CN103913212A - Small hand balance with portable movement - Google Patents
Small hand balance with portable movement Download PDFInfo
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- CN103913212A CN103913212A CN201310593830.5A CN201310593830A CN103913212A CN 103913212 A CN103913212 A CN 103913212A CN 201310593830 A CN201310593830 A CN 201310593830A CN 103913212 A CN103913212 A CN 103913212A
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- spring
- wire diameter
- steelyard
- small
- line
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Abstract
The invention discloses a small hand balance with a portable movement. The small hand balance comprises a balance arm, an upper support and a lower support, and is characterized in that a cylinder body is arranged in an inner cavity of the balance arm, the upper support and the lower plastic support are arranged in the middle inside the cylinder body, the two supports are provided with small pulley assemblies, the small pulley assemblies are connected through a flexible steel wire (rope) into a loop to be sleeved with an integrated big-end-up slide spring, the wire diameter of the spring is large in head and small in tail to form a rat tail shape, the spring is pressed on a lower plastic support spring base in an inverted mode through a thin star plate and fastened through a wood bud thread, the top of the spring is provided with a stainless steel thin shield plate, the inner diameter of the cylinder body is equal to that of the stainless steel shield plate, a rectangular window through which the steel wire can move is formed in the middle of the stainless steel thin shield plate, a small hole through which the flexible steel wire is bent is formed in the right side of the middle of the stainless steel thin shield plate, and after the flexible steel wire is bent, an original circulating mode is changed into a vertical stroke mode. An induction spring corresponding to a balance force spring is arranged below the lower plastic support, and cylinders are evenly distributed inside the circumference of an effective stroke to penetrate through copper contacts of the cylinder body and are connected with a copper-foil dragon annular belt to a display screen. According to the small hand balance with the portable movement, a movement device and the performance of the spring are combined, the problem that an existing hand balance is not portable due to the fact that the size of a balance arm is large is solved, the risk of giving a short weight is reduced, and a trade is more fair.
Description
Technical field
Patent of the present invention relates to a kind of measurer, more specifically says the light little hand scale of kind of movement.
Background technology
The arm beam of steelyard is the product of kind of left over by history in people's life, and it is kind of the generally acknowledged product of fair and just both sides in all meter weight body transaction.As weighing the sole criterion of weight, promoting social equity arm's length transaction, do economic prosperity well and play great effect.
Mostly occur giving short weight very general for market transaction consumption on present society for a long time.Comparatively outstanding by its cheap-Jack, the arm beam of steelyard that particularly can adjustment especially hidden danger the more, has the space of exercising one's ability to bad unscrupulous merchant, and fair and just where to talk.
Summary of the invention
The object of patent of the present invention is to provide a kind of practicality, accurately, does not establish adjustment (having calibrated when production) function and weighed the light little hand scale of movement converting in one.
For achieving the above object, the technical solution adopted in the present invention is: the light little hand scale of movement, comprise: the arm beam of steelyard, upper bracket, plastics lower carriage, it is characterized in that: arm beam of steelyard inner chamber is provided with cylinder, in the middle of body, be provided with upper bracket, plastics lower carriage, two stands is all established small sheave assembly, by bar mild steel line (rope), its upper and lower string bridging being tied to a circulating device is enclosed within the up big and down small line position spring of a bodily form, the large tail mouse of its spring wire diameter head shape of tail, is pressed its by piece and the large thin starboard of barrel bore that to put upside-down mounting wood bud silk on the spring base of plastics lower carriage fastening.Piece is established at its top and barrel bore is equal, centre has the Thin Stainless Steel cover plate for mild steel line motion rectangular window, in the middle of this thin cover plate, an aperture is established again for mild steel line two ends knot folding in right side apart from 1.5 millimeters of places of edge of window, after knot folding, becomes uplink and downlink range device from former circulating device.Below plastics lower carriage, establish cone space mounting induction spring, it is corresponding with the weighing apparatus power spring of upper bracket, its wire diameter first, last wire diameter is slightly larger than line position spring first, last wire diameter, its end wire diameter is less than again weighing apparatus power spring end wire diameter, the wire diameter of weighing apparatus power spring end, but the first footpath of weighing apparatus power spring only has the first footpath 2/3rds of induction spring.Cylinder is evenly used in effective travel circumference
the solid copper wire of wire diameter is every 0.6 distance, and from top to bottom step is laid the copper contact through stack shell, and it draws note circuit board formation one calculation element that joins with the pool copper dragon endless belt of stack shell appearance, and 0, upper termination switch is to display screen.The arm beam of steelyard is connected in aggregates with display screen, inside have battery, and circuit board and button complete calculating memory function.
Preferably, in the middle of in described cylinder, be provided with upper bracket, plastics lower carriage, two stands is provided with small sheave assembly, by bar mild steel line, upper and lower link is formed to the mechanical theory of a circulating device, in its two stands, all establish induction spring and weighing apparatus power spring, two springs are corresponding, keep the power of a upper and lower balance to refuse.
Preferably, at described line position spring, it is loaded on plastics lower carriage, by piece and the large thin starboard of barrel bore, its is pressed to put upside-down mounting fastening with wood bud silk on spring base, its form is up big and down small, and the large tail mouse of wire diameter head shape of tail, adopt wire diameter mutation and around footpath, it is large that line-spacing becomes gradually, littlely obtain less power and refuse and wire diameter is more long, the large Thin Stainless Steel cover plate of piece circle internal diameter is established on its top, in the middle of this thin cover plate, open a rectangular window for the motion of mild steel line, separately in window right side, an aperture is established again for mild steel toe-in folding in 1.5 millimeters, spacing limit, after knot folding, make former circulating device become up-downgoing range device.
Preferably, below described plastics lower carriage, be provided with cone space, inside establish induction spring, it is corresponding with upper bracket weighing apparatus power spring, three spring wire diameters in the arm beam of steelyard are all the mutation springs of the large tail mouse shape of tail of head, wherein respond to spring wire diameter more bigger than line position spring, moment is also maximum, line position spring changes more responsive, weighing apparatus power spring is to keep the weighing apparatus power of mild steel line, its end wire diameter is greater than the end wire diameter of responding to spring, and that the different power of length is refused is also different, and the short power of length is refused should be compared with long larger of length.
Preferably, be provided with small sheave assembly in described lower beam, it is corresponding with the small sheave assembly of upper bracket, links string across two small sheaves by bar mild steel line, sells off for stroke apparatus at Thin Stainless Steel starboard rectangular opening aperture knot; In the time that stalk hook has weight, the induction spring being enclosed within outside lower beam will there will be a stress, lower beam can produce bearing down and refuse, small sheave is rolled at cover plate knot across small sheave by mild steel line rectangular opening to upper bracket string in the Thin Stainless Steel cover plate of line position spring, to making line position spring and then descending, at this moment line position spring is refused to equate with the power of induction spring, and its lower line space depends on weight.
Preferably, in described cylinder, in effective travel circumference, evenly use
the solid copper wire of wire diameter is every 0.6 distance, and from top to bottom step is laid the copper contact through stack shell, and it draws note circuit board formation one calculation element that joins with the pool copper dragon endless belt of stack shell appearance, and upper termination switch 0 is to display screen.
Preferably, the described arm beam of steelyard and display screen connect in aggregates, on have bracelet, stage casing is the effective travel in the arm beam of steelyard, connects 0, switch to display screen by printed circuit board (PCB), and the battery that button is contained in the arm beam of steelyard in appearance, side is established dress and is changed battery window, under be steelyard hook, this arm beam of steelyard is proofreaded accurately in process of production, does not establish calibration apparatus.
Patent of the present invention adopts said structure, it is configured to core device and has solved the very much not shortcoming of Portable belt of arm beam of steelyard volume in prior art in conjunction with being provided with upper and lower in arm beam of steelyard inner chamber with three wire diameter mutation springs, and the portable phenomenon of giving short weight that significantly reduces of the arm beam of steelyard occurs.Compact conformation of the present invention, adopts plastic cement structure, and volume is little, lightweight, portable, easy to operate, effectively avoids the defect of the difficult band of the arm beam of steelyard.
Fig. 1 is the main cut-open view of patent of the present invention.
Fig. 2 is that the master of patent of the present invention cuts open front view (FV).
Fig. 3 is that the seat of patent of the present invention is looked component drawings.
In figure: 1, the arm beam of steelyard 11, cylinder 2, upper boom 21, upper bracket 22, small sheave assembly 23, weighing apparatus power spring 24, nut 25, plain cushion 26, bracelet 3, lower beam 31, plastics lower carriage 32, small sheave assembly 33, induction spring 34, thin starboard 35, wood bud silk 36, steelyard hook 4, mild steel line (rope) 5, line position spring 51, Thin Stainless Steel cover plate 6, wearing layer 61, copper contact 62, pool copper dragon endless belt 7, display screen 71, battery 72, circuit board 73, button
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail to explanation:
As shown in the figure, the light little hand scale of movement, comprise: the arm beam of steelyard 1, upper bracket 21, plastics lower carriage 31, it is characterized in that: the inner chamber of the arm beam of steelyard is provided with cylinder 11, in the middle of in body, there is upper bracket 21, plastics lower carriage 31, two stands is all established small sheave assembly 22,32, by bar mild steel line (rope) 4, its upper and lower link one circulating device is enclosed within the up big and down small line position spring 5 of a bodily form, the large tail mouse of its wire diameter head shape of tail, puts upside-down mounting by thin starboard 34 pressures and on the spring base of plastics lower carriage 31, uses wood bud silk 35 fastening.Piece and the equal middle Thin Stainless Steel cover plate 51 having for mild steel line 4 motion rectangular windows of barrel bore are established in its top, in the middle of this thin cover plate 51, the two ends knot folding of an aperture for mild steel line 4 established on right side again apart from 1.5 millimeters of places of edge of window, after knot folding, becomes uplink and downlink range device from former circulating device.Below plastics lower carriage 31, establish cone space mounting induction spring 33, it is corresponding with the weighing apparatus power spring 23 of upper bracket 21, its wire diameter first, last is all slightly larger than line position spring 5 first, last wire diameters, its end wire diameter is less than again the wire diameter of weighing apparatus power spring 23 ends, but the first footpath of weighing apparatus power spring only has the first footpath 2/3rds of induction spring 33.Cylinder 11 is evenly used in effective travel circumference
the solid copper wire of wire diameter is every 0.6 distance, from top to bottom step is laid the copper contact 61 through stack shell, the pool copper dragon endless belt 62 of it and stack shell appearance causes circuit board and joins and form a calculation element, 0, upper termination switch is to display screen 7, the arm beam of steelyard 1 connects in aggregates with display screen 7, inside have battery 71, circuit board 72 and button 73 complete calculating memory function.
Preferably, be provided with upper bracket 21, plastics lower carriage 31 in the interior centre of described cylinder 11, two stands is provided with small sheave assembly 22,32, by bar mild steel line 4, upper and lower link is formed to the mechanical theory of a circulating device, interior induction spring 33 and the weighing apparatus power spring 23 all established of its two stands 21,31, two springs are corresponding, keep the power of a upper and lower balance to refuse.
Preferably, at described line position spring 5, it is loaded on protruding plastics lower carriage 31, by piece and the large thin starboard (34) of barrel bore, its is pressed to put upside-down mounting fastening with wood bud silk 35 on spring base, its form is up big and down small, and the large tail mouse of wire diameter head shape of tail, adopt wire diameter mutation and around footpath, line-spacing is large gradually, and the more long less less moment of obtaining of wire diameter, the large Thin Stainless Steel cover plate 51 of its She Kuai garden, top internal diameter, in the middle of this thin cover plate 51, opening a rectangular window moves for mild steel line 4, separately in window right side, an aperture is established again for mild steel line 4 knot foldings in 1.5 millimeters, spacing limit, after knot folding, make former circulating device become up-downgoing range device.
Preferably, below described plastics lower carriage 31, be provided with cone space, inside establish induction spring 33, it is corresponding with the upper bracket 21 power spring 23 that weighs.Three spring wire diameters in the arm beam of steelyard 1 are all the mutation springs of the large tail mouse shape of tail of head, wherein respond to spring 33 wire diameters more bigger than line position spring 5, moment is also maximum, line position spring 5 changes more responsive, weighing apparatus power spring 23 is to keep the weighing apparatus power of mild steel line 4, its end wire diameter is greater than the end wire diameter of responding to spring 33, and the different moment of length is also different, and it is larger that the short moment of length should be grown compared with length.
Preferably, be provided with small sheave assembly 32 in described lower beam 3, it is corresponding with the small sheave assembly 22 of upper bracket 21, links string across two small sheaves 32,22 by bar mild steel line 4, sells off for stroke apparatus at Thin Stainless Steel cover plate 51 rectangular opening aperture knots; In the time that steelyard hook 36 has weight, the induction spring 33 being enclosed within outside lower beam 3 will there will be a stress, lower beam 3 can produce has bearing down to refuse, small sheave 32 is gone here and there across small sheave 22 at cover plate knot folding by mild steel line 4 rectangular opening to upper bracket 21 in the Thin Stainless Steel cover plate 51 of line position spring 5, to making line position spring 5 and then descending, at this moment line position spring 5 is refused to equate with the power of induction spring 33, and its lower line space depends on weight.
Preferably, in described cylinder 11, in effective travel circumference, evenly use
the solid copper wire of wire diameter is every 0.6 distance, and from top to bottom step is laid the copper contact 61 through stack shell, and it draws note circuit board 72 formation one calculation element that joins with the pool copper dragon endless belt 62 of stack shell appearance, and 0, upper termination switch is to display screen.
Preferably, connect in aggregatesly at the described arm beam of steelyard 1 and display screen, above have bracelet 26, stage casing is the effective travel in the arm beam of steelyard 1, connects switch 0 to display screen by printed circuit board (PCB) 72, and the battery 71 that button 73 is contained in the arm beam of steelyard 1 in appearance, side is established dress and is changed battery window, under be steelyard hook 36.This arm beam of steelyard 1 location of proofreading in process of production, does not establish calibration apparatus.
Principle of work:
While using the arm beam of steelyard 1, first load onto battery 71, stamp display screen for switch 7 and be 0.In the time that steelyard hook 36 has weight of object, the small sheave 32 of the plastics lower carriage 31 in steelyard hook 36 and lower beam 3 is with regard to the moment of oriented tenesmus, this moment is passed to the small sheave 22 in upper bracket 21 by bar mild steel line (rope) 4, there is downward moment to exist thereupon, but mild steel line 4 is by the Thin Stainless Steel cover plate at line position spring 5 tops knot folding, the moment that makes original circulating device become upper and lower stroke half circulating device slides a distance downwards, the weight of the much objects of getting steelyard hook 36 of coasting distance, heavier its stroke of weight is just larger.Due to three springs, to be all made as mouse shape of tail end wire diameter less, the light little moment that wire diameter end is less of just obtaining of object, if same object has weighed, its downward moment is also large, stroke distances is also just large, and when the object on steelyard hook 36 is eliminated, small sheave 32 moments in lower beam 3 disappear, the moment of the arm beam of steelyard 1 does not exist, and mild steel line 4 is automatically answered 0 under the restoring force of line position spring 5.For ease of processing, line position spring 5 can be round at whole spring 1/3rd head ends, 2nd/3rd, and rectangle.
In cylinder 11, in effective travel circumference, use
the solid copper wire of wire diameter is every 0.6 distance, and from top to bottom step is laid the copper contact 61 through stack shell, it and the pool copper dragon endless belt 62 of stack shell appearance formation one calculation element that joins, and 0, upper termination switch is to counter.
The above is the preferred embodiment of the present invention; certainly can not limit with this interest field of the present invention; should be understood that; for the member of ordinary skill of the art, technical scheme of the present invention is modified or is equal to the protection domain that replacement does not depart from technical solution of the present invention.
Claims (7)
1. patent of the present invention is the light little hand scale of kind of movement, comprise: the arm beam of steelyard (1), upper bracket (21), plastics lower carriage (31), the arm beam of steelyard (1) inner chamber is provided with cylinder (11), in the middle of in its body, be provided with upper bracket (21), plastics lower carriage (31), two stands is equipped with small sheave assembly (22, 32), by bar mild steel line (rope) (4), it is linked up and down and forms a circulating device, be enclosed within a bodily form up big and down small, and in the line position spring (5) of the large tail mouse of wire diameter head shape of tail, press and put upside-down mounting on plastics lower carriage (31) seat by the equal large thin starboard (34) of piece diameter, fastening with wood bud silk (35).Piece is established at its top and cylinder (11) supplies the Thin Stainless Steel cover plate (51) of mild steel line (4) motion with having rectangular window in the middle of footpath, the two ends of mild steel line (4) is established an aperture through knot folding apart from 1.5 millimeters of middles of edge of window on thin cover plate (51) right side, the small sheave assembly (22,32) that makes upper and lower support (21,31) becomes half circulating device of upper and lower stroke from former circulation.In plastics lower carriage (31), be provided with lower beam (3) small sheave assembly (32), in the middle of it, establish a cone space, inside be provided with induction spring (33), the wire diameter of the bigger line position spring of first, last wire diameter (5) of spring, corresponding with the weighing apparatus power spring (23) of upper bracket (21), its end wire diameter is less than again the wire diameter of weighing apparatus power spring (23) end, and weighing apparatus power spring (23) head end wire diameter only has 2/3rds of induction spring.Cylinder (11) is evenly used in effective travel circumference
the solid copper wire in footpath every 0.6 millimeter from top to bottom ladder-type lay through the copper contact (61) of stack shell and the pool copper of stack shell appearance dragon endless belt (62) formation one calculation element that joins, upper termination switch 0 is to display screen.The arm beam of steelyard (1) is even in aggregates with display screen (7), inside has battery (71) circuit board (72) and button (73) to complete calculating memory function.
2. the light little hand scale of movement according to claim 1, it is characterized in that: in described cylinder (11), be provided with upper bracket (21), plastics lower carriage (31), small sheave assembly (22,32) and mild steel line (4) form a circulating device.Described circulating device is stepped up lower link by the small sheave assembly of upper and lower support (21,31) (22,32) by bar mild steel line (4) string exactly and is realized.
3. the light little hand scale of movement according to claim 1, it is characterized in that: at described line position spring (5), it is loaded on protruding plastics lower carriage (31), by piece and the large thin starboard (34) of barrel bore, its is pressed to put upside-down mounting fastening with wood bud silk (35) on spring base, its form is up big and down small, and the large tail mouse of wire diameter head shape of tail, adopt wire diameter mutation and around footpath, line-spacing becomes greatly gradually, littlely obtains less power and refuses and wire diameter is more long.The large Thin Stainless Steel cover plate (51) of piece circle internal diameter is established on its top, in the middle of this thin cover plate, open a square windowing for mild steel line (4) motion, separately in window right side, an aperture is established again for mild steel toe-in folding in 1.5 millimeters, spacing mouth limit, after knot folding, makes former circulating device become up-downgoing range device.
4. the light little hand scale of movement according to claim 1, it is characterized in that: be provided with cone space in described plastics lower carriage (31) below, inside be provided with induction spring (33), it is corresponding with the weighing apparatus power spring (23) in upper bracket (21), three spring wire diameters in the arm beam of steelyard (1) are all the mutation springs of the large tail mouse shape of tail of head, wherein respond to spring (33) wire diameter more bigger than line position spring (5), it is also maximum that power is refused, line position spring (5) changes more responsive, weighing apparatus power spring (23) is to keep the weighing apparatus power of mild steel line (4), its end wire diameter is greater than the end wire diameter of induction spring (33), and the different power of length is refused also difference, the short power of length is refused should be compared with long larger of length.
5. the light little hand scale of movement according to claim 1, it is characterized in that: in described lower beam (3), be provided with small sheave assembly (32), it is corresponding with the small sheave assembly (22) of upper bracket (21), gone here and there across two small sheaves (32) (22) by bar mild steel line (4), sell off for stroke apparatus at Thin Stainless Steel cover plate (51) the rectangular opening aperture knot at line position spring (5) top; In the time that steelyard hook (36) has weight, be enclosed within the outer induction spring (33) of lower beam (3) and will there will be a stress, lower beam (3) can produce has the power of tenesmus to refuse, small sheave assembly (32) forms a power across small sheave (22) at cover plate knot folding to upper bracket (21) string by mild steel line (4) rectangular opening in the Thin Stainless Steel cover plate (51) of line position spring (5) and refuses to transmit circle, to making, line position spring (5) is and then descending, at this moment line position spring (5) is refused to equate with the power of induction spring (33), and its lower line space depends on weight.
6. the light little hand scale of movement according to claim 1, it is characterized in that: in described cylinder (11), in effective travel circumference, evenly use the solid copper wire in ￠ 0.4 footpath every 0.6 distance, from top to bottom step is laid the copper contact (61) through stack shell, pool copper dragon endless belt (62) outside it and stack shell draws note circuit board (72) and joins and form a calculation element, and upper end opens 0 to display screen.
7. the light little hand scale of movement according to claim 1, it is characterized in that: connect in aggregates at the described arm beam of steelyard (1) and display screen (7), on have bracelet, stage casing is the effective travel in the arm beam of steelyard (1), by 0 of printed circuit board (PCB) drag switch to display screen, battery (7) appearance of button in the arm beam of steelyard (1) is upper and lower is steelyard hook (36), this arm beam of steelyard (1) is proofreaded accurately in process of production, does not establish calibration apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310593830.5A CN103913212B (en) | 2013-11-22 | 2013-11-22 | The light little hands scale of movement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310593830.5A CN103913212B (en) | 2013-11-22 | 2013-11-22 | The light little hands scale of movement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103913212A true CN103913212A (en) | 2014-07-09 |
| CN103913212B CN103913212B (en) | 2016-06-08 |
Family
ID=51039073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310593830.5A Expired - Fee Related CN103913212B (en) | 2013-11-22 | 2013-11-22 | The light little hands scale of movement |
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| Country | Link |
|---|---|
| CN (1) | CN103913212B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191504800A (en) * | 1915-03-27 | 1916-03-16 | Anonima Cooperativa A Capitale | Improvements in Weighing Apparatus. |
| CN87201184U (en) * | 1987-03-31 | 1987-12-02 | 黄曾新 | Multirange spring balance |
| CN86210477U (en) * | 1986-12-17 | 1987-12-23 | 任玉兰 | Multi-functional spring scale |
| CN2180983Y (en) * | 1993-12-14 | 1994-10-26 | 辜英求 | Precision spring balance |
| CN2245213Y (en) * | 1995-08-25 | 1997-01-15 | 徐文光 | Portable spring balance with digital disc |
| CN201034706Y (en) * | 2007-05-19 | 2008-03-12 | 八达机电有限公司 | Simple weightiness displaying alarm |
-
2013
- 2013-11-22 CN CN201310593830.5A patent/CN103913212B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191504800A (en) * | 1915-03-27 | 1916-03-16 | Anonima Cooperativa A Capitale | Improvements in Weighing Apparatus. |
| CN86210477U (en) * | 1986-12-17 | 1987-12-23 | 任玉兰 | Multi-functional spring scale |
| CN87201184U (en) * | 1987-03-31 | 1987-12-02 | 黄曾新 | Multirange spring balance |
| CN2180983Y (en) * | 1993-12-14 | 1994-10-26 | 辜英求 | Precision spring balance |
| CN2245213Y (en) * | 1995-08-25 | 1997-01-15 | 徐文光 | Portable spring balance with digital disc |
| CN201034706Y (en) * | 2007-05-19 | 2008-03-12 | 八达机电有限公司 | Simple weightiness displaying alarm |
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| Publication number | Publication date |
|---|---|
| CN103913212B (en) | 2016-06-08 |
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| DD01 | Delivery of document by public notice |
Addressee: Zhang Youzong Document name: Notification of Passing Preliminary Examination of the Application for Invention |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160608 Termination date: 20201122 |