CN209473059U - Vibrating motor type blueberry seed harvester - Google Patents
Vibrating motor type blueberry seed harvester Download PDFInfo
- Publication number
- CN209473059U CN209473059U CN201822206884.2U CN201822206884U CN209473059U CN 209473059 U CN209473059 U CN 209473059U CN 201822206884 U CN201822206884 U CN 201822206884U CN 209473059 U CN209473059 U CN 209473059U
- Authority
- CN
- China
- Prior art keywords
- platform
- vibrating motor
- mounting platform
- picking
- seed harvester
- 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.)
- Active
Links
Landscapes
- Jigging Conveyors (AREA)
Abstract
The utility model provides a kind of vibrating motor type blueberry seed harvester, belongs to blueberry seed harvester technical field comprising: rack；Picking structure, including being vertically arranged connecting rod on the rack, being from top to bottom distributed in multilayer picking lever in connecting rod, connecting rod and rack are flexibly connected；Transmission mechanism, including upper mounting platform, vibrating motor, upper transmission platform, underdrive platform, the lower mounting platform being from top to bottom sequentially distributed, upper mounting platform, lower mounting platform are removably mounted in rack respectively, upper transmission platform is used for connecting vibration motor and connecting rod upper end, underdrive platform connects connecting rod lower end, it is vertically-mounted on upper mounting platform to have the guide frame across upper transmission platform, it is also connected with upper spring structure between upper mounting platform and upper transmission platform, is connected with lower spring structure between underdrive platform and lower mounting platform.This vibrating motor type blueberry seed harvester has the advantages that structure simple and reliable operation, stable.
Description
Technical field
The utility model belongs to blueberry seed harvester technical field, is related to a kind of blueberry seed harvester, especially a kind of vibration
Dynamic electric motor type blueberry seed harvester.
Background technique
Blueberry seed harvester is the mechanical equipment for picking blueberry, and blueberry currently on the market picks most and remains unchanged
Using manual type, also have using mechanical equipment.Current blueberry seed harvester unreasonable structural design, integral device work
Stability is not good enough, and the picking structures lateral rotation such as tooth row is generally used to pat picking blueberry mode, blueberry breakage rate when picking
Also relatively high.
In this regard, the utility model designs, a kind of structure is simple and reliable operation, stable blueberry seed harvester.
Summary of the invention
The purpose of this utility model is the presence of the above problem in view of the prior art, and it is simple and work to propose a kind of structure
Reliably, stable vibrating motor type blueberry seed harvester.
The purpose of this utility model can be realized by the following technical scheme: a kind of vibrating motor type blueberry seed harvester,
Include:
Rack；
Picking structure, including being vertically arranged, connecting rod on the rack, from top to bottom the multilayer that is distributed in connecting rod is adopted
Bar is plucked, the connecting rod and rack are flexibly connected；
Transmission mechanism, including the upper mounting platform, vibrating motor, upper transmission platform, underdrive being from top to bottom sequentially distributed
Platform, lower mounting platform, the upper mounting platform, lower mounting platform are removably mounted in rack respectively, and the upper transmission is flat
Platform is used for connecting vibration motor and connecting rod upper end, and the underdrive platform connects connecting rod lower end, erects on upper mounting platform
The guide frame across upper transmission platform directly is installed, upper spring knot is also connected between upper mounting platform and upper transmission platform
Structure is connected with lower spring structure between underdrive platform and lower mounting platform.
The guide frame includes being vertically installed on mounting platform and dividing as a further improvement of the utility model,
Cloth is in two upper guide posts of vibrating motor two sides, and the upper guide post is across upper transmission platform.
The upper spring structure setting is to be distributed in default square enclosure structure as a further improvement of the utility model,
Four tension springs of four corner locations, the tension spring are connected between mounting platform and upper transmission platform, the vibrating motor
It is preset in square enclosure structure positioned at this.
As a further improvement of the utility model, the vibrating motor type blueberry seed harvester include be distributed in preset it is rectangular
Four lower guide posts of four corner locations of structure are surrounded, the lower guide post is mounted on lower mounting platform and passes through underdrive
Platform, the lower spring structure are set as being set in correspondence with four lower one-to-one four pressure springs of guide post, the pressure spring
Lower guide post is outer and connects underdrive platform and lower mounting platform.
Every layer of picking lever, which is provided around, as a further improvement of the utility model, is correspondingly connected with more that bar is distributed.
The picking structure is set as two of left and right distribution, the transmission as a further improvement of the utility model,
Mechanism is arranged in a one-to-one correspondence with picking structure, and the transmission mechanism is correspondingly connected with the vertical upper and lower displacement of bar for driving.
As another improvement of the utility model, which further includes being arranged on the rack
And it is located at the blueberry below picking structure and receives structure.
The blueberry receives structure as a further improvement of the utility model, and picking structure corresponds, the indigo plant
The certain kind of berries receives structure setting below corresponding picking structure.
It includes the column being once distributed from front to back that the blueberry, which receives structure, as a further improvement of the utility model,
Receiver board, and it is equipped with conveyer belt in the column receiver board side, the receiver board is obliquely installed and lower one end and conveyer belt dock,
The receiver board is connected with rack, and the receiver board front faces corresponding picking structure, and is provided with return receiving back
Structure.
As the further improvement of the utility model, overlapping region up and down is provided between adjacent two receiver board.
Cart structure is connected in rack side as a further improvement of the utility model,.
Based on the above-mentioned technical proposal, the utility model embodiment at least can produce following technical effect: this vibrating motor
Formula blueberry seed harvester overall structure is simpler, rationally distributed, above and below the connecting rod that picking structure is driven by vibrating motor
It is mobile, and upper transmission platform and vibrating motor are servo-actuated, picking lever and connecting rod are servo-actuated, and the setting of guide frame more guarantees to be oriented to
Effect is not easy double swerve, the connecting rod and picking lever in this case are accomplished that vertically so that whole picking structure is straight up and down
Displacement on direction carries out blueberry picking by the formula of the floating up and down mode of stirring；Under original state, due to the self weight of each component,
Upper spring structure is in tensional state, and lower spring structure is in compressive state, when work, under the exciting force effect of vibrating motor
Overcome the related upper transmission platform of self weight, connecting rod and picking lever uplink, it is whole in the cooperation of vibrating motor and spring structure
Picking structure realizes the upper and lower displacement on vertical direction, and under vertical guide frame auxiliary, can to avoid at present other
Play in the horizontal direction that the kind of drive is easy to produce influences, reliable operation, stabilization.
Detailed description of the invention
Specific embodiment of the present utility model is described in further detail with reference to the accompanying drawing, in which:
Fig. 1 is the structural schematic diagram of one preferred embodiment of the utility model.
Fig. 2 is the partial structure diagram of one preferred embodiment of the utility model.
Fig. 3 is the structural schematic diagram at another visual angle Fig. 2.
Fig. 4 is the structural schematic diagram at another visual angle Fig. 3.
In figure, 100, rack；200, picking structure；210, connecting rod；220, picking lever；300, transmission mechanism；310, on
Mounting platform；320, vibrating motor；330, upper transmission platform；340, underdrive platform；350, lower mounting platform；360, guiding knot
Structure；361, upper guide post；370, upper spring structure；371, tension spring；380, lower spring structure；381, pressure spring；400, lower guide post；
500, blueberry receives structure；510, receiver board；520, conveyer belt；530, return structure；600, cart structure.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
Below with reference to Fig. 1 to Fig. 4, technical scheme provided by the present invention will be described in more detail.
As shown in Figures 1 to 4, this vibrating motor type blueberry seed harvester includes:
Rack 100；
Picking structure 200, including be vertically arranged in rack 100 connecting rod 210, be from top to bottom distributed in connecting rod
Multilayer picking lever 220 on 210, the connecting rod 210 and rack 100 are flexibly connected；
Transmission mechanism 300, upper mounting platform 310, vibrating motor 320, upper transmission including being from top to bottom sequentially distributed are flat
Platform 330, underdrive platform 340, lower mounting platform 350, the upper mounting platform 310, lower mounting platform 350 are detachable respectively to pacify
In rack 100, the upper transmission platform 330 is used for 210 upper end of connecting vibration motor 320 and connecting rod, vibrating motor 320
It is mounted on 330 upper end of transmission platform, upper 330 lower end of transmission platform and connecting rod 210 are docked；The underdrive platform 340 connects
210 lower end of extension bar in succession, it is vertically-mounted on upper mounting platform 310 to have the guide frame 360 across upper transmission platform 330, it leads
It is fixed to structure 360 and upper mounting platform 310, but be flexibly connected with upper transmission platform 330, it is flat for being oriented to and limiting upper transmission
Platform 330, and then the synchronous guide and limit for realizing vibrating motor 320；Between upper mounting platform 310 and upper transmission platform 330 also
It is connected with upper spring structure 370, lower spring structure 380 is connected between underdrive platform 340 and lower mounting platform 350；
Blueberry receives structure 500, is arranged in rack 100 and is located at below picking structure 200.
In the present invention, picking structure 200 is set as at least one set of, is used to pick blueberry, and blueberry receives knot
Structure 500 is placed in 200 lower section of picking structure, and the storage for receiving the blueberry of picking and can be used for realizing blueberry is conveyed with outside.
Vibrating motor 320 is the exciting source that power source and vibration source are combined as a whole, and is respectively to install one at armature spindle both ends
Group adjustable eccentric block obtains exciting force using the centrifugal force that axis and eccentric block high speed rotation generate.
Due to the guide and limit of guide frame 360 when vibrating motor vibrates, so that upper transmission platform 330 and the vibration above it
The dynamic vertical upper and lower displacement of motor, and the vertical upper and lower displacement of picking lever 220 in the related connecting rod 210 of connecting rod 210 is driven, it keeps away
Exempt from double swerve, guarantees working method straight up and down and picking effect, work efficiency is high.
The utility model protects a kind of vibrating motor type blueberry seed harvester, and overall structure is simpler, rationally distributed, moves
It is dynamic convenient, it can be suitably used for various blueberry picking environment；About 210 connecting rod of picking structure 200 is driven by vibrating motor 320
It is mobile, and upper transmission platform 330 and vibrating motor 320 are servo-actuated, picking lever 220 and connecting rod 210 are servo-actuated, guide frame 360
Setting more guarantees guide effect, so that whole picking structure 200 is straight up and down, is not easy double swerve, the connecting rod in this case
210 and picking lever 220 be accomplished that the displacement on vertical direction, blueberry picking is carried out by the formula of the floating up and down mode of stirring；Just
Under beginning state, due to the self weight of each component, upper spring structure 370 is in tensional state, and lower spring structure 380 is in compression shape
State, when work, overcome under the exciting force effect of vibrating motor 320 the related upper transmission platform 330 of self weight, connecting rod 210 and
220 uplink of picking lever, in the cooperation of vibrating motor 320 and spring structure, whole picking structure 200 is realized on vertical direction
Upper and lower displacement, and in the case where vertical guide frame 360 assists, it can be to avoid the level that other kinds of drive be easy to produce at present
Play on direction influences, reliable operation, stabilization.
When work, 220 high-frequency of picking lever moves up and down, and drives blueberry branch item to move up and down, blueberries are due to inertia
Power is detached from blueberry branch, and the utility model uses the Softening of above-mentioned vertical up-down vibration formula, with current lateral Patting type
Softening has notable difference, works relatively reliable, and stability is good, can reduce blueberry breakage rate, guarantees picking efficiency and matter
It measures, also receives structure 500 in picking station arranged beneath blueberry in this equipment, further realize the reception and conveying of blueberry, side
Just it collects, prevents blueberry from falling breakage, promote whole work efficiency, automation degree of equipment is high.
As a kind of the utility model preferably or optional embodiment, guide frame 360 include be vertically installed at installation
On platform 310 and two of 320 two sides of vibrating motor upper guide posts 361 are distributed in, it is flat that the upper guide post 361 passes through upper transmission
Platform 330.
In the present invention, preferably upper spring structure 370 is set as being distributed in four corners of default square enclosure structure
Four tension springs 371 of position, the tension spring 371 are connected between mounting platform 310 and upper transmission platform 330, the vibration
Motor 320 is located in the default square enclosure structure, and 371 structure of tension spring and upper 330 initial drawn state of transmission platform cooperate more
It is good, and topology layout is simpler, compact.
It simply says, four tension springs 371, which are distributed in, presets four rectangular corner locations, i.e. four 371 lines of tension spring are
It is rectangular, and further preferred four tension springs 371 connect upper 310 corner of mounting platform and corresponding upper 330 corner of transmission platform, guarantee
Connect relatively reliable, when overall work is more stable.
Further, this vibrating motor type blueberry seed harvester includes being distributed in four corners of default square enclosure structure position
The lower guide post 400 of four set, the lower guide post 400 are mounted on lower mounting platform 350 and pass through underdrive platform 340,
Underdrive platform 340 is limited and is oriented in this way, guarantees the effect straight up and down of picking structure 200；The lower spring knot
Structure 380 is set as being set in corresponding lower guiding with four lower guide posts, 400 one-to-one four pressure springs 381, the pressure spring 381
Column 400 is outer and connects underdrive platform 340 and lower mounting platform 350,381 structure of pressure spring and 340 initial compression of underdrive platform
State cooperates more preferably, guarantees that connection is relatively reliable, when overall work is more stable.
Preferably, every layer of picking lever 220, which is provided around, is correspondingly connected with more that bar 210 is distributed, can also preferably every layer
On at least several root longs of picking lever 220 it is short different, such structure setting more ensure that picking effect and picking it is flexible
Property.
In the present case, 210 upper end of connecting rod is connected with upper transmission platform 330,210 lower end of connecting rod and underdrive platform
340 are connected, and such transmission mechanism 300 can reliably drive 210 upper and lower displacement of connecting rod, but connecting rod 210 and rack 100
It does not depart from again, is further ensured that the stability of integral device work.
Guarantee whole as a kind of preferred or optional embodiment to improve whole picking efficiency and utilization rate of equipment and installations
Effect is picked, picking structure 200 is set as two of left and right distribution, and the transmission mechanism 300 is corresponded with picking structure 200
Setting, the transmission mechanism 300 are correspondingly connected with the vertical upper and lower displacement of bar 210 for driving.
When work, every group of picking structure 200 is driven by corresponding transmission mechanism 300, and adds corresponding guide frame
360, it is ensured that the reliable mobile of whole picking structure 200 straight up and down guarantees the reliability of stationarity and work.
In the present case, connecting rod 210 and the entirety that picking lever 220 forms thereon are with transmission platform for support, opposite to pass
Moving platform rotation, bearing arrangement is internally provided in connecting rod 210.This rotates to be passive rotation, in machine traveling process,
Due to the barrier force of blueberry tree, connecting rod 210 passively rotates, and such as without passive rotation, direct collision blueberry tree is easy for, to blueberry
Tree causes to damage.
Further, to allow connecting rod 210 to become flexible link, add when being turned to during preventing connecting rod 210 from moving up and down
Speed is excessive, causes inertia force excessive, vibrates entire rack 100 excessive.Transmission platform in this case is further flat with installation
Platform, spring structure are cooperatively connected to form a relatively reliable transmission platform entirety.
In the present case, for convenience of mobile and transport, cart structure 600 preferably is connected in 100 side of rack, and can be with
Wheel is installed below rack 100, conveniently moving, quickly is practical.
The utility model further preferably blueberry receives structure 500 and picking structure 200 corresponds, and the blueberry receives structure
500 settings are below corresponding picking structure 200.It is respectively corresponding although two groups of operations simultaneously of picking structure 200 in this case
Transmission mechanism 300 and lower section receipts fruit structure independently, first can be unloaded after one side expired, change container etc.
Operation, flexibility is good, and whole work efficiency is high.
Further, to guarantee that blueberry recovery operation is relatively reliable, and integral device space layout is promoted, it is ensured that blue
It includes the column receiver board 510 being sequentially distributed from front to back that the received integrality of the certain kind of berries, preferably blueberry, which receive structure 500, and at this
510 side of column receiver board is equipped with conveyer belt 520, and the receiver board 510 is obliquely installed and lower one end and conveyer belt 520 dock,
The receiver board 510 is connected with rack 100, and 510 front of receiver board faces corresponding picking structure 200, and in receiver board 510
The back side is provided with return structure 530, and good damping result also has noise reduction effect.
Preferably, receiver board 510 is installed in rotation in rack 100, is provided with and rack at 510 back side of receiver board
The return structure 530 of 100 connections, the return structure 530 reset after rotating for receiver board 510, and the return structure 530 leans on
Nearly corresponding lower one end of receiver board 510, also has certain effectiveness in vibration suppression.
In this blueberry seed harvester, the receiver board 510 of inclination and front and back distribution can receive the blueberry after picking, receiver board
510 are installed in rotation in rack 100, and blueberries are by buffer deceleration and sliding along inclined receiver board 510 after falling
Enter in conveyer belt 520, when blueberry seed harvester is in operation, two sides receiver board 510 is under the impetus of tree trunk, respectively around its rotation
Turn center to separate to two sides rotation, then 510 self-return of receiver board under the restoring force effect of return structure 530, to protect
Card seed harvester passes through blueberry tree.
During traveling, successively rotation separates receiver board 510 in order, and return spring is provided at rotation center
Etc. above-mentioned return structure 530, after through blueberry tree under the action of the spring, the timely return of receiver board 510, to guarantee blueberry not
Ground can be fallen, it is whole to receive fruit structure reliable operation, it is fitted close between all parts and forms an efficient, stable fruit receipts
Collect structure, the reception and conveying of blueberry may be implemented, facilitate collection, reduces blueberry and fall breakage rate, promote whole work efficiency,
Automation degree of equipment is high.
Further, it is provided with overlapping region up and down between adjacent two receiver board 510, is not easy to omit blueberry in this way, and
Mutually auxiliary, adjacent cushion effect complement each other, and buffering effect is more preferably.
It is preferred that being provided with recycling bins in 520 exit of conveyer belt, recycling bins are preferably removably mounted in rack 100, side
Just it recycles, is replaced after full also more convenient.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (10)
1. a kind of vibrating motor type blueberry seed harvester, comprising:
Rack；
Picking structure, it is characterised in that: including being vertically arranged connecting rod on the rack, being from top to bottom distributed in connecting rod
Multilayer picking lever, the connecting rod and rack are flexibly connected；
Transmission mechanism, including be from top to bottom sequentially distributed upper mounting platform, vibrating motor, upper transmission platform, underdrive platform,
Lower mounting platform, the upper mounting platform, lower mounting platform are removably mounted in rack respectively, and the upper transmission platform is used for
Connecting vibration motor and connecting rod upper end, the underdrive platform connects connecting rod lower end, vertically-mounted on upper mounting platform
There is the guide frame across upper transmission platform, upper spring structure is also connected between upper mounting platform and upper transmission platform,
Lower spring structure is connected between underdrive platform and lower mounting platform.
2. vibrating motor type blueberry seed harvester according to claim 1, it is characterised in that: the guide frame includes perpendicular
Two upper guide posts of vibrating motor two sides are directly mounted on mounting platform and are distributed in, the upper guide post passes through upper transmission
Platform.
3. vibrating motor type blueberry seed harvester according to claim 1, it is characterised in that: the upper spring structure setting
For four tension springs for being distributed in default four corner locations of square enclosure structure, the tension spring is connected to mounting platform and upload
Between moving platform, the vibrating motor is located in the default square enclosure structure.
4. vibrating motor type blueberry seed harvester according to claim 1, it is characterised in that: the vibrating motor type blueberry is adopted
Plucking equipment includes being distributed in four lower guide posts of default four corner locations of square enclosure structure, and the lower guide post is mounted on
On lower mounting platform and underdrive platform is passed through, the lower spring structure is set as and four one-to-one four of lower guide posts
Pressure spring, the pressure spring are set in outside corresponding lower guide post and connect underdrive platform and lower mounting platform.
5. vibrating motor type blueberry seed harvester according to claim 1, it is characterised in that: every layer of picking lever is set as ring
Around be correspondingly connected with bar distribution more.
6. vibrating motor type blueberry seed harvester according to claim 1, it is characterised in that: the picking structure is set as
Two of left and right distribution, the transmission mechanism is arranged in a one-to-one correspondence with picking structure, and the transmission mechanism is for driving corresponding company
The vertical upper and lower displacement of extension bar.
7. vibrating motor type blueberry seed harvester according to any one of claims 1 to 6, it is characterised in that: vibration electricity
Machine formula blueberry seed harvester further includes the blueberry reception structure for being arranged on the rack and being located at below picking structure.
8. vibrating motor type blueberry seed harvester according to claim 7, it is characterised in that: the blueberry receives structure packet
The column receiver board being once distributed from front to back is included, and is equipped with conveyer belt in the column receiver board side, the receiver board inclination is set
It sets and lower one end and conveyer belt docking, the receiver board is connected with rack, the receiver board front faces corresponding picking structure,
And return structure is provided with receiving back.
9. vibrating motor type blueberry seed harvester according to claim 8, it is characterised in that: set between adjacent two receiver board
It is equipped with overlapping region up and down.
10. vibrating motor type blueberry seed harvester according to any one of claims 1 to 6, it is characterised in that: in rack one
Side is connected with cart structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822206884.2U CN209473059U (en) | 2018-12-26 | 2018-12-26 | Vibrating motor type blueberry seed harvester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822206884.2U CN209473059U (en) | 2018-12-26 | 2018-12-26 | Vibrating motor type blueberry seed harvester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209473059U true CN209473059U (en) | 2019-10-11 |
Family
ID=68128441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822206884.2U Active CN209473059U (en) | 2018-12-26 | 2018-12-26 | Vibrating motor type blueberry seed harvester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209473059U (en) |
-
2018
- 2018-12-26 CN CN201822206884.2U patent/CN209473059U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208856285U (en) | A kind of efficient vibration delivery platform of ram-jolt material | |
| CN106494896B (en) | A kind of solar pipe palletizing apparatus | |
| CN209473061U (en) | Connecting-rod mechanism type blueberry seed harvester | |
| CN109548484A (en) | Vibrating motor type blueberry seed harvester | |
| CN101475061B (en) | Side vibration compactor | |
| CN209473059U (en) | Vibrating motor type blueberry seed harvester | |
| CN107323765B (en) | Modularization fully-automatic packaging production line suitable for Badmintons holder | |
| CN208000898U (en) | Silicon chip transport system | |
| CN209473062U (en) | Cam mechanism type blueberry seed harvester | |
| CN107787680B (en) | A kind of continuous shaking formula fructus lycii picker | |
| CN206871846U (en) | A kind of sheet material radiating collection system | |
| CN110217546A (en) | A kind of height adjustable cleaning agent transporting equipment of convenient and efficient | |
| CN106391515B (en) | Ceramic tile on-line sorting device | |
| CN201371951Y (en) | Laterally arranged vibrating jolting-to-be-solid device | |
| CN210150210U (en) | Buffer device for blanking of metal parts of automobile | |
| CN109121721B (en) | Vibrating fruit picking device and picking method | |
| CN108674744A (en) | A kind of packaging bag shedding mechanism | |
| CN109548486B (en) | Connecting rod mechanism type blueberry picking equipment | |
| CN109548485A (en) | Cam mechanism type blueberry seed harvester | |
| CN209080727U (en) | A kind of storage mechanism of unpowered support roller | |
| CN202214016U (en) | Automatic separation device for bar-shaped frameworks | |
| CN209526954U (en) | A kind of automatic plate collecting machine | |
| CN205972964U (en) | Perpendicular extracting device of three stations | |
| CN202857306U (en) | Peanut combined harvester transverse conveying device | |
| CN209473051U (en) | The receipts fruit structure of blueberry seed harvester |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |