CN106195256A - A kind of gearshift - Google Patents
A kind of gearshift Download PDFInfo
- Publication number
- CN106195256A CN106195256A CN201610795181.0A CN201610795181A CN106195256A CN 106195256 A CN106195256 A CN 106195256A CN 201610795181 A CN201610795181 A CN 201610795181A CN 106195256 A CN106195256 A CN 106195256A
- Authority
- CN
- China
- Prior art keywords
- gearshift
- rotating shaft
- roll bearing
- taper roll
- driven gear
- 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
- 238000007789 sealing Methods 0.000 claims description 29
- 239000000463 material Substances 0.000 claims description 25
- 210000004907 gland Anatomy 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 5
- 239000010962 carbon steel Substances 0.000 claims description 5
- 229910001018 Cast iron Inorganic materials 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 9
- 240000008042 Zea mays Species 0.000 abstract description 5
- 235000002017 Zea mays subsp mays Nutrition 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 5
- 235000016383 Zea mays subsp huehuetenangensis Nutrition 0.000 abstract description 4
- 235000009973 maize Nutrition 0.000 abstract description 4
- 238000003306 harvesting Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000001360 synchronised effect Effects 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 208000031481 Pathologic Constriction Diseases 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 210000001138 tear Anatomy 0.000 description 2
- 210000001215 vagina Anatomy 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed- or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
- F16H59/0213—Selector apparatus with sealing means, e.g. against entry of dust
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H2063/3093—Final output elements, i.e. the final elements to establish gear ratio, e.g. coupling sleeves or other means establishing coupling to shaft
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention belongs to maize harvesting machine field of mechanical technique, particularly relate to a kind of gearshift.The technical problem to be solved in the present invention be to provide a kind of be easy to put into gear, simple in construction, easily operated gearshift.In order to solve above-mentioned technical problem, the invention provides such a gearshift, include housing, the first taper roll bearing, the second taper roll bearing, the first rotating shaft, bonnet, high-grade driven gear, tooth hub sleeve, low-grade driven gear etc.；In housing, bottom is respectively provided on two sides with the first taper roll bearing and the second taper roll bearing, is provided with the first rotating shaft between the first taper roll bearing and the second taper roll bearing, and the housing near the first taper roll bearing is provided with bonnet.Invention achieves be easy to put into gear, simple in construction, easily operated effect, the present invention designs advantages of simple, stable performance, good operation performance, and gearshift uses top cap type, is isolated from the outside by parts.
Description
Technical field
The invention belongs to maize harvesting machine field of mechanical technique, particularly relate to a kind of gearshift.
Background technology
In recent years, China's maize sown area is stable at about 400,000,000 mu, accounts for the 17% of the whole nation total cultivated area of crops
Above, occupying the second of domestic three big corn, area is only second to the U.S., occupies second place of the world.Relate to arable land, Nong Minduo, impact
The biggest.China's maize harvesting mechanization level but ratio is relatively low at present.
Existing gearshift exist put into gear loaded down with trivial details, structure is complicated, be difficult to operate shortcoming really, therefore need badly research and development one
Be easy to put into gear, simple in construction, easily operated gearshift.
Summary of the invention
(1) to solve the technical problem that
The present invention in order to overcome existing gearshift exist put into gear loaded down with trivial details, structure is complicated, the most easy-operating shortcoming, this
Bright to solve the technical problem that be to provide a kind of be easy to put into gear, simple in construction, easily operated gearshift.
(2) technical scheme
In order to solve above-mentioned technical problem, the invention provides such a gearshift, include housing, the first circular cone
Roller bearing, the second taper roll bearing, the first rotating shaft, bonnet, high-grade driven gear, tooth hub sleeve, low-grade driven gear, second
Rotating shaft, shift fork, gearshift list rocking arm, top cover and gland, in housing, bottom is respectively provided on two sides with the first taper roll bearing and second
Taper roll bearing, is provided with the first rotating shaft between the first taper roll bearing and the second taper roll bearing, near the first circle
The housing of taper roller bearing is provided with bonnet, and the first rotating shaft is provided with high-grade driven gear and low-grade driven gear, high-grade passive
The first rotating shaft between gear and low-grade driven gear is provided with tooth hub sleeve, in housing on be bolted with in gland, gland and housing
Second rotating shaft is installed on sidewall, the second rotating shaft is provided with the single rocking arm of gearshift, bottom the single rocking arm of gearshift, is provided with shift fork, shift fork and tooth
Hub sleeve is connected, top cover be removably mounted case top.
Preferably, also including securing member, top cover is installed on casing by securing member, and securing member is bolt, bolt spiral shell
Stricture of vagina tooth is away from for 0.7mm, and the largest outside diameter of bolt is 3.98mm, the minimum 3.83mm of external diameter of bolt.Bolt material is cast iron.
Preferably, also including sealing ring, gland is provided with sealing ring, and sealing ring is circular, and seal diameter is
8mm, sealing ring thickness is 3.5mm, and the material of sealing ring is FLS fluorosioloxane rubber, generally uses temperature range and is-50～200 DEG C.
Preferably, also include needle roller, inside low-grade driven gear and high-grade driven gear, be mounted on needle roller, needle roller in
Cylindric, the material of needle roller is Q235 steel.
Preferably, also including pad, be provided with pad on the right side of the second taper roll bearing, the material of pad is carbon steel, pad
The cross section of sheet is ring-shaped, the thickness 3mm of pad.
Preferably, the first rotating shaft is cylindrical, and the first shaft diameter is 15mm, and the first shaft length is 35mm, first turn
Axial wood matter is No. 45 steel, and the first rotating shaft is installed with the first taper roll bearing and the second taper roll bearing interference.
Operation principle: when using this device to change high tap position into, manually by the single rocking arm of gearshift and shift fork drive tooth hub sleeve to
High-grade driven gear direction is moved, and when tooth hub sleeve engages with high-grade driven gear, the power now inputted will be by high-grade quilt
Moving gear drives the first rotating shaft to realize synchronous axial system, then is transferred out, when needs change into low by the dispensing of other parts
During gear, manually tooth hub sleeve is driven to move, when tooth hub sleeve is with low to low-grade driven gear direction by the single rocking arm of gearshift and shift fork
During shelves driven gear engagement, the power now inputted will drive the first rotating shaft to realize synchronous axial system by low-grade driven gear, then
Transferred out by the dispensing of other parts.This device changes block selecting and connects layout conveniently, uses full engaging cover type to shift gears, changes
During gear flexibly, reliably.Gearshift uses top cap type, is isolated from the outside by parts, dust and other foreign material access arrangements, with
Time also be able to prevent mechanical wounding, promote production safety, simultaneously work as facilitating maintenance effect.
Because also including securing member, top cover is installed on casing by securing member, and securing member is bolt, bolt thread tooth
Away from for 0.7mm, the largest outside diameter of bolt is 3.98mm, the minimum 3.83mm of external diameter of bolt.Bolt material is cast iron, uses spiral shell
Bolt and pad fastening effect are good, easy accessibility.
Because also including sealing ring, gland is provided with sealing ring, and sealing ring is circular, and seal diameter is 8mm, close
Seal thickness is 3.5mm, and the material of sealing ring is FLS fluorosioloxane rubber, generally uses temperature range and is-50～200 DEG C, seals effect
The best, play a role.
Because also including needle roller, being mounted on needle roller inside low-grade driven gear and high-grade driven gear, needle roller is circle
Column, the material of needle roller is Q235 steel, equipped with needle roller, weares and teares little, it is possible to ensure serviceability for a long time.
Because also including pad, being provided with pad on the right side of the second taper roll bearing, the material of pad is carbon steel, pad
Cross section is ring-shaped, the thickness 3mm of pad, for the load thread of distribution, reduces the vibrations of device.
(3) beneficial effect
Invention achieves be easy to put into gear, simple in construction, easily operated effect, the present invention designs advantages of simple, performance
Stable, good operation performance, gearshift uses top cap type, is isolated from the outside by parts, dust and other foreign material access arrangements,
It also is able to prevent mechanical wounding simultaneously, promotes production safety, simultaneously work as facilitating maintenance effect.
Accompanying drawing explanation
Fig. 1 is the first main TV structure schematic diagram of the present invention.
Fig. 2 is that the present invention shifts gears the left view structural representation of single rocking arm.
Fig. 3 is the second main TV structure schematic diagram of the present invention.
Fig. 4 is the third main TV structure schematic diagram of the present invention.
Fig. 5 is the 4th kind of main TV structure schematic diagram of the present invention.
Fig. 6 is the 5th kind of main TV structure schematic diagram of the present invention.
Being labeled as in accompanying drawing: 1-housing, 2-the first taper roll bearing, 3-the second taper roll bearing, 4-first turn
Axle, 5-bonnet, 6-top grade driven gear, 7-tooth hub sleeve, 8-low grade driven gear, 9-the second rotating shaft, 10-shift fork, 11-shifts gears single
Rocking arm, 12-top cover, 13-gland, 14-securing member, 15-sealing ring, 16-needle roller, 17-pad.
Detailed description of the invention
The present invention is further illustrated with embodiment below in conjunction with the accompanying drawings.
Embodiment 1
A kind of gearshift, as shown in figures 1 to 6, includes housing the 1, first taper roll bearing the 2, second taper roller axle
Hold the 3, first rotating shaft 4, bonnet 5, high-grade driven gear 6, tooth hub sleeve 7, low-grade driven gear the 8, second rotating shaft 9, shift fork 10, gearshift
Single rocking arm 11, top cover 12 and gland 13, in housing 1, bottom is respectively provided on two sides with the first taper roll bearing 2 and the rolling of the second circular cone
Sub-bearing 3, is provided with the first rotating shaft 4 between the first taper roll bearing 2 and the second taper roll bearing 3, near the first circular cone
The housing 1 of roller bearing 2 is provided with bonnet 5, and the first rotating shaft 4 is provided with high-grade driven gear 6 and low-grade driven gear 8, high-grade
The first rotating shaft 4 between driven gear 6 and low-grade driven gear 8 is provided with tooth hub sleeve 7, in housing 1 on be bolted with gland 13, pressure
On lid 13 and housing 1 medial wall, the second rotating shaft 9 is installed, the second rotating shaft 9 is provided with the single rocking arm 11 of gearshift, gearshift single rocking arm 11 end
Portion is provided with shift fork 10, and shift fork 10 is connected with tooth hub sleeve 7, top cover 12 be removably mounted housing 1 top.
Also including securing member 14, top cover 12 is installed on casing by securing member 14, and securing member 14 is bolt, bolt spiral shell
Stricture of vagina tooth is away from for 0.7mm, and the largest outside diameter of bolt is 3.98mm, the minimum 3.83mm of external diameter of bolt.Bolt material is cast iron.
Also including sealing ring 15, gland 13 is provided with sealing ring 15, and sealing ring 15 is in circular, and sealing ring 15 is a diameter of
8mm, sealing ring 15 thickness is 3.5mm, and the material of sealing ring 15 is FLS fluorosioloxane rubber, generally use temperature range for-50～
200℃。
Also include needle roller 16, low-grade driven gear 8 and high-grade driven gear 6 inside and be mounted on needle roller 16, needle roller 16
Cylindrical, the material of needle roller 16 is Q235 steel.
Also including pad 17, be provided with pad 17 on the right side of the second taper roll bearing 3, the material of pad 17 is carbon steel, pad
The cross section of sheet 17 is ring-shaped, the thickness 3mm of pad 17.
First rotating shaft 4 is cylindrical, the first a diameter of 15mm of rotating shaft 4, the first a length of 35mm of rotating shaft 4, the first rotating shaft 4 material
Matter is No. 45 steel, and the first rotating shaft 4 and the first taper roll bearing 2 and the second taper roll bearing 3 interference are installed.
Operation principle: when using this device to change high tap position into, manually drives tooth hub by the single rocking arm 11 of gearshift and shift fork 10
Set 7 moves to high-grade driven gear 6 direction, and when tooth hub sleeve 7 engages with high-grade driven gear 6, the power now inputted will be logical
Crossing high-grade driven gear 6 drives the first rotating shaft 4 to realize synchronous axial system, then is transferred out by the dispensing of other parts, when
When needing to change into low-grade location, manually tooth hub sleeve 7 is driven to move to low-grade driven gear 8 direction by the single rocking arm 11 of gearshift and shift fork 10
Dynamic, when tooth hub sleeve 7 engages with low-grade driven gear 8, the power now inputted will drive first turn by low-grade driven gear 8
Axle 4 realizes synchronous axial system, then is transferred out by the dispensing of other parts.This device changes block selecting and connects layout conveniently, makes
Shift gears with full engaging cover type, during gearshift flexibly, reliably.Gearshift uses top cover 12 formula, is isolated from the outside by parts, dust
With other foreign material access arrangements, it also is able to prevent mechanical wounding simultaneously, promotes production safety, simultaneously work as facilitating maintenance effect.
Because also including securing member 14, top cover 12 is installed on casing by securing member 14, and securing member 14 is bolt, spiral shell
Bolt ridge is away from for 0.7mm, and the largest outside diameter of bolt is 3.98mm, the minimum 3.83mm of external diameter of bolt.Bolt material is casting
Ferrum, uses bolt and pad 17 fastening effect good, easy accessibility.
Because also including sealing ring 15, gland 13 is provided with sealing ring 15, and sealing ring 15 is in circular, and sealing ring 15 is straight
Footpath is 8mm, and sealing ring 15 thickness is 3.5mm, and the material of sealing ring 15 is FLS fluorosioloxane rubber, and generally using temperature range is-50
～200 DEG C, good sealing effect, play a role.
Because also including needle roller 16, low-grade driven gear 8 and high-grade driven gear 6 inside are mounted on needle roller 16, rolling
Pin 16 is cylindrical, and the material of needle roller 16 is Q235 steel, equipped with needle roller 16, weares and teares little, it is possible to ensure serviceability for a long time.
Because also including pad 17, being provided with pad 17 on the right side of the second taper roll bearing 3, the material of pad 17 is carbon
Steel, the cross section of pad 17 is ring-shaped, the thickness 3mm of pad 17, for the load thread of distribution, reduces the vibrations of device.
Embodiment described above only have expressed the preferred embodiment of the present invention, and it describes more concrete and detailed, but also
Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that, for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, it is also possible to making some deformation, improve and substitute, these broadly fall into this
Bright protection domain.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (6)
1. a gearshift, it is characterised in that include housing (1), the first taper roll bearing (2), the second taper roller
Bearing (3), the first rotating shaft (4), bonnet (5), high-grade driven gear (6), tooth hub sleeve (7), low-grade driven gear (8), second turn
Axle (9), shift fork (10), the single rocking arm of gearshift (11), top cover (12) and gland (13), housing (1) interior bottom is respectively provided on two sides with the
One taper roll bearing (2) and the second taper roll bearing (3), the first taper roll bearing (2) and the second taper roll bearing
(3) the first rotating shaft (4) is installed between, is provided with bonnet (5) near the housing (1) of the first taper roll bearing (2), first turn
Axle (4) is provided with high-grade driven gear (6) and low-grade driven gear (8), high-grade driven gear (6) and low-grade driven gear (8)
Between the first rotating shaft (4) be provided with tooth hub sleeve (7), in housing (1) on be bolted with gland (13), gland (13) and housing (1)
Second rotating shaft (9) is installed on medial wall, the second rotating shaft (9) is provided with the single rocking arm (11) of gearshift, gearshift single rocking arm (11) bottom
Being provided with shift fork (10), shift fork (10) is connected with tooth hub sleeve (7), and top cover (12) pushes up with being removably mounted housing (1)
Portion.
A kind of gearshift the most according to claim 1, it is characterised in that also include securing member (14), top cover (12)
Being installed on casing by securing member (14), securing member (14) is bolt, and bolt thread tooth is away from for 0.7mm, and the external diameter of bolt is
Greatly 3.98mm, the minimum 3.83mm of external diameter of bolt.Bolt material is cast iron.
A kind of gearshift the most according to claim 1, it is characterised in that also include sealing ring (15), gland (13)
Being provided with sealing ring (15), sealing ring (15) is in circular, and sealing ring (15) a diameter of 8mm, sealing ring (15) thickness is
3.5mm, the material of sealing ring (15) is FLS fluorosioloxane rubber, generally uses temperature range and is-50～200 DEG C.
A kind of gearshift the most according to claim 1, it is characterised in that also include needle roller (16), low-grade passive tooth
Wheel (8) and high-grade driven gear (6) inside are mounted on needle roller (16), and needle roller (16) is cylindrical, and the material of needle roller (16) is
Q235 steel.
A kind of gearshift the most according to claim 1, it is characterised in that also include pad (17), the second circular cone rolling
Sub-bearing (3) right side is provided with pad (17), and the material of pad (17) is carbon steel, and the cross section of pad (17) is ring-shaped, pad
(17) thickness 3mm.
A kind of gearshift the most according to claim 1, it is characterised in that the first rotating shaft (4) is cylindrical, the first rotating shaft
(4) a diameter of 15mm, the first rotating shaft (4) a length of 35mm, the first rotating shaft (4) material is No. 45 steel, the first rotating shaft (4) and first
Taper roll bearing (2) and the second taper roll bearing (3) interference are installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610795181.0A CN106195256A (en) | 2016-08-31 | 2016-08-31 | A kind of gearshift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610795181.0A CN106195256A (en) | 2016-08-31 | 2016-08-31 | A kind of gearshift |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106195256A true CN106195256A (en) | 2016-12-07 |
Family
ID=58086359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610795181.0A Pending CN106195256A (en) | 2016-08-31 | 2016-08-31 | A kind of gearshift |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106195256A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108413023A (en) * | 2018-05-14 | 2018-08-17 | 安徽合力股份有限公司 | A kind of adjustment mechanism for fork truck shift lever axial gap |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201184396Y (en) * | 2008-02-15 | 2009-01-21 | 金坛市压力精密铸造厂 | Rotary tillage gearbox of miniature rotary tillage and seed covering dual-purpose machine |
| CN201679916U (en) * | 2010-05-07 | 2010-12-22 | 中国第一汽车集团公司 | Two-gear gearbox assembly for electric bus |
| CN202338605U (en) * | 2011-12-07 | 2012-07-18 | 唐山通力齿轮有限公司 | Speed changer for pure electric vehicle |
| CN202579846U (en) * | 2012-05-24 | 2012-12-05 | 姜华 | Full electric vehicle two-gear driver |
| CN203146719U (en) * | 2013-01-29 | 2013-08-21 | 温岭市明华齿轮有限公司 | Mechanical drive axle box transmission system |
-
2016
- 2016-08-31 CN CN201610795181.0A patent/CN106195256A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201184396Y (en) * | 2008-02-15 | 2009-01-21 | 金坛市压力精密铸造厂 | Rotary tillage gearbox of miniature rotary tillage and seed covering dual-purpose machine |
| CN201679916U (en) * | 2010-05-07 | 2010-12-22 | 中国第一汽车集团公司 | Two-gear gearbox assembly for electric bus |
| CN202338605U (en) * | 2011-12-07 | 2012-07-18 | 唐山通力齿轮有限公司 | Speed changer for pure electric vehicle |
| CN202579846U (en) * | 2012-05-24 | 2012-12-05 | 姜华 | Full electric vehicle two-gear driver |
| CN203146719U (en) * | 2013-01-29 | 2013-08-21 | 温岭市明华齿轮有限公司 | Mechanical drive axle box transmission system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108413023A (en) * | 2018-05-14 | 2018-08-17 | 安徽合力股份有限公司 | A kind of adjustment mechanism for fork truck shift lever axial gap |
| CN108413023B (en) * | 2018-05-14 | 2024-06-18 | 安徽合力股份有限公司 | Adjusting mechanism for axial gap of forklift gear shift lever |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161207 |
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| RJ01 | Rejection of invention patent application after publication |