EP0894915A1 - Concrete supply arm with articulated sections - Google Patents
Concrete supply arm with articulated sections Download PDFInfo
- Publication number
- EP0894915A1 EP0894915A1 EP98101317A EP98101317A EP0894915A1 EP 0894915 A1 EP0894915 A1 EP 0894915A1 EP 98101317 A EP98101317 A EP 98101317A EP 98101317 A EP98101317 A EP 98101317A EP 0894915 A1 EP0894915 A1 EP 0894915A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- arm
- sections
- actuator
- section
- hydraulic motor
- 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.)
- Withdrawn
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/04—Devices for both conveying and distributing
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/04—Devices for both conveying and distributing
- E04G21/0418—Devices for both conveying and distributing with distribution hose
- E04G21/0436—Devices for both conveying and distributing with distribution hose on a mobile support, e.g. truck
Definitions
- the present invention relates to concrete supply arms - in particular arms mounted on vehicle-transported concrete pumps - having several sections and articulating joints between said sections.
- the present invention considers and solves these problems by providing a concrete supply arm - to be mounted in particular on vehicle-transported concrete pumps - having several sections and articulating joints between said sections, characterized in that the relative movement of the sections is performed, in correspondence of at least some of the articulating joints of the arm, by means of actuator mechanisms consisting of a worm gear actuated by a hydraulic motor.
- said actuators also comprise a locking brake.
- the relative movement of the sections is performed by means of actuator mechanisms consisting of a worm gear actuated by a hydraulic motor only at the articulating joints close to the delivery end of the arm.
- the angular velocity at which the relative movement of the sections takes place may be kept constant, without difficulty, over the entire amplitude of the relative angular displacements and the latter may also be much greater than 280°, with obvious advantages for the operators and improvement in the quality of the work.
- Fig. 1 shows a schematic view of the construction of an articulation or articulating joint between two end sections of a concrete supply arm according to the prior art: the two sections 1 and 2 are connected by a kinematic mechanism comprising two connecting rods 3 and 4 which are pivotably hinged at 5, 6 and 7 to the two sections 1 and 2 and to one another and a double-acting hydraulic cylinder-piston unit 8, the cylinder of which is pivotably hinged at the closed end at 9 to a lug 1A of the section 1 and the piston of which is pivotably hinged at 10 with its outer end to the connecting rod 3, so as to control the movement of the section 2 with respect to the section 1.
- a kinematic mechanism comprising two connecting rods 3 and 4 which are pivotably hinged at 5, 6 and 7 to the two sections 1 and 2 and to one another and a double-acting hydraulic cylinder-piston unit 8, the cylinder of which is pivotably hinged at the closed end at 9 to a lug 1A of the section 1 and the piston of which is
- the maximum angle by which the section 2 is able to be rotated with respect to the section 1 does not exceed 280° (it is equivalent to about 270°), while the angular velocities at which the sections of the arm may be moved are not constant, but continuously variable, since the angles of relative movement of the sections are not proportional to the stroke of the cylinder.
- an internal actuator 13 in line with both the sections 11 and 12 of the arm, is used.
- the actuator comprises a worm gear consisting of a worm screw housed in a casing 14 and of a wheel in engagement with said screw, housed inside a casing 15, the latter being located in a special seat 16 formed at the end of the section 11 of the arm.
- the casing 14 also houses a hydraulic motor which - suitably energised - causes rotation of the the worm screw of the actuator and produces the rotations, in either direction, of the associated wheel, moving the section 12 with respect to the section 11.
- the actuator also comprises preferably parking brake means so as to lock as securely as possible the two sections 11 and 12 in the desired position.
- the actuator 13 is again internal and in line with both the sections, but the rest position of the latter, which in the preceding case consisted in the elements resting on top of each other (section 12 folded underneath the section 11), in this case consists in the elements being aligned with each other, with the section 12 which is at rest being arranged aligned as a continuation of the section 11.
- the actuator 13 is again internal, but is in line with only one of the sections of the arm to be moved relative to one another, for example with the section 11.
- an actuator 23 which is located outside both the sections 21 and 22 of the arm is used.
- the actuator comprises a worm screw housed in a casing 24 and a wheel in engagement with said screw, housed in a casing 25.
- the casing 24 also houses a hydraulic motor which - suitably energised - causes rotation of the worm screw of the actuator and produces rotations, in either direction, of the associated wheel, moving the section 22 with respect to the section 21.
- the actuator is arranged alongside the ends of the sections 21 and 22 which are articulated with one another and is connected to the section 21 by an anti-torsional bar 21A and to the section 22 by the output shaft moved by the wheel housed inside the casing 25.
- the actuator preferably comprises locking brake means, so as to lock as securely as possible the two sections 21 and 22 in the desired position.
- locking brake means so as to lock as securely as possible the two sections 21 and 22 in the desired position.
- Fig. 10 illustrates a possible construction of an actuator 30 to be applied to any one of the embodiments according to Figs. 2 and 9 of the concrete supply arm according to the invention.
- the actuator illustrated comprises, inside a casing 31 to be associated with the arm by means of the lug 31A, a transmission consisting of a worm screw 32 and of a wheel 33 housed respectively in the parts 34 and 35 of the casing 31, with which there are also associated an orbital hydraulic motor 36, which causes rotation, whenever suitably energised, of the worm screw 32 and a lamellar brake 37 intended to lock in the desired position the shaft of the screw 32 and hence the two sections of the arm on the articulating joint of which the actuator 30 is mounted.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Manipulator (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Reciprocating Pumps (AREA)
- Jib Cranes (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Braking Arrangements (AREA)
Abstract
Description
- The present invention relates to concrete supply arms - in particular arms mounted on vehicle-transported concrete pumps - having several sections and articulating joints between said sections.
- Various types of multiple-section concrete supply arms are already well known, said arms being of the kind in which the relative movement of the sections is performed, in correspondence of the articulating joints, by means of kinematic mechanisms with articulated rods connected to the sections and double-acting hydraulic cylinders controlling them.
- These constructions, however, have the drawback that the angular velocities at which the arm sections are moved are not constant (the angles of relative movement of the sections are not proportional to the stroke of the cylinder) and the significant limitation that, even when using complicated kinematic mechanisms, the angle of maximum relative rotation of the sections is generally not greater than 280°.
- It can be easily understood how important it is to avoid the abovementioned drawback and limitation of the known constructions, in order to achieve greater operational efficiency and safety and have a greater degree of manoeuvrability and versatility during use of the concrete supply arms, in particular along the sections and at the articulating joints closest to the delivery end of the arms themselves.
- The present invention considers and solves these problems by providing a concrete supply arm - to be mounted in particular on vehicle-transported concrete pumps - having several sections and articulating joints between said sections, characterized in that the relative movement of the sections is performed, in correspondence of at least some of the articulating joints of the arm, by means of actuator mechanisms consisting of a worm gear actuated by a hydraulic motor.
- Preferably said actuators also comprise a locking brake.
- Conveniently in the arm according to the invention the relative movement of the sections is performed by means of actuator mechanisms consisting of a worm gear actuated by a hydraulic motor only at the articulating joints close to the delivery end of the arm.
- With arms constructed in this manner, the angular velocity at which the relative movement of the sections takes place may be kept constant, without difficulty, over the entire amplitude of the relative angular displacements and the latter may also be much greater than 280°, with obvious advantages for the operators and improvement in the quality of the work.
- The invention is now described in greater detail with reference to the accompanying drawings which relate to some preferred embodiments of the arm according to the invention as defined above and in which:
- Fig. 1 is a schematic view of the articulation between two end sections of a concrete supply arm according to the prior art;
- Figs. 2 and 3 are two schematic views - a side view and a plan view - of an articulating joint between two sections of a concrete supply arm equipped, according to a first embodiment of the invention, with an internal actuator;
- Figs. 4 and 5 are two similar schematic views of a different embodiment of the solution according to Figs. 2 and 3;
- Figs. 6 and 7 are two similar schematic views of a further embodiment of the solution according to Figs. 2 and 3;
- Figs. 8 and 9 are two schematic views - a side view and a plan view - of an articulating joint between two sections of a concrete supply arm equipped, according to another embodiment of the invention, with an external actuator; and
- Fig. 10 shows in detail a sectional view of a possible construction of one of the actuators applied to the embodiments of Figs. 2 to 9 of the invention.
-
- With reference to the drawings, Fig. 1 shows a schematic view of the construction of an articulation or articulating joint between two end sections of a concrete supply arm according to the prior art: the two
sections 1 and 2 are connected by a kinematic mechanism comprising two connectingrods 3 and 4 which are pivotably hinged at 5, 6 and 7 to the twosections 1 and 2 and to one another and a double-acting hydraulic cylinder-piston unit 8, the cylinder of which is pivotably hinged at the closed end at 9 to alug 1A of the section 1 and the piston of which is pivotably hinged at 10 with its outer end to the connectingrod 3, so as to control the movement of thesection 2 with respect to the section 1. It is obvious from this figure that the maximum angle by which thesection 2 is able to be rotated with respect to the section 1 does not exceed 280° (it is equivalent to about 270°), while the angular velocities at which the sections of the arm may be moved are not constant, but continuously variable, since the angles of relative movement of the sections are not proportional to the stroke of the cylinder. - According to the invention, these drawbacks - which result, as already mentioned, in the poor operational efficiency and safety and in particular in a degree of manoeuvrability and versatility far inferior to that which is desirable in the use of the concrete supply arms - are eliminated by performing the relative movement of the sections, in correspondence of at least some of the articulating joints of the arm, by means of actuator mechanisms consisting of a worm gear actuated by a hydraulic motor and applied in various ways, as illustrated in Figs. 2 to 10.
- In the embodiment according to Figs. 2 and 3 of the invention, an
internal actuator 13, in line with both thesections casing 14 and of a wheel in engagement with said screw, housed inside acasing 15, the latter being located in aspecial seat 16 formed at the end of thesection 11 of the arm. Thecasing 14 also houses a hydraulic motor which - suitably energised - causes rotation of the the worm screw of the actuator and produces the rotations, in either direction, of the associated wheel, moving thesection 12 with respect to thesection 11. The actuator also comprises preferably parking brake means so as to lock as securely as possible the twosections section 12 with respect to thesection 11 which is far greater than 280° and it is obvious that, by using theactuator 13, it is possible to achieve a constant angular velocity during the movement. - In the embodiment according to Figs. 4 and 5, the
actuator 13 is again internal and in line with both the sections, but the rest position of the latter, which in the preceding case consisted in the elements resting on top of each other (section 12 folded underneath the section 11), in this case consists in the elements being aligned with each other, with thesection 12 which is at rest being arranged aligned as a continuation of thesection 11. - In the embodiment according to Figs. 6 and 7, on the other hand, the
actuator 13 is again internal, but is in line with only one of the sections of the arm to be moved relative to one another, for example with thesection 11. With this construction it is possible to obtain a continuous rotary movement of thesection 12 with respect to thesection 11 and the locking of the former with respect to the latter in any position over the entire angle of 360°. - In the embodiment according to Figs. 8 and 9 of the invention, an
actuator 23 which is located outside both thesections casing 24 and a wheel in engagement with said screw, housed in acasing 25. Thecasing 24 also houses a hydraulic motor which - suitably energised - causes rotation of the worm screw of the actuator and produces rotations, in either direction, of the associated wheel, moving thesection 22 with respect to thesection 21. The actuator is arranged alongside the ends of thesections section 21 by ananti-torsional bar 21A and to thesection 22 by the output shaft moved by the wheel housed inside thecasing 25. In this case, also, the actuator preferably comprises locking brake means, so as to lock as securely as possible the twosections section 22 with respect to thesection 21 which is far greater than 280° with a constant angular-velocity movement. - Fig. 10 illustrates a possible construction of an
actuator 30 to be applied to any one of the embodiments according to Figs. 2 and 9 of the concrete supply arm according to the invention. The actuator illustrated comprises, inside a casing 31 to be associated with the arm by means of thelug 31A, a transmission consisting of aworm screw 32 and of awheel 33 housed respectively in theparts hydraulic motor 36, which causes rotation, whenever suitably energised, of theworm screw 32 and alamellar brake 37 intended to lock in the desired position the shaft of thescrew 32 and hence the two sections of the arm on the articulating joint of which theactuator 30 is mounted. - It is understood that the construction of the concrete supply arm according to the invention may differ from those described and illustrated. In particular different actuators may be used, being differently driven or differently arranged with respect to that described, without thereby departing from the protective scope of the invention.
Claims (6)
- Concrete supply arm - to be mounted in particular on vehicle-transported concrete pumps - having several sections and articulating joints between said sections, characterized in that the relative movement of the sections is performed, in correspondence of at least some of the articulating joints of the arm, by means of actuator mechanisms consisting of a worm gear actuated by a hydraulic motor.
- Arm as claimed in Claim 1, in which said actuators also comprise a locking brake.
- Arm as claimed in Claims 1 and 2, in which said locking brake is a lamellar brake associated with the actuator mechanism.
- Arm as claimed in Claims 1 to 3, in which said hydraulic motor is an orbital motor.
- Arm as claimed in Claims 1 to 4, in which the relative movement of the sections is performed by means of actuator mechanisms consisting of a worm gear actuated by a hydraulic motor only in correspondence of the articulating joints close to the delivery end of the arm.
- Arm as claimed in Claim 3, in which the relative movement of the sections is performed by means of actuator mechanisms consisting of a worm gear actuated by a hydraulic motor only in correspondence of the last articulating joint close to the delivery end of the arm.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI971835 | 1997-07-31 | ||
IT97MI001835A IT1293518B1 (en) | 1997-07-31 | 1997-07-31 | ARM WITH MULTIPLE JOINTS FOR THE DISTRIBUTION OF CONCRETE |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0894915A1 true EP0894915A1 (en) | 1999-02-03 |
Family
ID=11377687
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98101317A Withdrawn EP0894915A1 (en) | 1997-07-31 | 1998-01-26 | Concrete supply arm with articulated sections |
EP98941399A Expired - Lifetime EP1002172B1 (en) | 1997-07-31 | 1998-07-22 | Concrete supply arm with articulated sections |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98941399A Expired - Lifetime EP1002172B1 (en) | 1997-07-31 | 1998-07-22 | Concrete supply arm with articulated sections |
Country Status (17)
Country | Link |
---|---|
EP (2) | EP0894915A1 (en) |
CN (1) | CN1265719A (en) |
AR (1) | AR015139A1 (en) |
AT (1) | ATE206793T1 (en) |
AU (1) | AU8978498A (en) |
CA (1) | CA2298508A1 (en) |
CO (1) | CO4840534A1 (en) |
DE (1) | DE69801997T2 (en) |
DK (1) | DK1002172T3 (en) |
ES (1) | ES2165698T3 (en) |
HR (1) | HRP20000046A2 (en) |
IT (1) | IT1293518B1 (en) |
PL (1) | PL338450A1 (en) |
PT (1) | PT1002172E (en) |
TR (1) | TR200000265T2 (en) |
WO (1) | WO1999006650A1 (en) |
ZA (1) | ZA986638B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT511833A4 (en) * | 2011-11-10 | 2013-03-15 | Schwing Gmbh F | MASTER CONSTRUCTION, ESPECIALLY FOR A AUTOBETON PUMP |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014203054A1 (en) * | 2014-02-20 | 2015-09-03 | Putzmeister Engineering Gmbh | Concrete distributor boom, in particular a mobile concrete pump |
DE102019133396A1 (en) * | 2019-11-15 | 2021-05-20 | Schwing Gmbh | Articulated drive with planetary gear, large manipulator and truck-mounted concrete pump |
DE102019133380A1 (en) * | 2019-11-15 | 2021-05-20 | Schwing Gmbh | Articulated drive with worm gear, large manipulator and truck-mounted concrete pump |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3572380A (en) * | 1968-10-08 | 1971-03-23 | Challenge Cook Bros Inc | Concrete pump boom |
DE1759404A1 (en) * | 1968-04-27 | 1971-09-23 | Schwing Friedrich | Device for distributing concrete |
GB2132676A (en) * | 1982-10-29 | 1984-07-11 | Takenaka Komuten Co | Apparatus for horizontally casting concrete |
-
1997
- 1997-07-31 IT IT97MI001835A patent/IT1293518B1/en active IP Right Grant
-
1998
- 1998-01-26 EP EP98101317A patent/EP0894915A1/en not_active Withdrawn
- 1998-07-22 DK DK98941399T patent/DK1002172T3/en active
- 1998-07-22 AU AU89784/98A patent/AU8978498A/en not_active Abandoned
- 1998-07-22 DE DE69801997T patent/DE69801997T2/en not_active Expired - Lifetime
- 1998-07-22 CA CA002298508A patent/CA2298508A1/en not_active Abandoned
- 1998-07-22 AT AT98941399T patent/ATE206793T1/en active
- 1998-07-22 ES ES98941399T patent/ES2165698T3/en not_active Expired - Lifetime
- 1998-07-22 WO PCT/EP1998/004588 patent/WO1999006650A1/en active IP Right Grant
- 1998-07-22 CN CN98807779A patent/CN1265719A/en active Pending
- 1998-07-22 EP EP98941399A patent/EP1002172B1/en not_active Expired - Lifetime
- 1998-07-22 TR TR2000/00265T patent/TR200000265T2/en unknown
- 1998-07-22 PL PL98338450A patent/PL338450A1/en unknown
- 1998-07-22 PT PT98941399T patent/PT1002172E/en unknown
- 1998-07-24 ZA ZA986638A patent/ZA986638B/en unknown
- 1998-07-30 CO CO98043557A patent/CO4840534A1/en unknown
- 1998-07-31 AR ARP980103821A patent/AR015139A1/en unknown
-
2000
- 2000-01-27 HR HR20000046A patent/HRP20000046A2/en not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1759404A1 (en) * | 1968-04-27 | 1971-09-23 | Schwing Friedrich | Device for distributing concrete |
US3572380A (en) * | 1968-10-08 | 1971-03-23 | Challenge Cook Bros Inc | Concrete pump boom |
GB2132676A (en) * | 1982-10-29 | 1984-07-11 | Takenaka Komuten Co | Apparatus for horizontally casting concrete |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT511833A4 (en) * | 2011-11-10 | 2013-03-15 | Schwing Gmbh F | MASTER CONSTRUCTION, ESPECIALLY FOR A AUTOBETON PUMP |
AT511833B1 (en) * | 2011-11-10 | 2013-03-15 | Schwing Gmbh F | MASTER CONSTRUCTION, ESPECIALLY FOR A AUTOBETON PUMP |
WO2013068112A1 (en) * | 2011-11-10 | 2013-05-16 | Schwing Gmbh | Boom construction, in particular for a truck-mounted concrete pump, and truck-mounted concrete pump |
CN103998368A (en) * | 2011-11-10 | 2014-08-20 | 施维英有限公司 | Boom construction, in particular for a truck-mounted concrete pump, and truck-mounted concrete pump |
EP2776360B1 (en) | 2011-11-10 | 2016-02-03 | Schwing GmbH | Boom construction, in particular for a truck-mounted concrete pump, and truck-mounted concrete pump |
CN103998368B (en) * | 2011-11-10 | 2016-06-08 | 施维英有限公司 | It is particularly useful for jib structure and the Vehicular concrete pump of Vehicular concrete pump |
CN105947909A (en) * | 2011-11-10 | 2016-09-21 | 施维英有限公司 | Boom construction and truck-mounted concrete pump |
US9453351B2 (en) | 2011-11-10 | 2016-09-27 | Schwing Gmbh | Boom construction for a truck-mounted concrete pump |
Also Published As
Publication number | Publication date |
---|---|
ITMI971835A1 (en) | 1999-01-31 |
ZA986638B (en) | 1999-02-02 |
WO1999006650A1 (en) | 1999-02-11 |
AR015139A1 (en) | 2001-04-18 |
ATE206793T1 (en) | 2001-10-15 |
PL338450A1 (en) | 2000-11-06 |
DE69801997D1 (en) | 2001-11-15 |
CN1265719A (en) | 2000-09-06 |
DK1002172T3 (en) | 2002-02-11 |
IT1293518B1 (en) | 1999-03-01 |
AU8978498A (en) | 1999-02-22 |
CA2298508A1 (en) | 1999-02-11 |
HRP20000046A2 (en) | 2001-10-31 |
PT1002172E (en) | 2002-03-28 |
ES2165698T3 (en) | 2002-03-16 |
EP1002172B1 (en) | 2001-10-10 |
TR200000265T2 (en) | 2000-05-22 |
DE69801997T2 (en) | 2002-05-16 |
CO4840534A1 (en) | 1999-09-27 |
EP1002172A1 (en) | 2000-05-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7523995B2 (en) | Milling machine | |
US4799556A (en) | Drilling boom | |
US5661917A (en) | Civil engineering works machine in which the working tool is mounted at the end of an articulated arm | |
EP0737612B1 (en) | Steering system for an articulated machine | |
EP0894915A1 (en) | Concrete supply arm with articulated sections | |
US4271926A (en) | Rotatable work platform | |
US4776230A (en) | Actuator assembly for industrial robots | |
EP0247066B1 (en) | Arm device | |
US4458800A (en) | Folding chute linkage assemblies | |
US4498568A (en) | Swinging chute linkage assemblies | |
CA1337118C (en) | Bucket levelling system | |
US4748867A (en) | Wrist assembly for industrial robots | |
MXPA00001086A (en) | Concrete supply arm with articulated sections | |
JPS59209790A (en) | Joint arm for manipulator | |
JPH0819973A (en) | Two-articulated arm mechanism provided with two articlar simultaneous driving source and its motion control method | |
JP4313119B2 (en) | Sprinkling machine and finishing method | |
AU9232998A (en) | Feed shell positioning mechanism | |
CN217581077U (en) | Control system of ground troweling machine | |
US6640375B1 (en) | Brush assembly | |
SU1673439A1 (en) | Manipulator hand | |
JPH0344833Y2 (en) | ||
JP2765593B2 (en) | Hydraulic Shovel Front Structure | |
JPH0714558Y2 (en) | Concrete pump boom equipment | |
SU1294997A1 (en) | Unit for guiding a nozzle | |
SU1116250A1 (en) | Pneumatic drive link-lever swivel mechanism |
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 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
17P | Request for examination filed |
Effective date: 19990426 |
|
AKX | Designation fees paid |
Free format text: AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE |
|
AXX | Extension fees paid |
Free format text: LT PAYMENT 19990426;SI PAYMENT 19990426 |
|
RAX | Requested extension states of the european patent have changed |
Free format text: RO PAYMENT 19990426;SI PAYMENT 19990426 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Withdrawal date: 20000814 |