EP0676784A1 - Dispositif d'un interrupteur de sécurité - Google Patents
Dispositif d'un interrupteur de sécurité Download PDFInfo
- Publication number
- EP0676784A1 EP0676784A1 EP95104621A EP95104621A EP0676784A1 EP 0676784 A1 EP0676784 A1 EP 0676784A1 EP 95104621 A EP95104621 A EP 95104621A EP 95104621 A EP95104621 A EP 95104621A EP 0676784 A1 EP0676784 A1 EP 0676784A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switch
- conductor track
- switch arrangement
- section
- track sections
- 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
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/02—Switches operated by change of position, inclination or orientation of the switch itself in relation to gravitational field
Definitions
- the invention relates to a switch arrangement for displaying the movement and the inclination of the switch arrangement.
- switches are activated by a movable actuating element. Movement is understood in the following to mean a parallel displacement of the switch arrangement, while an inclination is understood as a rotary movement about an axis.
- the Spanish utility model U 92 00 971 describes such a switch arrangement in which a switch is arranged in a housing which is actuated by a ball. Furthermore, the switch arrangement shown in utility model U 92 00 971 has an inclined plane as the bottom wall. The switch, which indicates inclination and movement, is assigned to an upper end of the inclined plane, towards which the ball rolls when the switch arrangement is inclined or displaced in parallel. At rest, the ball is on a lower portion of the inclined plane that is spaced from the switch. If the switch arrangement is moved or inclined, the actuating element rolls over the two conductor tracks of the switch and makes contact.
- a disadvantage of this arrangement is that both states of motion, parallel displacement and inclination, are indicated by a switch that the ball only reaches when it overcomes the inclined plane.
- the display is therefore not equally secure in all directions of movement and only works when the ball accelerates comparatively violently. Moving the actuating element therefore requires different amounts of force depending on the direction of movement.
- a switch arrangement which reliably indicates a movement of the switch arrangement even at low acceleration and which is of simple construction
- a switch arrangement with the characterizing features of claim 1.
- a second switch is provided with a is connected via a resistor chargeable capacitor, part of the switch arrangement.
- the term switch is used below either for a conductor track, the first and second conductor track sections of which are each connected to their own electrical supply line, or for several conductor tracks, the first and second conductor track sections of which are each connected to a common electrical supply line.
- This second switch works in such a way that when the conductor track sections of the switch are connected as a result of movement by the movable actuating element, a switching pulse is in any case emitted via the capacitor connected to this switch. If the conductor track sections of the switch are no longer connected as a result of the further movement of the movable actuating element, the capacitor is discharged and emits a next pulse when the conductor tracks are reconnected by the actuating element.
- the first switch functions as an on-off switch. If the conductor tracks of the first switch are not connected by the actuating element because the device is neither inclined nor moved, no switching signal is emitted. If the two conductor tracks are briefly connected by the actuating element as a result of movement, a short on-off pulse is emitted by the switch. When the switch arrangement is inclined, the actuating element bears against the conductor tracks of the first switch and thus switches the switch on. A permanent inclination of the switch arrangement is displayed.
- the object of claim 3 shows a switch arrangement with a particularly high response sensitivity even with movements with the lowest acceleration.
- the switch arrangement according to the invention for example in connection with a Counter (so-called timer) or a safety switch for an iron is used, so when the device - and thus the switch arrangement - is moved in parallel, at least the second switch is actuated, with stronger movement the first switch is actuated at short intervals by the ball rolling as a result of the movement .
- the first switch then emits switching pulses by switching it on and off; the second switch in connection with the capacitor always only emits switching impulses, because if the second switch is permanently closed, the capacitor saturates and none when the capacitor is fully charged Current flow through the second switch, the capacitor and the resistor is possible.
- the alternating on-off switching of the second switch leads to a charging and discharging of the capacitor.
- the switching impulses indicate that the device is in motion.
- the safety shutdown of the iron is always switched off. If the device is at rest, the ball is at a standstill and does not operate a switch. There are therefore no switching pulses that switch off the safety shutdown of the iron, so that the device is switched off after a predetermined time. If the ball accidentally closes the second switch during such a rest position, the capacitor saturates and then remains fully charged. This means that no more current flows through the capacitor and the IC also recognizes this position as "standstill", since movement is always associated with a current flow.
- the device If the device is placed vertically, it is moved beyond the predetermined angle of inclination and the ball is constantly in contact with the first switch. As long as the iron is in this position, the first switch is turned on, which operates the safety shutdown in such a way that the device is turned off after a predetermined, longer period.
- the bottom wall of the housing has a first flat section, which is followed by a second section which is inclined at a defined angle with respect to the first section.
- the second switch which indicates a movement of the switch arrangement, is assigned to the first section and the first switch, which indicates an inclination or movement of the switch arrangement, is assigned to the second section.
- the extent of the angle of inclination determines when an inclination of the arrangement is displayed, since the first switch is at the end of the second section arranged, which faces away from the first section. If the switch arrangement is inclined, the actuating element rolls in the direction of the second section. However, it only rolls up the inclined second section when the arrangement is moved vigorously or is moved beyond the angle of inclination. The first switch is therefore only actuated when the arrangement is inclined beyond the angle of inclination or moved violently, that is to say with great acceleration.
- the second switch is arranged on the first section of the bottom wall in such a way that even a slight parallel displacement of the switch arrangement with the smallest acceleration leads to the actuating element being set in motion on the first section and then between the first and second conductor track sections or between the first and makes contact with the second conductor track sections of the second switch, so that even the slightest movement of the switch arrangement is reliably displayed. If the device is at rest, none of the switches are actuated.
- the first and the second switch in this embodiment are each constructed from a plurality of conductor tracks, the first and second conductor track sections of the first and second switch each being connected to a common electrical supply line.
- the conductor tracks either extend vertically out of the bottom wall or are arranged in the bottom wall.
- a switch arrangement has a bottom wall which is provided with a cutout.
- the cutout has a first area with parallel side edges, which is adjoined by a second area, the side edges of which are convergent.
- the second switch is arranged on the parallel side edges of the first region and the first switch is arranged on the end of the second region which faces away from the first region.
- the actuating element is supported on the side edges of the cutout. If the switch arrangement is moved in parallel, the actuating element rolls on the side edges of the first area. It actuates the second switch on this one Embodiment according to claim 6 preferably consists of a plurality of conductor tracks, each with a first and a second conductor track section, the first conductor track sections abutting one side edge and the second conductor track sections on the opposite side edge.
- the actuating element makes contact between the first conductor track sections and the associated second conductor track sections, and the movement of the switch arrangement is indicated by switching pulses which are emitted by the capacitor.
- the use of several conductor tracks ensures high sensitivity. With slow movement, the actuating element remains in the first area of the bottom wall.
- the first switch is in turn preferably made up of a conductor track with a first and a second conductor track section.
- a cutout with converging side edges in the bottom wall of the housing is considered in its own right to be inventive according to claim 15, since a switch arrangement known from the prior art with only one switch, which is designed as an on-off switch, by an actuating element movable in such a section can be actuated. Starting from a central section with parallel side edges, such a cutout can also have two end sections with converging side edges.
- a plurality of conductor tracks consisting of first and second conductor track sections or, preferably, a conductor track consisting of a first and a second conductor track section as a second switch on the bottom wall of the switch arrangement.
- the two conductor track sections are elongated and raised educated. They preferably have a round or approximately round cross section.
- These two conductor track sections, which form the second switch, are arranged symmetrically with respect to a common axis and are so far apart from one another in their central regions that the movable actuating means, which is arranged between the conductor track sections, rests on the bottom wall in this region and can not make contact between the conductor track sections (rest position of the switch arrangement).
- End regions each adjoin these central regions of the conductor track sections.
- the end regions of two conductor track sections, which are opposite each other, converge to one another, so that the actuating element, when it is moved as a result of a parallel displacement to the end regions of the conductor track sections which are located more closely opposite one another, is supported on these conductor track sections and thus makes contact, so that the second Switch across the capacitor indicates movement.
- the first switch is arranged opposite an end region of the two conductor track sections. If the switch arrangement is moved, the actuating element must be raised from the bottom wall in order to be deflected from the central region and then lies on the two raised conductor track sections of the second switch. Up to the first switch, that is, to the end of the conductor track sections, however, it only moves with violent movement or when the arrangement is tilted. The more the arrangement is inclined, the further the actuating element rolls towards an end region of the conductor tracks. A degree of inclination can be defined by the extent of the convergence, the exceeding of which is reliably indicated, since the actuating element is securely in contact with the first switch if the inclination exceeds this angle.
- the first switch consists of two conductor track sections, each of which is provided with its own electrical supply line.
- a first conductor section of the first switch extends vertically out of the bottom wall and the contact of the first switch, with which this indicates an inclination of the arrangement, is established by the actuating element extending the conductor section extending perpendicularly out of the bottom wall with one of the other Bottom wall connects adjacent conductor track sections. At least one of the conductor track sections that form the second switch is also contacted in this switch arrangement when the first switch is actuated.
- This design of the switch arrangement is particularly simple to manufacture and already responds reliably to parallel displacements with the lowest acceleration, since the contact pressure of the actuating means on the two conductor tracks of the second switch is greatest at the moment of lifting off the bottom wall.
- a ball is preferably used as the actuating element according to claim 9.
- a steel ball with a silver-plated surface has proven to be particularly suitable.
- the conductor tracks are preferably produced with a gold-plated surface. With these surface coatings, the switch arrangement is particularly resistant to an aggressive environmental climate, for example against acid vapors or high air humidity and elevated temperatures.
- the housing of the switch arrangement will often be arranged on a circuit board which is designed, for example, for controlling a device.
- the printed circuit board is then designed as the bottom wall of the housing. This considerably simplifies the construction and assembly of the switch arrangement.
- a shutdown signal is generated, for example for an iron when the switch arrangement has been stationary for a certain minimum time.
- a second switch-off signal is generated when the switch arrangement is inclined by more than a certain inclination angle q.
- the switch-off signal can be generated after a longer period of time if the iron is switched off normally, that is to say in the vertical position, and is not used during this longer period.
- FIGS. 1 and 2 show a switch arrangement 2, which is arranged in a housing 3 with a bottom wall 4, side walls 6 and an upper wall 8.
- the housing 3 is made of insulating material, preferably plastic.
- Two pairs of conductor track sections IOa, b and 12a, b are inserted into the housing 3, each belonging to a second and a first switch 10, 12.
- the conductor track sections IOa, b and 12a, b extend from the bottom wall 4 to the top wall 8 and are each connected to their own electrical supply lines IIa, b and 13a, b.
- the bottom wall 4 has a first flat section 14, to which a second section 16 adjoins, which is inclined at an angle q (FIG. 1) to the first section 14.
- the second switch 10 is assigned to the first, flat section 14 of the bottom wall 4 and the first switch 12 is assigned to the second, inclined section 16 of the bottom wall 4.
- a ball 18 rolls on the bottom wall 4 and is held in the switch arrangement 2 by the side walls 6 and the top wall 8.
- FIG. 2 shows a top view of the arrangement of the conductor track sections IOa, b and 12a, b of the two switches 10 and 12.
- the axis XX marked in FIG. 2 denotes the axis about which the switch arrangement 2 is inclined when the first switch 12 is switched on, as is the case with FIGS. 1 and 2.
- the ball 18 is silver-plated and thus has an electrically conductive surface, which brings the gold-plated conductor track sections IOa, b and 12 a, b of the switches 10 and 12 into electrically conductive contact when it rests on two conductor track sections with two points on its surface. In the idle state, that is, when the switch arrangement is neither inclined nor moved, the ball 18 is located on the first section 14 of the switch arrangement 2 and does not actuate either of the switches 10, 12.
- the ball 18 rolls back and forth due to its inertia on the first section 14 and actuates the second switch 10 at short intervals by making contact between its conductor track sections IOa, IOb.
- the conductor track section IOb of the second switch 10 is connected to the conductor track section 12b of the first switch via a capacitor K, which is charged when the switch 2 is closed via the resistor R1. With increasing charge of the capacitor K, the current decreases until it finally becomes O when the capacitor is fully charged. This only applies to the current through the resistor R1.
- the current through the resistor R2 continues to flow, but is not registered by the IC due to the blocking effect of the capacitor K. Even when the second switch 10 is permanently closed, only a short current pulse is registered by the IC. Opens the second switch 10 again, the capacitor is discharged through the resistors R2 and R1. Since the direction of current flow is reversed when the capacitor K is discharged to charge the capacitor K, this current flow is not registered in front of the IC because of the other sign. In order to accelerate the discharge of the capacitor, the resistor R1, the diode D1 can be connected in parallel. When the capacitor is discharged, the resistor R 1 is short-circuited, when the capacitor K is charged via the second switch 10, the diode blocks. After the capacitor K has discharged, a current pulse can be registered by the IC by closing the second switch 10 again. By alternating the opening and closing of the second switch 10, the IC thus registers a sequence of current pulses.
- the capacitor K While the switch 12 is closed, the capacitor K is charged via the resistor R2. After opening the switch 12, the capacitor is discharged through the resistors R1 and R2. Because of the direction of current flow, the IC registers this discharge process as an extension of the current pulse. The discharge can be accelerated by the diode D2 be, which short-circuits the resistor R1 in this discharge process.
- FIGS. 3 and 4 show a second embodiment of the switch arrangement 2.
- the bottom wall 4 of the housing 2 has a cutout 20.
- the cutout 20 has a first section 20a with parallel side edges 21 and a second section 20b with converging side edges 23.
- the first switch 12 is arranged at the end of the second section 20b at which the side edges 23 are at the smallest distance from one another. This end is opposite to the first section 20a.
- the first switch 12 is constructed from a conductor track 12, consisting of two conductor track sections 12a, 12b, which extend parallel to the side walls 6.
- the second switch 10 is formed from a plurality of conductor tracks 15, 16 which extend across the cutout 20a.
- the first and second conductor track sections 15a, 16a; 15b, 16b are each with common supply lines 17a; 17b connected.
- the switch arrangement 2 When the switch arrangement 2 is moved, the ball 18 rolls back and forth in this cutout 20a and thereby touches the conductor track sections 15a, b; 16a, b of the conductor tracks 15, 16, which are arranged on the opposite side edges 21 of the cutout 20a.
- the second switch triggers 10 switching pulses. If the switch arrangement 2, ie the ball 18 is moved more violently, it rolls into the section 20b. It is raised, as can be seen from FIG.
- the switch arrangement 2 is inclined by the angle of inclination q, which can be determined by the degree of convergence with which the two side edges 23 of the section 20b run towards one another, the ball 18 lies against the conductor track sections 12a, b and switches on the first switch 12, as indicated in Fig. 4 by the dashed ball 18.
- the way in which the electrical circuit works is analogous to FIG. 2.
- the fact that the second switch consists of several conductor tracks merely means that switching pulses are given more frequently.
- FIGS. 5 and 6 show a third embodiment of the switch arrangement 2.
- Two round or approximately round gold-plated wires 22, 24 are arranged on a bottom wall 4 parallel to an axis CC symmetrically to the latter.
- the two wires 22, 24 form the mutually independent conductor track sections of the second switch 10.
- the central regions 22a, 24a of the two wires are spaced so far apart that the silver-plated ball 18 cannot make contact between the wires if, as shown in FIG Middle, that is, at rest. This position is shown in detail in Fig. 7a, which shows a section along the line DD of Fig. 5. If the ball 18 also bears against one of the wires 22a or 24a, there is still a gap a to the other wire 24a or 22a.
- the sections 22b, 24b of the two wires extend convergent to one another, that is to say the distance from the common axis of symmetry CC becomes smaller in the direction of movement of the ball 18.
- the ball 18 rolls up according to FIGS. 5 and 6 onto the converging sections 22b, 24b and thus triggers switching pulses from the second switch 10 which are emitted by the capacitor K.
- This contact position can be seen in detail from FIG. 7b, in which the ball 18 rests on the two sections 22b, 24b and is spaced apart from the bottom wall 4 by a distance b.
- the switch arrangement If the switch arrangement is moved or inclined more violently, the ball 18 rolls on the two wires 22, 24 as far as the first switch 12, which is arranged at one end of the two wires 22, 24.
- the switch 12 as an on-off switch is switched on in that the ball 18 bears against a metal plate 26 extending perpendicular to the bottom wall and against one of the conductor track sections 22 or 24 of the second switch 10.
- One of these two conductor track sections 22, 24 of the second switch 10 simultaneously forms a conductor track section of the first switch 10.
- the other conductor track section of the first switch 10 is formed by the metal plate 26.
- a corresponding circuit diagram is shown in Fig. 8. If the switch arrangement 2 is inclined beyond the inclination angle q, however, it is switched on permanently.
- FIGS. 5 and 6 shows a circuit diagram of the switch arrangement 2 according to the third embodiment according to FIGS. 5 and 6.
- the conductor track sections E2 and E3 are arranged as a second switch 10 in the bottom wall 4 and are swept by the ball 18 as a result of movement.
- the conductor track sections E1 and E2 form the first switch 12, which indicates movement and inclination.
- the conductor track sections E1 and E3 are connected according to Figures 2 and 8 to ground M through the leads 13b and IIb with a resistor R1 and R2, which are connected to each other via a capacitor K before the resistors R1 and R2.
- the conductor track section E2 is connected to a power IIa, which is connected to a terminal with positive voltage.
- This conductor track section E2 is both a component of the second switch 10, consisting of the conductor track sections E 2 and E3, and of the first switch 12, consisting of the conductor track sections E2 and E1.
- the line 13b between E1 and R2 goes to an input of an IC in which a time counting function is carried out, for example a Telefunken timer U 2608.
- the conductor track section E3 is also connected via line IIb to the same input of the IC .
- the mode of operation of the circuit is identical to the function according to FIG. 2.
- the conductor track section E3 corresponds to the conductor track section IOb
- the conductor track section E1 corresponds to the conductor track section 12b
- the conductor track section E2 corresponds to the conductor track sections IOa and 12a. If the conductor track sections E1 and E3 are dimensioned such that both the second switch 10 and the first switch 12 can be closed, the following mode of operation results.
- the second switch 10 is first closed.
- the capacitor K is charged via the resistor R2. This is registered by the IC analogously to the description of FIG.
- the capacitor K is discharged again.
- this can be registered by the IC again, as described.
- a switch arrangement 2 for example in an iron, is connected to such a counting device IC or a timer, then the switch arrangement 2 indicates the movement and inclination of an iron (not shown) or other electrical device.
- the ball 18 rolls on the conductor track sections of the second switch 10, so that the latter issues switching pulses in rapid succession via the capacitor K.
- These switching pulses always reset the timer counter IC of the timer to "ZERO" (so-called reset). After each reset, the counter IC starts counting again. If it reaches a predetermined end time, e.g. B. 30 seconds, because no further switching pulses are received, this is due to the fact that the device is not moved.
- a predetermined end time e.g. B. 30 seconds
- the first switch 12 also indicates a movement of the iron by briefly “tapping” the conductor track sections E1, E2. However, as described above, this "tapping" is only triggered when the movement is comparatively violent. If the device is not moved, the first switch 10 remains switched off. If the device is inclined beyond the inclination angle q, the ball 18 rests on the first switch 12 and switches it on. When switch 12 is switched on, the timer counter IC is not reset, but the device is not switched off even after 30 seconds. Rather, it is assumed that the user has turned off the device. When the first switch 12 is switched on, the iron is therefore only after a longer period, for. B. 6 or 8 minutes, because the corresponding angle of inclination q is typically exceeded when the iron is turned off in the vertical position. In this case, a second shutdown signal is generated.
Landscapes
- Switches Operated By Changes In Physical Conditions (AREA)
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
- Mechanisms For Operating Contacts (AREA)
- Control Of Combustion (AREA)
- Air Bags (AREA)
- Switch Cases, Indication, And Locking (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4412294 | 1994-04-09 | ||
DE4412294A DE4412294A1 (de) | 1994-04-09 | 1994-04-09 | Sicherheitsabschaltung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0676784A1 true EP0676784A1 (fr) | 1995-10-11 |
EP0676784B1 EP0676784B1 (fr) | 1997-11-26 |
Family
ID=6515021
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95104621A Expired - Lifetime EP0676784B1 (fr) | 1994-04-09 | 1995-03-29 | Dispositif d'un interrupteur de sécurité |
Country Status (5)
Country | Link |
---|---|
US (1) | US5602429A (fr) |
EP (1) | EP0676784B1 (fr) |
AT (1) | ATE160648T1 (fr) |
DE (2) | DE4412294A1 (fr) |
ES (1) | ES2110272T3 (fr) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5777290A (en) * | 1996-07-08 | 1998-07-07 | Harley-Davidson Motor Company | Bank angle sensor |
DE29707453U1 (de) * | 1997-04-24 | 1997-06-26 | Lebsanft, Willy, 72669 Unterensingen | Bügelgerät |
JP3687285B2 (ja) * | 1997-07-02 | 2005-08-24 | カシオ計算機株式会社 | 傾き検出装置 |
DE19805342A1 (de) * | 1998-02-11 | 1999-08-12 | Falk Dziobaka | Brand- und Sengschutzvorrichtung für Bügeleisen |
JP4270647B2 (ja) * | 1999-05-31 | 2009-06-03 | ボールセミコンダクター株式会社 | 傾斜計 |
KR100325229B1 (ko) * | 1999-07-28 | 2002-03-04 | 이계안 | 자동 변속기 차량의 급발진 방지장치 |
DE19960972B4 (de) * | 1999-12-17 | 2009-08-20 | Robert Bosch Gmbh | Schaltungsanordnung zur Spannungsversorgung mobiler elektrischer Verbraucher |
US6444135B1 (en) | 2000-01-14 | 2002-09-03 | Ball Semiconductor, Inc. | Method to make gas permeable shell for MEMS devices with controlled porosity |
US20020132113A1 (en) * | 2000-01-14 | 2002-09-19 | Ball Semiconductor, Inc. | Method and system for making a micromachine device with a gas permeable enclosure |
US6198059B1 (en) * | 2000-06-09 | 2001-03-06 | Tien-Ming Jou | Tilt switch |
US20070034090A1 (en) * | 2005-08-08 | 2007-02-15 | Hendrickson Thomas L Jr | Household Appliance Warning/Alert Device |
US7319200B2 (en) * | 2006-06-02 | 2008-01-15 | Tien-Ming Chou | Jerking-initiated switch |
US7411140B1 (en) * | 2006-07-27 | 2008-08-12 | Muriel G Davison | Inertial mass detection device |
DE102006043264A1 (de) * | 2006-09-11 | 2008-03-27 | SCHÜCO International KG | Fenstergriff mit integrierter Detektierung der Schaltposition |
US7473858B1 (en) | 2006-12-01 | 2009-01-06 | Mercury Displacement Industries, Inc. | Movement detecting device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2604458A1 (fr) * | 1986-09-25 | 1988-04-01 | Bernardi Elvio | Dispositif de securite pour fer a repasser et fer a repasser utilisant un tel dispositif |
DE8908132U1 (de) * | 1989-07-04 | 1989-08-24 | Hellmuth jun., Karl, 73266 Bissingen | Elektrischer Schalter für bewegliche Geräte oder Geräteteile |
US4980575A (en) * | 1990-04-10 | 1990-12-25 | Sensormatic Electronics Corporation | Motion sensor and detection system |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3646543A (en) * | 1969-02-04 | 1972-02-29 | Systron Donner Corp | Sensing assembly |
DE2228683C2 (de) * | 1972-06-13 | 1982-01-21 | Artur 7060 Schorndorf Föhl | Beschleunigungs- und verzögerungsabhängige, elektrische Schaltvorrichtung zum Einbau in Fahrzeuge |
US3879703A (en) * | 1973-07-11 | 1975-04-22 | Gte Sylvania Inc | Tilt sensor |
DE2638885A1 (de) * | 1976-08-28 | 1978-03-02 | Braun Ag | Umschalter fuer digitaluhren |
US4686352B1 (en) * | 1984-04-27 | 1993-12-14 | Sunbeam Corporation | Electronic pressing iron |
US5198740A (en) * | 1989-10-04 | 1993-03-30 | University Of Utah Research Foundation | Sliding contact mechanical/electrical displacement transducer |
DE9017622U1 (de) * | 1990-06-02 | 1991-03-28 | Zumtobel Ag, Dornbirn | Neigungsschalter für Stehleuchten |
DE9103911U1 (de) * | 1991-03-30 | 1991-06-06 | Lemken, Hartmut, 2000 Norderstedt | Elektrischer Kippschließer |
US5209343A (en) * | 1992-01-21 | 1993-05-11 | Comus International | Electrical tilt switch |
US5473322A (en) * | 1992-07-24 | 1995-12-05 | Schlumberger Industries, Inc. | Apparatus and method for sensing tampering with a utility meter |
US5410115A (en) * | 1993-10-22 | 1995-04-25 | Yazaki Corporation | Rod-type switch |
-
1994
- 1994-04-09 DE DE4412294A patent/DE4412294A1/de not_active Ceased
-
1995
- 1995-03-29 ES ES95104621T patent/ES2110272T3/es not_active Expired - Lifetime
- 1995-03-29 DE DE59501019T patent/DE59501019D1/de not_active Expired - Fee Related
- 1995-03-29 EP EP95104621A patent/EP0676784B1/fr not_active Expired - Lifetime
- 1995-03-29 AT AT95104621T patent/ATE160648T1/de not_active IP Right Cessation
- 1995-04-06 US US08/417,925 patent/US5602429A/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2604458A1 (fr) * | 1986-09-25 | 1988-04-01 | Bernardi Elvio | Dispositif de securite pour fer a repasser et fer a repasser utilisant un tel dispositif |
DE8908132U1 (de) * | 1989-07-04 | 1989-08-24 | Hellmuth jun., Karl, 73266 Bissingen | Elektrischer Schalter für bewegliche Geräte oder Geräteteile |
US4980575A (en) * | 1990-04-10 | 1990-12-25 | Sensormatic Electronics Corporation | Motion sensor and detection system |
Also Published As
Publication number | Publication date |
---|---|
DE59501019D1 (de) | 1998-01-08 |
EP0676784B1 (fr) | 1997-11-26 |
DE4412294A1 (de) | 1995-10-12 |
ES2110272T3 (es) | 1998-02-01 |
ATE160648T1 (de) | 1997-12-15 |
US5602429A (en) | 1997-02-11 |
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