EP0829891A2 - Method for installing a multi-layer functional element in a forming material - Google Patents
Method for installing a multi-layer functional element in a forming material Download PDFInfo
- Publication number
- EP0829891A2 EP0829891A2 EP97115443A EP97115443A EP0829891A2 EP 0829891 A2 EP0829891 A2 EP 0829891A2 EP 97115443 A EP97115443 A EP 97115443A EP 97115443 A EP97115443 A EP 97115443A EP 0829891 A2 EP0829891 A2 EP 0829891A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- functional element
- shaping material
- during
- intermediate space
- pressure
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2213/00—Venting
- H01H2213/002—Venting with external pressure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2223/00—Casings
- H01H2223/01—Mounting on appliance
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2229/00—Manufacturing
- H01H2229/044—Injection moulding
Definitions
- the present invention relates to a method for introducing a functional element in film construction into a shaping material.
- Functional elements in foil construction e.g. Membrane switches, film pressure sensors or the like generally comprise at least two essentially elastic film layers which are arranged at a certain distance from one another. This happens e.g. by means of a spacer which is arranged around the active area of the functional element and on which the two film layers are glued with their respective edges. In the active area of the functional element, various contact arrangements are applied to the film layers, between which an electrical contact is made when the two film layers are pressed together, so that the switching element is triggered. In order to ensure a high probability of response for such functional elements at very different ambient pressures, the functional elements also generally have ventilation channels that connect the space between the two film layers to the environment and thus enable pressure compensation between the environment and the space.
- switching elements When such switching elements are introduced into a shaping material, for example when foaming into a foam that is injected into a mold, the shaping material first exerts pressure on the switching element so that it is triggered. Only during the subsequent solidification of the shaping material, for example by curing, drying or cooling, this undergoes relaxation and the pressure exerted on the switching element gradually decreases, so that the switching element should open again due to the elasticity of the film layers.
- the elasticity of the film layers is not sufficient to push back the shaping material during its relaxation and thus to enable the switching element to be opened. As a result, these switching elements remain in the released state after introduction into a shaping material and the subsequent solidification of the material and are therefore inoperable.
- the object of the present invention is therefore to propose a method for introducing a pressure-sensitive functional element in film construction into a shaping material, the functional element having at least two elastic, opposing foils between which an intermediate space is formed, in which the functional element is triggered during insertion is largely prevented.
- This object is achieved in that the space is sealed from the environment during the introduction of the functional element in the shaping material, and that after the solidification of the shaping material at least one pressure compensation opening is created in the functional element, which connects the space with the environment.
- Sealing the intermediate space from the environment prevents pressure equalization between the environment and the intermediate space.
- a counterpressure thus builds up in the intermediate space, which prevents the intermediate space from being completely compressed.
- the shaping material relaxes during its solidification, the back pressure prevailing in the intermediate space, together with the elasticity of the film layers, causes the shaping material to be pushed back and the functional element to return to its original shape. Is the shaping material solidified, for example by curing, drying or cooling, a pressure equalization opening is created in the functional element, which connects the intermediate space with the surroundings, as a result of which the functional element obtains its full functionality with good response behavior.
- solidification of the shaping material does not mean that the material solidifies into a hard block, but rather solidification here merely means that the material takes on a corresponding shape and maintains it without external influence.
- the shaping material can definitely be a soft, flexible molded part after solidification.
- the effect of the counterpressure is advantageously increased if the functional element is introduced into the shaping material at elevated temperature.
- the gas enclosed in the intermediate space heats up due to the higher ambient temperature and consequently experiences a thermal expansion.
- the pressure in the intermediate space rises further, and triggering of the functional element can be effectively avoided even at higher process pressures.
- the at least one pressure equalization opening is designed as a ventilation channel between the foils, the ventilation channel being closed during the insertion process and being opened after the shaping material has solidified.
- a ventilation duct can already be carried out during the manufacture of the functional element in the spacer between the film layers or in one of the film layers itself and can advantageously be extended outside the functional element, so that the outer end of the ventilation duct protrudes laterally from the functional element.
- Such a configuration simplifies the later opening of the ventilation duct, in particular when the outer end of the ventilation duct protrudes from the shaping material after the functional element has been introduced.
- the ventilation duct is disconnected during the insertion process.
- This pinching can, for example, by a removable clamp is made, which compresses the ventilation duct at its outer end.
- the ventilation duct can be closed with a mechanical plug during the insertion process. This can simply be inserted into the outer end of the ventilation duct, so that the opening of the duct is blocked.
- the mechanical sealing plug preferably extends into the active area of the functional element. In this way, the mechanical locking plug additionally acts as a mechanical spacer, which effectively prevents the various film layers of the functional element from coming into contact with one another during the introduction of the functional element into a shaping material.
- the ventilation duct can be taped off during the insertion process.
- the ventilation duct is opened after the shaping material has been fixed in place, preferably by cutting off the glued end of the ventilation duct.
- the intermediate space of the functional element is preferably pressurized with a compressed gas before the ventilation duct is closed.
- a compressed gas which counteracts a compression of the functional element. This effectively prevents the functional element from being triggered even at higher process pressures during insertion.
- a plurality of functional elements are introduced into a shaping material at the same time.
- the gaps between a plurality of functional elements are connected to one another by a common connecting channel, and after the shaping material has solidified, at least one pressure compensation opening is created in one of the functional elements.
- the method according to the invention can be used, for example, for foaming a film pressure sensor into a foam-like material.
- the ventilation duct is preferably designed in such a way that its outer end protruding from the functional element is also accessible after introduction into the shaping material, and thus the opening of the ventilation duct after the shaping has solidified Material is much easier.
Abstract
Description
Die vorliegende Erfindung betrifft ein Verfahren zum Einbringen eines Funktionselementes in Folienbauweise in ein formgebendes Material.The present invention relates to a method for introducing a functional element in film construction into a shaping material.
Funktionselemente in Folienbauweise, wie z.B. Membranschalter, Foliendrucksensoren o.ä., umfassen im allgemeinen mindestens zwei im wesentlichen elastische Folienschichten, die in einem gewissen Abstand zueinander angeordnet sind. Dies geschieht z.B. mittels eines Abstandhalters, der um den aktiven Bereich des Funktionselementes herum angeordnet ist und auf den die beiden Folienschichten mit ihren jeweiligen Rändern aufgeklebt sind. In dem aktiven Bereich des Funktionselementes sind auf die Folienschichten verschiedene Kontaktanordungen aufgebracht zwischen denen beim Zusammendrücken der beiden Folienschichten ein elektrischer Kontakt hergestellt wird, so daß das Schaltelement ausgelöst wird. Damit eine hohe Ansprechwahrscheinlichkeit für solche Funktionselemente bei ganz unterschiedlichen Umgebungsdrücken gewährleistet ist, weisen die Funktionselemente darüber hinaus im allgemeinen Ventilationskanäle auf, die den Zwischenraum zwischen den beiden Folienschichten mit der Umgebung verbinden und so einen Druckausgleich zwischen der Umgebung und dem Zwischenraum ermöglichen. Beim Nachlassen des Drucks auf die Folienschichten nehmen diese aufgrund ihrer Elastizität wiederum ihre beabstandete Position zueinander ein und der elektrische Kontakt zwischen den verschiedenen Kontaktanordnungen wird unterbrochen. Ein solches Funktionselement ist zum Beispiel in der US-A-4,314,227 beschrieben, die einen Foliendrucksensor mit druckabhängigem Widerstand betrifft.Functional elements in foil construction, e.g. Membrane switches, film pressure sensors or the like generally comprise at least two essentially elastic film layers which are arranged at a certain distance from one another. This happens e.g. by means of a spacer which is arranged around the active area of the functional element and on which the two film layers are glued with their respective edges. In the active area of the functional element, various contact arrangements are applied to the film layers, between which an electrical contact is made when the two film layers are pressed together, so that the switching element is triggered. In order to ensure a high probability of response for such functional elements at very different ambient pressures, the functional elements also generally have ventilation channels that connect the space between the two film layers to the environment and thus enable pressure compensation between the environment and the space. When the pressure on the film layers is relieved, they again assume their spaced apart position due to their elasticity and the electrical contact between the different contact arrangements is interrupted. Such a functional element is described, for example, in US-A-4,314,227, which relates to a film pressure sensor with a pressure-dependent resistor.
Beim Einbringen derartiger Schaltelemente in ein formgebendes Material, zum Beispiel beim Einschäumen in einen Schaumstoff der in eine Form eingespritzt wird, übt das formgebende Material zunächst einen Druck auf das Schaltelement aus, so daß dieses ausgelöst wird. Erst während der anschließenden Verfestigung des formgebenden Materials, z.B. durch Aushärten, Trocknen oder Abkühlen, erfährt dieses eine Relaxation und der auf das Schaltelement ausgeübte Druck läßt allmählich nach, so daß das Schaltelement aufgrund der Elastizität der Folienschichten wieder öffnen sollte. Allerdings kommt es insbesondere bei besonders feinfühligen Schaltelementen häufig vor, daß die Elastizität der Folienschichten nicht ausreicht, um das formgebende Material bei dessen Relaxation zurückzudrängen und so ein Öffnen des Schaltelementes zu ermöglichen. Hierdurch verbleiben diese Schaltelemente nach dem Einbringen in ein formgebendes Material und der anschließenden Verfestigung des Materials in dem ausgelösten Zustand und sind somit funktionsunfähig.When such switching elements are introduced into a shaping material, for example when foaming into a foam that is injected into a mold, the shaping material first exerts pressure on the switching element so that it is triggered. Only during the subsequent solidification of the shaping material, for example by curing, drying or cooling, this undergoes relaxation and the pressure exerted on the switching element gradually decreases, so that the switching element should open again due to the elasticity of the film layers. However, particularly in the case of particularly sensitive switching elements, it is often the case that the elasticity of the film layers is not sufficient to push back the shaping material during its relaxation and thus to enable the switching element to be opened. As a result, these switching elements remain in the released state after introduction into a shaping material and the subsequent solidification of the material and are therefore inoperable.
Aufgabe der vorliegenden Erfindung ist es folglich, ein Verfahren zum Einbringen eines drucksensiblen Funktionselementes in Folienbauweise in ein formgebendes Material vorzuschlagen, wobei das Funktionselement mindestens zwei elastische, sich gegenüberliegende Folien aufweist zwischen denen ein Zwischenraum ausgebildet ist, bei dem ein Auslösen des Funktionselementes während des Einbringens weitestgehend verhindert wird.The object of the present invention is therefore to propose a method for introducing a pressure-sensitive functional element in film construction into a shaping material, the functional element having at least two elastic, opposing foils between which an intermediate space is formed, in which the functional element is triggered during insertion is largely prevented.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß während dem Einbringen des Funktionselementes in das formgebende Material der Zwischenraum gegenüber der Umgebung abgedichtet ist, und daß nach dem Verfestigen des formgebenden Materials mindestens eine Druckausgleichsöffnung in dem Funktionselement geschaffen wird, die den Zwischenraum mit der Umgebung verbindet.This object is achieved in that the space is sealed from the environment during the introduction of the functional element in the shaping material, and that after the solidification of the shaping material at least one pressure compensation opening is created in the functional element, which connects the space with the environment.
Durch das Abdichten des Zwischenraumes gegenüber der Umgebung wird ein Druckausgleich zwischen der Umgebung und dem Zwischenraum verhindert. Beim Zusammendrücken der Folienschichten des Funktionselementes durch einen von außen auf das Funktionselement wirkenden Druck baut sich in dem Zwischenraum somit ein Gegendruck auf, der ein völliges Zusammendrücken des Zwischenraumes verhindert. Bei der Relaxation des formgebenden Materials während seiner Verfestigung bewirkt der in dem Zwischenraum herrschende Gegendruck zusammen mit der Elastizität der Folienschichten, daß das formgebende Material zurückgedrängt wird und das Funktionselement seine ursprüngliche Form wieder annimmt. Ist das formgebende Material verfestigt, z.B. durch Aushärten, Trocknen oder Abkühlen, wird eine Druckausgleichsöffnung in dem Funktionselement geschaffen, die den Zwischenraum mit der Umgebung verbindet, wodurch das Funktionselement seine volle Funktionsfähigkeit mit gutem Ansprechverhalten erhält. Es ist anzumerken, daß in diesem Zusammenhang eine Verfestigung des formgebenden Materials nicht bedeutet, daß das Material zu einem harten Block erstarrt, sondern verfestigen bedeutet hier lediglich das Material eine entsprechende Form annimmt und diese ohne äußere Einwirkung beibehält. Mit anderen Worten, das formgebende Material kann nach dem Verfestigen durchaus ein weiches, flexibles Formteil darstellen.Sealing the intermediate space from the environment prevents pressure equalization between the environment and the intermediate space. When the film layers of the functional element are pressed together by a pressure acting on the functional element from the outside, a counterpressure thus builds up in the intermediate space, which prevents the intermediate space from being completely compressed. When the shaping material relaxes during its solidification, the back pressure prevailing in the intermediate space, together with the elasticity of the film layers, causes the shaping material to be pushed back and the functional element to return to its original shape. Is the shaping material solidified, for example by curing, drying or cooling, a pressure equalization opening is created in the functional element, which connects the intermediate space with the surroundings, as a result of which the functional element obtains its full functionality with good response behavior. It should be noted that in this connection, solidification of the shaping material does not mean that the material solidifies into a hard block, but rather solidification here merely means that the material takes on a corresponding shape and maintains it without external influence. In other words, the shaping material can definitely be a soft, flexible molded part after solidification.
Es ist zu bemerken, daß der Effekt des Gegendrucks vorteilhaft verstärkt wird, wenn das Einbringen des Funktionselementes in das formgebende Material bei erhöhter Temperatur stattfindet. Das in dem Zwischenraum eingeschlossene Gas erwärmt sich aufgrund der höheren Umgebungstemperatur und erfährt infolgedessen eine thermische Ausdehnung. Hierdurch steigt der Druck in dem Zwischenraum weiter an, und ein Auslösen des Funktionselementes kann selbst bei höheren Prozessdrücken wirksam vermieden werden.It should be noted that the effect of the counterpressure is advantageously increased if the functional element is introduced into the shaping material at elevated temperature. The gas enclosed in the intermediate space heats up due to the higher ambient temperature and consequently experiences a thermal expansion. As a result, the pressure in the intermediate space rises further, and triggering of the functional element can be effectively avoided even at higher process pressures.
In einer bevorzugten Ausführung ist die mindestens eine Druckausgleichsöffnung als Ventilationskanal zwischen den Folien ausgebildet, wobei der Ventilationskanal während des Einbringvorgangs verschlossen ist und nach dem Verfestigen des formgebenden Materials geöffnet wird. Ein derartiger Ventilationskanal kann bereits bei der Herstellung des Funktionselementes in dem Abstandhalter zwischen den Folienschichten oder in einer der Folienschichten selbst ausgeführt werden und vorteilhaft außerhalb des Funktionselementes verlängert werden, so daß das äußere Ende des Ventilationskanals seitlich aus dem Funktionselement hervorsteht. Eine derartige Ausgestaltung vereinfacht das spätere Öffnen des Ventilationskanals, insbesondere dann, wenn das äußere Ende des Ventilationskanals nach dem Einbringen des Funktionselementes in das formgebende Material aus diesem hervorsteht.In a preferred embodiment, the at least one pressure equalization opening is designed as a ventilation channel between the foils, the ventilation channel being closed during the insertion process and being opened after the shaping material has solidified. Such a ventilation duct can already be carried out during the manufacture of the functional element in the spacer between the film layers or in one of the film layers itself and can advantageously be extended outside the functional element, so that the outer end of the ventilation duct protrudes laterally from the functional element. Such a configuration simplifies the later opening of the ventilation duct, in particular when the outer end of the ventilation duct protrudes from the shaping material after the functional element has been introduced.
In einer ersten Variante des Verfahrens wird der Ventilationskanal während des Einbringvorgangs abgeklemmt. Dieses Abklemmen kann zum Beispiel durch eine abnehmbare Klammer erfolgen, die den Ventilationskanal an seinem äußeren Ende zusammenpreßt.In a first variant of the method, the ventilation duct is disconnected during the insertion process. This pinching can, for example, by a removable clamp is made, which compresses the ventilation duct at its outer end.
In einer weiteren Variante des Verfahrens kann der Ventilationskanal während des Einbringvorgangs mit einem mechanischen Verschlußstopfen verschlossen werden. Dieser kann einfach in das äußere Ende des Ventilationskanales eingeschoben werden, so daß die Öffnung des Kanals verstopft wird. Dabei reicht der mechanische Verschlußstopfen bevorzugt bis in den aktiven Bereich des Funktionselementes hinein. Auf diese Weise wirkt der mechanische Verrschlußstopfen zusätzlich als mechanischer Abstandshalter, der während dem Einbringen des Funktionselementes in ein formgebendes Material ein Aufeinandertreffen der verschiedenen Folienschichten des Funktionselementes wirksam verhindert.In a further variant of the method, the ventilation duct can be closed with a mechanical plug during the insertion process. This can simply be inserted into the outer end of the ventilation duct, so that the opening of the duct is blocked. The mechanical sealing plug preferably extends into the active area of the functional element. In this way, the mechanical locking plug additionally acts as a mechanical spacer, which effectively prevents the various film layers of the functional element from coming into contact with one another during the introduction of the functional element into a shaping material.
Alternativ kann der Ventilationskanal während des Einbringvorgangs abgeklebt werden. In diesem Fall erfolgt das Öffnen des Ventilationskanales nach abgeschlossener Fixierung des formgebenden Materials bevorzugt durch Abschneiden des verklebten Endes des Ventilationskanales.Alternatively, the ventilation duct can be taped off during the insertion process. In this case, the ventilation duct is opened after the shaping material has been fixed in place, preferably by cutting off the glued end of the ventilation duct.
Unabhängig von der Verschlußart des Ventilationskanals, wird der Zwischenraum des Funktionselementes vor dem Verschließen des Ventilationskanals bevorzugt mit einem Druckgas beaufschlagt. Dadurch herrscht in dem Zwischenraum ein gegenüber der Umgebung erhöhter Innendruck, der einem Zusammendrücken des Funktionselementes verstärkt entgegenwirkt. Hierdurch kann ein Auslösen des Funktionselementes selbst bei höheren Prozessdrücken während des Einbringens wirksam vermieden werden.Regardless of the type of closure of the ventilation duct, the intermediate space of the functional element is preferably pressurized with a compressed gas before the ventilation duct is closed. As a result, there is an increased internal pressure in the intermediate space in relation to the environment, which counteracts a compression of the functional element. This effectively prevents the functional element from being triggered even at higher process pressures during insertion.
In einer bevorzugten Ausführung des Verfahrens werden mehrere Funktionselemente gleichzeitig in ein formgebendes Material eingebracht. Hierbei sind die Zwischenräume mehrerer Funktionselemente durch einen gemeinsamen Verbindungskanal untereinander verbunden, und nach dem Verfestigen des formgebenden Material wird mindestens eine Druckausgleichsöffnung in einem der Funktionselemente geschaffen.In a preferred embodiment of the method, a plurality of functional elements are introduced into a shaping material at the same time. Here, the gaps between a plurality of functional elements are connected to one another by a common connecting channel, and after the shaping material has solidified, at least one pressure compensation opening is created in one of the functional elements.
Das erfindungsgemäße Verfahren kann zum Beispiel zum Einschäumen eines Foliendrucksensors in ein schaumstoffartiges Material angewandt werden.The method according to the invention can be used, for example, for foaming a film pressure sensor into a foam-like material.
Es ist zu bemerken, daß bei sämtlichen Varianten des oben beschriebenen Verfahrens der Ventilationskanal bevorzugt derart ausgelegt ist, daß sein äußeres, aus dem Funktionselement hervorstehende Ende auch nach dem Einbringen in das formgebende Material zugänglich ist und so das Öffnen des Ventilationskanals nach dem Verfestigen des formgebenden Materials wesentlich erleichtert wird.It should be noted that in all variants of the method described above, the ventilation duct is preferably designed in such a way that its outer end protruding from the functional element is also accessible after introduction into the shaping material, and thus the opening of the ventilation duct after the shaping has solidified Material is much easier.
Claims (9)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU88810 | 1996-09-11 | ||
| LU88810A LU88810A1 (en) | 1996-09-11 | 1996-09-11 | Method for introducing a functional element in film construction into a shaping material |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0829891A2 true EP0829891A2 (en) | 1998-03-18 |
| EP0829891A3 EP0829891A3 (en) | 1998-10-21 |
| EP0829891B1 EP0829891B1 (en) | 2004-03-03 |
Family
ID=19731623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19970115443 Expired - Lifetime EP0829891B1 (en) | 1996-09-11 | 1997-09-06 | Method for installing a multi-layer functional element in a forming material |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0829891B1 (en) |
| DE (1) | DE59711360D1 (en) |
| ES (1) | ES2216089T3 (en) |
| LU (1) | LU88810A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2866151A1 (en) * | 2004-02-11 | 2005-08-12 | Faurecia Sieges Automobile | Seat occupant presence sensor for motor vehicle, has flexible units adapted so that conducting portions contact due to external pressure to circulate current, and opening to access internal space between inner sides of units from outside |
| DE10303962B4 (en) * | 2002-02-04 | 2012-02-23 | Sanyo Electric Co., Ltd. | Electronic controller for outdoor equipment |
| WO2012042465A1 (en) | 2010-09-29 | 2012-04-05 | Firex S.R.L. | Mixing or cutting machine, particularly for food processing, operating with planetary shaft |
| US8410386B2 (en) | 2008-08-01 | 2013-04-02 | Abb Technology Ag | Cam disk and spring excursion switch for a stored-energy spring mechanism and stored-energy spring mechanism |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004043578B4 (en) * | 2004-07-12 | 2007-11-08 | Diehl Ako Stiftung & Co. Kg | Control panel for an electrical device and method for making a control panel |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4415780A (en) * | 1981-05-28 | 1983-11-15 | Rogers Corporation | Keyboard with edge vent |
| JPS62167030A (en) * | 1986-01-17 | 1987-07-23 | Sekisui Plastics Co Ltd | Insert molding of hollow molded part |
-
1996
- 1996-09-11 LU LU88810A patent/LU88810A1/en unknown
-
1997
- 1997-09-06 EP EP19970115443 patent/EP0829891B1/en not_active Expired - Lifetime
- 1997-09-06 DE DE59711360T patent/DE59711360D1/en not_active Expired - Fee Related
- 1997-09-06 ES ES97115443T patent/ES2216089T3/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4415780A (en) * | 1981-05-28 | 1983-11-15 | Rogers Corporation | Keyboard with edge vent |
| JPS62167030A (en) * | 1986-01-17 | 1987-07-23 | Sekisui Plastics Co Ltd | Insert molding of hollow molded part |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 012, no. 001 (M-656), 6. Januar 1988 & JP 62 167030 A (SEKISUI PLASTICS CO LTD), 23. Juli 1987 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10303962B4 (en) * | 2002-02-04 | 2012-02-23 | Sanyo Electric Co., Ltd. | Electronic controller for outdoor equipment |
| FR2866151A1 (en) * | 2004-02-11 | 2005-08-12 | Faurecia Sieges Automobile | Seat occupant presence sensor for motor vehicle, has flexible units adapted so that conducting portions contact due to external pressure to circulate current, and opening to access internal space between inner sides of units from outside |
| US8410386B2 (en) | 2008-08-01 | 2013-04-02 | Abb Technology Ag | Cam disk and spring excursion switch for a stored-energy spring mechanism and stored-energy spring mechanism |
| WO2012042465A1 (en) | 2010-09-29 | 2012-04-05 | Firex S.R.L. | Mixing or cutting machine, particularly for food processing, operating with planetary shaft |
| DE202011110641U1 (en) | 2010-09-29 | 2015-08-03 | Firex S.R.L. | Mixing or cutting machine, in particular for food processing, working with a planetary shaft |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59711360D1 (en) | 2004-04-08 |
| EP0829891B1 (en) | 2004-03-03 |
| LU88810A1 (en) | 1998-03-11 |
| ES2216089T3 (en) | 2004-10-16 |
| EP0829891A3 (en) | 1998-10-21 |
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