CN106960731A - Switching device with contact system - Google Patents
Switching device with contact system Download PDFInfo
- Publication number
- CN106960731A CN106960731A CN201610886058.XA CN201610886058A CN106960731A CN 106960731 A CN106960731 A CN 106960731A CN 201610886058 A CN201610886058 A CN 201610886058A CN 106960731 A CN106960731 A CN 106960731A
- Authority
- CN
- China
- Prior art keywords
- contact
- power
- lever
- action
- force
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
- H01H23/02—Details
- H01H23/12—Movable parts; Contacts mounted thereon
- H01H23/16—Driving mechanisms
- H01H23/20—Driving mechanisms having snap action
- H01H23/205—Driving mechanisms having snap action using a compression spring between tumbler and an articulated contact plate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
- H01H3/04—Levers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/46—Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
Landscapes
- Mechanisms For Operating Contacts (AREA)
- Switches With Compound Operations (AREA)
Abstract
The present invention relates to a kind of switching device with contact system, it includes the fixed contact bracket provided with fixed contact members and the movable contact bracket provided with movable contact members, and it has the commanding apparatus for being used for that the contact position formed by fixed and movable contact members to be opened or closed, wherein when contact position is closed contact members in the presence of contact force against each other, wherein contact system includes carrying load arm, the lever of the arm of force and fulcrum and movable contact tray frame are configured to the load arm of lever, contact force is produced as the loading force applied by load arm, and it is characterized in that, contact system includes element, it acts the power for starting shipment action on lever, the length of the arm of force is determined by the distance of fulcrum and application point of the element at lever, the operating physical force that commanding apparatus was in effective be connected and will started shipment the length that application point of the power of action at lever shifted and therefore changed the arm of force with the element is applied on the element.
Description
Technical field
It is of the invention to be with a kind of switching device with contact system (Kontaktsystem, sometimes referred to as contact system)
Starting point, the contact system includes the fixed contact provided with fixed contact members (Kontaktst ü ck, sometimes referred to as contact)
Bracket and the movable contact bracket provided with movable contact members, and the contact system is with for being opened or closed by fixing
And the manipulation at contact position (Kontaktstelle, sometimes referred to as contact/contact site) of movable contact members formation set
It is standby, wherein when contact position is closed contact members in the presence of contact force against each other, wherein contact system include with carry
Lotus arm, the lever of the arm of force and fulcrum and movable contact tray frame are configured to the load arm of lever, wherein contact force as by
The loading force that load arm applies is produced.
Background technology
Such switching device is, for example, line protection switch, motor protection switch, contactor (Sch ü tz) or all such
Class.File DE102013017381A1 shows a kind of line protection switch, the contact spring in the line protection switch
Movable contact lever (Kontakthebel, sometimes referred to as engagement lever) is pushed against fixed contact members, contact bullet
Application point of the spring at movable contact lever is to determine.In order to which breaking-off contact position must overcome contact by means of steering force
Pressure.So file DE3737539C2 is also shown for the horse with contact bridge (Kontaktbr ü cke, sometimes referred to as contact bridge)
Up to protection switch, contact spring is worked to the contact bridge for closure contact position, wherein herein for breaking-off contact portion
Position must be also applied more than the power of contact by commanding apparatus.
Contact force is generally fabricated by commanding apparatus during manipulating in currently known switching device, the contact force
From the value 0 when contact disconnects increase to when contact position is closed can by design contact spring and default value X.
For this it is generally necessary to the steering force of the contact force more than generation.Especially for example in contactor in using electrically-energized switching device
Or the layout and size of magnetic drive unit is determined in relay by the degree of steering force.
If needing big contact force in known switching device, therefore big steering force and therefore body are associated with
The huge drive device of product becomes necessary, and the drive device produces influence to the physical dimension of switching device and cost.
The content of the invention
Therefore the task of the present invention is to create a kind of switching device, can utilize to be less than in the switching device and wait to produce
The steering force driving contact system of raw contact force.
The task is solved according to the present invention by the switching device of the feature with claim 1.
Element is included according to contact system of the present invention, the element act in it is on lever, start shipment the power of action, its
The length of the middle arm of force is started shipment the distance of application point of the element of the power of action at lever by fulcrum and generation and determined, and
And commanding apparatus and generation start shipment the element of the power of action and are in and are effectively connected that (Wirkverbindung is sometimes referred to as acted on
Connection) in and will make the power for starting shipment action at lever application point displacement and therefore change the arm of force length steering force
It is applied on the element for producing the power for starting shipment action.
It is such idea to solve this task, i.e., assemble device during produced press-in (eingepr gt, have
When be referred to as pressure) power (acting on power on lever, to start shipment action), the power then during manipulating only displacement or
Rotate.By the application point displacement or rotation of the power (act on lever, start shipment the power of action) for making press-in, the arm of force is changed
Length, therefore also change the gearratio of lever.The gearratio of lever is notoriously proportional to starting shipment the power of action
Ground determines the numerical value of loading force.According to the present invention switching device in order to close contact position press-in power application point
Such position at lever can be displaced to, that is, causes loading force and therefore contact becomes big, and is to resolve
The application point of power of open contact position press-in can be displaced to such position, that is, cause contact only just it is smaller simultaneously
And therefore, it is possible to be easily overcome.Commanding apparatus must also only apply the application point displacement of the power for making press-in now
Necessary power, and the power is considerably smaller than to overcome power necessary to contact.For this now smaller Magnetic driving dress
Put enough, this makes it possible the smaller physical dimension for drive device and therefore smaller cost.Final basis
It has by the invention been realized, switching mechanism can be driven using the steering force of contact force significantly less than to be generated.
This can be solved in a different manner in structure.Produced and started shipment according to a kind of advantageous embodiment of the present invention
The element of the power of action, which works between the bearing that is fixed at housing and movable contact lever and starts shipment action, to be used
Application point of the power at bearing and movable contact lever can be moved by means of commanding apparatus parallel to movable contact bracket
The mode of position is supported by.It means that the power of press-in is produced and the edge when manipulating between bearing and movable contact lever
Movable contact lever is abreast shifted.The power being pressed into herein does not change, but only have to overcome frictional force.
When application point of the power of action at bearing is started shipment in a kind of advantageous embodiment formation according to the present invention
When support is formed by roller, the special design possibility for optimization is realized.Started shipment it is further advantageous that being formed
The proper stent of application point of the power of action at bearing is lubricated.
The branch of application point of the power of action at bearing is started shipment according to a kind of formation of advantageous embodiment of the present invention
Frame is formed by slide plate.
The branch of application point of the power of action at bearing is started shipment according to a kind of formation of advantageous embodiment of the present invention
Frame is formed using ball bearing.
The present invention another favourable design possibility be arranged to, produce start shipment action power element with around
It is fixed on the swingable mode of the run-on point at housing to be supported by, contact lever has the section of bending, starts shipment the power of action
Application point at lever is located in the region of the section of bending and can be by means of commanding apparatus with the section of bending
The mode supported at surface profile is swung.The part of bending of the power being pressed into herein by fixed run-on point along movable contact
Rotate.
It is formed with into according to advantageous embodiment in the end away from movable contact members of movable contact lever
Angle or bending end pieces, and in order to which breaking-off contact position commanding apparatus will produce the element for the power for starting shipment action in thick stick
Application point at bar is displaced in the region of angulation or bending end pieces.Angulation or bending end pieces are used as lever
Arm, is disconnected on one's own initiative by means of lever arm contact lever movable under the influence of the element for starting shipment the power of action is produced
Side is swung up.
Brief description of the drawings
In other embodiment and the advantage associated with these and other embodiment some by with
The description that detailed refer to the attached drawing afterwards is carried out becomes obvious and is better understood.Figure is only two implementations of the present invention
The schematical diagram of mode.
Fig. 1 schematically and schematically illustrate according to the present invention switching device first embodiment,
Fig. 2 a schematically and schematically illustrate when contact position is closed according to the present invention switching device second
Embodiment,
Fig. 2 b schematically and schematically illustrate when contact position disconnects according to the present invention switching device second
Embodiment.
The part or component of identical or a phase same-action indicate same reference number in figure.
List of numerals
1 switching device
1' switching devices
2 contact members fixed
The contact members that 2' is fixed
3 fixed contact brackets
3' fixed contact brackets
4 movable contact members
Contact members movable 4'
5 movable contact brackets
6 commanding apparatus
6' commanding apparatus
7 fulcrums
8 produce the element for the power for starting shipment action
8' produces the element for the power for starting shipment action
9 application points
9' application points
10 are fixed on the bearing at housing
11 are fixed on the support at housing
12 start shipment application points of the power F1 of action at bearing
13 start shipment the power F1 of action application points of the power F1 in movable contact cradle
14 slide plates
15 rollers
16 are fixed on the run-on point at housing
The section of 17 bendings
18 end pieces
18' end pieces
19 access terminals (Zugangsklemme, sometimes referred to as close to terminal)
20 access terminals
21 circuits
22 circuits
F1 starts shipment the power of action
F2 contact forces
F3 steering forces
The a1 arm of forces
A2 load arms.
Embodiment
Fig. 1 schematically and schematically illustrates the switching device 1 with isolating material housing.In switching device 1
Being stretched between two access terminals 19,20 has current path (Strompfad).The current path can be in contact position
Disconnected and closure.Contact position is formed using fixed contact members 2 and movable contact members 4.Fixed contact members 2 are placed in fixation
At contact bracket 3.Fixed contact bracket 3 is in the connection of electricity by circuit 21 with access terminal 19.Movable contact members 4 are consolidated
It is scheduled at movable contact bracket 5.Movable contact bracket 5 is in the connection of electricity by circuit 22 with access terminal 20.
Movable contact bracket 5 is configured to the load arm a2 of lever.Movable contact members 4 are positioned at load arm a2 in Fig. 1
In left side end.Load arm a2 is placed at the support 11 being fixed at housing using the end on the right side of it.In fixation
The fulcrum 7 of lever is formed with support 11 at housing, lever can be swung around the fulcrum 7.Lever is single-arm lever.Gu
It is scheduled on the bearing 12 at housing and is located at the opposite of support 11 being fixed at housing.This is a kind of Longitudinal extending, to be fixed on shell
The beam that mode at body is disposed, the beam is approximately parallel to lever (i.e. movable contact bracket 5) using its Longitudinal extending direction and prolonged
Stretch.
Cylindrical pressure spring 8 works between the bearing 10 that is fixed at housing and movable contact bracket 5.Cylinder pressure
Power spring 8 represents to produce the element for the power for starting shipment action herein merely illustratively, a kind of to promote be fixed at housing
The element of the elastic force played reset role between bearing 10 and movable contact bracket 5.Cylindrical pressure spring has in fixation
The application point 12 at bearing 10 at housing and the application point 13 at movable contact bracket 5.Cylindrical pressure spring 8 is pushed away
Press movable contact bracket 5 and therefore push movable contact members 4 against fixed contact members 2.
Cylindrical pressure spring 8 can be shifted parallel to movable contact bracket 5.For this cylindrical pressure spring 8 and therefore
Its application point 12,13 at bearing 10 and movable contact bracket 5 is displaceably supported by.Displacement is due to the work of commanding apparatus
With and occur.It symbolically shows that the operating lever 6 can be in on-position and off-position by operating lever 6 herein
Between swing, and effectively connecting line shown into dotted line between operating lever 6 and cylindrical pressure spring 8.Effectively connection is real
It can be constructed on border in known mode in principle, such as by means of the machine with locking position (Verklinkungsstelle)
The switching device (Schaltwerk) of tool, or pass through motor drive or magnetic drive unit.It it is unnecessary to explain the present invention's
Action principle shows the details effectively connected between commanding apparatus and cylindrical pressure spring 8.
Application the term commonly used for lever system in the case of lever in fulcrum 7 and cylindrical pressure spring 8
The arm of force of the section formation with length a1 extended between application point 9 on lever.Lever in fulcrum 7 and on lever
Load arm of the section formation with length a2 extended between movable contact members 4.Lever is single-arm lever.The arm of force and load arm
It is located together, they have different length.
The power that cylindrical pressure spring 8 is applied in application point 13 on arm of force a1 is to start shipment the power F1 of action.Movable
Contact members 4 using its be pushed against fixed contact members 2 power be contact force F2.Contact force F2 applies as by load arm a2
Loading force produce.It is required using in order that the power that shifts parallel to lever of cylindrical pressure spring 8 is steering force F3.
Because lever rule is applicable：F1×a1=F2×a2.Drawn according to F2 adjustment：
。
It is to determine in the spring force F1 designs played reset role, what same arm of force a2 length was to determine.Item (F1/a2)
It is constant therefore, it is possible to be regarded as in first approximation.Draw：
。
Contact force F2 is proportional to arm of force a1 length.It can change contact force by making the displacement of cylindrical pressure spring 8.In order to
Engaging means select a1 as wide as possible, and cylindrical pressure spring 8 is by means of commanding apparatus 6 as far as possible to left movement.In order to
Breaking-off contact position makes a1 as small as possible, and cylindrical pressure spring 8 is moved right as far as possible by means of commanding apparatus 6.In order to
Make cylindrical pressure spring 8 move required steering force F3 (steering force F3 must be applied by commanding apparatus 6) to be considerably smaller than
The power F1 and contact force F2 played reset role.
F3 only have to overcome in cylindrical pressure spring 8 and the bearing 10 and movable contact that are fixed at housing in principle
The frictional force at application point 12,13 between bracket 5.Start shipment the power F1 of action for foring for this cylindrical pressure spring 8 and exist
The support of application point 12,13 at bearing 10 and movable contact bracket 5 becomes readily to play slip by making displacement
Slide plate 14 is formed.Steering force is therefore very small.Big contact force can be produced using small steering force.
Another spring element can act at movable contact bracket 5 and the movable contact bracket of loading is for disconnection
For swinging in the clockwise direction away from fixed contact members 2.Such element is not shown here.But so the element this
Sample is designed, that is, make it that very the right is in open position and contact force F2 is according to equation (2) only when cylindrical pressure spring 8 is located at
Become very hour, power effect of the element to movable contact bracket 5 just plays effect.
The end pieces 18 of bending are formed with the end away from movable contact members 4 of movable contact lever 5.The end
Part with fulcrum 7 be starting point it is convex be bent upwards away from being fixed on support 11 at housing.In order to which breaking-off contact position is manipulated
Equipment 6 makes application point 9 of the cylindrical pressure spring 8 at lever be displaced in the region of end pieces 18 of bending, so that cylinder pressure
Then power spring 8 is forced against the recessed inner side of the end pieces 18 of bending.Then the end pieces of bending work as lever arm,
By means of lever arm contact lever 5 movable under the influence of cylindrical pressure spring 8 on one's own initiative on direction is disconnected (in figure
It is in the clockwise direction) swing.
Fig. 2 a and 2b show another embodiment of the present invention.The embodiment is different from Fig. 1 in the following manner
In the embodiment that shows, i.e., in this cylindrical pressure spring 8' in the way of the run-on point 16 that can be secured around at housing is swung
It is supported by and contact lever 5' has the section (17) bent.Start shipment application points of the power F1 of action at lever 5' 9'
In the region of the section 17 of bending and can be by means of commanding apparatus 6' with the branch at the surface profile of the section 17 of bending
The mode of support is swung.As learnt from Fig. 2 a and 2b, according to the present invention function in addition with figure 1 illustrates implementation
It is identical in mode.Steering force F3 is also considerably smaller than contact force F2 herein.
Claims (8)
1. a kind of switching device (1) with contact system, the contact system includes the fixation provided with fixed contact members (2) and touched
Head bracket (3) and the movable contact bracket (5) provided with movable contact members (4), and the contact system is with for breaking
The commanding apparatus (6) at the contact position by fixed and movable contact members (2,4) formation is opened or closes, wherein in the contact
Position close when the contact members (2,4) in the presence of contact force (F2) against each other, wherein the contact system include band
There are load arm (a2), the lever of the arm of force (a1) and fulcrum (7) and the movable contact bracket (5) is configured to the lever
Load arm, wherein the contact force (F2) is used as the loading force applied by the load arm (a2) to produce, it is characterised in that institute
Stating contact system includes element (8), and the element (8) acts power (F1) on the lever, to start shipment action, wherein
The element (8) of power (F1) of the length of the arm of force (a1) by the fulcrum (7) with starting shipment action described in generation exists
The distance of application point (9) at the lever is determined, the power (F1) of action is started shipment described in the commanding apparatus (6) and generation
Element (8) is in effectively connection and will make described to start shipment the application point of the power (F1) of action at the lever
(9) operating physical force (F3) for shifting and therefore changing the length of the arm of force (a1) is applied to the power that action is started shipment described in generation
(F1) on the element (8).
2. switching device (1) according to claim 1, it is characterised in that the power (F1) of action is started shipment described in producing
The element (8) is worked and described between the bearing (10) and the movable contact bracket (5) being fixed at housing
The power (F1) of action is started shipment in the application point (12,13) at the bearing (10) and described movable contact bracket (5) place with can
Mode by means of the commanding apparatus (6) parallel to movable contact bracket (5) displacement is supported by.
3. switching device (1) according to claim 2, it is characterised in that the power (F1) that action is started shipment described in being formed exists
The support of the application point (12,13) at the bearing (10) and described movable contact bracket (5) place passes through roller (15) formation.
4. switching device (1) according to claim 2, it is characterised in that the power (F1) that action is started shipment described in being formed exists
The support of the application point (12,13) at the bearing (10) and described movable contact bracket (5) place passes through slide plate (14) formation.
5. switching device (1) according to claim 2, it is characterised in that the power (F1) that action is started shipment described in being formed exists
The support of the application point (12,13) at the bearing (10) and described movable contact bracket (5) place utilizes ball bearing shape
Into.
6. switching device (1) according to claim 1, it is characterised in that the power (F1) of action is started shipment described in producing
(8') the element is supported by the way of the run-on point (16) that can be secured around at housing is swung, and the contact lever is (5')
(9') section (17) with bending, the power (F1) for starting shipment action be located at described in the application point that (5') lever is located
In the region of the section (17) of bending and can be by means of the commanding apparatus (6') with the section of the bending (17)
The mode supported at surface profile is swung.
7. switching device (1) according to any one of the preceding claims, it is characterised in that in the movable contact thick stick
The end away from the movable contact members (4,4') of bar (5,5') be formed with angulation or bending end pieces (18,
18'), and in order to disconnect commanding apparatus (6,6') described in the contact position to make the power for action being started shipment described in generation it is described
Application point (9,9') of the element (8,8') at the lever is displaced to the angulation or bending end pieces (18,18')
In region.
8. switching device (1,1') according to any one of the preceding claims, it is characterised in that produce described rise and move
The element (8,8') of the power of effect is the flexible member for producing the elastic force played reset role.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015117324.7 | 2015-10-12 | ||
| DE102015117324.7A DE102015117324A1 (en) | 2015-10-12 | 2015-10-12 | Switching device with a contact system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106960731A true CN106960731A (en) | 2017-07-18 |
Family
ID=56801467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610886058.XA Pending CN106960731A (en) | 2015-10-12 | 2016-10-11 | Switching device with contact system |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3157035A1 (en) |
| CN (1) | CN106960731A (en) |
| DE (1) | DE102015117324A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114521280A (en) * | 2019-09-13 | 2022-05-20 | 比亚乔及C.股份公司 | Key switch |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017123202B4 (en) | 2017-10-06 | 2019-08-14 | Abb Schweiz Ag | Switchgear with a hinged armature magnet system |
| DE102017123203B4 (en) | 2017-10-06 | 2021-03-18 | Abb Schweiz Ag | Switching device with switching mechanism and electromagnetic actuator |
| CN109326463A (en) * | 2018-10-24 | 2019-02-12 | 首瑞（天津）电气设备有限公司 | A kind of electric appliance component |
| CN109216054A (en) * | 2018-10-24 | 2019-01-15 | 首瑞（天津）电气设备有限公司 | A kind of electric appliance component |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB499496A (en) * | 1937-07-24 | 1939-01-24 | Tucker J H & Co Ltd | Improvements relating to electric switches for use in alternating current circuits |
| CH272746A (en) * | 1949-01-26 | 1950-12-31 | Oerlikon Maschf | Contact device for heavy current. |
| DE3347120A1 (en) * | 1983-12-22 | 1985-07-11 | Siemens AG, 1000 Berlin und 8000 München | ELECTRO-DYNAMIC OPENING CONTACT SYSTEM |
| DE3737539A1 (en) | 1987-11-05 | 1989-05-18 | Asea Brown Boveri | ELECTRICAL INSTALLATION SWITCHGEAR |
| DE102006044055B4 (en) * | 2006-09-20 | 2009-04-09 | Abb Ag | Electrical switching device with at least one contact point |
| JP5903253B2 (en) * | 2011-11-24 | 2016-04-13 | 株式会社ヴァレオジャパン | Switch device |
| DE102013017381A1 (en) | 2013-10-21 | 2015-04-23 | Abb Ag | Installation switching device with a switching contact |
-
2015
- 2015-10-12 DE DE102015117324.7A patent/DE102015117324A1/en active Pending
-
2016
- 2016-08-26 EP EP16185818.8A patent/EP3157035A1/en not_active Withdrawn
- 2016-10-11 CN CN201610886058.XA patent/CN106960731A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114521280A (en) * | 2019-09-13 | 2022-05-20 | 比亚乔及C.股份公司 | Key switch |
| CN114521280B (en) * | 2019-09-13 | 2024-03-12 | 比亚乔及C.股份公司 | Key switch |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102015117324A1 (en) | 2017-04-13 |
| EP3157035A1 (en) | 2017-04-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170718 |