GB2628436A - Indicator mechanism for a switch and switch - Google Patents
Indicator mechanism for a switch and switch Download PDFInfo
- Publication number
- GB2628436A GB2628436A GB2306701.0A GB202306701A GB2628436A GB 2628436 A GB2628436 A GB 2628436A GB 202306701 A GB202306701 A GB 202306701A GB 2628436 A GB2628436 A GB 2628436A
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- GB
- United Kingdom
- Prior art keywords
- leaf spring
- indicator
- contact
- state
- indicator mechanism
- 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.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 75
- 230000033001 locomotion Effects 0.000 description 12
- 238000005452 bending Methods 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 210000002105 tongue Anatomy 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/16—Indicators for switching condition, e.g. "on" or "off"
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/08—Indicators; Distinguishing marks
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
Abstract
An indicator mechanism 1 for a switch comprises a plunger 2, a fixed plate 3, an indicator contact 4 and a leaf spring 5. A first end 53 of the leaf spring is arranged in a recess 20 of the plunger. At a pivot region 54 of the leaf spring, arranged between the first end and a second end 55 of the leaf spring, at least one slotted bush 6 is attached to the leaf spring. The indicator contact is located between the fixed plate and the plunger. In a first state 11 of the indicator mechanism (Fig.1), the leaf spring is at a first position, closing the indicator contact. In a second state 12 of the indicator mechanism (Fig.3), the leaf spring is pivoted around the pivot region with respect to the first position, opening the indicator contact. The leaf spring may be bent in the first state, unbent in the second state and may form an electrically conductive connection between the fixed plate and the indicator contact. A switch for a main circuit breaker (e.g. a motor protection circuit breaker) may include the indicator mechanism to indicate a position of main circuit breaker contacts.
Description
Description
Indicator mechanism for a switch and switch An indicator mechanism, in particular for a switch, and a switch are specified.
A task to be solved is, inter alia, to provide an indicator mechanism that is characterized by a high robustness and a 10 high lifespan. Another task to be solved is, inter alia, to provide a switch comprising such an indicator mechanism.
These tasks are solved by an indicator mechanism comprising the features of independent claim 1 and by a switch comprising the features of claim 12. Advantageous embodiments and further developments are the subject matter of the respective dependent patent claims.
In at least one embodiment, the indicator mechanism for a switch comprises a plunger, a fixed plate, an indicator contact and a leaf spring. At a first end of the leaf spring, the leaf spring is arranged in a recess of the plunger. At a pivot region of the leaf spring arranged between the first end of the leaf spring and a second end of the leaf spring, at least one slotted bush is attached to the leaf spring. The indicator contact is arranged in a region between the fixed plate and the plunger. In a first state of the indicator mechanism the leaf spring is at a first position, closing the indicator contact. In a second state of the indicator mechanism the leaf spring is pivoted around the pivot region with respect to the first position, thereby opening the indicator contact. -2 -
The plunger is in particular configured to move in a direction transverse to a main extension direction of the leaf spring. A movement of the plunger is thereby relative to a housing of the indicator mechanism. For example, the housing is a housing of the switch. For example, the plunger comprises a plastic.
The indicator mechanism comprises, for example, an indicator circuit. The indicator circuit may comprise at least one indication means that allows to externally observe if the electrical circuit is closed or open. The at least one indication means may be an optical means, for example an LED. Hence, the state of the indicator mechanism, and thus of the switch, may be externally observed The fixed plate is preferably connected to a contact structure of the indicator circuit. In particular, the fixed plate and the contact structure are formed in one piece. The fixed plate and/or the contact structure are, for example, formed of an electrically conductive material such as a metal. In particular, the fixed plate and/or the contact structure are formed with at least one metal, for example copper. The fixed plate and the contact structure are preferably fixedly connected to the housing of the indicator mechanism. The contact structure may form an electrical contact of the indicator circuit.
The indicator contact is preferably made of an electrically conductive material such as a metal. For example, the indicator contact is formed with at least one metal, for example copper. In particular the indicator contact forms a further electrical contact of the indicator circuit. The -3 -indicator contact is in particular fixedly attached to the housing of the indicator mechanism.
The leaf spring is preferably formed with an electrically conductive material and may act as a movable switching bridge between the fixed plate and the indicator contact. That is in particular, the indicator circuit is closed when the leaf spring is in electrically conductive contact with the fixed plate and the indicator contact, i.e., if the indicator contact is closed. Preferably, this is the case in the first state. In particular in the second state, i.e., if the indicator contact is opened, the indicator circuit is opened. Preferably, the leaf spring is formed with copper.
In particular, the second end of the leaf spring is arranged opposite to the first end of the leaf spring.
In particular, the pivot region forms a rotational center for the leaf spring. The at least one slotted bush forms preferably a bearing for the leaf spring. That is in particular, at the pivot region, the at least one slotted bush directly contacts the housing of the indicator mechanism. Preferably, this contact remains in the first state, in the second state and during a transition between the first and the second state.
For example, the leaf spring comprises a tongue that matches a slot of the at least one slotted bush. The tongue may be an extension in width of the leaf spring in the pivot region.
The width of the leaf spring is measured in particular parallel to a main extension plane and perpendicular to a main extension direction of the leaf spring. In particular, an interlocking connection is formed by the leaf spring and -4 -the at least one slotted bush. The at least one slotted bush is preferably formed with a plastic. The indicator mechanism may, for example, comprise two slotted bushes arranged at opposing sides of the leaf spring.
The leaf spring comprises, for example, a first contact region and a second contact region. In the first state, the first contact region is in electrical contact with the indicator contact and the second region is in electrical contact with the fixed plate. For example, the first contact region is arranged between the pivot region and the first end. In this case the second contact region may be located at the second end of the leaf spring.
If, for example, the second position of the plunger in the second state is translated upwards with respect to the housing of the indicator mechanism, the first contact region of the leaf spring is moves upwards, i.e., is rotated counter-clockwise with respect to the first position of the leaf spring. Thereby, the leaf spring moves away from the indicator contact, that is, the indicator contact is opened.
The indicator mechanism described herein is based inter alia on the following technical considerations. In common switches comprising leaf springs, the leaf springs are usually fixedly attached to a fixed plate. By moving the plunger, the contact of the switch is opened or closed. Due to the fixation of the leaf spring, the leaf spring is bent and undergoes plastic deformation. Due to this mechanical stress, the leaf spring has a limited lifespan. Furthermore, contact erosion may occur at the contact of the leaf spring with the indicator contact. -5 -
The indicator mechanism described herein makes use of the idea of using a leaf spring that comprises a pivot region. The pivot region allows the leaf spring to rotate around the pivot region as the plunger moves. By this rotation, bending and hence deformation of the leaf spring is reduced. Therefore mechanical stress of the leaf spring is reduced and the lifespan of the leaf spring may be significantly increased. Furthermore, lesser resistive torque is offered by the leaf spring to the plunger, allowing an increased stroke of the plunger and/or an increased thickness of the leaf spring. A further advantage is that the indicator mechanism described here may easily be implemented in conventional switches comprising leaf springs. In particular, little to no modifications of a housing of these switches or other parts of these switches are necessary.
According to at least one embodiment or the embodiment described above, in the first stage the plunger is in a first position and in the second state the plunger is translated by a stroke with respect to the first position into a second position. In particular, the movement of the plunger forces the leaf spring to close or open the indicator contact. Thus, the movement of the plunger determines the switching capability of the switch. By using the leaf spring that allows for a rotation around the pivot region, a stroke of the plunger may be increased. As a result, a contact force of the leaf spring towards the indicator contact may be increased. This results in a reduced electrical resistance between the leaf spring and the indicator contact. The lower electrical resistance helps to reduce erosion of the contacts and thus to increase the electrical lifespan of the indicator mechanism. -6 -
According to at least one embodiment of the indicator mechanism or at least one of embodiments described above, the leaf spring forms an electrically conductive connection between the fixed plate and the indicator contact in the first state. Preferably, the leaf spring directly touches the fixed plate in the second contact region, which may be the second end of the leaf spring. That is, in the first state the leaf spring closes the indicator circuit.
According to at least one embodiment of the indicator mechanism or at least one of embodiments described above, the leaf spring exerts a contact force of at least 0.5 Newton on the indicator contact in the first state. In particular, the leaf spring exerts a contact force of at least 0.5 Newton on the fixed plate in the first state. Electrical connections between the leaf spring and the indicator contact and/or the fixed plate with a low electrical resistance are enabled by such a high contact force. This reduces the risk of a failure of the indication means. Furthermore, the electrical lifespan of the indicator mechanism is increased.
According to at least one embodiment of the indicator mechanism or at least one of embodiments described above, at least a part of the leaf spring is bent in the first state.
By bending at least a part of the leaf spring a sufficiently high contact force may be achieved. For example, the leaf spring is formed such that the bending occurs only locally, for example preferably in a region between the indicator contact and the pivot region. It is advantageous if the leaf spring is formed with copper, since copper is a comparably soft metal, allowing plastic deformation. -7 -
According to at least one embodiment of the indicator mechanism or at least one of embodiments described above, the leaf spring is electrically insulated from the fixed plate in the second state. Preferably, there is no electrical and/or physical contact between the leaf spring and the fixed plate in the second state. That is, the indicator circuit is opened. In particular, the leaf spring is rotated around the pivot region in the second state with respect to the first position. If, for example, the second position of the plunger in the second state is translated upwards with respect to the housing of the indicator mechanism, the second contact region of the leaf spring is moves downwards, i.e., is rotated counter-clockwise with respect to the first position of the leaf spring. Thereby, the leaf spring moves away from the fixed plate.
According to at least one embodiment of the indicator mechanism, at least a part of the leaf spring is unbent in the second state. Preferably, the whole leaf spring is unbent in the second state. That is, the leaf spring is not deformed in the second state. Hence, mechanical stress on the leaf spring is reduced and the lifespan of the leaf spring is increased.
According to at least one embodiment of the indicator mechanism or at least one of embodiments described above, the leaf spring is loosely attached to the fixed plate. That is, the leaf spring is not attached to the fixed plate by any connection or fixing means, for example a rivet or a screw.
Preferably, the leaf spring touches the fixed plate, depending on the state of the indicator mechanism. That is, in the first state the leaf spring may touch the fixed plate and in the second state the leaf spring may not be in contact -8 -with the fixed plate. Advantageously, omitting any fixing means like rivets makes an assembly of the indicator mechanism and consequently the switch easy and cost-efficient.
According to at least one embodiment of the indicator mechanism or at least one of embodiments described above, the leaf spring connects to the fixed plate on a side facing the indicator contact in the first state. By this arrangement, bending of the leaf spring may be reduced, especially in the second state.
According to at least one embodiment of the indicator mechanism or at least one of embodiments described above, the leaf spring is loosely attached to the plunger. That is, no connection or fixing means, such as rivets or screws, are used to attach the leaf spring to the plunger. That is, the first end of the leaf spring rests in the recess of the plunger. Advantageously, omitting any fixing means like rivets makes an assembly of the indicator mechanism and consequently the switch easy and cost-efficient.
According to at least one embodiment of the indicator mechanism or at least one of embodiments described above, the leaf spring comprises a thickness of at least 0.25 mm. In particular, the leaf spring is thicker than conventional leaf springs for switches by, for example, a factor of two. Because of this increased thickness, the leaf spring may be formed particularly robust. Additionally, the leaf spring may carry higher current densities which may reduce the risk of a failure of the indicator mechanism and contact erosion. -9 -
Furthermore, a switch for a main circuit breaker is described. The switch comprises an indicator mechanism described herein. Therefore all features disclosed for the indicator mechanism are also disclosed for the switch and vice versa. The switch is, for example, an auxiliary switch.
The indicator mechanism indicates a position of a main circuit breaker contact. For example, the switch is attached to a main circuit breaker. A movement of a main circuit breaker switch indicating whether the main circuit breaker is closed or open, is transferred to the plunger of the switch. By the movement of the plunger as discussed above, the state of the indicator mechanism may change. Therefore, a change of position of the main circuit breaker may be observed by the switch.
According to at least one embodiment of the switch, the main circuit breaker is a motor protection circuit breaker. A motor protection circuit breaker is also referred to as MPCB, for short.
Further advantages and advantageous embodiments and further developments of the optoelectronic semiconductor device will become apparent from the following exemplary embodiments shown in connection with schematic drawings. Identical elements, elements of the same kind or elements having the same effect, are provided with the same reference signs in the figures. The figures and the proportions of the elements shown in the figures are not to be regarded as true to scale.
Rather, individual elements may be shown exxageratedly large for better representability and/or for better comprehensibility.
-10 -In the figures: Figures 1 and 2 show a schematic view of an indicator mechanism in a first state according to a first exemplary embodiment in different perspectives; Figures 3 and 4 show a schematic view of an indicator mechanism in a first state according to a first exemplary embodiment in different perspectives; Figur 5 shows a schematic sectional view of a switch according to an embodiment; Figures 6 and 7 show a schematic view of an indicator mechanism in a first state according to a first exemplary embodiment in different perspectives; The indicator mechanism 1 in the first state 11 of Figures 1 and 2 comprises a plunger 2, a fixed plate 3, an indicator contact 4 and a leaf spring 5. The leaf spring 5 comprises a first contact region 51 and second contact region 52. At the first contact region 51 the leaf spring 5 is in mechanical and electrical contact with the indicator contact 4. The indicator contact 4 is arranged in a region between the fixed plate 3 and the plunger 2.
At the second contact region 52 the leaf spring 5 loosely touches the fixed plate 3 and is in electrical contact with the fixed plate 3. The leaf spring 5 is not fixedly attached to the fixed plate 3. The leaf spring 5 connects to the fixed plate 3 on a side facing the indicator contact 4.
The leaf spring 5, the indicator contact 4 and the fixed plate 3 are each formed with copper. The fixed plate 3 is formed in one piece with a contact structure 30. The contact structure 30 is part of an indicator circuit (not shown) by which the position of the leaf spring 5 and/or the plunger 2 may be indicated. The indicator contact 4 is part of the indicator circuit as well. The leaf spring 5 closes the indicator circuit.
At a first end of the leaf spring 53, the leaf spring 5 is arranged in a recess 20 of the plunger 2. At a pivot region 54 of the leaf spring 5 arranged between the first end 53 and a second end 55 of the leaf spring 5, slotted bushes 6 are attached to the leaf spring 5. The second end 55 is opposite 15 to the first end 53 of the leaf spring 5. At the second end the second contact region 52 is located.
At opposing sides the leaf spring 5 comprises tongues 56 that matches slots 61 of the bushes 6. The tongues 56 are formed as an extension in width of the leaf spring 5 in the pivot region 54. That is, an interlocking connection is formed by the leaf spring 5 and the slotted bushes 6. The slotted bushes 6 are preferably formed with a plastic.
The fixed plate 3 and the contact structure 30 as well as the indicator contact 4 are fixedly connected to a housing 101 (not shown, compare figure 5). The housing 101 is, for example, a housing of a switch 100, for which the indicator mechanism 1 may be used. The plunger 2 and the leaf spring 5 are arranged movable with respect to the housing 101. The plunger 2 may move upwards from a first position 21 to a second position 22 (compare figure 3), forcing the leaf spring 5 to pivot around the pivot region 54. The pivot -12 -region 54 is a rotational center for the movement of the leaf spring 5.
The slotted bushes 6 form a bearing for the leaf spring 5.
That is in particular, at the pivot region 54, the slotted bushes 6 directly contact the housing 101. Preferably, this contact remains in the first state 11, in the second state 12 and during a transition between the first and the second state 11, 12 and vice versa.
The leaf spring 5 is bent in the first state 11, in particular in a region between the pivot region 54 and the first contact region 51. Due to the slotted bushes 6 and the possible pivot of the leaf spring 5, the bending is reduced compared to conventional leaf springs.
Figures 3 and 4 show different perspectives of the indicator mechanism 1 according to the first exemplary embodiment in the second state 12. In the second state 12, the plunger 2 is moved upwards with respect to the housing 101 (not shown) from the first position 21 to the second position 22 by a stroke 23. The first position 21 of the plunger 21 is shown in figure 3 for illustration. Due to the rotational degree of freedom of the leaf spring 5, the stroke 23 is increased compared to conventional indicator mechanisms.
The leaf spring 5 is rotated around the pivot region 54 by a rotational movement 60. The rotational movement 60 is forced by the upwards movement of the plunger 2, since the first end of the leaf spring 53 is arranged in the recess 21 of the plunger 2. The first end of the leaf spring 53 and the first contact region 51 are thereby moving upwards with the plunger 2. The second end of the leaf spring 55 and the second -13 -contact region 52 are thereby moving downwards with respect to the housing 101. The leaf spring 5 is thereby rotated counter-clockwise around the slotted bushes 6.
As a result, the first contact region 51 is not in mechanical or electrical contact with the indicator contact 4 in the second state 12. Furthermore, the second contact region 52 is not in mechanical or electrical contact with the fixed plate 3 in the second state. That is, the indicator circuit is opened.
In the second state 12 the leaf spring 5 is not bent.
Therefore mechanical stress on the leaf spring 5 is reduced and the lifespan of the leaf spring 5 can be increased.
The switch 100 according to figure 5 comprises the indicator mechanism 1 according to the first embodiment in a housing 101. The housing 101 is made with a plastic material. A spring 102 keeps the plunger 2 in the first position 21. The switch 100 may be attaches to a main circuit breaker. During operation, a movement of a switch of the main circuit breaker, indicating a change of state of the main circuit breaker, is transferred to the plunger 2, forcing the plunger 2 from the first position 21 to the second position 22.
Thereby, the indicator contact 4 and the contact to the fixed plate 3 are opened. As a result, the indicator circuit is opened and a remote detection of the state of the main circuit breaker is possible via the switch 100.
In contrast to the indicator mechanism 1 described here, the conventional indicator mechanism of Figures 6 and 7 does not comprise slotted bushes. A leaf spring 5 of the conventional indicator mechanism is fixedly attached to a fixed plate 3 at -14 -a second end by a fixing means 9, for example by rivets. That is, no pivot motion is possible. As a result, a higher bending of the leaf spring 5 occurs in the conventional indicator mechanism, which is disadvantageous for the lifespan of the leaf spring 5.
Additionally and in contrast the indicator mechanism 1 described here, the leaf spring 5 is connected to the fixed plate 3 on a side facing away from an indicator contact 4.
This arrangement further increases bending, especially in the second state, which is also disadvantageous for the lifespan of the leaf spring 5.
The invention is not restricted to the exemplary embodiments by the description on the basis of said exemplary embodiments. Rather, the invention encompasses any new feature and also any combination of features, which in particular comprises any combination of features in the patent claims and any combination of features in the exemplary embodiments, even if this feature or this combination itself is not explicitly specified in the patent claims or exemplary embodiments.
-15 -References 1 indicator mechanism 2 plunger 3 fixed plate 4 indicator contact leaf spring 6 slotted bush 9 fixing means 11 first state of indicator mechanism 12 second state of indicator mechanism recess of the plunger 21 first position of the plunger 22 second position of the plunger 23 stroke contact structure 51 first contact region of the leaf spring 52 second contact region of the leaf spring 53 first end of the leaf spring 54 pivot region of the leaf spring second end of the leaf spring 56 tongue of the leaf spring rotational movement switch 101 housing 102 spring
Claims (13)
- -16 -Claims 1. Indicator mechanism (1) for a switch (100) comprising -a plunger (2), -a fixed plate (3), - an indicator contact (4), and - a leaf spring (5), wherein -at a first end of the leaf spring (53) the leaf spring (5) is arranged in a recess (20) of the plunger (2), -at a pivot region of the leaf spring (54) arranged between the first end of the leaf spring (53) and a second end of the leaf spring (55), at least one slotted bush (6) is attached to the leaf spring (5), -the indicator contact (4) is arranged in a region between the fixed plate (3) and the plunger (5), - in a first state (11) of the indicator mechanism (1) the leaf spring (5) is at a first position closing the indicator contact (4), -in a second state (12) of the indicator mechanism (1) the leaf spring (5) is pivoted around the pivot region (54) with respect to the first position opening the indicator contact (4).
- 2. Indicator mechanism (1) according to claim 1, wherein -in the first state (11) the plunger (2) is in a first position (21), and -in the second state (11) the plunger (2) is translated by a stroke (23) with respect to the first position (11) into a second position (22).
- 3. Indicator mechanism (1) according to one of the preceding claims, wherein in the first state (11) the leaf -17 -springs (5) forms an electrically conductively connection between the fixed plate (3) and the indicator contact (4).
- 4. Indicator mechanism (1) according to one of the preceding claims, wherein the leaf spring (5) exerts a contact force of at least 0.5 Newton on the indicator contact (4) in the first state (11).
- 5. Indicator mechanism (1) according to one of the preceding claims, wherein at least a part of the leaf spring (5) is bent in the first state (11).
- 6. Indicator mechanism (1) according to one of the preceding claims, wherein the leaf spring (5) is electrically 15 insulated from the fixed plate (3) in the second state (12).
- 7. Indicator mechanism (1) according to one of the preceding claims, wherein at least a part of the leaf spring (5) is unbent in the second state (12).
- 8. Indicator mechanism (1) according to one of the preceding claims, wherein the leaf spring (5) is loosely attached to the fixed plate (3).
- 9. Indicator mechanism (1) according to one of the preceding claims, wherein the leaf spring (5) connects to the fixed plate (3) on a side facing the indicator contact (4) in the first state (11).
- 10. Indicator mechanism (1) according to one of the preceding claims, wherein the leaf spring (5) is loosely attached to the plunger (2).
- -18 - 11. Indicator mechanism (1) according to one of the preceding claims, wherein the leaf spring (5) comprises a thickness (56) of at least 0.25 mm.
- 12. Switch (100) for a main circuit breaker, comprising an indicator mechanism (1) according to one of the preceding claims, wherein the indicator mechanism (1) indicates a position of main circuit breaker contacts.
- 13. Switch (100) according to claim 12, wherein the circuit breaker is a motor protection circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2024/025091 WO2024193851A1 (en) | 2023-03-23 | 2024-02-27 | Indicator mechanism for a switch and switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IN202311020473 | 2023-03-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB202306701D0 GB202306701D0 (en) | 2023-06-21 |
| GB2628436A true GB2628436A (en) | 2024-09-25 |
Family
ID=86763291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2306701.0A Pending GB2628436A (en) | 2023-03-23 | 2023-05-05 | Indicator mechanism for a switch and switch |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2628436A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3072760A (en) * | 1960-09-26 | 1963-01-08 | Bendix Corp | Acceleration responsive switch and control mechanism |
| GB2134716A (en) * | 1983-01-28 | 1984-08-15 | Terasaki Denki Sangyo Kk | Switch position indicator |
-
2023
- 2023-05-05 GB GB2306701.0A patent/GB2628436A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3072760A (en) * | 1960-09-26 | 1963-01-08 | Bendix Corp | Acceleration responsive switch and control mechanism |
| GB2134716A (en) * | 1983-01-28 | 1984-08-15 | Terasaki Denki Sangyo Kk | Switch position indicator |
Also Published As
| Publication number | Publication date |
|---|---|
| GB202306701D0 (en) | 2023-06-21 |
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