensured by sucking letter 8 against the destacking face by orifices 12 and accentuated by means of a blowing system 6 positioned above the stack of letters supplied to the speeding up device. It comprises means for selecting letter 8 engaging with destacking face 2, prior to the speeding up thereof for the purpose of its displacement.
Such a speeding up device is diagrammatically shown inFig. 6. It essentially comprises the actual destacking face 2 having suction orifices 12 cooperating with a speeding up drum 11. According to the invention a detection means C2 is positioned as close as possible to drum 11. The function of the detection means will be explained hereinafter.
In order to improve the individual separation of letters from the top of the rearwardly inclined pile at the time at which suction takes effect through the moving aside of the preceding letter, the thickness of the letter to be sped up can be 1%~5,~S03 detected before speeding up takes place. For this purpose an image detection head 14 is placed in the manner shown in Fig. 7 on the path of the upper part of the letter for determining the thickness thereof. The information obtained then leads to an adjustment of the drive or displacement parameters.
The operation of a destacking means according to the invention is described hereinafter.
Initially an operator fills the spaces between the pushing members of the supply magazine with letters. When this operation is ended, the magazine is put into operation. As soon as a first pile of let-ters comes into the vicinity of destacking face 2, positive information is provided by detection means Cl. At this time the magazine is stopped and the set of motorized belts 33 is put into operation, as is optionally the first blowing means 4. As has been stated hereinbefore, the pushing member pushing the pile of letters ready to be destacked and detected by detection means Cl can also be brought into a rearwardly inclined position. This represent time To. The magazine is then stopped until the separation and suction of the letters by the speeding up device leads to cell Cl no longer being blacked out or occulted.
Contrary to what takes place in the known devices, the letter is then in an inclined position and is not pressed against the destacking face by the supply magazine. At time To + Tl, the suction box acting on the suction orifices 12 is put into operation, which has the effect of engaging the first letter for destacking against destacking face 2. The second detection means C2 detects the engagement of the first letter in the pile of letters. This , ~l2~5~3 represents time To + Tx. The upper blowing means 6 are then started up at time To + T2. As has been stated hereinbefore they have the function of only permitting the engagement of the single letter which is to be sped up with the aforemen-tioned destacking face. This time may or may not coincide with time To + Tx. The transition between the occulted state of cell C1 and the non-occulted state thereof is indicated by a control signal, which ensures the starting up again of the magazine and the commencement of a new cycle. Thus, for each application it is possible to bring about a selective control of the various detection and control means, optionally using timing means, so as to take account of the nature of the ob~ects to be destacked. The speeding up.of a 6 mm letter leads to a modification in the state of the stock of letters in the vicinity of the speeding up device in a manner which is very different from the case where the letter to be sped up has a thickness of several dozen mm.
Interpretation of the information coming from detection means C2 makes it possible to take account of this difference. It is also relatively standard practica for batches of post with equivalent characteristics to appear at the intake of a machine.
The repetitiveness of the information of the two detection means C1 and C2 permits an automatic adjustment of the destacking procedures to the category of post in question.
An incident may occur during operation. This is the case for example when one step is not filled at the time of destacking ~space between two pushing members 50, 51 - Fig. 8). Thus a capacitive cell can be provided for detecting the density of letters S,.S03 per space against the engagement face of the letters (A). The front finger 50 associated therewith is then stopped prior to retraction so as to prevent an exaggerated rearward inclination corresponding to a complete spreading over two s-teps (Fig. 9) of the letters (A). The following finger 51 then imparts thereto, during its advance, an unacceptable deformation (Fig. 10), which prevents engagement with the engagement face 2. Following this stoppage, a complete starting procedure takes place in the manner described hereinbefore.
The regulation actions by the means used in the present invention can therefore relate to the level and frequency of the upper air jet pulses, the timing of the putting into operation of the general supply of letters and the rotation speed of the supply belt for the bases of the letters to the destacking face, as well as the depression intensity of the speeding up drum.
As a result of the combination of the aforement-ioned features, a destacking means according to the invention has a maximum efficiency at a given rate.
It makes it possible to reduce the double take rate, which tends towards zero, which is a fundamental constraint for this type of application. By limiting desynchronization, it makes it unnecessary to use a complementary device at the machine intake.
The term rate is used to mean the number of letters sped up in the conveying device per unit of time. The efficiency of destacking corresponds to the number of letters correctly introduced into the conveying device, i.e. appearing in a unltary manner with correct positioning and desired synchronization compared with the number of letters which can be theoretically sped up.
Claims (5)
1. A destacking means for flat objects for ensuring the link between a supply magazine act-ing as a buffer store and as a presentation unit for said objects, and a conveying device to convey the objects in a unitary manner, comprising: a sucking destacking face located downstream of said supply magazine for retracting and successively speeding up the objects arriving from said magazine and for introducing said objects in said conveying device;
and means for inclining said objects so as to present said objects to said destacking face with the base thereof nearest to said face blowing means located above said magazine between said destacking face and said objects and oriented to oppose striking of said objects against said destacking face; first means for detecting the base of the objects upstream of the destacking face, said first means controlling said inclining means for the arrival of said base at said destacking face, said first means setting said destacking face in a sucking condition, and second means for detecting the striking of an object against said destacking face and for actuating said blowing means.
and means for inclining said objects so as to present said objects to said destacking face with the base thereof nearest to said face blowing means located above said magazine between said destacking face and said objects and oriented to oppose striking of said objects against said destacking face; first means for detecting the base of the objects upstream of the destacking face, said first means controlling said inclining means for the arrival of said base at said destacking face, said first means setting said destacking face in a sucking condition, and second means for detecting the striking of an object against said destacking face and for actuating said blowing means.
2. A destacking means according to claim 1, further comprising means for evaluating the thick-ness of an object taken in charge by said conveying device able to act on the speeding up of the destacked object.
3. A destacking means according to claim 1, further comprising selective control means actuated as a function of signals supplied by the first and second detecting means.
4. A destacking means according to claim 1, wherein said inclining means are constituted by a set of motorized belts.
5. A destacking means according to claim 1, wherein said inclining means comprise a lower blowing means.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8202794A FR2521962B1 (en) | 1982-02-19 | 1982-02-19 | FLAT OBJECT DEPLOYER SUCH AS POSTAL FOLD |
| FR8202794 | 1982-02-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1205503A true CA1205503A (en) | 1986-06-03 |
Family
ID=9271173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000421713A Expired CA1205503A (en) | 1982-02-19 | 1983-02-16 | Destacking means for flat objects, such as letters |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0087341B1 (en) |
| AU (1) | AU1164883A (en) |
| CA (1) | CA1205503A (en) |
| DE (1) | DE3376205D1 (en) |
| FR (1) | FR2521962B1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE105668T1 (en) * | 1989-03-17 | 1994-05-15 | Martin Guy | SEPARATING DEVICE FOR PLANE SHEETS USING A TURBULENCE BLOWING NOZZLE |
| FR2689038A1 (en) * | 1992-03-27 | 1993-10-01 | Cga Hbs | Device for arranging a pile of flat objects on edge toward an unloading head of an automatic sorting system and method for implementing this device. |
| IT1256935B (en) * | 1992-08-10 | 1995-12-27 | Vincenzo Priolo | SINGLE SORTING DEVICE FOR POSTAL OBJECTS. |
| JP2008273666A (en) * | 2007-04-26 | 2008-11-13 | Toshiba Corp | Paper sheet take-out device |
| FR2925474B1 (en) * | 2007-12-20 | 2009-11-27 | Solystic | DEVICE FOR DEPILING MULTI-MODE POSTAL SHIPMENTS |
| CN114476697B (en) * | 2022-01-28 | 2023-10-27 | 上海美诺福科技有限公司 | Sheet sample separating device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2361907A (en) * | 1942-08-08 | 1944-11-07 | Dexter Folder Co | Sheet feeding |
| BE554615A (en) * | 1954-08-23 | |||
| NL295216A (en) * | 1962-07-12 | 1900-01-01 | ||
| DE1217405B (en) * | 1964-04-18 | 1966-05-26 | Standard Elektrik Lorenz Ag | Device for peeling off stacked cards and similar objects at high speed |
| FR2124716A5 (en) * | 1972-01-07 | 1972-09-22 | Giavazzi Marco |
-
1982
- 1982-02-19 FR FR8202794A patent/FR2521962B1/en not_active Expired
-
1983
- 1983-02-04 EP EP19830400247 patent/EP0087341B1/en not_active Expired
- 1983-02-04 DE DE8383400247T patent/DE3376205D1/en not_active Expired
- 1983-02-16 CA CA000421713A patent/CA1205503A/en not_active Expired
- 1983-02-18 AU AU11648/83A patent/AU1164883A/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| FR2521962A1 (en) | 1983-08-26 |
| AU1164883A (en) | 1983-08-25 |
| DE3376205D1 (en) | 1988-05-11 |
| FR2521962B1 (en) | 1985-12-27 |
| EP0087341A3 (en) | 1985-04-10 |
| EP0087341A2 (en) | 1983-08-31 |
| EP0087341B1 (en) | 1988-04-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |