DK159874B - HANDLING WORK WITH A MANUFACTURING BODY BETWEEN THE TRUCK BODY AND A DRIVING BODY - Google Patents
HANDLING WORK WITH A MANUFACTURING BODY BETWEEN THE TRUCK BODY AND A DRIVING BODY Download PDFInfo
- Publication number
- DK159874B DK159874B DK050187A DK50187A DK159874B DK 159874 B DK159874 B DK 159874B DK 050187 A DK050187 A DK 050187A DK 50187 A DK50187 A DK 50187A DK 159874 B DK159874 B DK 159874B
- Authority
- DK
- Denmark
- Prior art keywords
- handle
- actuator
- load
- force
- maneuvering
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/18—Power-operated hoists
Landscapes
- Mechanical Engineering (AREA)
- Engineering & Computer Science (AREA)
- Control And Safety Of Cranes (AREA)
- Massaging Devices (AREA)
- Vehicle Body Suspensions (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Casings For Electric Apparatus (AREA)
- Pallets (AREA)
- Control Of Electric Motors In General (AREA)
- Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Vending Machines For Individual Products (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
Description
DK 159874 BDK 159874 B
Opfindelsen angår et godshej seværk, der har et manøvreringsorgan beliggende mellem et lastbæreorgan og et drivorgan, der kan styres elektronisk eller ved hjælp af andre organer, hvor en manuel forskydning af 5 manøvreringsorganet opad eller nedad bevirker en bevægelse i tilsvarende retning af lasten.BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a freight hoist having an actuator located between a load carrier and a drive which can be controlled electronically or by other means, whereby a manual displacement of the actuator up or down causes a movement in the corresponding direction of the load.
Fra SE B 364 692 kendes et godshej seværk, der har en elektrisk, hydraulisk eller pneumatisk drevet motor, hvis motorigangsætter kan påvirkes over en im-10 pulsoverførende forbindelse, et Bowdentræk, fra et manøvreringsorgan, der kan påvirkes manuelt. Manøvreringsorganet, der kan bestå af et håndtag med to imod hinanden virkende fjedre, kan bevæges langs med en med en krog forbundet trækstang. En mellem stangen og hånd-15 taget arbejdende stift, som griber ind i slidser i håndtaget, gør det muligt at overføre bevægelse mellem stang og håndtag. Bevægelse af håndtaget i en af retningerne medfører, at kablet i Bowdentrækket påvirker motoren til at starte eller standse. Kablet fungerer 20 derved som en forlænget mekanisk trykknap til henholdsvis start og standsning af motoren.SE B 364 692 discloses a freight hoist having an electric, hydraulic or pneumatically driven motor whose motor starter can be actuated over an impulse transmitting connection, a Bowden drag, from a manually actuated actuator. The actuator, which may consist of a handle with two mutually operable springs, can be moved along with a pull rod connected to a hook. A working pin between the rod and the handle 15, which engages in slots in the handle, allows movement between the rod and handle. Moving the handle in one of the directions causes the cable in the Bowden pull to influence the engine to start or stop. The cable thereby acts as an extended mechanical pushbutton for starting and stopping the motor, respectively.
Denne kendte indretning, der har en mekanisk registrering af løftebevægelsen og overfører denne mekanisk til en drivmotor over et Bowdentræk,kan komme ud 25 for at arbejde ved snavsede eller vanskelige forhold og udsættes for ydre påvirkninger med risiko for beskadigelse af kablet. Dette kunne medføre, at en indstillet neutralstilling for løftningen ændres, hvis kablets oprindelige længde ændres ukontrolleret, hvorved lasten 30 kunne komme til fejlagtigt at sænkes eller hæves ved den såkaldte normale neutralstilling, dvs. når håndtaget ikke påvirkes manuelt overhovedet.This known device, which has a mechanical recording of the lifting motion and transmits it mechanically to a drive motor over a Bowden drag, can come out 25 to operate in dirty or difficult conditions and is subjected to external influences with the risk of damage to the cable. This could cause a set neutral position for the lift to change if the original length of the cable is changed uncontrolled, whereby the load 30 could be erroneously lowered or raised at the so-called normal neutral position, ie. when the handle is not manually operated at all.
Det eventuelle svigt i signaloverføringssystemet mellem last og drivmotor kan let forekomme med de nævn-35 te mekaniske midler.The possible failure of the signal transmission system between load and drive motor can easily occur with the aforementioned mechanical means.
Bæres en tung last i krogen kan løftelinen give sig, hvorved Bowdenkablets fastgørelsesbeslag, der erIf a heavy load is carried in the hook, the lifting line can give way, whereby the Bowden cable fastening bracket, which is
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2 fastgjort til krogen og stangen, kan ændre stilling i forhold til håndtaget, der holdes stille manuelt i den ønskede neutralstilling, med en hejsning af lasten i lastens virksomme retning til følge.2 attached to the hook and rod, can change position relative to the handle, which is held still manually in the desired neutral position, with a hoisting of the load in the effective direction of the load.
5 Fjedrene vil også kunne påvirke håndtaget til at fjedre ukontrolleret i lastens hejseretning ligesom en bil med dårlige støddæmpere, eftersom der jo ikke kan foreligge noget dæmpeorgan, hvis man ønsker direkte at overføre lastens størrelse og retning til hejsemotoren.5 The springs will also be able to influence the handle to spring uncontrollably in the hoist direction of the cargo, just like a car with bad shock absorbers, since there is no damper if you wish to transfer the load size and direction directly to the hoist motor.
10 Opfindelsens hovedformål er at tilvejebringe et hejseværk af ovennævnte art, der er enkelt, og som fungerer effektivt uden krav om stor muskelkraft hos brugeren, og som løser de ovenfor nævnte problemer.The main object of the invention is to provide a hoist of the above-mentioned type which is simple and which functions effectively without the requirement of great muscular power of the user and which solves the above-mentioned problems.
Dette opnås ved hjælp af et hejseværk, der iføl-15 ge opfindelsen er ejendommeligt ved, at to elektrisk virkende kraftsendere, som består af piezoelektriske krystaller, og som er således forbundet med hejseværkets styrekredsløb, at de kan registrere det manuelt påvirkelige manøvreringsorgans bevægelse, som frembrin-20 ges af en operatør, der påvirker dette manøvreringsorgan, således at denne bevægelse sammenlignes med lastens tvangsmæssige nedadgående bevægelse, idet kraftsenderne, af hvilke den ene er forbundet med et som håndtag udformet manøvreringsorgan, og den anden er 25 forbundet med et forbindelsesorgan, langs hvilket håndtaget kan bevæges, og som er indrettet til at strække sig mellem lastbæreorganet og drivorganet, er indrettet til at overføre signaler, som er proportionale med den kraft, der manuelt påføres manøvreringsorganet i hen-30 holdsvis opadgående og nedadgående retning.This is achieved by means of a hoist which according to the invention is characterized in that two electrically acting force transmitters, consisting of piezoelectric crystals, which are connected to the control circuit of the hoist, enable them to detect the movement of the manually actuated actuator, which is produced by an operator acting on this actuator such that this motion is compared with the forced downward movement of the load, the force ends, one of which is connected to a handle-shaped actuator and the other 25 is connected to a connecting means, along which the handle can be moved and arranged to extend between the load carrier and the drive means is adapted to transmit signals which are proportional to the force manually applied to the actuator in the upward and downward directions respectively.
Herved opnås at registreringen af operatørens løftebevægelse og overføringen af denne registrering til drivmotoren er elektrisk, hvorfor de nævnte ulemper ved mekanisk registrering og overføring undgås.In this way, the registration of the operator's lifting motion and the transfer of this registration to the drive motor is obtained, which is why the mentioned disadvantages of mechanical registration and transmission are avoided.
35 Opfindelsen forklares i det følgende nærmere un der henvisning til tegningen, på hvilkenThe invention will be explained in more detail below with reference to the drawing, in which
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3 fig. 1 viser et godshej seværk ifølge opfindelsen, set fra siden, fig. 2 et snit gennem hejseværket langs linien II-II, 5 fig. 3 en del af det i hejseværket indeholdte manøvreringsorgan, og fig. 4 en yderligere udførelsesform for manøvreringsorganet.3 FIG. 1 is a side elevational view of a freight hoist according to the invention; FIG. 2 is a section through the hoist along line II-II; FIG. 3 shows a part of the actuator contained in the hoist; and FIG. 4 shows a further embodiment of the actuator.
Et godshej seværk 1 er af den art, der er egnet 10 til brug ved ofte tilbagevendende lejligheder til hurtig og bekvem løftning af byrder uden behov for store fysiske anstrengelser, og for eksempel til anbringelse af byrder i en behandlingsmaskine eller på en holder eller en stabel paller osv., således at brugeren ople-15 ver hejseværket, som om det arbejdede i en såkaldt vægtløs tilstand, både med og uden en belastning. Hejseværket indeholder en solenoidemotor 2 eller et andet passende drivorgan, der er indrettet således, at det kan styres af en sender, der er indeholdt i og kan 20 forbindes med et manøvreringsorgan 3, der kan aktiveres manuelt. Manøvreringsorganet 3 er anbragt mellem motoren, der fungerer som et drivorgan 2, og et last-bæreorgan 6 af passende art, der for eksempel virker med et antal vakuumorganer, elektromagneter eller klem-25 me- eller gribeorganer, osv. Manøvreringsorganet 3 er fortrinsvis udformet som et håndtag, der er fastgjort til en stang 7 eller en anden form for forbindelse mellem lastorganet 6 og drivorganet 2, hvilken stang er fastgjort til en line 8. Linen 8 kan vikles 30 om en linetromle 9, der for eksempel over et geardrev 10 er indrettet til at drives af drivorganet 2. Manøvreringsorganet 3 er passende anbragt ved den frie ende 8A af linen 8, medens den anden ende 8B af linen kan være forbundet til tromlen via en linelåsean-35 ordning 11 på kendt måde.A freight hoist 1 is of the type suitable 10 for use on frequently recurring occasions for quick and convenient lifting of loads without the need for great physical effort, and for example for placing loads in a processing machine or on a holder or stack. pallets, etc., so that the user experiences the hoist as if operating in a so-called weightless state, both with and without a load. The hoist contains a solenoid motor 2 or other suitable drive means which is arranged so that it can be controlled by a transmitter contained in and can be connected to a manually actuated actuator 3. The actuator 3 is disposed between the motor acting as a drive member 2 and a load carrier member 6 of suitable type, for example operating with a plurality of vacuum means, electromagnets or clamping or gripping means, etc. The actuating means 3 is preferably formed as a handle attached to a rod 7 or some other form of connection between the load means 6 and the drive means 2, which rod is attached to a line 8. The line 8 can be wound 30 about a line drum 9, for example over a gear drive 10 is arranged to be driven by the drive means 2. The actuator 3 is suitably disposed at the free end 8A of the line 8, while the other end 8B of the line can be connected to the drum via a line locking device 11 in a known manner.
En solenoidemotor 2, der er en mangepolet tre-fasemotor med en speciel viklingsform, tillader en 4A solenoid motor 2, which is a multi-pole three-phase motor with a special winding shape, allows a 4
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stilstandsfunktion og opretholdelse af et konstant drejningsmoment over lange perioder, idet karakteristikken for en motor af denne art er således, at drej -ningsmomentet forbliver i hovedsagen konstant uafhæn-5 gigt af omløbstallet.standstill function and maintaining a constant torque for long periods, the characteristic of a motor of this kind being that the torque remains substantially independent of the orbital number.
Anbragt i håndtaget 3, osv., findes et antal kraftsendere 12, 13 eller andre organer, der muliggør en registrering af bevægelser, der af en operatør meddeles håndtaget i forhold til den nødvendigvis ned-10 adgående bevægelse af den aktuelle last. Den manuelle kraft, der kræves for at aktivere for eksempel to pie-zoelektriske følere 12, 13, der er indeholdt i håndtaget 3· for at opnå den ønskede indstilling og fastholdelse af belastningen, er lille, almindeligvis af 15 størrelsesordenen 20-50 g, og denne kraft kan indstilles i forhold til motorens drejningsmoment.Located in the handle 3, etc., there are a plurality of power transmitters 12, 13 or other means which enable a recording of movements communicated by an operator to the necessarily downward movement of the current load. The manual force required to actuate, for example, two piezoelectric sensors 12, 13 contained in the handle 3 to achieve the desired adjustment and retention of the load is small, generally of the order of 20-50 g. and this force can be set in relation to the torque of the motor.
De to piezoelektriske krystalfølere 12, 13, der er anbragt i håndtaget 3, og som tjener som følere, kan forbindes med hinanden og til håndtaget 3 og 20 en komponent 7A, der er fastgjort til stangen 7 ved limning, og kan aktiveres efter påvirkning af en aktiveringsknap 14, osv.The two piezoelectric crystal sensors 12, 13, which are arranged in the handle 3 and which act as sensors, can be connected to each other and to the handle 3 and 20 a component 7A attached to the rod 7 by gluing and can be activated after actuation of the an activation button 14, etc.
Signalet fra den øvre føler 12 er indrettet til at være proportionalt med kraften, der meddeles 25 håndtaget 3 i opadgående retning 15, medens signalet fra den nedre føler 13 på lignende måde proportionalt med kraften, der meddeles håndtaget 3 i nedadgående retning 16.The signal from the upper sensor 12 is arranged to be proportional to the force transmitted to the handle 3 in the upward direction 15, while the signal from the lower sensor 13 is similarly proportional to the force communicated to the handle 3 in the downward direction 16.
For at give hejseværket en trinløs følsomheds-30 karakteristik bringes kraften, der påføres håndtaget 3, til at styre en funktionsgenerator til frembringelse af et rampeformet signal, i det følgende kaldet en rampegenerator, der igen er således indrettet, at den for eksempel styrer motorens drejningsmoment, i hvil-35 ket tilfælde drejningsmomentet, hvis der påføres håndtaget 3 en kraft, vil vokse med en hastighed, der erIn order to give the hoist a stepless sensitivity characteristic, the force applied to the handle 3 causes a function generator to produce a ramp-shaped signal, hereinafter called a ramp generator, which in turn is arranged to control, for example, the torque of the motor. in which case the torque, if applied to the handle 3, will grow at a speed that is
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5 proportionalt med den pågældende kraft. Dette medfører, at dersom håndtaget 3 holdes stationært, vil rampegeneratoren antage en sådan værdi, at drejningsmomentet vil svare præcis til belastningen på hejseværket, hvil-5 ket bevirker, at håndtaget 3 kan slippes, når det er i den stilling, uden at lasten viser nogen tendens til at bevæge sig. Systemets friktion udgør således balanceområdet .5 proportional to the force in question. This means that if the handle 3 is held stationary, the ramp generator will assume such a value that the torque will correspond exactly to the load on the hoist, which means that the handle 3 can be released when it is in that position without the load showing any tendency to move. The friction of the system thus constitutes the balance area.
Der kan indbygges en sikkerhedsfunktion, som 10 bevirker, at lastorganet hindres i at slippe lasten, medens et drejningsmoment påføres motoren 2, ved at en faldbremse, fx af den fjederbelastede elektromagnetiske type, indføjes i hejseværket 1 med henblik på at bremse linetromlens rotation i tilfælde af strøm-15 svigt.A safety function can be built in which prevents the load means from releasing the load while a torque is applied to the motor 2 by introducing a fall brake, for example of the spring-loaded electromagnetic type, into the hoisting station 1 in order to brake the rotation of the line drum in case of power-15 failure.
Anordningen 1 er fortrinsvis indrettet til at styres ved hjælp af specielt udviklet elektronik, der styrer tre triac'er, medens motorens drejningsmoment styres automatisk ved hjælp af en såkaldt spændingssty-20 reomskifter efter aktivering af følerne 12, 13. Når håndtaget 3 føres i opadgående retning 15, øges drejningsmomentet, indtil drevet begynder at dreje, hvilket registreres af den føler 12, som belastningen fjernes fra, når operatøren prøver at holde hånd-25 taget 3 stationært. Når operatøren ønsker at tilvejebringe en nedadgående bevægelse 16, fører han håndtaget 3 nedad, hvilket registreres af føleren 13, der bevirker reduktion af motorens drejningsmoment, således at lasten synker. Hvis lasten synker hurtigere 30 end bevægelsen af håndtaget, vil der optræde en kraft i føleren 13, der hurtigt øger motorens drejningsmoment igen via elektronikken. Den ønskede vægtløse funktion opnås ved, at følerne 12, 13 til stadighed registrerer operatørens håndbevægelser og ved forøgelse eller 35 reduktion af motorens drejningsmoment søger at bringe operatørens påvirkning på håndtaget til værdien nul.The device 1 is preferably arranged to be controlled by specially designed electronics which control three triacs, while the torque of the motor is automatically controlled by a so-called voltage control switch after activation of the sensors 12, 13. When the handle 3 is moved upwards direction 15, the torque increases until the drive begins to rotate, which is detected by the sensor 12 from which the load is removed as the operator attempts to hold the handle 3 stationary. When the operator wishes to provide a downward movement 16, he directs the handle 3 downwardly, which is sensed by the sensor 13, which causes the torque reduction of the motor to decrease as the load. If the load drops 30 faster than the movement of the handle, a force will occur in the sensor 13, which rapidly increases the torque of the motor again via the electronics. The desired weightless function is achieved by the sensors 12, 13 constantly recording the operator's hand movements and by increasing or decreasing the torque of the motor trying to bring the operator's influence on the handle to zero.
66
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Den i fig. 4 viste variant af manøvreringsorganet 103 består af et håndtag, der er bevægeligt optaget på en stang 107, som via en kugle- og fatningsforbindelse 150 og et linelåseorgan 151 er fast-5 gjort til en line 108. Fastgjort til stangen 107 findes et håndtagsdæksel 152, der på den indvendige side af henholdsvis den øvre og den nedre dækseldel 152A, 152B bærer følere 112 og 113, fortrinsvis af den ovenfor beskrevne art og fortrinsvis fastgjort 10 ved hjælp af dobbeltklæbende tape 153.The FIG. 4, the variant of the actuator 103 consists of a handle movably received on a rod 107 which is secured to a line 108. Via a ball and socket connection 150 and a line locking member 151, attached to the rod 107 is a handle cover 152. which carries on the inner side of the upper and lower cover portions 152A, 152B, respectively, sensors 112 and 113, preferably of the type described above and preferably secured 10 by double-adhesive tape 153.
Ragende sideværts ud fra håndtaget 103 og fastgjort til dette findes en tungeformet del 107A, der kan bære gummipropper 154, 155 eller andre pas sende aktiveringsorganer, der vender imod følerne 112, 15 113 og kan samvirke med disse og er indrettet således, at de følger håndtaget 103, når det bevæges langs stangen 107 i den tilsigtede retning, og som, når dette sker, kan aktivere følerne 112, 113 ved hjælp af gummipropperne 154, 155, osv., for således at be- 20 virke, at informationen vedrørende håndtagets og stangens stilling i forhold til hinanden sendes til drivorganet over en forbindelse 156, der er sluttet til følerne 112, 113, hvor denne forbindelse i det viste eksempel består af et hunstik.Projecting laterally from the handle 103 and attached thereto, there is a tongue-shaped portion 107A capable of supporting rubber stoppers 154, 155 or other passive actuators facing the sensors 112, 15 113 and cooperating therewith and arranged to the handle 103 as it moves along the bar 107 in the intended direction and, when this happens, can activate the sensors 112, 113 by means of the rubber plugs 154, 155, etc., so as to cause the information relating to the handle and the position of the rod relative to each other is transmitted to the drive means over a connection 156 connected to the sensors 112, 113, where in the example shown this connection consists of a female connector.
25 Opadgående bevægelse af håndtaget 103 påvirker således føleren 112, medens føleren 113 påvirkes af aktiveringsorganet 155, når håndtaget bevæges nedad.Thus, upward movement of the handle 103 affects the sensor 112, while the sensor 113 is actuated by the actuator 155 as the handle is moved downward.
Den elektriske funktionsbeskrivelse for anordningens styring er følgende: 30 Signalerne fra følerne føres til en bufferfor stærker, der er en operationsforstærker med høj impedans, eftersom føleren er kapacitiv. Signalerne blandes derpå til frembringelse af et signal med en polaritet, der svarer til kraftens retning. Polariteten af dette 35 signal styrer også to analogomskiftere på en sådan måde, at den føler, der ikke er aktiv, kortsluttes. Dette hindrer, at føleren "driver".The electrical function description for the device control is as follows: The signals from the sensors are fed to a buffer amplifier, which is a high impedance operational amplifier, since the sensor is capacitive. The signals are then mixed to produce a signal having a polarity corresponding to the direction of the force. The polarity of this signal also controls two analog switches in such a way that the inactive sensor is short-circuited. This prevents the sensor from "drifting".
Claims (3)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE8502716 | 1985-05-31 | ||
| SE8502716A SE453589B (en) | 1985-05-31 | 1985-05-31 | DEVICE AT A LOAD LIFT |
| SE8600247 | 1986-05-30 | ||
| PCT/SE1986/000247 WO1986007042A1 (en) | 1985-05-31 | 1986-05-30 | Arrangement for a goods hoist |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| DK50187D0 DK50187D0 (en) | 1987-01-30 |
| DK50187A DK50187A (en) | 1987-01-30 |
| DK159874B true DK159874B (en) | 1990-12-24 |
| DK159874C DK159874C (en) | 1991-05-21 |
Family
ID=20360418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK050187A DK159874C (en) | 1985-05-31 | 1987-01-30 | HANDLING WORK WITH A MANUFACTURING BODY BETWEEN THE TRUCK BODY AND A DRIVING BODY |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0262134B1 (en) |
| AT (1) | ATE73420T1 (en) |
| AU (1) | AU5961686A (en) |
| DE (1) | DE3684321D1 (en) |
| DK (1) | DK159874C (en) |
| NO (1) | NO163483C (en) |
| SE (1) | SE453589B (en) |
| WO (1) | WO1986007042A1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6360898A (en) * | 1986-08-29 | 1988-03-16 | 株式会社 キト− | Operating device for electric chain block |
| US4844421A (en) * | 1987-02-18 | 1989-07-04 | Kabushiki Kaisha Kito | Operating device for electric hoist |
| DE29604729U1 (en) * | 1996-03-14 | 1996-06-13 | Zasche Fördertechnik GmbH, 86720 Nördlingen | Balancing lifter |
| US6668668B1 (en) | 1999-02-08 | 2003-12-30 | Stanley Assembly Technologies | Non-contacting sensors |
| US6241462B1 (en) | 1999-07-20 | 2001-06-05 | Collaborative Motion Control, Inc. | Method and apparatus for a high-performance hoist |
| DE29919136U1 (en) * | 1999-10-30 | 2001-03-08 | Muennekehoff Gerd | System for controlling the movements of a load lifting device |
| SE0004747D0 (en) | 2000-12-20 | 2000-12-20 | Mtm I Aarjaeng Ab | Hoist |
| SE0300638D0 (en) * | 2003-03-10 | 2003-03-10 | Kahlman Produkter Ab | Load hoist arrangement |
| DE102012002501A1 (en) | 2012-02-10 | 2013-08-14 | Rinke Handling-Systems GmbH | operating device |
| SE539083C2 (en) | 2014-09-12 | 2017-04-04 | Binar Quick-Lift Systems Ab | Actuator for manual control of a load suspended in the actuator |
| FR3075191B1 (en) * | 2017-12-15 | 2020-12-11 | Sapelem | LOAD HANDLING INSTALLATION |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3384350A (en) * | 1966-09-22 | 1968-05-21 | Zimmerman D W Mfg | Pneumatically-operated device for manipulating heavy loads |
| SE364692B (en) * | 1972-10-23 | 1974-03-04 | J Faegerskioeld | |
| US3921959A (en) * | 1974-07-22 | 1975-11-25 | Columbus Mckinnon Corp | Load balancer and hoist control |
| US3998432A (en) * | 1976-01-02 | 1976-12-21 | Charles D. Uldricks | Air operated load balancing hoist |
-
1985
- 1985-05-31 SE SE8502716A patent/SE453589B/en not_active IP Right Cessation
-
1986
- 1986-05-30 DE DE8686903668T patent/DE3684321D1/en not_active Expired - Fee Related
- 1986-05-30 EP EP86903668A patent/EP0262134B1/en not_active Expired - Lifetime
- 1986-05-30 AT AT86903668T patent/ATE73420T1/en not_active IP Right Cessation
- 1986-05-30 WO PCT/SE1986/000247 patent/WO1986007042A1/en active IP Right Grant
- 1986-05-30 AU AU59616/86A patent/AU5961686A/en not_active Abandoned
-
1987
- 1987-01-29 NO NO870365A patent/NO163483C/en not_active IP Right Cessation
- 1987-01-30 DK DK050187A patent/DK159874C/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DK50187D0 (en) | 1987-01-30 |
| SE453589B (en) | 1988-02-15 |
| ATE73420T1 (en) | 1992-03-15 |
| NO163483B (en) | 1990-02-26 |
| NO870365L (en) | 1987-03-30 |
| AU5961686A (en) | 1986-12-24 |
| WO1986007042A1 (en) | 1986-12-04 |
| DK159874C (en) | 1991-05-21 |
| DE3684321D1 (en) | 1992-04-16 |
| EP0262134A1 (en) | 1988-04-06 |
| NO163483C (en) | 1990-06-06 |
| SE8502716D0 (en) | 1985-05-31 |
| DK50187A (en) | 1987-01-30 |
| SE8502716L (en) | 1986-12-01 |
| NO870365D0 (en) | 1987-01-29 |
| EP0262134B1 (en) | 1992-03-11 |
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