CN111862726A - Teaching device for computer software programming teaching - Google Patents
Teaching device for computer software programming teaching Download PDFInfo
- Publication number
- CN111862726A CN111862726A CN201910341919.XA CN201910341919A CN111862726A CN 111862726 A CN111862726 A CN 111862726A CN 201910341919 A CN201910341919 A CN 201910341919A CN 111862726 A CN111862726 A CN 111862726A
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- screw rod
- teaching
- shell
- computer software
- 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
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B19/00—Teaching not covered by other main groups of this subclass
- G09B19/0053—Computers, e.g. programming
Landscapes
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Computer Hardware Design (AREA)
- Entrepreneurship & Innovation (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses a teaching device for computer software programming teaching, which comprises a shell, wherein through holes are formed in two sides of the shell, which are close to the bottom, and a first screw rod is rotated in a limiting mode through the through holes, a first thread sleeve is connected to the surface of the first screw rod in a threaded mode, a sliding block is fixedly connected to the bottom of the first thread sleeve, a limiting groove for the sliding block to slide left and right is formed in the bottom of the inner wall of the shell, an inclined surface block is fixedly connected to the top of the sliding block, a rectangular rod is connected to the inclined surface of the inclined surface block in a sliding mode, a rectangular hole matched with the rectangular rod is formed in the upper surface of the shell, a second screw rod penetrates through the rectangular hole in the top of the rectangular rod and is fixedly connected to the. According to the invention, through the cooperation of the structures, the problems that the lifting and steering of the traditional device are still inconvenient, the time consumption for adjustment is long and the teaching efficiency is reduced in the actual use process are solved.
Description
Technical Field
The invention relates to the technical field of teaching devices, in particular to a teaching device for computer software programming teaching.
Background
The computer is commonly called computer, and is a modern electronic computing machine for high-speed computation, which can perform numerical computation, logic computation and memory function. The intelligent electronic device is a modern intelligent electronic device which can operate according to a program and automatically process mass data at a high speed; the process of editing programs to be executed by a computer is called programming that a plurality of software can be programmed by representative computer languages such as Java, BASICC, C + + and the like. In computer software programming teaching in-process, often need rotate teaching device, in order to reach better viewing effect, and among the current teaching device, fix on the holding surface mostly, be difficult to go up and down and turn to the regulation, for this reason people propose a teaching device for software programming teaching, as the teaching device for computer software programming teaching that chinese patent CN107680446A discloses, the on-line screen storage device comprises a base, the top both sides of base all are fixed with the telescopic link, the supporting seat is installed at the top of two telescopic links, the top intermediate position of supporting seat is equipped with the mounting groove, install driving motor through the bolt on one side inner wall of mounting groove, threaded sleeve threaded connection has the threaded rod in the threaded rod, the top thread bush of threaded rod has the movable block, the both sides side of movable block all articulates there is the connecting rod. The teaching demonstration board is simple in structure and reasonable in design, teaching demonstration is convenient to carry out, meanwhile, different angles are convenient to show by changing the angles of the two demonstration boards, the demonstration range is enlarged, the operation is simple, the use is convenient, and the popularization and the application are easy; but in the in-service use process, the lifting and the steering of the traditional device are still inconvenient, the adjustment is time-consuming and long, and the teaching efficiency is reduced.
Disclosure of Invention
The invention aims to provide a teaching device for computer software programming teaching, which improves the traditional device and solves the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a teaching device is used in computer software programming teaching, includes the casing, the both sides that are close to the bottom on the casing have all been seted up the through-hole and have screw rod one through the spacing rotation of through-hole, the surperficial threaded connection of screw rod one has thread bush one, the bottom fixedly connected with slider of thread bush one, the spacing groove that supplies slider horizontal slip is seted up to shells inner wall's bottom.
The top of the sliding block is fixedly connected with an inclined block, the inclined surface of the inclined block is connected with a rectangular rod in a sliding manner, the upper surface of the shell is provided with a rectangular hole matched with the rectangular rod, the top of the rectangular rod penetrates through the rectangular hole and is fixedly connected with a second screw rod, the surface of the second screw rod is connected with a second thread sleeve in a threaded manner, the upper surface of the second thread sleeve is movably connected with a supporting plate, the upper surface of the supporting plate is fixedly connected with a toothed plate, the top of the second screw rod penetrates through the upper surface of the supporting plate and is fixedly connected with a fixed plate, the upper surface of the fixed plate is fixedly connected with two symmetrical side plates, the side surfaces of the two side plates close to the top are provided with through holes and are rotatably limited by the through holes, opposite ends of the two rotating shafts are fixedly connected with display panels, the top of the toothed plate penetrates through the fixing plate, and the front side of the fixing plate is meshed with teeth on the gear.
Preferably, the bottom of the shell is fixedly connected with a support leg, and the bottom of the support leg is fixedly connected with a universal wheel.
Preferably, both ends of the first screw rod are fixedly connected with knobs, and anti-skid grains are formed in the surfaces of the knobs.
Preferably, the surfaces of the first screw rod close to the two ends are fixedly connected with limiting rings, and the opposite sides of the two limiting rings are rotatably connected with the two sides of the shell.
Preferably, the left end of the inclined plane block is fixedly connected with a transition stop block, and the upper surface of the transition stop block can be in sliding connection with the bottom of the rectangular rod.
Preferably, the bottom of the rectangular rod is an arc-shaped surface, and the rectangular rod is connected with the surfaces of the inclined surface block and the transition stop block in a sliding mode through the arc-shaped surface.
Preferably, the number of the toothed plates is two, and the two toothed plates are symmetrically arranged with respect to a vertical center line of the display panel.
Compared with the prior art, the invention has the following beneficial effects:
firstly, the whole device is fixedly supported through the shell; the first screw is driven to rotate manually, the first screw sleeve has the tendency of rotating along with the first screw under the matching of the first screw and the internal threads on the first screw sleeve, but the sliding block can only move left and right in the limiting groove, and after the first screw rotates in a limiting way on the shell, the first screw sleeve can drive the inclined plane block to move left and right in the shell; when the rectangular rod slides on the inclined plane of the inclined plane block, the rectangular rod can be quickly lifted along with the left and right movement of the inclined plane block, and the lifting of the rectangular rod drives the screw rod II and the fixed plate to lift, so that the lifting of the display panel is realized.
The second threaded sleeve can be lifted on the surface of the second threaded rod through the manual driving of the second threaded sleeve to rotate under the matching of the second threaded sleeve and the upper external threads of the second threaded rod, when the upper surface of the second threaded sleeve is contacted with the supporting plate and then continuously lifted, the supporting plate is driven to lift together, the toothed plate synchronously lifts, the second threaded sleeve is rotated reversely, the supporting plate and the toothed plate can be lowered, the forward and reverse rotation of the gear is realized through the lifting of the toothed plate, the forward and reverse rotation of the display panel is realized through the transmission of the rotating shaft, and the angle adjustment is realized.
By means of the cooperation of the structures, the problems that the lifting and steering of a traditional device are still inconvenient, the time consumption for adjustment is long, and the teaching efficiency is reduced in the actual use process are solved.
Drawings
FIG. 1 is a front cross-sectional view of the structure of the present invention.
In the figure: the device comprises a shell 1, a screw rod 2, a screw thread sleeve 3, a sliding block 4, a limiting groove 5, a slope block 6, a rectangular rod 7, a screw rod 8, a screw thread sleeve 9, a supporting plate 10, a toothed plate 11, a fixing plate 12, a side plate 13, a rotating shaft 14, a display panel 15, a gear 16, a supporting leg 17, a universal wheel 18, a knob 19, a limiting ring 20 and a transition baffle 21.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: a teaching device for computer software programming teaching comprises a shell 1, wherein the shell 1 is used for fixedly supporting the whole device, supporting legs 17 are fixedly connected to the bottom of the shell 1, universal wheels 18 are fixedly connected to the bottoms of the supporting legs 17, the whole device is more convenient to move through the arrangement of the universal wheels 18 and the supporting legs 17, through holes are formed in two sides, close to the bottom, of the shell 1, screw rods 2 are arranged in a limiting and rotating mode through the through holes, knobs 19 are fixedly connected to two ends of the screw rods 2, anti-skidding patterns are formed in the surfaces of the knobs 19, the screw rods 2 are convenient to drive and rotate through the arrangement of the knobs 19, the anti-skidding patterns are formed on the screw rods, so that the rotation is more labor-saving, limiting rings 20 are fixedly connected to the surfaces, close to the two ends, of the screw rods 2, opposite sides of the two limiting rings 20 are rotatably connected with two sides of the shell 1, stability when further improving screw rod 2 spacing rotation, screw rod 2's surperficial threaded connection has thread bush one 3, and thread bush one 3's bottom fixedly connected with slider 4, and the bottom of 1 inner wall of casing is seted up and is supplied slider 4 horizontal gliding spacing groove 5.
The top of the sliding block 4 is fixedly connected with an inclined plane block 6, the screw rod I2 is driven to rotate manually, the screw sleeve I3 has the tendency of rotating along with the screw rod I2 under the matching of the screw rod I3 and an internal thread, but the sliding block 4 can only move left and right in the limiting groove 5, after the screw rod I2 rotates on the shell 1 in a limiting way, the screw sleeve I3 can drive the inclined plane block 6 to move left and right in the shell 1, the left end of the inclined plane block 6 is fixedly connected with a transition stop block 21, the upper surface of the transition stop block 21 can be in sliding connection with the bottom of the rectangular rod 7, through the arrangement of the transition stop block 21, the situation that the sliding connection is difficult to establish again after the rectangular rod 7 is separated from the inclined plane block 6 is avoided, the whole device is more stable, the inclined plane of the inclined plane block 6 is in sliding connection with the rectangular rod 7, when the rectangular rod 7 slides on the inclined plane of, the fast lifting of the rectangular rod 7 can be realized, the lifting of the screw rod two 8 and the fixed plate 12 is driven by the lifting of the rectangular rod 7, the lifting of the display panel 15 is realized, the bottom of the rectangular rod 7 is an arc-shaped surface, the rectangular rod 7 is in sliding connection with the surfaces of the inclined plane block 6 and the transition baffle block 21 through the arc-shaped surface, the sliding between the rectangular rod 7 and the inclined plane block 6 and the transition baffle block 21 is smoother through the arrangement of the arc-shaped surface at the bottom, the upper surface of the shell 1 is provided with a rectangular hole matched with the rectangular rod 7, the top of the rectangular rod 7 passes through the rectangular hole and is fixedly connected with the screw rod two 8, the surface of the screw rod two 8 is in threaded connection with the thread sleeve two 9, the thread sleeve two 9 is driven by hand to rotate by the thread sleeve two 9, the thread sleeve two 9 can be lifted on the surface of the screw rod two 8 under the matching with the external thread on the, the upper surface of the supporting plate 10 is fixedly connected with two toothed plates 11, the number of the toothed plates 11 is two, the two toothed plates 11 are symmetrically arranged on the vertical central line of the display panel 15, the two toothed plates 11 are arranged to balance the stress of the two gears 16, so that the rotation of the display panel 15 is more stable, the top of the screw rod II 8 penetrates through the upper surface of the supporting plate 10 and is fixedly connected with a fixing plate 12, when the upper surface of the threaded sleeve II 9 is contacted with the supporting plate 10 and then continuously ascends, the supporting plate 10 is driven to ascend together, the toothed plates 11 ascend synchronously, the threaded sleeve II 9 is rotated reversely, the descending of the supporting plate 10 and the toothed plates 11 can be realized, the forward and reverse rotation of the gears 16 is realized through the ascending and descending of the toothed plates 11, the upper surface of the fixing plate 12 is fixedly connected with two symmetrical side plates 13, the side surfaces of the two side plates 13 close to the top are, through the transmission of pivot 14, realize the positive and negative rotation of display panel 15, the angle modulation that has realized, the relative end fixedly connected with display panel 15 of two pivots 14, the teaching content is shown for the student by display panel 15 and is watched, and the fixed surface who keeps away from display panel 15 one end in the pivot 14 is connected with gear 16, and fixed plate 12 is run through at the top of pinion rack 11, and the tooth meshing on the front side of fixed plate 12 and the gear 16.
The working principle is as follows: when the teaching device for computer software programming teaching is used, the screw rod I2 is driven to rotate manually, the screw sleeve I3 has the tendency of rotating along with the screw rod I2 under the matching of the screw rod I and the internal threads on the screw sleeve I3, but the sliding block 4 can only move left and right in the limiting groove 5, and after the screw rod I2 rotates in a limiting way on the shell 1, the screw sleeve I3 can drive the inclined plane block 6 to move left and right in the shell 1; when the rectangular rod 7 slides on the inclined surface of the inclined surface block 6, the rectangular rod 7 can be quickly lifted along with the left and right movement of the inclined surface block 6, and the lifting of the screw rod II 8 and the fixing plate 12 is driven by the lifting of the rectangular rod 7, so that the lifting of the display panel 15 is realized; the second threaded sleeve 9 is manually driven to rotate, the second threaded sleeve 9 can lift on the surface of the second threaded rod 8 under the matching of the second threaded sleeve 9 and the external threads on the second threaded rod 8, when the upper surface of the second threaded sleeve 9 is contacted with the support plate 10 and then continuously rises, the support plate 10 is driven to rise together, the toothed plate 11 rises synchronously, the second threaded sleeve 9 is rotated reversely, the support plate 10 and the toothed plate 11 can descend, forward and reverse rotation of the gear 16 is realized through the lifting of the toothed plate 11, forward and reverse rotation of the display panel 15 is realized through the transmission of the rotating shaft 14, and the angle adjustment is realized; through the cooperation use between the above-mentioned structure, solved in the in-service use process, traditional device's lift is still convenient inadequately with turning to, adjusts consuming time longer, has reduced the problem of teaching efficiency.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a teaching device is used in computer software programming teaching which characterized in that: the sliding block device comprises a shell (1), through holes are formed in two sides, close to the bottom, of the shell (1), a first screw rod (2) is limited and rotated through the through holes, a first threaded sleeve (3) is connected to the surface of the first screw rod (2) in a threaded mode, a sliding block (4) is fixedly connected to the bottom of the first threaded sleeve (3), and a limiting groove (5) for the sliding block (4) to slide left and right is formed in the bottom of the inner wall of the shell (1);
the top of the sliding block (4) is fixedly connected with an inclined plane block (6), the inclined plane of the inclined plane block (6) is connected with a rectangular rod (7) in a sliding manner, the upper surface of the shell (1) is provided with a rectangular hole matched with the rectangular rod (7), the top of the rectangular rod (7) penetrates through the rectangular hole and is fixedly connected with a second screw rod (8), the surface thread of the second screw rod (8) is connected with a second thread sleeve (9), the upper surface of the second thread sleeve (9) is movably connected with a supporting plate (10), the upper surface of the supporting plate (10) is fixedly connected with a toothed plate (11), the top of the second screw rod (8) penetrates through the upper surface of the supporting plate (10) and is fixedly connected with a fixed plate (12), the upper surface of the fixed plate (12) is fixedly connected with two symmetrical side plates (13), the side surfaces of the two side plates (13) close to the top are provided with through holes, and, the opposite ends fixedly connected with show panel (15) of two pivot (14), the surperficial fixedly connected with gear (16) of keeping away from show panel (15) one end on pivot (14), fixed plate (12) is run through at the top of pinion rack (11), the front side of fixed plate (12) and the tooth meshing on gear (16).
2. A teaching device for computer software programming teaching according to claim 1, wherein: the bottom of casing (1) fixedly connected with stabilizer blade (17), the bottom fixedly connected with universal wheel (18) of stabilizer blade (17).
3. A teaching device for computer software programming teaching according to claim 1, wherein: the two ends of the first screw rod (2) are fixedly connected with knobs (19), and anti-skid grains are formed in the surfaces of the knobs (19).
4. A teaching device for computer software programming teaching according to claim 1, wherein: the surface of the first screw rod (2) close to the two ends is fixedly connected with limiting rings (20), and the opposite sides of the two limiting rings (20) are rotatably connected with the two sides of the shell (1).
5. A teaching device for computer software programming teaching according to claim 1, wherein: the left end of the inclined plane block (6) is fixedly connected with a transition stop block (21), and the upper surface of the transition stop block (21) can be in sliding connection with the bottom of the rectangular rod (7).
6. A teaching device for computer software programming teaching according to claim 1, wherein: the bottom of the rectangular rod (7) is an arc-shaped surface, and the rectangular rod (7) is connected with the surfaces of the inclined plane block (6) and the transition stop block (21) in a sliding mode through the arc-shaped surface.
7. A teaching device for computer software programming teaching according to claim 1, wherein: the number of the toothed plates (11) is two, and the two toothed plates (11) are symmetrically arranged by a vertical central line of the display panel (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910341919.XA CN111862726A (en) | 2019-04-25 | 2019-04-25 | Teaching device for computer software programming teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910341919.XA CN111862726A (en) | 2019-04-25 | 2019-04-25 | Teaching device for computer software programming teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111862726A true CN111862726A (en) | 2020-10-30 |
Family
ID=72951590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910341919.XA Pending CN111862726A (en) | 2019-04-25 | 2019-04-25 | Teaching device for computer software programming teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111862726A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113696954A (en) * | 2021-07-29 | 2021-11-26 | 王强祖 | Heavy object perk handling device of construction engineering construction |
| CN117658254A (en) * | 2023-12-26 | 2024-03-08 | 哈尔滨悟山青水务科技有限公司 | Biological method handles mud filler device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206039889U (en) * | 2016-06-23 | 2017-03-22 | 袁荣珊 | Social work teaching simulator device |
| CN206907274U (en) * | 2017-04-21 | 2018-01-19 | 徐州机电技师学院 | A kind of device for being easy to Chinese language to read |
| CN207445533U (en) * | 2017-09-08 | 2018-06-05 | 宋同仁 | Rotary physical education training displaying device |
| CN108612977A (en) * | 2018-07-27 | 2018-10-02 | 吴止观 | A kind of computer display screen convenient for adjustable range |
| CN208025151U (en) * | 2018-03-09 | 2018-10-30 | 宁波市丽得乐照明科技有限公司 | A kind of LED light with defencive function |
| CN109003511A (en) * | 2018-09-20 | 2018-12-14 | 潘为红 | A kind of height-adjustable presentation board for English teaching |
| CN208670512U (en) * | 2018-07-12 | 2019-03-29 | 广州市惠鑫网络科技有限公司 | A kind of new teaching intelligent terminal |
| CN208781451U (en) * | 2018-04-11 | 2019-04-23 | 江西工程学院 | A kind of English teaching display board |
-
2019
- 2019-04-25 CN CN201910341919.XA patent/CN111862726A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206039889U (en) * | 2016-06-23 | 2017-03-22 | 袁荣珊 | Social work teaching simulator device |
| CN206907274U (en) * | 2017-04-21 | 2018-01-19 | 徐州机电技师学院 | A kind of device for being easy to Chinese language to read |
| CN207445533U (en) * | 2017-09-08 | 2018-06-05 | 宋同仁 | Rotary physical education training displaying device |
| CN208025151U (en) * | 2018-03-09 | 2018-10-30 | 宁波市丽得乐照明科技有限公司 | A kind of LED light with defencive function |
| CN208781451U (en) * | 2018-04-11 | 2019-04-23 | 江西工程学院 | A kind of English teaching display board |
| CN208670512U (en) * | 2018-07-12 | 2019-03-29 | 广州市惠鑫网络科技有限公司 | A kind of new teaching intelligent terminal |
| CN108612977A (en) * | 2018-07-27 | 2018-10-02 | 吴止观 | A kind of computer display screen convenient for adjustable range |
| CN109003511A (en) * | 2018-09-20 | 2018-12-14 | 潘为红 | A kind of height-adjustable presentation board for English teaching |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113696954A (en) * | 2021-07-29 | 2021-11-26 | 王强祖 | Heavy object perk handling device of construction engineering construction |
| CN117658254A (en) * | 2023-12-26 | 2024-03-08 | 哈尔滨悟山青水务科技有限公司 | Biological method handles mud filler device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208096544U (en) | A kind of show stand of liftable rotation | |
| CN205326624U (en) | Multifunctional pen container | |
| CN108294474A (en) | A kind of art teaching workbench | |
| CN111862726A (en) | Teaching device for computer software programming teaching | |
| CN206949864U (en) | A kind of lift construction costs workbench | |
| CN211040229U (en) | Position adjusting device of camera for product detection | |
| CN215764401U (en) | Installation base for online live broadcast education display screen | |
| CN211264591U (en) | Art teaching is with show type painting and calligraphy frame | |
| CN115251573A (en) | English teaching is with multimedia device convenient to accomodate based on computer | |
| CN112045644A (en) | Multifunctional workbench for industrial design | |
| CN211878803U (en) | Show rack for teaching instrument | |
| CN214213692U (en) | Simple lifting workbench | |
| CN211124411U (en) | Education training system | |
| CN212847568U (en) | Display device for visual transmission design | |
| CN209127967U (en) | A kind of small-sized assembled architecture lifting device | |
| CN215569275U (en) | Teaching instrument with lifting platform | |
| CN209879773U (en) | Teaching aid for sociology teaching | |
| CN219202553U (en) | Teaching circulation display device | |
| CN206060788U (en) | A kind of structure improved conference terminal | |
| CN216311110U (en) | Art design teaching equipment based on virtual reality | |
| CN206711499U (en) | A kind of education and instruction panel | |
| CN221235149U (en) | Lifting device for equipment maintenance | |
| CN212471416U (en) | Multifunctional workbench for industrial design | |
| CN210325099U (en) | Political and ideological propaganda education fence | |
| CN213457768U (en) | General microcontroller experiment platform |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201030 |
|
| RJ01 | Rejection of invention patent application after publication |