EP0057714B1 - Tirant - Google Patents
Tirant Download PDFInfo
- Publication number
- EP0057714B1 EP0057714B1 EP81902292A EP81902292A EP0057714B1 EP 0057714 B1 EP0057714 B1 EP 0057714B1 EP 81902292 A EP81902292 A EP 81902292A EP 81902292 A EP81902292 A EP 81902292A EP 0057714 B1 EP0057714 B1 EP 0057714B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shank
- sleeve
- tie rod
- rod according
- support members
- 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
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/80—Ground anchors
- E02D5/801—Ground anchors driven by screwing
Definitions
- the invention relates to an earth anchor with screw-in plate with a tapered at the foot end and at the head end a fastening device for loads to be loaded having hollow anchor shaft, on which a spreading foot is mounted between the screw-in plate and a stop at the head end, which has a sleeve that is displaceable on the anchor shaft, on which support members aligned radially to the anchor shaft are formed with the support surfaces facing the screw-in plate.
- Ground anchors serve as a replacement for strip or point foundations for the storage of e.g. B. loads or lightweight structures located on pallets.
- Known ground anchors are predominantly designed for tension anchoring. Pressure loads cannot be taken up or only to a small extent.
- there is the disadvantage in the known ground anchors that forces acting vertically to their longitudinal axis, such as. B. horizontally acting wind loads can not be absorbed, because then the ground anchor will tilt around the screw-in plate in the ground. For this reason, it is necessary to additionally secure objects at risk of wind loads supported on ground anchors by inclined supports or the like. However, this increases the assembly effort considerably.
- an earth anchor which serves to accommodate light loads such as mailboxes and has a screw-in plate and an expansion foot with triangular flat support members. Since the screw-in plate is provided with a large slope, this ground anchor is only suitable for absorbing relatively low vertical loads, since it shifts downwards into the ground with larger loads. In addition, the spreading foot is pressed into the soil disturbed by the screw-in plate, so that only small horizontal loads can be absorbed. Another disadvantage is that the spreading foot cannot be moved into the frost-proof area of the ground. When there is frost, there is therefore a risk that the spreading foot with the ground anchor will be pushed up again and become loose.
- the object of the invention is to design a ground anchor to be installed in the ground in a conventional manner in such a way that it is frost-proof to accommodate larger vertical and horizontal loads.
- the fastening devices on the ground anchor should also be designed to be adjustable in height for these loads.
- the object is achieved in that the support surfaces of the support members connected to a sleeve in a plane perpendicular to the central axis of the anchor shaft project radially above the screw-in plate and the fastening device is designed as a support plate which is displaceable coaxially to the anchor shaft.
- the ground anchor designed in this way is ideal for use on both solid and uneven soils such as fine gravel or sand.
- the ground anchor 1 shown in FIG. 1 a consists of an anchor shaft 2 with a beveled foot end 5. Above the foot end 5, a screw-shaped screw-in plate 3 is connected to the anchor shaft 2. A fastening device 6 is formed on the head end 4 of the anchor shaft 2. There is a stop 29 below the fastening device 6. Between the stop 29 and the screw-in plate 3 there is an expansion foot 15a which is displaceable on the anchor shaft 2 between the stop 29 and the screw-in plate 3.
- the fastening device 6 consists of a support plate 7 which is displaceable coaxially to the central axis 14 of the anchor shaft 2.
- a threaded sleeve 8 designed as a threaded nut is arranged on the head end 4, into which a threaded bolt 9 is screwed.
- the support plate 7 is fastened to the free end section 10 of the threaded bolt 9 (FIG. 1c). Openings 11 are formed in the support plate 7. Screws 12 are inserted through these openings 11, by means of which a carrier 13, a pallet or another load object is fastened on the support plate 7.
- two openings 27 are formed on the head end 4 of the anchor shaft 2 opposite one another, through which a bolt 28 is inserted as a stop 29.
- a special clamping piece can be used.
- This clamping piece can be designed, for example, as an elastic clamping ring which is fastened in the openings 27. If the bolt 28 is then passed through the clamping rings, these are resiliently on the bolt 28 and secure it against losing. It is also possible to use, for example, a safety chain instead of the clamping pieces, which is attached to the free end sections of the bolt 28.
- the expansion foot 15a consists of a sleeve 16 which is displaceably mounted on the anchor shaft 2 and on which four support members 17a are arranged radially to the anchor shaft 2 (FIG. 1b).
- the support members 17a are designed so that they protrude radially from the screw-in plate 3 in plan so that they can be introduced into undisturbed soil.
- the support surfaces 18a of the support members 17a are arranged in a plane perpendicular to the central axis 14 of the anchor shaft 2.
- an expansion foot 15b is shown, in which radially plate-shaped support members 17b are attached to the sleeve 16.
- pressure plates 34 are provided which are aligned parallel to the anchor shaft.
- the pressure plates 34 are preferably arranged at right angles to the support members 17b, as shown by broken lines in FIG. 2a.
- the Z-shaped expansion foot 15c shown in FIG. 2b consists of two plate-shaped support members 17b which are fastened to one another in one plane on the sleeve 16.
- the pressure plates 34 are arranged opposite one another at right angles to these.
- the support surfaces 18b are likewise arranged in a plane which is oriented perpendicularly to the anchor shaft 2 when it is pushed onto the anchor shaft 2.
- the spreading feet 15b, 15c protrude radially from the screw-in plate 3 on the anchor shaft 2 in plan.
- FIGS. 3a to 3d The installation and function of the ground anchor 1 is illustrated with the aid of FIGS. 3a to 3d.
- the support plate 7 is detached from the head end 4 of the ground anchor 1 and the expansion foot - in this case an expansion foot 15a - is pushed onto the anchor shaft 2.
- the threaded bolt 9 with the support plate 7 is screwed back into the threaded sleeve 8.
- the anchor shaft 2 of the ground anchor 1 is placed on the ground of the intended installation site, the head end 5 being slightly pressed manually into the ground 30.
- the spreading foot 15a the support members 17a of which also protrude radially in plan from the screw-in plate 3, is pressed with its support surfaces 18a onto the soil 30 (FIG. 3a).
- the anchor shaft 2 is then rotated by means of a wrench or the like attached to the threaded sleeve 8, the anchor shaft 2 extending through the screw-in plate 3 into the ground (FIG. 3b).
- the stop 29 rests on the sleeve 16 of the expansion foot 15a and the anchor shaft 2 is rotated further into the soil, the expansion foot 15a is also pulled into the soil 30 (FIG. 3c).
- the spreading foot 15a is anchored sufficiently firmly in the ground 30, the screwing of the anchor shaft 2 into the ground 4 is ended (FIG. 3d).
- An earth anchor with an expansion foot 15b or 15c is installed in the same way.
- ground anchor with horizontal forces from wind loads and. The like. Tilting around the screw-in plate 3 is prevented by the spreading foot 15a, 15b, 15c braced against the ground 30 being supported on the ground by means of its support surfaces 18a, 18b and optionally the pressure plates 34.
- the ground anchor thus enables both vertical and horizontal loads to be absorbed.
- An alignment of the height level of the support plate 7 is possible by simply turning the threaded bolt 9. In this way, different installation depths of different ground anchors or a terrain gradient can be compensated.
- an earth anchor 1a as shown in FIG. 4.
- an external thread 32 is formed on the anchor shaft 2, on which the sleeve 16 of the expansion foot is slidably mounted.
- Any of the above described embodiments of an expansion foot 15a, 15b, 15c can be used.
- the nut 31 can be rotated on the head surface 33 of the sleeve 16 independently of the actuation of the anchor shaft 2.
- the ground anchor 1a requires less effort when screwing into the ground 30, since the anchor shaft 2 is first screwed in and only then is the expansion foot pressed into the ground 30 by means of the nut 31.
- the separate actuation of anchor shaft 2 and expansion foot via the nut 31 also facilitates the alignment of the ground anchor 1a.
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Claims (10)
- - 1. Dispositif d'ancrage dans le sol à plateau de vissage, comportant un montant d'ancrage creux (2), effilé à l'extrémité inférieure et présentant à l'extrémité supérieure un dispositif de fixation (6) pour des charges qu'il doit supporter, montant d'ancrage (2) sur lequel est montée une base d'étaiement (15a, 15b) pouvant être déplacée entre le plateau de vissage (3) et une butée (29) prévue à l'extrémité supérieure du montant d'ancrage, la base d'étaiement (15a, 15b) comportant un manchon (16) pouvant être déplacé sur le montant d'ancrage, manchon sur lequel sont prévus des éléments d'appui (17a, 17b) qui suivent une direction radiale par rapport à celle du montant d'ancrage et dont les faces d'appui sont tournées vers le plateau de vissage (3) caractérisé en ce que les faces d'appui (18a, 18b) des éléments d'appui (17a, 17b) qui, sont reliés à un manchon (16) dépassent dans le sens radial - l'ensemble étant considéré vu en plan - le plateau de vissage (3), dans un plan perpendiculaire à l'axe médian (14) du montant d'ancrage (2), et en ce que le dispositif de fixation est prévu sous la forme d'une plaque portante (7) pouvant être déplacée dans le sens de l'axe du montant d'ancrage (2).
- 2. Dispositif d'ancrage dans le sol suivant la revendication 1, caractérisé en ce qu'aux parties d'extrémité des éléments d'appui (17b) qui sont les plus éloignées du manchon (16), il est prévu des plaques de pression (34) suivant une direction parallèle à celle du montant d'ancrage (2) et dirigées à angle droit par rapport aux éléments d'appui (17b).
- 3. Dispositif d'ancrage dans le sol suivant la revendication 2, caractérisé en ce que sur le manchon (16) il est prévu deux éléments d'appui se présentant sous forme de plaques (17b) qui sont décalés de 180° l'un par rapport à L'autre, éléments d'appui (17b) aux parties d'extrémité libres desquels il est prévu, à angle droit par rapport aux éléments d'appui (17b) des plaques de pression (34) qui sont dirigées en sens opposés l'une par rapport à l'autre.
- 4. Dispositif d'ancrage dans le sol suivant les revendications 1 à 3, caractérisé en ce qu'à l'extrémité supérieure (4) du Montant d'ancrage (2), il est prévu un manchon taraudé (8) dont le diamètre externe maximum est égal ou inférieur au diamètre externe du montant d'ancrage (2) et dans lequel est posée une tige filetée (9) à la partie d'extrémité libre (10) de laquelle est prévue la plaque portante (7).
- 5. Dispositif d'ancrage dans le sol suivant les revendications 1 à 4, caractérisé en ce que la face d'enveloppe externe du manchon taraudé (8) présente des parties planes destinées à permettre la pose d'un outil.
- 6. Dispositif d'ancrage dans le sol suivant la revendication 5, caractérisé en ce que le manchon taraudé (8) se présente sous la forme d'un écrou qui est fixé sur le montant d'ancrage (2).
- 7. Dispositif d'ancrage dans le sol suivant les revendications 1 à 6, caractérisé en ce que le montant d'ancrage (2) est muni d'un filet externe (32), sur lequel est posé, de façon à pouvoir être déplacé, un écrou (31), qui peut être placé en contact avec la face supérieure (33) du manchon (16) de la base d'étaiement (15a, 15b, ou 15c).
- 8. Dispositif d'ancrage dans le sol suivant la revendication 7, caractérisé en ce que le diamètre externe du manchon taraudé (8) est égal ou inférieur au diamètre interne du filet externe (32).
- 9. Dispositif d'ancrage dans le sol suivant les revendications 1 à 6 caractérisé en ce que dans le montant d'ancrage (2), dans la zone de l'extrémité supérieure (4) de celui-ci, il est prévu deux ouvertures (27) qui sont opposées l'une à l'autre et qui sont de même forme et de même grandeur, dans lesquelles est montée, de façon à pouvoir en être enlevée une broche (28) pouvant être fixée au montant d'ancrage (2), au moyen d'une pièce de serrage, broche qui est destinée à former la butée pour la base d'étaiement (15a, 15b ou 15c).
- 10. Dispositif d'ancrage dans le sol suivant la revendication 9, caractérisé en ce que la pièce de serrage se présente sous la forme d'une bague de serrage élastique qui est fixée dans les ouvertures (27).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19803030634 DE3030634A1 (de) | 1980-08-13 | 1980-08-13 | Erdanker |
| DE3030634 | 1980-08-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0057714A1 EP0057714A1 (fr) | 1982-08-18 |
| EP0057714B1 true EP0057714B1 (fr) | 1985-05-15 |
Family
ID=6109546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP81902292A Expired EP0057714B1 (fr) | 1980-08-13 | 1981-08-13 | Tirant |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4471588A (fr) |
| EP (1) | EP0057714B1 (fr) |
| BE (1) | BE889964A (fr) |
| DE (1) | DE3030634A1 (fr) |
| WO (1) | WO1982000672A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007054169A1 (de) * | 2007-11-12 | 2009-05-20 | Dr. Pecher Ag | Vorrichtung zur Auftriebs- und Lagesicherung für Bauelemente |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4716508A (en) * | 1985-10-28 | 1987-12-29 | Kramer John F | Outdoor lighting pedestal |
| FR2626302A1 (fr) * | 1988-01-21 | 1989-07-28 | Amaragri Sarl | Dispositif d'ancrage |
| US4833846A (en) * | 1988-02-08 | 1989-05-30 | Mcfeetors James | Ground anchor system for supporting an above ground structure |
| US5148641A (en) * | 1991-06-21 | 1992-09-22 | Berntsen International, Inc. | Finned sleeve for driven type survey monuments |
| US5689918A (en) * | 1996-09-10 | 1997-11-25 | Johnson; Paul | Sign post stabilizer |
| US5921035A (en) * | 1996-10-29 | 1999-07-13 | Kempf; Brian J. | Lockable screw post apparatus |
| NZ503878A (en) * | 1997-09-18 | 2000-09-29 | Steel Foundations Technology P | Screw pile anchor |
| US6352391B1 (en) | 1999-12-14 | 2002-03-05 | Robert L. Jones | Piering device having a threaded shaft and helical plate |
| US6817810B2 (en) | 2002-12-03 | 2004-11-16 | Robert L. Jones | Piering device with adjustable helical plate |
| US6682267B1 (en) | 2002-12-03 | 2004-01-27 | Robert L. Jones | Piering device with adjustable helical plate |
| AU2003900482A0 (en) * | 2003-02-05 | 2003-02-20 | Ian Matear Stuart | Post anchor |
| US7037045B2 (en) | 2003-10-06 | 2006-05-02 | Jones Robert L | Modular tubular helical piering system |
| WO2005098165A1 (fr) * | 2004-04-08 | 2005-10-20 | Hong Kong Fiberglass Technology Limited | Barres et systeme instrumentes |
| US20080308780A1 (en) * | 2007-04-09 | 2008-12-18 | Sloan Security Fencing, Inc. | Security fence system |
| CA2849099A1 (fr) * | 2011-09-22 | 2013-03-28 | Shaner Industries, Llc | Appareil et procede pour fondations |
| AU2013211562A1 (en) * | 2012-02-21 | 2013-09-05 | Graeme Thitchener | A foundation assembly |
| AT516754B1 (de) * | 2015-01-15 | 2016-08-15 | Bernhard Jecel | Bodenanker mit einer Halterung zur Aufnahme einer Last |
| US10301072B1 (en) * | 2015-12-17 | 2019-05-28 | Robert L. Dent | Garden hose security device |
| US11306457B2 (en) * | 2020-06-03 | 2022-04-19 | Jason M. Pickel | Swimming pool cover tie-down anchoring system |
| US11414827B2 (en) * | 2020-09-14 | 2022-08-16 | Array Technologies, Inc. | Anchor for support structure |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1373560A (en) * | 1917-06-22 | 1921-04-05 | William A Holland | Fencepost |
| US1606146A (en) * | 1924-01-14 | 1926-11-09 | Elmer K Cole | Earth anchor device |
| US2395033A (en) * | 1945-05-16 | 1946-02-19 | Eric A Black | Anchorage |
| US3011597A (en) * | 1958-04-21 | 1961-12-05 | William H Galloway | Supporting post |
| US3011598A (en) * | 1958-04-21 | 1961-12-05 | William H Galloway | Supporting post |
| GB866244A (en) * | 1958-08-14 | 1961-04-26 | Vincent Esme Vincent | Improved foundation pile for a building |
| BE596206A (fr) * | 1959-10-23 | 1961-02-15 | Paul Niederwemmer | Pieu, poteau ou montant destiné à être dressé dans le sol, en particulier poteau d'enceinte ou de clôture. |
| CH386670A (fr) * | 1962-12-05 | 1965-01-15 | Gachoud Albert | Support amovible, notamment pour parasol, utilisable dans un terrain non compact |
| DE1484565C3 (de) * | 1964-04-30 | 1975-12-04 | Schwaebische Huettenwerke Gmbh, 7083 Wasseralfingen | Erdanker |
| GB1098266A (en) * | 1965-09-28 | 1968-01-10 | William Edmund Waite | Improvements in or relating to ground anchors |
| FR1499940A (fr) * | 1966-04-22 | 1967-11-03 | Dispositif de soutènement des parois rocheuses | |
| FR2112838A5 (fr) * | 1970-11-04 | 1972-06-23 | Trochet Andre | |
| US3841032A (en) * | 1972-05-17 | 1974-10-15 | Chance Co Ab | Article and screw anchor-supported, load-bearing pad therefor |
| SU717221A1 (ru) * | 1977-08-03 | 1980-02-25 | Институт Торфа Ан Белорусской Сср | Винтовой анкер |
| FR2422793A1 (fr) * | 1978-04-10 | 1979-11-09 | Moraly Paul | Cheville destinee a la fixation dans le sol de poteaux ou piquets et dispositif servant a l'enfoncement de cette cheville |
-
1980
- 1980-08-13 DE DE19803030634 patent/DE3030634A1/de not_active Withdrawn
-
1981
- 1981-08-13 WO PCT/DE1981/000122 patent/WO1982000672A1/fr not_active Ceased
- 1981-08-13 US US06/369,019 patent/US4471588A/en not_active Expired - Fee Related
- 1981-08-13 BE BE0/205665A patent/BE889964A/fr not_active IP Right Cessation
- 1981-08-13 EP EP81902292A patent/EP0057714B1/fr not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007054169A1 (de) * | 2007-11-12 | 2009-05-20 | Dr. Pecher Ag | Vorrichtung zur Auftriebs- und Lagesicherung für Bauelemente |
| DE102007054169B4 (de) * | 2007-11-12 | 2010-01-28 | Dr. Pecher Ag | Vorrichtung zur Auftriebs- und Lagesicherung für Bauelemente |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1982000672A1 (fr) | 1982-03-04 |
| US4471588A (en) | 1984-09-18 |
| BE889964A (fr) | 1981-12-01 |
| EP0057714A1 (fr) | 1982-08-18 |
| DE3030634A1 (de) | 1982-03-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0057714B1 (fr) | Tirant | |
| EP0014426B1 (fr) | Ancre de roche | |
| DE69314240T2 (de) | Entfernbarer Erdanker | |
| DE3117547A1 (de) | Vorrichtung zur halterung von verkleidungsplatten u.dgl. an bauwerksteilen | |
| DE202018103518U1 (de) | Vorrichtung zur Befestigung eines Aufbaus, insbesondere eines stab-, pfosten- oder rohrförmigen Gegenstandes | |
| DE102009056332A1 (de) | Verbindungselement für Stützen | |
| DE69032252T2 (de) | Verankerung und befestigungsverfahren durch in den boden getriebene seitenstützen | |
| DE202009018729U1 (de) | Bohrfundament mit zylindrischem Grundkörper | |
| DE8518438U1 (de) | Vorrichtung zur Halterung einer Stange im Boden | |
| DE3009167C2 (fr) | ||
| DE102010009140B4 (de) | System zur Bodenverankerung von Aufbauten | |
| EP3901375B1 (fr) | Agencement d'appui | |
| DE2236377A1 (de) | Verfahren zur herstellung einer bodenverankerung, insbesondere fuer baukonstruktionen, pfeiler, masten und pfosten, und gemaess dem verfahren hergestellte bodenverankerung | |
| AT395883B (de) | Vorrichtung zum befestigen eines kragbalkens | |
| EP0542692A1 (fr) | Dispositif pour l'ancrage d'éléments de construction dans le sol | |
| DE102016204528B4 (de) | Vorrichtung und System zur Verankerung von Aufbauten im Erdboden | |
| DE10161426A1 (de) | Verankerung für verspannte Konstruktionen | |
| DE8021679U1 (de) | Erdanker | |
| DE102012004350A1 (de) | Befestigung einer Monumentplatte auf einem Fundament | |
| DE4128459C1 (en) | Method for repairing building wall cladding - involves installing fixing ,prior to pouring of material, for removal after hardening | |
| EP1182309B1 (fr) | Pied pour poteaux | |
| DE102017127941B4 (de) | Anordnung zur betonlosen Befestigung rohrförmiger Aufbauten | |
| DE3503186C2 (fr) | ||
| DE3128831A1 (de) | Schalung | |
| EP0754804A1 (fr) | Barrage pour la protection contre les crues |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 19820510 |
|
| AK | Designated contracting states |
Designated state(s): FR GB NL |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Designated state(s): FR GB NL |
|
| ET | Fr: translation filed | ||
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19850831 Year of fee payment: 5 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Effective date: 19870301 |
|
| NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee | ||
| GBPC | Gb: european patent ceased through non-payment of renewal fee | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19870430 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19881121 |