ES2216264T3 - ACTUATOR WITH ADJUSTABLE RACE. - Google Patents

ACTUATOR WITH ADJUSTABLE RACE.

Info

Publication number
ES2216264T3
ES2216264T3 ES98830725T ES98830725T ES2216264T3 ES 2216264 T3 ES2216264 T3 ES 2216264T3 ES 98830725 T ES98830725 T ES 98830725T ES 98830725 T ES98830725 T ES 98830725T ES 2216264 T3 ES2216264 T3 ES 2216264T3
Authority
ES
Spain
Prior art keywords
flexible element
chain
housing
actuator
interleaved
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 - Lifetime
Application number
ES98830725T
Other languages
Spanish (es)
Inventor
Marco Lambertini
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Domint SRL
Original Assignee
Domint SRL
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Domint SRL filed Critical Domint SRL
Application granted granted Critical
Publication of ES2216264T3 publication Critical patent/ES2216264T3/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F11/00—Man-operated mechanisms for operating wings, including those which also operate the fastening
    • E05F11/02—Man-operated mechanisms for operating wings, including those which also operate the fastening for wings in general, e.g. fanlights
    • E05F11/04—Man-operated mechanisms for operating wings, including those which also operate the fastening for wings in general, e.g. fanlights with cords, chains or cables
    • E05F11/06—Man-operated mechanisms for operating wings, including those which also operate the fastening for wings in general, e.g. fanlights with cords, chains or cables in guide-channels
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/611—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
    • E05F15/616—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by push-pull mechanisms
    • E05F15/619—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by push-pull mechanisms using flexible or rigid rack-and-pinion arrangements
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/644—Flexible elongated pulling elements
    • E05Y2201/656—Chains
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/71—Toothed gearing
    • E05Y2201/722—Racks
    • E05Y2201/724—Flexible
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Type of wing
    • E05Y2900/148—Windows

Landscapes

  • Transmission Devices (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Vehicle Body Suspensions (AREA)
  • Fluid-Damping Devices (AREA)
  • Actuator (AREA)

Abstract

SE EXPONE UN ACCIONADOR LINEAL CON CADENA, Y CARRERA AJUSTABLE, QUE COMPRENDE UNA ENVOLTURA EN FORMA DE CAJA (1), QUE ALOJA UNA CADENA (2), ENROLLADA DENTRO DE LA CAJA (1) Y QUE PUEDE SER IMPULSADA POR MEDIOS DE ACCIONAMIENTO (3); ENTRE LA CAJA (1) Y LA CADENA (2) SE CONTEMPLAN MEDIOS DISEÑADOS PARA CONTROLAR EL BLOQUEO DE LA CARRERA DE DESENROLLAMIENTO DE LA CADENA (2), CONSISTIENDO DICHOS MEDIOS EN UN INSERTO (12) QUE PUEDE SE RETIRADO DE LA CADENA (2) Y ACOPLARSE A ESTE ULTIMA A FIN DE PERMITIR EL AJUSTE PREDECIDIBLE DEL VALOR DE LA CARRERA DE DESENROLLAMIENTO DE LA CADENA (2), Y UN SENSOR (15) QUE DETECTA EL PASO DEL INSERTO (12) CUANDO ESTE ULTIMO SE ACOPLA A LA CADENA (2).A LINEAR ACTUATOR WITH A CHAIN AND ADJUSTABLE RACE IS EXPOSED, THAT INCLUDES A WRAPPED SHAPE WRAP (1), WHICH HOUSES A CHAIN (2), WRAPPED INSIDE THE BOX (1) AND CAN BE PROMOTED BY DRIVING MEANS ( 3); BETWEEN THE BOX (1) AND THE CHAIN (2) MEANS DESIGNED TO CONTROL THE CHAIN DEVELOPMENT RACE LOCK (2), CONSIDERING THESE MEANS IN AN INSERT (12) THAT CAN BE REMOVED FROM THE CHAIN (2) ) AND COUPLING TO THIS LAST IN ORDER TO ALLOW THE PREDECIDIBLE ADJUSTMENT OF THE VALUE OF THE CHAIN DEVELOPMENT RACE (2), AND A SENSOR (15) THAT DETECTS THE INSERT STEP (12) WHEN THIS LAST COUPLE TO THE CHAIN (two).

Description

Actuador con carrera ajustable.Actuator with adjustable stroke.

La presente invención se refiere a un actuador lineal para la impulsión de dos unidades que son móviles una con respecto a la otra; en particular, sin por ello limitar el alcance de la aplicación, en el sector de los mecanismos que mueven celosías tales como marcos de ventanas sostenidas lateralmente, marcos de ventanas giratorios e inclinables y similares.The present invention relates to an actuator linear for the drive of two units that are mobile one with regarding the other; in particular, without limiting the scope of the application, in the sector of the mechanisms that move lattices such as laterally held window frames, frames of revolving and tilting windows and the like.

La técnica conocida prevé ya desde hace cierto tiempo que este tipo de movimiento sea proporcionado a través de actuadores que usan un elemento flexible, en particular una cadena, alojado en una carcasa y obligado a salir de dicha carcasa a través de medios de impulsión eléctricos. El ángulo de apertura de las celosías, por lo tanto, está determinado por la carrera de salida de la cadena, controlada a través de dispositivos mecánicos o electrónicos. Los medios de detección de la carrera de los primeros se componen de un perno fijado a la cadena durante la construcción del actuador, en una posición predefinida correspondiente al valor de carrera deseado para el actuador; el perno luego es detectado a través de medios adecuados (normalmente un microinterruptor) que transmiten el mando al motor principal. Por el contrario, los últimos usan un dispositivo que controla la rotación del motor (por ejemplo un encoder) o un temporizador de la impulsión que permite el ajuste de la carrera deseada.The known technique already provides for some time that this type of movement is provided through actuators that use a flexible element, in particular a chain, housed in a housing and forced out of said housing through of electric drive means. The opening angle of the lattices, therefore, is determined by the starting stroke of the chain, controlled through mechanical devices or electronic The means of detecting the career of the first They consist of a bolt attached to the chain during construction of the actuator, in a predefined position corresponding to the value desired stroke for the actuator; the bolt is then detected at through suitable means (usually a microswitch) that They transmit the command to the main engine. On the contrary, the the latter use a device that controls engine rotation (for example an encoder) or a drive timer that allows the desired stroke adjustment.

La primera solución descrita tiene la ventaja de ser económica, pero constituye un actuador "rígido", en el sentido que su carrera operativa sólo puede ser ajustada durante la fabricación.The first solution described has the advantage of be economical, but constitutes a "rigid" actuator, in the sense that your operational career can only be adjusted during the manufacturing.

La segunda solución, gracias al uso de medios de ajuste electrónicos, permite que la carrera deseada pueda ser ajustada de manera continua durante la instalación, pero es más costosa que la solución anterior.The second solution, thanks to the use of electronic adjustment, allows the desired stroke to be adjusted continuously during installation, but it is more expensive than the previous solution.

También el documento US 4.521.993 que publica las características del preámbulo de la reivindicación 1, se refiere a un actuador del tipo con una cadena alojada en una carcasa y obligada a salir a través de medios de impulsión manuales. De la misma manera que las otras soluciones publicadas, el ángulo de apertura de la celosía está determinado por la carrera de salida de la cadena que es controlada a través de un dispositivo mecánico. Tal dispositivo comprende medios de detección que se componen de una pieza intercalada que se puede vincular a una cadena. La pieza intercalada está proyectada para interactuar con el dispositivo de manera que la carrera de desenrollado de la cadena sea detenida a una longitud deseada.Also document US 4,521,993 that publishes the characteristics of the preamble of claim 1, refers to an actuator of the type with a chain housed in a housing and forced to exit through manual drive means. Of the same way as the other published solutions, the angle of Lattice opening is determined by the starting stroke of the chain that is controlled through a mechanical device. Such device comprises detection means that are composed of a interleaved piece that can be linked to a chain. The piece interspersed is designed to interact with the device so that the chain unwinding stroke is stopped at a desired length

El objetivo de la presente invención, por lo tanto, es el de superar las desventajas mencionadas con anterioridad proporcionando un actuador del tipo con cadena, con una carrera ajustable, donde sea posible realizar dicho ajuste en cualquier momento usando medios mecánicos, haciendo de esta manera que la solución sea práctica y económica.The objective of the present invention, therefore Therefore, it is to overcome the aforementioned disadvantages providing a chain type actuator, with a stroke adjustable, where possible to make such adjustment in any moment using mechanical means, making this way that the Solution be practical and economical.

Las características técnicas de la presente invención, según los objetivos mencionados, están definidas en la reivindicación 1, y las ventajas se pueden apreciar con mayor claridad a través de la descripción detallada que sigue, con referencia a los dibujos anexos, que ilustran una realización de la invención, sin limitar el alcance de su aplicación, y en los cuales:The technical characteristics of this invention, according to the aforementioned objectives, are defined in the claim 1, and the advantages can be seen with greater clarity through the detailed description that follows, with reference to the accompanying drawings, which illustrate an embodiment of the invention, without limiting the scope of its application, and in which:

- la figura 1 es una vista en perspectiva, con algunas partes exhibidas en una vista de despiece, del actuador de acuerdo a la presente invención, con la carcasa abierta;- Figure 1 is a perspective view, with some parts displayed in an exploded view of the actuator of according to the present invention, with the housing open;

- la figura 2 es una vista del actuador exhibido en la figura 1, pero con la carcasa en su configuración cerrada;- Figure 2 is a view of the actuator displayed in figure 1, but with the housing in its closed configuration;

- la figura 3 ilustra un detalle de la porción de la carcasa configurada tipo caja correspondiente a la guía para la cadena de impulsión.- Figure 3 illustrates a detail of the portion of the box-shaped configured housing corresponding to the guide for the drive chain

Con referencia a los dibujos anexos, el actuador publicado comprende una carcasa configurada tipo caja (1), que se compone de dos mitades (1a y 1b) que pueden ser unidas utilizando medios de fijación exhibidos esquemáticamente y denotados en la figura 2 con "1f".With reference to the accompanying drawings, the actuator published includes a housing type box (1), which is It consists of two halves (1a and 1b) that can be joined using fixing means shown schematically and denoted in the Figure 2 with "1f".

La carcasa configurada tipo caja (1) aloja un elemento flexible (2) en este caso compuesto por una cadena de eslabones, que se envuelve sobre la pista (4) realizada dentro de la mitad identificada mediante "1a", dicha cadena siendo impulsada por un motor eléctrico ilustrado con líneas de trazos y denotado en la figura 2 mediante el numeral 3, que, de manera conocida, manda la rotación de una polea dentada (5) que engrana con los eslabones de la cadena (2).The configured housing type box (1) houses a flexible element (2) in this case composed of a chain of links, which is wrapped on the track (4) made within the half identified by "1a", said chain being driven by an electric motor illustrated with dashed lines and denoted in Figure 2 by numeral 3, which, in a known way, commands the rotation of a toothed pulley (5) that meshes with the links of the chain (2).

Un extremo de la cadena (2), denominado el extremo activo y denotado mediante el numeral 6, tiene un elemento de conexión (7) que puede salir de una abertura (8) en la porción (1a) y que se conecta a una de las dos unidades a impulsar, en particular el marco móvil a abrir, que no esta ilustrado, siendo del tipo conocido y no formando parte del objeto de la presente invención.One end of the chain (2), called the active end and denoted by numeral 6, has an element of connection (7) that can leave an opening (8) in the portion (1a) and that connects to one of the two units to be promoted, in particular the mobile frame to open, which is not illustrated, being of known type and not being part of the object of the present invention.

La porción (1a) de la carcasa configurada tipo caja tiene un orificio de inspección (10), que puede ser cerrado con una tapa (11), y que permite el acceso a la cadena (2) desde la parte externa.The portion (1a) of the housing configured type box has an inspection hole (10), which can be closed with a cover (11), and allowing access to the chain (2) from the external part.

El numeral 12 indica una pieza intercalada extraible, cuya sección inferior comprende una porción ahusada (13) configurada de modo tal que se encastra de manera segura dentro del espacio que hay entre dos eslabones consecutivos de la cadena (2); por el contrario, la sección superior de la pieza intercalada (12) tiene una protuberancia tipo leva (14) proyectada para interceptar, durante la carrera lineal de la cadena, un microinterruptor (15) ilustrado esquemáticamente en la figura 1 y solidario con la carcasa configurada tipo caja.Numeral 12 indicates an interleaved piece removable, whose lower section comprises a tapered portion (13) configured so that it is securely embedded within the space between two consecutive links in the chain (2); on the contrary, the upper section of the interleaved piece (12) It has a cam-like protuberance (14) designed to intercept, during the linear stroke of the chain, a microswitch (15) schematically illustrated in figure 1 and in solidarity with the housing configured type box.

Nuevamente en la figura 2, la parte frontal de la porción configurada tipo caja (1b) posee una sección de acceso (20), cuya sección frontal tiene un orificio (21) para el paso de los conductores de potencia del motor (3) y un LED (22) que indica si el motor (3) está encendido o apagado.Again in Figure 2, the front of the configured portion type box (1b) has an access section (20), whose front section has a hole (21) for the passage of motor power conductors (3) and an LED (22) that indicates whether the Engine (3) is on or off.

Finalmente, el numeral 23 indica dos guías, superior e inferior, que actúan como elementos para la fijación de todo el actuador a la primera de las dos unidades, preferentemente el marco fijo de las celosías.Finally, numeral 23 indicates two guides, upper and lower, which act as elements for fixing the entire actuator to the first of the two units, preferably the fixed frame of lattices.

El actuador funciona y se ajusta según se indica a continuación: primero cuando se realiza la instalación del actuador, dependiendo de la carrera exigida, el instalador decide la posición de la pieza intercalada (12). Esto se puede realizar simplemente deslizando la tapa (11) en la dirección indicada por la flecha (F), de manera de descubrir el orificio de inspección (10) que esta por debajo, a través del cual, tal como está indicado en la figura 3, la pieza intercalada (12) se introduce en el espacio comprendido entre dos eslabones sucesivos de la cadena (2), denotados 2a y 2b nuevamente en la figura 3; una vez colocada en su lugar la tapa (11), la pieza intercalada (12) queda sostenida y guiada de manera estable en la guía horizontal superior (4). Obviamente el emplazamiento de la pieza intercalada (12) está determinado, con respecto al microinterruptor (15), de acuerdo con las especificaciones proporcionadas por el fabricante de todo el actuador.The actuator works and adjusts as indicated then: first when the installation of the actuator, depending on the required stroke, the installer decides the position of the interleaved piece (12). This can be done. simply by sliding the cover (11) in the direction indicated by the arrow (F), so as to discover the inspection hole (10) which is below, through which, as indicated in the Figure 3, the interleaved piece (12) is introduced into the space between two successive links of the chain (2), denoted 2a and 2b again in figure 3; once placed in your place the lid (11), the interleaved part (12) is held and stably guided in the upper horizontal guide (4). Obviously the location of the interleaved part (12) is determined, with respect to the microswitch (15), according to the specifications provided by the manufacturer of all the actuator

La presente invención puede ser sometida a numerosas variantes, todas englobadas dentro del concepto inventivo original. Además, todas las partes pueden ser reemplazadas por elementos técnicamente equivalentes.The present invention can be subjected to numerous variants, all encompassed within the inventive concept original. In addition, all parts can be replaced by technically equivalent elements.

Claims (3)

1. Actuador con carrera ajustable para impulsar dos unidades que se mueven en relación recíproca, del tipo que comprende una carcasa configurada tipo caja (1), la cual aloja un elemento flexible (2) que se envuelve dentro de dicha carcasa (1), el elemento flexible (2) siendo movido a través de medios de impulsión (3) que lo desenrollan y provocan que una sección predefinida del su extremo activo (6) salga de la carcasa (1); siendo posible vincular dicha carcasa (1) configurada tipo caja a la primera de las unidades y siendo posible vincular dicho extremo activo (6) a la segunda unidad; medios de detección (12 y 15) siendo previstos para el control del bloqueo de la carrera de desenrollado del elemento flexible (2) y que comprenden una pieza intercalada (12) que puede ser vinculada a un elemento flexible y un sensor (15) que detecta el paso de la pieza intercalada (12); la pieza intercalada (12) siendo extraíble del elemento flexible (2), y siendo vinculada de manera estable a lo largo de la longitud de este último de manera de ajustar la magnitud de la carrera de desenrollado, caracterizado por el hecho que la carcasa configurada tipo caja (1) tiene un orificio de inspección (10) que permite el acceso al elemento flexible (2) desde la parte externa de manera que la pieza intercalada (12) pueda ser extraída y vinculada al elemento flexible (2) incluso cuando el actuador está ensamblado y/o asociado a las unidades a mover, siendo posible cerrar el orificio de inspección (10) con una tapa (11).1. Actuator with adjustable stroke to drive two units that move in reciprocal relationship, of the type comprising a configured housing type box (1), which houses a flexible element (2) that is wrapped inside said housing (1), the flexible element (2) being moved through drive means (3) that unwind it and cause a predefined section of its active end (6) to exit the housing (1); it being possible to link said housing (1) configured as a box to the first of the units and it is possible to link said active end (6) to the second unit; detection means (12 and 15) being provided for the control of the unwinding stroke lock of the flexible element (2) and comprising an interleaved part (12) that can be linked to a flexible element and a sensor (15) that detects the passage of the interleaved piece (12); the interleaved part (12) being removable from the flexible element (2), and being stably linked along the length of the latter in order to adjust the magnitude of the unwind stroke, characterized by the fact that the housing configured Box type (1) has an inspection hole (10) that allows access to the flexible element (2) from the outside so that the interleaved part (12) can be removed and linked to the flexible element (2) even when the actuator is assembled and / or associated to the units to be moved, being possible to close the inspection hole (10) with a cover (11). 2. Actuador según la reivindicación 1, caracterizado pro el hecho que el elemento flexible (2) se compone de una cadena y la pieza intercalada (12) comprende una porción inferior ahusada (13), esta última siendo proyectada de manera que puedas ser insertada de manera estable en el espacio comprendido entre dos eslabones sucesivos (2a y 2b).2. Actuator according to claim 1, characterized in that the flexible element (2) is composed of a chain and the interleaved part (12) comprises a tapered lower portion (13), the latter being projected so that it can be inserted stably in the space between two successive links (2a and 2b). 3. Actuador según la reivindicación 1, caracterizado por el hecho que la pieza intercalada (12) comprende una porción superior configurada tipo leva (14) proyectada para ser interceptada por el sensor (15).3. Actuator according to claim 1, characterized in that the interleaved part (12) comprises a cam-shaped upper portion (14) designed to be intercepted by the sensor (15).
ES98830725T 1998-03-18 1998-12-02 ACTUATOR WITH ADJUSTABLE RACE. Expired - Lifetime ES2216264T3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO980038U 1998-03-18
IT98BO000038 IT244728Y1 (en) 1998-03-18 1998-03-18 ADJUSTABLE STROKE ACTUATOR.

Publications (1)

Publication Number Publication Date
ES2216264T3 true ES2216264T3 (en) 2004-10-16

Family

ID=11342799

Family Applications (1)

Application Number Title Priority Date Filing Date
ES98830725T Expired - Lifetime ES2216264T3 (en) 1998-03-18 1998-12-02 ACTUATOR WITH ADJUSTABLE RACE.

Country Status (3)

Country Link
EP (1) EP0943774B1 (en)
ES (1) ES2216264T3 (en)
IT (1) IT244728Y1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITPD20070083A1 (en) * 2007-03-12 2008-09-13 Topp S P A CORE BOX ENHANCED FOR ELECTRIC ACTUATORS FOR WINDOW AUTOMATION
CN101603395B (en) * 2009-07-24 2013-01-02 中国农业大学 Flexible rod-shaped chain link type door window opener
AU2010333719B2 (en) * 2009-12-18 2017-06-29 Pacific Holdings (Aust) Pty Ltd Chainwinder
FR2963046B1 (en) * 2010-07-21 2013-04-05 Somfy Sas ACTUATOR FOR PORTAL OR GARAGE DOOR
NZ618980A (en) * 2012-12-13 2015-01-30 Assa Abloy Australia Pty Ltd Window winder
CN121346663B (en) * 2025-12-19 2026-03-03 安徽见行科技有限公司 A travel detection device for a piezoelectric actuator

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4521993A (en) * 1983-08-08 1985-06-11 Truth Incorporated Chain operator for a window
US4945678A (en) * 1988-12-05 1990-08-07 Truth Incorporated Window operator

Also Published As

Publication number Publication date
EP0943774A3 (en) 2000-04-19
EP0943774B1 (en) 2004-03-10
ITBO980038U1 (en) 1999-09-18
IT244728Y1 (en) 2002-03-14
EP0943774A2 (en) 1999-09-22

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