CN213812028U - High-precision weld joint detection ruler - Google Patents
High-precision weld joint detection ruler Download PDFInfo
- Publication number
- CN213812028U CN213812028U CN202023343155.5U CN202023343155U CN213812028U CN 213812028 U CN213812028 U CN 213812028U CN 202023343155 U CN202023343155 U CN 202023343155U CN 213812028 U CN213812028 U CN 213812028U
- Authority
- CN
- China
- Prior art keywords
- scale
- vernier
- connecting piece
- piece
- groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 29
- 238000003466 welding Methods 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 238000000926 separation method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 210000002262 tip cell Anatomy 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
Images
Abstract
The application relates to a high-precision welding seam detection ruler which comprises a scale and a vernier scale, wherein the vernier scale and the scale are perpendicular to each other; be provided with the connecting piece between vernier scale and the scale, the connecting piece is used for connecting vernier scale and leads to the motion of vernier scale and scale. This application is through setting up scale, vernier and connecting piece, when adjusting scale and vernier, the connecting piece is connected scale and vernier to the connecting piece leads to the motion of scale and vernier to make scale and vernier keep the vertical state, and then increase the detection accuracy that detects the chi.
Description
Technical Field
The application relates to the technical field of inspection measurement, in particular to a welding seam detection ruler with high accuracy.
Background
Welding is a common processing technology in metal processing, and two or more pieces of metal are connected into a whole by using a welding material under the condition of high temperature or high pressure, so that a welding seam is formed at the joint of the metal, and the quality of the welding seam directly influences the metal connection strength of the welded metal. In the case of welding two metals to form a T-shaped workpiece, the detection of the weld is particularly important. Therefore, the welding seam of the T-shaped workpiece needs to be detected by using the welding seam detection ruler.
In the related art, for example, chinese utility model patent with publication number CN208750062U discloses a T-shaped joint fillet weld detection ruler, which comprises a rectangular scale and a vernier, wherein the scale and the vernier are arranged perpendicular to each other; the scale and the vernier are respectively provided with a first strip-shaped hole and a second strip-shaped hole which are arranged along the length direction, and both sides of the scale are provided with scale marks; one end of the vernier is a triangular measuring pointed end. The detection ruler can measure the sizes of the welding feet of welding pieces with different specifications and different butt joint angles.
To the correlation technique among the above-mentioned, because scale and vernier are connected through bolt and nut, so the inventor thinks when scale and vernier take place relative slip, the skew takes place easily between scale and the vernier to influence the accuracy that detects the chi, and then there is scale and vernier and produces the skew easily and influence the defect that detects the chi and detect the accuracy.
SUMMERY OF THE UTILITY MODEL
In order to alleviate scale and vernier and produce the problem that the skew influences the measuring tape and detect the accuracy easily, this application provides a high welding seam of precision and detects chi.
The application provides a high welding seam detection ruler of precision adopts following technical scheme:
a high-precision welding seam detection ruler comprises a scale and a vernier scale, wherein the vernier scale and the scale are perpendicular to each other, the vernier scale is connected with the scale in a sliding mode along the length direction of the vernier scale, and the scale is connected with the vernier scale in a sliding mode along the length direction of the vernier scale; be provided with the connecting piece between vernier scale and the scale, the connecting piece is used for connecting vernier scale and leads to the motion of vernier scale and scale.
By adopting the technical scheme, when the welding seam detection ruler is used, the relative position relation between the scale and the vernier needs to be adjusted, and then the vernier and the scale need to slide; when sliding vernier scale and scale, the connecting piece leads the slip of vernier scale and scale, and then produces the condition of skew when reducing vernier scale and scale relative slip, finally reaches the effect that increases the dipperstick and measure the accuracy.
Optionally, the connecting piece includes a first connecting piece and a second connecting piece, the first connecting piece and the second connecting piece are arranged in parallel, the first connecting piece and the second connecting piece are inserted, the first connecting piece is connected with the scale in a sliding manner, and the sliding direction of the first connecting piece is the length direction of the scale; the second connecting piece is connected with the vernier in a sliding mode, and the sliding direction of the second connecting piece is the length direction of the vernier.
Through adopting above-mentioned technical scheme, use the measuring tape to detect the completion back to the welding seam, with first connection piece and second connection piece separation, then make first connection piece and second connection piece separation, then rotate 90 degrees with first connection piece, peg graft first connection piece and second connection piece together again to make scale and vernier be in parallel state, and then make things convenient for the staff to accomodate the measuring tape.
Optionally, a clamping block is arranged on the side, facing the second connecting sheet, of the first connecting sheet, the section, parallel to the first connecting sheet, of the clamping block is square, a clamping groove matched with the clamping block is formed in the side, facing the first connecting sheet, of the second connecting sheet, and the clamping block is connected with the clamping groove in an inserting mode.
Through adopting above-mentioned technical scheme, the joint piece is on a parallel with the cross-section on the first connection piece and is the square to joint groove and joint piece cooperation can reduce first connection piece and second connection piece and take place relative pivoted condition emergence at the during operation, and then increase the stability of measuring rule during operation.
Optionally, the annular has been seted up along its circumference to the joint piece, logical groove has been seted up on the second connecting piece, lead to groove and joint groove intercommunication setting, it is provided with the locking pole to lead to the inslot, the one end of locking pole is inserted in the annular.
Through adopting above-mentioned technical scheme, the back is pegged graft together in the joint piece on first connection piece and the joint groove on the second connection piece, and the locking lever slides for in the one end insert ring groove of locking lever, make then the locking lever stop the joint piece, thereby reduce the condition emergence that first connection piece and second connection piece take place relative motion, and then increase the connection stability of first connection piece and second connection piece.
Optionally, the first connecting piece is provided with two first guide pieces, two first guide pieces are all arranged in parallel to the scale, one first guide piece is arranged on one side of the scale, and the other first guide piece is arranged on the other side of the scale.
Through adopting above-mentioned technical scheme, when the slip scale, the relative slip takes place for scale and first connecting piece, makes two first direction pieces lead to the motion of scale then, and then increases the stability when scale moves for scale and vernier scale keep the vertical state.
Optionally, the second connecting piece is provided with two second guide pieces, two of the second guide pieces are all arranged in parallel to the vernier scale, one of the second guide pieces is arranged on one side of the vernier scale, and the other of the second guide pieces is arranged on the other side of the vernier scale.
Through adopting above-mentioned technical scheme, when the slide vernier scale, the relative slip takes place for vernier scale and second connection piece, makes then two second direction pieces lead to the motion of vernier scale, and then increases the stability when vernier scale moves for vernier scale and scale keep the vertical state.
Optionally, a first waist-shaped groove has been seted up on the side of scale towards first connection piece, the length direction in first waist-shaped groove sets up in a parallel with the length direction of scale, first connection piece is provided with first spacing post on the side towards the scale, first spacing post is along the length direction and the first waist-shaped groove sliding connection of scale.
Through adopting above-mentioned technical scheme, when the scale slides, relative slip takes place for scale and first connecting piece, and when first connecting piece was located the tip of scale, first spacing post was contradicted with first waist type groove tip cell wall, makes then first spacing post spacing to the motion of scale carry on spacingly, and the condition that reduces scale and first connecting piece emergence separation takes place, increases the convenience when the staff adjusted the scale.
Optionally, a second waist-shaped groove is formed in the side, facing the vernier scale, of the second connecting piece, the length direction of the second waist-shaped groove is parallel to the length direction of the vernier scale, a second limiting column is arranged on the side, facing the vernier scale, of the second connecting piece, and the second limiting column is connected with the second waist-shaped groove in a sliding mode along the length direction of the vernier scale.
Through adopting above-mentioned technical scheme, when the slide vernier scale, the relative slip takes place for vernier scale and second connection piece, and when the second connection piece was located the tip of vernier scale, the spacing post of second was contradicted with second waist type groove tip cell wall, then made the spacing post of second spacing to carry on spacingly to the motion of vernier scale, reduced the circumstances that the separation took place for vernier scale and second connection piece and taken place, increased the convenience when the staff adjusted the vernier scale.
In summary, the present application includes at least one of the following beneficial technical effects:
1. by arranging the graduated scale, the vernier scale and the connecting piece, when the graduated scale and the vernier scale are adjusted, the connecting piece connects the graduated scale and the vernier scale and guides the movement of the graduated scale and the vernier scale, so that the graduated scale and the vernier scale are kept in a vertical state, and the detection accuracy of the detection scale is improved;
2. by arranging the first connecting piece and the second connecting piece, the first connecting piece is connected with the graduated scale in a sliding manner, the second connecting piece is connected with the vernier scale in a sliding manner, and the first connecting piece is inserted into the second connecting piece, so that the first connecting piece is separated from the second connecting piece when the measuring scale is stored, the first connecting piece is rotated by 90 degrees, and then the first connecting piece is inserted into the second connecting piece, so that the graduated scale is parallel to the vernier scale, and a worker can conveniently store the measuring scale;
3. through setting up joint piece and joint groove, the joint piece sets up on first connection piece, and the joint groove is seted up at the second connection piece, detects the chi during operation, and joint piece and joint groove cooperation make then can't take place relative rotation between first connection piece and the second connection piece, and then increase the stability of detecting the chi during operation.
Drawings
FIG. 1 is a schematic structural view of a weld detecting ruler according to the present application;
FIG. 2 is a schematic structural diagram of a connecting piece in the welding seam detection ruler of the present application;
fig. 3 is a sectional view of the weld detecting ruler of the present application, mainly showing the connection relationship between the second waist-shaped groove and the second limit post.
Description of reference numerals: 100. a graduated scale; 110. a first waist-shaped groove; 200. a vernier scale; 210. a second waist-shaped groove; 300. a connecting member; 310. a first connecting piece; 311. a clamping block; 312. a ring groove; 313. a first guide piece; 314. a first limit post; 320. a second connecting sheet; 321. a clamping groove; 322. a through groove; 323. a lock lever; 324. a second guide piece; 325. a second limit post.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses welding seam detection ruler that precision is high.
Referring to fig. 1, a high welding seam of precision detects chi includes scale 100, vernier scale 200 and connecting piece 300, and vernier scale 200 sets up in one side that scale 100 deviates from self scale, and vernier scale 200 and scale 100 perpendicular setting of each other. The connector 300 is disposed between the scale 100 and the vernier scale 200, and the connector 300 is used to connect the scale 100 and the vernier scale 200. The scale 100 is slidably connected to the connecting member 300, and the sliding direction is the length direction of the scale 100. The vernier 200 is slidably coupled to the coupling member 300 in a sliding direction of the vernier 200 in a longitudinal direction. The coupling 300 guides the movement of the scale 100 and the vernier 200 when the scale 100 or the vernier 200 moves.
Referring to fig. 1 and 2, in order to facilitate the worker's accommodation of the measuring tape, the connector 300 includes a first connecting piece 310 and a second connecting piece 320. The first connecting piece 310 and the second connecting piece 320 are both arranged in parallel with the scale 100, and the first connecting piece 310 is connected with the scale 100 in a sliding manner, and the sliding direction of the first connecting piece 310 is the length direction of the scale 100. The second connecting piece 320 is slidably connected to the vernier 200, and the sliding direction thereof is the longitudinal direction of the vernier 200. The side of the first connecting piece 310 facing the second connecting piece 320 is fixedly connected with a clamping block 311, and the section of the clamping block 311 parallel to the first connecting piece 310 is square. The second connecting piece 320 is provided with a clamping groove 321 matched with the clamping block 311 on the side surface facing the first connecting piece 310, and after the first connecting piece 310 and the second connecting piece 320 are connected together, the clamping block 311 is inserted into the clamping groove 321.
When the measuring scale is received, the first connecting piece 310 and the second connecting piece 320 are driven in a direction away from each other, and then the clamping block 311 is separated from the clamping groove 321. And then the central axis of the clamping block 311 is used as a rotation axis to rotate the first connecting piece 310 by 90 degrees, so that the scale 100 is rotated by 90 degrees, and the scale 100 is parallel to the vernier 200. And then the clamping block 311 and the clamping groove 321 are clamped together, so that the effect of bringing convenience to the worker to store the detection ruler is achieved.
Referring to fig. 1 and 2, in order to increase the stability of the first connecting piece 310 and the second connecting piece 320 during operation, the snap-in block 311 is provided with a ring groove 312 along the circumferential direction thereof. A through groove 322 is formed in the second connecting piece 320, a notch of the through groove 322 is square, and the through groove 322 is communicated with the clamping groove 321. A locking rod 323 is arranged in the through groove 322, and the locking rod 323 is connected with the through groove 322 in a sliding mode along the length direction of the locking rod 323. After joint piece 311 pegs graft together with joint groove 321, slip locking pole 323, locking pole 323 takes place relative slip with leading to groove 322, then makes the one end motion of locking pole 323 to the annular groove 312 in to make locking pole 323 play spacing effect to joint piece 311.
Referring to fig. 1 and 2, in order to increase stability when the first link plate 310 and the scale 100 slide relatively, first guide plates 313 are fixedly connected to both sides of the first link plate 310, and the first guide plates 313 are disposed parallel to the scale 100. The two first guide pieces 313 are 7-shaped in cross section perpendicular to the length direction of the scale 100, and the two first guide pieces 313 and the first connecting piece 310 together form a C-shaped space. The scale 100 is arranged in a C-shaped space formed by the first connecting piece 310 and the two first guide pieces 313, and when the scale 100 slides relative to the first connecting piece 310, the two first guide pieces 313 guide the movement of the scale 100, so as to ensure the stability of the scale 100 during movement.
Referring to fig. 2 and 3, in order to reduce the separation of the scale 100 from the first connection piece 310 when the scale 100 is slid, a first waist-shaped groove 110 is formed on a side surface of the scale 100 facing the first connection piece 310, and a longitudinal direction of the first waist-shaped groove 110 is parallel to a longitudinal direction of the scale 100. A first limiting column 314 is vertically and fixedly connected to a side surface of the first connecting plate 310 facing the scale 100, and the first limiting column 314 is disposed in the first waist-shaped groove 110. When the first connecting piece 310 is located at the end of the scale 100, the first limiting column 314 is abutted against the end groove wall of the first waist-shaped groove 110, so that the first limiting column 314 and the first waist-shaped groove 110 limit the first connecting piece 310 and the scale 100, and the separation of the scale 100 from the first connecting piece 310 is reduced.
Referring to fig. 2 and 3, in order to increase stability when the vernier scale 200 and the second connection piece 320 slide relatively, a second guide piece 324 is fixedly connected to both sides of the second connection piece 320, and the second guide piece 324 is arranged parallel to the vernier scale 200. The cross section of each of the two second guide pieces 324 perpendicular to the length direction of the vernier scale 200 is 7-shaped, and the two second guide pieces 324 and the second connecting piece 320 form a C-shaped space together. The vernier scale 200 is arranged in a C-shaped space formed by the second connecting piece 320 and the two second guide pieces 324, and when the vernier scale 200 slides relative to the second connecting piece 320, the two second guide pieces 324 guide the movement of the vernier scale 200, so that the stability of the vernier scale 200 during movement is ensured.
Referring to fig. 2 and 3, in order to reduce the separation of the vernier scale 200 from the second connection piece 320 when the vernier scale 200 is slid, the second waist groove 210 is opened on the side surface of the vernier scale 200 facing the second connection piece 320, and the longitudinal direction of the second waist groove 210 is parallel to the longitudinal direction of the vernier scale 200. A second limiting column 325 is vertically and fixedly connected to the side surface of the second connecting piece 320 facing the vernier scale 200, and the second limiting column 325 is arranged in the second waist-shaped groove 210. When the second connecting piece 320 is located at the end of the vernier scale 200, the second limiting column 325 is abutted against the end groove wall of the second waist-shaped groove 210, so that the second limiting column 325 and the second waist-shaped groove 210 play a limiting role in the second connecting piece 320 and the vernier scale 200, and the occurrence of the situation that the vernier scale 200 is separated from the second connecting piece 320 is reduced.
The implementation principle of the high-precision welding seam detection ruler in the embodiment of the application is as follows: when the detection ruler is used for detecting the welding seam, the bottom of the graduated scale 100 is abutted to metal, the vernier scale 200 is slid, and the vernier scale 200 drives the second connecting piece 320. The first link plate 310 and the scale 100 are then relatively moved, while the two first guide pieces 313 guide the movement of the first link plate 310. Sliding the vernier 200 again requires relative movement between the vernier 200 and the second connecting piece 320, so that one end of the vernier 200 is aligned with the top of the weld. When the vernier scale 200 and the second connecting piece 320 move relatively, the second guide piece 324 guides the movement of the vernier scale 200, so that the vernier scale 200 and the scale 100 are always kept in a vertical state, and the detection accuracy of the detection scale is improved.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A high-precision welding seam detection ruler comprises a graduated scale (100) and a vernier (200), wherein the vernier (200) and the graduated scale (100) are arranged vertically, the vernier (200) is in sliding connection with the graduated scale (100) along the length direction of the vernier (200), and the graduated scale (100) is in sliding connection with the vernier scale (200) along the length direction of the vernier (100); the method is characterized in that: be provided with connecting piece (300) between vernier scale (200) and scale (100), connecting piece (300) are used for connecting vernier scale (200) and scale (100) and guide the motion of vernier scale (200) and scale (100).
2. The high-precision weld joint detection ruler according to claim 1, characterized in that: the connecting piece (300) comprises a first connecting piece (310) and a second connecting piece (320), the first connecting piece (310) and the second connecting piece (320) are arranged in parallel, the first connecting piece (310) and the second connecting piece (320) are connected in an inserted mode, the first connecting piece (310) is connected with the graduated scale (100) in a sliding mode, and the sliding direction of the first connecting piece (310) is the length direction of the graduated scale (100); the second connecting piece (320) is connected with the vernier scale (200) in a sliding mode, and the sliding direction of the second connecting piece is the length direction of the vernier scale (200).
3. The high-precision weld joint detection ruler according to claim 2, characterized in that: first connection piece (310) are provided with joint piece (311) on the side towards second connection piece (320), joint piece (311) are on a parallel with first connection piece (310) the cross-section be the square, second connection piece (320) offer on the side towards first connection piece (310) with joint piece (311) complex joint groove (321), joint piece (311) are pegged graft with joint groove (321).
4. The high-precision weld joint detection ruler according to claim 3, characterized in that: annular groove (312) have been seted up along its circumference in joint piece (311), logical groove (322) have been seted up on second connection piece (320), it sets up with joint groove (321) intercommunication to lead to groove (322), be provided with locking pole (323) in leading to groove (322), the one end of locking pole (323) is inserted in annular groove (312).
5. The high-precision weld joint detection ruler according to claim 2, characterized in that: the first connecting piece (310) is provided with two first guide pieces (313), the two first guide pieces (313) are arranged in parallel to the graduated scale (100), one first guide piece (313) is arranged on one side of the graduated scale (100), and the other first guide piece (313) is arranged on the other side of the graduated scale (100).
6. The high-precision weld joint detection ruler according to claim 2, characterized in that: the second connecting piece (320) is provided with two second guide pieces (324), the two second guide pieces (324) are arranged in parallel to the vernier (200), one second guide piece (324) is arranged on one side of the vernier (200), and the other second guide piece (324) is arranged on the other side of the vernier (200).
7. The high-precision weld joint detection ruler according to claim 2, characterized in that: first waist type groove (110) have been seted up on scale (100) towards the side of first connecting piece (310), the length direction of first waist type groove (110) sets up in a parallel with the length direction of scale (100), first connecting piece (310) is provided with first spacing post (314) on the side towards scale (100), the length direction and first waist type groove (110) sliding connection of scale (100) are followed in first spacing post (314).
8. The high-precision weld joint detection ruler according to claim 2, characterized in that: second waist type groove (210) have been seted up on the side of second connection piece (320) orientation vernier scale (200), the length direction of second waist type groove (210) sets up in a parallel with the length direction of vernier scale (200), be provided with spacing post of second (325) on the side of second connection piece (320) orientation vernier scale (200), the length direction and the second waist type groove (210) sliding connection of vernier scale (200) are followed to spacing post of second (325).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023343155.5U CN213812028U (en) | 2020-12-31 | 2020-12-31 | High-precision weld joint detection ruler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023343155.5U CN213812028U (en) | 2020-12-31 | 2020-12-31 | High-precision weld joint detection ruler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213812028U true CN213812028U (en) | 2021-07-27 |
Family
ID=76949040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023343155.5U Expired - Fee Related CN213812028U (en) | 2020-12-31 | 2020-12-31 | High-precision weld joint detection ruler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213812028U (en) |
-
2020
- 2020-12-31 CN CN202023343155.5U patent/CN213812028U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203843832U (en) | Straight rule with holes | |
| CN212721318U (en) | Pressure vessel edge angle and misalignment measuring device | |
| CN201892510U (en) | Inspection ruler for longitudinally welded joints of casings | |
| CN213812028U (en) | High-precision weld joint detection ruler | |
| CN210293082U (en) | Device for detecting circumferential edge angle of inner side of cylinder | |
| CN210862591U (en) | Thread detection device for bamboo joint pipe | |
| CN218443651U (en) | Steel construction right angle weld detects chi | |
| CN208833585U (en) | A kind of centering tooling for Charpy-type test | |
| CN211262101U (en) | Tool for measuring offset angle of inclined eccentric hole | |
| CN213599976U (en) | Caliper for detecting overall dimension of component | |
| CN204757868U (en) | But measuring tool of simultaneous measurement steel pipe welded seam reinforcement and weld width | |
| CN201903310U (en) | Thread pitch detector of lead screw | |
| CN214010153U (en) | Supervision steel structure weld quality detection device | |
| CN208860258U (en) | A kind of weld seam ruler | |
| CN110470190B (en) | Dovetail double-R angle edge length measuring scale and measuring method | |
| CN2079281U (en) | Multi-function welding seam edges and mal postion checking rule | |
| CN210293187U (en) | Barrel inboard ring direction edge angle detection device based on laser rangefinder | |
| CN220018408U (en) | Gap measuring device | |
| CN202432966U (en) | Outer diameter measurement fixture device for arc groove | |
| CN206930248U (en) | Long tubing parts groove is away from measurement apparatus | |
| CN217032305U (en) | Measuring sample plate for switch gap | |
| CN206683564U (en) | A kind of welding inspection ruler for pipeline groove | |
| CN211824229U (en) | Welding quality detection device | |
| CN215338098U (en) | Welding seam inspection ruler | |
| CN215114272U (en) | Multifunctional welding seam detection ruler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210727 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |