EP0168378B1 - Thermal switch with a temperature detector formed by a bimetallic snap disc - Google Patents
Thermal switch with a temperature detector formed by a bimetallic snap disc Download PDFInfo
- Publication number
- EP0168378B1 EP0168378B1 EP85890128A EP85890128A EP0168378B1 EP 0168378 B1 EP0168378 B1 EP 0168378B1 EP 85890128 A EP85890128 A EP 85890128A EP 85890128 A EP85890128 A EP 85890128A EP 0168378 B1 EP0168378 B1 EP 0168378B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spring
- bimetallic snap
- snap disk
- switch
- bimetallic
- 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
Links
- 230000001747 exhibiting effect Effects 0.000 claims 1
- 230000001960 triggered effect Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000013011 mating Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/32—Thermally-sensitive members
- H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
- H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
- H01H37/5409—Bistable switches; Resetting means
Definitions
- the invention relates to a thermal switch with a temperature sensor formed from a bimetallic snap disk which interacts with a contact system which has at least one movable contact which is fastened to an L-shaped spring held in a housing of the switch, one leg of which is perpendicular to the Snap direction of the bimetallic snap disk is resiliently movable.
- Such a thermal switch has been e.g. known from US-A-2 889 430.
- a wire spring is provided, which is bent into a relatively large loop into which a pin engages and guides it.
- the end of one leg is also fixed to a pin held in the housing and the end of the second leg engages in the operating position of the switch in a notch of a pin serving as a contact, which engages between the pin engaging in the loop and the crossing point of the two legs a transmission member supported on the bimetallic snap disc on the spring.
- the bimetallic snap disk snaps, the end of one leg slides out of the notch and under the end of this pin, thereby reaching its end position at a stop that corresponds to the triggered position of the switch.
- US-A-3 246 107 discloses a thermal switch in which a leaf spring is attached directly to the bimetallic snap disk.
- the leaf spring is essentially V-shaped and engages in the operating position of the switch between two contacts arranged in the housing.
- the bimetallic snap disk is snapped, the leaf spring slides out between the contacts and comes into contact with other contacts. Since the transition between the gradations in which the fixed contacts are held is sharp-edged, the resetting of the switch from its triggered position into its operating position presents corresponding difficulties.
- the rivet provided for connection to the bimetallic snap disk also influences the behavior of the rivet.
- thermo switch From DE-A-14 13 910 a thermal switch was known in which a bimetallic strip is fixed in the central region on a housing and the free ends are angled. These bends keep resilient contacts against their spring force in contact with fixed contacts. If this bimetallic strip bends far enough, the bends release the resilient contacts and these move away from the fixed contacts.
- a thermal display in which a bimetallic snap disk is provided with a pin which interacts with a display formed by a leaf spring, the substantially S-shaped leaf spring with one of its legs on an in lies essentially parallel to the surface of the housing bimetallic snap disk.
- the spring rests against the pin connected to the bimetallic snap disk. If the bimetallic snap disk snaps into its second position, the leaf spring is released and can stretch, whereby the this arranged display button assumes its triggered position.
- This solution also has the disadvantage that a separate part fastened to the bimetallic snap disk is necessary, the fastening of which has an influence on the behavior of the bimetallic snap disk that is difficult to calculate.
- the aim of the invention is to avoid these disadvantages and to propose a thermal switch of the type mentioned at the outset, which is distinguished by a simple structure and which can be easily reset to the operating position after tripping.
- the L-shaped spring is designed as a leaf spring and is attached with its one leg to a wall of the housing running in the snap direction of the thermobimetal snap disk and the edge of the second leg facing the thermobimetal snap disk runs within the snap area thereof, in which the operating position of the switch this second leg of the spring is supported with its free end on a locking lug arranged in the housing with a ramp which increases from the triggered position of the spring to its operating position.
- an insulating body is arranged on the side of the spring facing away from the thermobimetal snap disk, which carries the movable contact piece.
- the proposed arrangement of the contact piece ensures trouble-free interruption of the contact.
- FIG. 1 shows a greatly enlarged plan view of a thermal switch designed according to the invention
- FIG. 2 shows a section along line II-II of FIG. 1
- a concave thermobimetal snap disk 3 is arranged, which according to the full lines in FIG. 2 is at rest.
- an L-shaped leaf spring 5 is fastened to the vertical side wall 6 of the switch housing 1 by riveting, soldering, welding or the like.
- the leaf spring 5 is under tension and presses in the direction of arrow 7 on a fixing lug 8 attached to the switch housing base. This is ramp-shaped with increasing cross-sectional enlargement towards the leaf spring 5 on the upper edge of the Leaf spring 5, an extension 9 is provided, on which a cylindrical insulation body 10 is attached.
- thermo bimetallic snap disk 3 begins to heat up further and snap upwards into the dashed position shown in FIG.
- This snap movement causes the free end of the leaf spring 5 to be raised above the height of the fixing lug 8, so that the leaf spring will move with its free end over the fixing lug 8 into the rest position shown in broken lines in FIG.
- the contact piece 11 connected to the spring is moved away from the contacts 12, so that the power supply to the device is interrupted.
- the restoration of the power supply is particularly easy to carry out in the design of a thermal switch according to the invention.
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Thermally Actuated Switches (AREA)
Description
Die Erfindung bezieht sich auf einen thermischen Schalter mit einem aus einer Thermobimetallschnappscheibe gebildeten Temperaturfühler, der mit einem Kontaktsystem zusammenwirkt, das mindestens einen beweglichen Kontakt aufweist, der an einer in einem Gehäuse des Schalters gehaltenen L-förmigen Feder befestigt ist, deren einer Schenkel senkrecht zur Schnapprichtung der Thermobimetallschnappscheibe federnd beweglich ist.The invention relates to a thermal switch with a temperature sensor formed from a bimetallic snap disk which interacts with a contact system which has at least one movable contact which is fastened to an L-shaped spring held in a housing of the switch, one leg of which is perpendicular to the Snap direction of the bimetallic snap disk is resiliently movable.
Ein solcher thermischer Schalter wurde z.B. durch die US-A-2 889 430 bekannt. Bei diesem Schalter ist eine Drahtfeder vorgesehen, die zu einer relativ großen Schlaufe gebogen ist, in die ein Stift eingreift und diese führt. Das Ende des einen Schenkels ist ebenfalls an einem im Gehäuse gehaltenen Stift festgelegt und das Ende des zweiten Schenkels greift in der Betriebsstellung des Schalters in eine Kerbe eines als Kontakt dienenden Stiftes ein, zwischen dem in die Schlaufe eingreifenden Stift und der Kreuzungsstelle der beiden Schenkel greift ein auf der Thermobimetallschnappscheibe abgestutztes Übertragungsglied an der Feder an. Beim Schnappen der Thermobimetallschnappscheibe gleitet das Ende des einen Schenkels aus der Kerbe heraus und unter dem Ende dieses Stiftes hinweg und erreicht dadurch seine Endstellung an einem Anschlag, die der ausgelösten Stellung des Schalters entspricht.Such a thermal switch has been e.g. known from US-A-2 889 430. In this switch, a wire spring is provided, which is bent into a relatively large loop into which a pin engages and guides it. The end of one leg is also fixed to a pin held in the housing and the end of the second leg engages in the operating position of the switch in a notch of a pin serving as a contact, which engages between the pin engaging in the loop and the crossing point of the two legs a transmission member supported on the bimetallic snap disc on the spring. When the bimetallic snap disk snaps, the end of one leg slides out of the notch and under the end of this pin, thereby reaching its end position at a stop that corresponds to the triggered position of the switch.
Der Nachteil dieser Lösung besteht in der Schwierigkeit den Schalter nach einer Auslösung wieder in dessen Betriebsstellung zu bringen. Außerdem ist auch die Herstellung einer solchen Feder relativ aufwendig und es ist auch ein separates Übertragungsglied erforderlich.The disadvantage of this solution is the difficulty in bringing the switch back into its operating position after a trip. In addition, the manufacture of such a spring is relatively complex and a separate transmission element is also required.
Weiters wurde durch die US-A-3 246 107 ein thermischer Schalter bekannt, bei dem eine Blattfeder direkt auf der Thermobimetallschnappscheibe befestigt ist. Die Blattfeder ist im wesentlichen V-förmig gebogen und greift in der Betriebsstellung des Schalters zwischen zwei im Gehäuse angeordneten Kontakten ein. Beim Schnappen der Thermobimetallschnappscheibe rutscht die Blattfeder zwischen den Kontakten heraus und kommt mit weiteren Kontakten in Berührung. Da der Übergang zwischen den Abstufungen, in denen die festen Kontakte gehalten sind, scharfkantig erfolgt, bereitet die Rückstellung des Schalters aus seiner ausgelösten Stellung in seine Betriebsstellung entsprechende Schwierigkeiten. Außerdem beeinflußt der zur Verbindung mit der Thermobimetallschnappscheibe vorgesehene Niet auch das Verhalten derselben.Furthermore, US-A-3 246 107 discloses a thermal switch in which a leaf spring is attached directly to the bimetallic snap disk. The leaf spring is essentially V-shaped and engages in the operating position of the switch between two contacts arranged in the housing. When the bimetallic snap disk is snapped, the leaf spring slides out between the contacts and comes into contact with other contacts. Since the transition between the gradations in which the fixed contacts are held is sharp-edged, the resetting of the switch from its triggered position into its operating position presents corresponding difficulties. In addition, the rivet provided for connection to the bimetallic snap disk also influences the behavior of the rivet.
Durch die DE-A-14 13 910 wurde ein thermischer Schalter bekannt, bei der ein Bimetallstreifen in dessen Mittelbereich an einem Gehäuse festgelegt ist und dessen freie Enden abgewinkelt sind. Diese Abwinkelungen halten federnde Kontakte entgegen deren Federkraft in Kontakt mit festen Kontakten. Biegt sich dieser Bimetallstreifen weit genug, so geben die Abwinkelungen die federnden Kontakte frei und diese bewegen sich von den festen Kontakten weg.From DE-A-14 13 910 a thermal switch was known in which a bimetallic strip is fixed in the central region on a housing and the free ends are angled. These bends keep resilient contacts against their spring force in contact with fixed contacts. If this bimetallic strip bends far enough, the bends release the resilient contacts and these move away from the fixed contacts.
Der Nachteil dieser Lösung besteht darin, daß es zu keiner plötzlichen Änderung der Lage des Bimetallelementes kommt. Außerdem läßt sich auch dieser thermische Schalter nach dessen Auslösung nur sehr umständlich wieder in die Betriebsstellung zurückstellen.The disadvantage of this solution is that there is no sudden change in the position of the bimetallic element. In addition, this thermal switch can be reset to the operating position only with great difficulty after it has been triggered.
Durch die FR-A-972 785 wurde eine thermische Anzeige bekannt, bei dem eine Thermobimetallschnappscheibe mit einem Stift versehen ist, der mit einem durch eine Blattfeder gebildete Anzeige zusammenwirkt, wobei die im wesentlichen S-förmig gebogene Blattfeder mit einem ihrer Schenkel auf einer im wesentlichen parallel zur Thermobimetallschnappscheibe verlaufenden Fläche des Gehäuses aufliegt. Dabei liegt die Feder in der Betriebsstellung der Anzeige an dem mit der Thermobimetallschnappscheibe verbundenen Stift federnd an. Schnappt die Thermobimetallschnappscheibe in ihre zweite Lage, so wird die Blattfeder freigegeben und kann sich strecken, wobei der an dieser angeordnete Anzeigeknopf seine ausgelöste Stellung einnimmt.From FR-A-972 785 a thermal display was known, in which a bimetallic snap disk is provided with a pin which interacts with a display formed by a leaf spring, the substantially S-shaped leaf spring with one of its legs on an in lies essentially parallel to the surface of the housing bimetallic snap disk. In the operating position of the display, the spring rests against the pin connected to the bimetallic snap disk. If the bimetallic snap disk snaps into its second position, the leaf spring is released and can stretch, whereby the this arranged display button assumes its triggered position.
Auch bei dieser Lösung ergibt sich der Nachteil, daß ein separater an der Thermobimetallschnappscheibe befestigter Teil notwendig ist, wobei sich durch dessen Befestigung eine nur schwer kalkulierbare Beeinflussung des Verhaltens der Thermobimetallschnappscheibe ergibt.This solution also has the disadvantage that a separate part fastened to the bimetallic snap disk is necessary, the fastening of which has an influence on the behavior of the bimetallic snap disk that is difficult to calculate.
Ziel der Erfindung ist es diese Nachteile zu vermeiden und einen thermischen Schalter der eingangs erwähnten Art vorzuschlagen, der sich durch einen einfachen Aufbau auszeichnet und der sich nach einer Auslösung leicht in die Betriebsstellung zurücksetzen läßt.The aim of the invention is to avoid these disadvantages and to propose a thermal switch of the type mentioned at the outset, which is distinguished by a simple structure and which can be easily reset to the operating position after tripping.
Erfindungsgemäß wird dies dadurch erreicht, daß die L-förmige Feder als Blattfeder ausgebildet ist und mit ihrem einen Schenkel an einer in Schnapprichtung der Thermobimetallschnappscheibe verlaufenden Wand des Gehäuses befestigt ist und die der Thermobimetallschnappscheibe zugekehrte Kante des zweiten Schenkels innerhalb des Schnappbereiches derselben verläuft, wobei in der Betriebsstellung des Schalters dieser zweite Schenkel der Feder mit seinem freien Ende an einer im Gehäuse angeordneten Rastnase mit Auflauframpe abgestützt ist, die von der ausgelösten Stellung der Feder gegen deren Betriebsstellung zu ansteigt.According to the invention this is achieved in that the L-shaped spring is designed as a leaf spring and is attached with its one leg to a wall of the housing running in the snap direction of the thermobimetal snap disk and the edge of the second leg facing the thermobimetal snap disk runs within the snap area thereof, in which the operating position of the switch this second leg of the spring is supported with its free end on a locking lug arranged in the housing with a ramp which increases from the triggered position of the spring to its operating position.
Durch diese Maßnahmen ergibt sich der Vorteil, daß die Blattfeder direkt von der Thermobimetallschnappscheibe betätigt wird, wobei eine Beeinflussung der Charakteristik der Thermobimetallschnappscheibe durch Befestigungsmittel, wie dies bei den bekannten Lösungen der Fall ist, vermieden wird. Da sich durch die Anordnung der Blattfeder im Bereich des Schnappweges ein separates Übertragungsglied zur Übertragung der Bewegung der Thermobimetallschnappscheibe auf die Blattfeder erübrigt, wird auch eine Verspannung der Thermobimetallschnappscheibe durch Übertragungsmittel od. dgl. vermieden. Außerdem wirken sich durch die vorgeschlagene Konstruktion Reibungskräfte praktisch nicht aus, da die Blattfeder durch die Thermobimetallschnappscheibe nur kurz angehoben wird, um dadurch über die Rastnase gehoben zu werden.These measures have the advantage that the leaf spring is actuated directly by the bimetallic snap disk, avoiding influencing the characteristics of the bimetallic snap disk by fastening means, as is the case with the known solutions. Since the arrangement of the leaf spring in the area of the snap path eliminates the need for a separate transmission element for transmitting the movement of the thermobimetal snap disk to the leaf spring, tensioning of the thermobimetal snap disk by transmission means or the like is also avoided. In addition, due to the proposed design, frictional forces have practically no effect, since the leaf spring is only raised briefly by the bimetallic snap disk in order to be lifted over the catch.
Weiters ist es bei dem erfindungsgemäßen Schalter aufgrund der mit einer Abschrägung versehenen Rastnase auf einfache Weise möglich den Schalter nach einer Auslösung in die Betriebsstellung rückzusetzen.Furthermore, in the switch according to the invention, it is possible in a simple manner to reset the switch into the operating position after it has tripped, due to the detent provided with a bevel.
Nach einem weiteren Merkmal der Erfindung kann vorgesehen sein, daß an der der Thermobimetallschnappscheibe abgewandten Seite der Feder ein Isolationskörper angeordnet ist, der das bewegliche Kontaktstück trägt.According to a further feature of the invention it can be provided that an insulating body is arranged on the side of the spring facing away from the thermobimetal snap disk, which carries the movable contact piece.
Durch die vorgeschlagene Anordnung des Kontaktstückes wird eine störungsfreie Kontaktunterbrechung sichergestellt.The proposed arrangement of the contact piece ensures trouble-free interruption of the contact.
Im Folgenden wird die Erfindung an Hand eines in der Zeichnung dargestellten Ausführungsbeispieles näher erläutert.The invention is explained in more detail below on the basis of an exemplary embodiment shown in the drawing.
Es zeigen: Fig.1 eine stark vergrößerte Draufsicht auf einen erfindungsgemäß ausgebildeten thermischen Schalter und Fig.2 einen Schnitt längs Linie II-II der Fig.11 shows a greatly enlarged plan view of a thermal switch designed according to the invention, and FIG. 2 shows a section along line II-II of FIG. 1
Im Bodenbereich eines im Querschnitt etwa U-förmigen Schaltergehäuses 1 eines thermischen Schalters 2 ist eine konkav ausgebildete Thermobimetallschnappscheibe 3 angeordnet, die sich gemäß den vollen Linien in Fig.2 im Ruhezustand befindet. Auf einer Zwischenebene 4 des Schaltergehäuses 1 aufliegend, ist eine L-förmige Blattfeder 5 an der vertikalen Seitenwand 6 des Schaltergehäuses 1 durch Nieten, Löten, Schweißen oder dgl. befestigt. In der in Fig.1 mit vollen Linien dargestellten Position steht die Blattfeder 5 unter Vorspannung und drückt in Richtung des Pfeiles 7 auf eine am Schaltergehäuseboden befestigte Fixiernase 8. Diese ist unter zunehmender Querschnittsvergrößerung in Richtung zur Blattfeder 5 hin rampenförmig ausgebildet Auf der oberen Kante der Blattfeder 5 ist ein Fortsatz 9 vorgesehen, auf dem ein zylinderförmiger Isolationskörper 10 aufgesteckt ist. Auf dem Isolationskörper 10 befindet sich ein elektrisch leitendes Kontaktstück 11, das an zwei fixen Gegenkontakten 12 und 12' anliegt und somit den Stromdurchgang über den Gegenkontakt 12 - Kontaktstück 11 und den Gegenkontakt 12' herstellt. Mit strichlierten Linien sind die im Ruhezustand an dem elektrisch leitenden Kontaktstück 11 anliegenden Kontakte 12 und 12' dargestellt.In the bottom area of a switch housing 1 of a thermal switch 2, which is approximately U-shaped in cross section, a concave thermobimetal snap disk 3 is arranged, which according to the full lines in FIG. 2 is at rest. Lying on an intermediate level 4 of the switch housing 1, an L-
Sobald es zu einer unerwünschten hohen Erwärmung eines Gerätes, z.B. eines Bügeleisens durch Ausfall des Temperaturregelers kommt, beginnt sich die gewölbte ausgebildete Thermobimetallschnappscheibe 3 weiter zu erwärmen und nach oben in die in Fig.2 dargestellte strichlierte Stellung zu schnappen. Durch diese Schnappbewegung bedingt kommt es zu einer Anhebung des freien Endes der Blattfeder 5 über die Höhe der Fixiernase 8, sodaß sich die Blattfeder mit ihrem freien Ende über die Fixiernase 8 in die in Fig.1 mit strichpunktierten Linien dargestellte Ruhelage bewegen wird. Gleichzeitig mit dieser Federbewegung wird auch das mit der Feder verbundene Kontaktstück 11 von den Kontakten 12 weg bewegt, sodaß die Stromzufuhr zum Gerät unterbrochen wird. Die Wiederherstellung der Stromzufuhr ist bei der erfindungsgemäßen Ausbildung eines thermischen Schalters besonders einfach durchführbar. Es muß dazu lediglich nach Abkühlen des Gerätes und Zurückschnappen der Thermobimetallschnappscheibe in die in Fig.2 mit vollen Linien gezeichnete Lage, das freie Ende der Blattfeder 5 über die geneigte Fläche der rampenförmig ausgebildeten Fixiernase 8 zurückgeschoben werden, bis die Blattfeder 5 wieder in die in Fig.1 mit vollen Linien gezeichnete Lage einrastet und auf der Zwischenebene 4 aufliegt.As soon as an undesired high heating of a device, e.g. If an iron comes through a failure of the temperature regulator, the curved thermo bimetallic snap disk 3 begins to heat up further and snap upwards into the dashed position shown in FIG. This snap movement causes the free end of the
Claims (2)
- Thermal switch (2) having a temperature sensor, formed by a thermo-bimetallic snap disk (3), which interacts with a contact system (11, 12, 12') which has at least one moving contact (11), which is attached to an L-shaped spring (5) held within a casing (1) of the switch (2), one arm of the spring exhibiting sprung movement perpendicular to the snap direction of the thermo-bimetallic snap disk (3), characterised in that the L-shaped spring (5) is designed as a flat spring and is attached by means of one arm to a wall of the casing (1) running in the snap direction of the thermo-bimetallic snap disk (3) and the edge, facing the thermo-bimetallic snap disk (3), of the second arm runs within the snapping region of the latter, such that, in the operating position of the switch (2), the free end of this second arm of the spring (5) is supported on a latch (8), having an inclined ramp, arranged within the casing (1), which ramp rises from the released position of the spring (5) to its operating position.
- Thermal switch according to Claim 1, characterised in that an insulating body (10), which supports the moving contact (11), is arranged on the side of the spring (5) remote from the thermo-bimetallic snap disk (3).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT1966/84 | 1984-06-15 | ||
| AT0196684A AT386489B (en) | 1984-06-15 | 1984-06-15 | THERMAL SWITCH WITH A TEMPERATURE SENSOR MADE FROM A THERMAL BIMETALLIC SNAP DISC |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0168378A2 EP0168378A2 (en) | 1986-01-15 |
| EP0168378A3 EP0168378A3 (en) | 1988-07-27 |
| EP0168378B1 true EP0168378B1 (en) | 1991-10-23 |
Family
ID=3524905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP85890128A Expired - Lifetime EP0168378B1 (en) | 1984-06-15 | 1985-06-12 | Thermal switch with a temperature detector formed by a bimetallic snap disc |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4646054A (en) |
| EP (1) | EP0168378B1 (en) |
| AT (1) | AT386489B (en) |
| DE (1) | DE3584481D1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10259569A1 (en) * | 2002-12-19 | 2004-07-01 | Hilti Ag | Hand-held power tool, e.g. chisel hammer, has sensor switch connected free of vibration with switch carrier |
| US7766006B1 (en) * | 2007-03-09 | 2010-08-03 | Coprecitec, S.L. | Dual fuel vent free gas heater |
| DE102019128367B4 (en) * | 2019-10-21 | 2021-06-10 | Marcel P. HOFSAESS | TEMPERATURE DEPENDENT SWITCH |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR972785A (en) * | 1941-04-23 | 1951-02-02 | Electro App S A | Thermostatic device |
| US2889430A (en) * | 1957-01-11 | 1959-06-02 | Smith Webster Deroyce | Thermostats |
| DE1413910A1 (en) * | 1961-01-07 | 1969-10-09 | Nikolaus Laing | Temperature protection switch |
| US3246107A (en) * | 1963-11-04 | 1966-04-12 | United Carr Inc | Non-resetting thermally responsive switch |
| DE1513323C3 (en) * | 1965-10-15 | 1974-01-31 | Ellenberger & Poensgen Gmbh, 8503 Altdorf | Push button thermal overcurrent switch |
| US4092623A (en) * | 1976-07-21 | 1978-05-30 | Mechanical Products | Circuit breaker |
| AT354140B (en) * | 1976-07-23 | 1979-12-27 | Electrovac | THERMAL SWITCH |
| DE2739928C3 (en) * | 1977-09-05 | 1980-11-06 | Norbert 5275 Bergneustadt Weiner | Temperature-dependent electrical switch in flat design |
| AT374619B (en) * | 1981-03-05 | 1984-05-10 | Electrovac | THERMAL SWITCH |
| AT383696B (en) * | 1982-03-03 | 1987-08-10 | Electrovac | THERMAL SWITCH |
-
1984
- 1984-06-15 AT AT0196684A patent/AT386489B/en not_active IP Right Cessation
-
1985
- 1985-06-12 DE DE8585890128T patent/DE3584481D1/en not_active Expired - Fee Related
- 1985-06-12 US US06/743,945 patent/US4646054A/en not_active Expired - Fee Related
- 1985-06-12 EP EP85890128A patent/EP0168378B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US4646054A (en) | 1987-02-24 |
| DE3584481D1 (en) | 1991-11-28 |
| EP0168378A2 (en) | 1986-01-15 |
| EP0168378A3 (en) | 1988-07-27 |
| ATA196684A (en) | 1988-01-15 |
| AT386489B (en) | 1988-08-25 |
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