CN214430820U - A even watering device for tea planting - Google Patents
A even watering device for tea planting Download PDFInfo
- Publication number
- CN214430820U CN214430820U CN202120274808.4U CN202120274808U CN214430820U CN 214430820 U CN214430820 U CN 214430820U CN 202120274808 U CN202120274808 U CN 202120274808U CN 214430820 U CN214430820 U CN 214430820U
- Authority
- CN
- China
- Prior art keywords
- face
- rear end
- water storage
- shell
- watering device
- 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
- 241001122767 Theaceae Species 0.000 title claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 65
- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 239000007921 spray Substances 0.000 claims abstract description 22
- 238000002347 injection Methods 0.000 claims abstract description 9
- 239000007924 injection Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims description 35
- 238000003973 irrigation Methods 0.000 claims description 5
- 230000002262 irrigation Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 235000013616 tea Nutrition 0.000 description 20
- 230000002337 anti-port Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 235000009024 Ceanothus sanguineus Nutrition 0.000 description 2
- 235000015459 Lycium barbarum Nutrition 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 235000007516 Chrysanthemum Nutrition 0.000 description 1
- 244000189548 Chrysanthemum x morifolium Species 0.000 description 1
- 241001219085 Cyclopia Species 0.000 description 1
- 206010066054 Dysmorphism Diseases 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 240000003553 Leptospermum scoparium Species 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 235000015092 herbal tea Nutrition 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Landscapes
- Nozzles (AREA)
Abstract
The utility model discloses an even watering device for tealeaves is planted, including flexible hose, connecting pipe, water injection hole, water storage box, shower nozzle, chassis, gyro wheel, handle, battery, controller, water pump and slewing mechanism, the utility model discloses a set up slewing mechanism in the water storage box rear end, drive the shower nozzle through the transfer line and rotate, and the shower nozzle then drives the shower nozzle and rotate to realize that the shower nozzle rotates the in-process that sprays on the limit and has increaseed the area that sprays tealeaves, make the watering of tealeaves more even, reached and made more tealeaves obtain the watering simultaneously, improved the beneficial effect of watering device practicality.
Description
Technical Field
The utility model relates to a watering device correlation field specifically is an even watering device for tea planting.
Background
Tea, which refers to the leaves and buds of tea tree, broadly to the leaves of the evergreen bush tea tree that can be used for making tea, and the beverages brewed with these leaves, later to be extended to all herbal teas brewed with the flowers, leaves, seeds, roots of the plant, such as "chrysanthemum tea" and the like; "herb tea" and the like prepared by various medicinal materials are also called thunder bud in Chinese literature, and a pouring device is needed when the planted tea is poured at present.
When watering device irrigates tealeaves, because the area that partial tealeaves was planted is great, and watering device's the range of spouting water is comparatively fixed, causes the area of the tealeaves that watering device can water also comparatively fixed to make a little more away tealeaves be difficult to obtain the watering, reduced watering device's practicality.
SUMMERY OF THE UTILITY MODEL
Therefore, in order to solve the above-mentioned insufficiency, the utility model discloses herein provide an even watering device for tea planting.
The utility model is realized by constructing a uniform irrigation device for tea planting, which comprises a flexible hose, a connecting pipe and a water injection hole, wherein the two ends of the flexible hose are respectively connected with the bottom of the inner side of the connecting pipe and the middle part of the top of the inner side of the spraying pipe, the connecting pipe is connected with the output end of a water pump after passing through the top of the outer side of the water storage box, a rotating mechanism is arranged at the rear end of the water storage box and comprises a shell, a driving wheel, a motor, a driving belt, a circular plate, a round block, a connecting mechanism, a hollow plate, a driving rod and an L-shaped frame, the shell is attached to the top of the rear end surface of the water storage box, the driving wheel is provided with two left and right ends at the inner side of the shell, the driving wheel is rotatably connected with the inner side of the shell, the motor is arranged at the right end of the front end surface of the shell, the output shaft at the rear end of the motor is fixedly connected with the middle part of the front end surface of the driving wheel, the left and right ends at the inner side of the driving belt are respectively clung to the outer vertical surfaces of the two driving wheels, the circular plate is fixedly connected to the middle of the rear end face of the driving wheel, the round block is connected to the edge of the rear end face of the circular plate through a connecting mechanism, the round block movably extends into the inner side of the hollow plate, a transmission rod is arranged at the bottom of the front end face of the hollow plate and penetrates through the bottom of the front end face of the inner side of the shell, the transmission rod is fastened to the middle of the rear end face of the spray pipe, the L-shaped frame is mounted on the bottom end face of the shell, and the L-shaped frame is locked to the middle lower portion of the rear end face of the water storage tank.
Preferably, the water injection hole is seted up in water storage box top face, the water storage box closure is in chassis top face rear end, and the closure of water storage box left end face front end has the controller, the shower rotates and installs in water storage box outside right-hand member, and the shower outside of tubes side keeps away from water storage box one end and installs the shower nozzle, the gyro wheel is installed on four ends of chassis terminal surface, and installs handle and battery respectively in chassis top face front end and bottom face middle part, the water pump sets up in the inboard bottom of water storage box.
Preferably, the connecting mechanism comprises a rotating block, a screw rod and a threaded hole, the rotating block is movably nested in the middle of the rear end face of the round block, the screw rod is arranged in the middle of the front end face of the rotating block, the side surface of the screw rod is in threaded fit with the end face of the inner side of the threaded hole, and the threaded hole is formed in the rear end face of the round plate.
Preferably, the transmission belt is in an 8-shaped structure, and the width of the transmission belt is one third of the width of the transmission wheel.
Preferably, the two L-shaped frames are arranged on the bottom end face of the shell, and the two L-shaped frames are symmetrically arranged at the left end and the right end of the bottom of the shell.
Preferably, the middle part of the rear end face of the shell is of a hollow structure, and round holes matched with the transmission rod are formed in the left end and the right end of the bottom of the front end face of the shell.
Preferably, the threaded holes are arranged on the rear end face of the circular plate at equal intervals, and the centers of all the threaded holes and the rear end face of the circular plate are located on the same axis.
Preferably, the rotating block is a cylindrical mechanism, and the vertical distance between the rear end face of the rotating block and the rear end face of the round block is 2 cm-5 cm.
The utility model has the advantages of as follows: the utility model discloses an improve and provide an even watering device for tea planting here, compare with equipment of the same type, have following improvement:
the method has the advantages that: an even watering device for tea planting, through having set up slewing mechanism in the water storage box rear end, drive the shower through the transfer line and rotate, and the shower then drives the shower nozzle and rotate to realize that the shower nozzle rotates the in-process that sprays on the limit and has strengthened the area that sprays to tealeaves, make the watering of tealeaves more even, reached and made more tealeaves obtain the watering simultaneously, improved the beneficial effect of watering device practicality.
The method has the advantages that: an even watering device for tealeaves is planted is 8 word structures through the drive belt, and the drive belt width is the third of drive wheel width, is convenient for drive two drive wheels and carries out the antiport, and then drives two sets of shower nozzles and carries out the antiport and water tealeaves.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the front cross-sectional structure of the water storage tank of the present invention;
fig. 3 is a schematic front sectional view of the rotating mechanism of the present invention;
fig. 4 is a schematic view of the connection structure of the transmission rod of the present invention;
fig. 5 is an enlarged schematic view of a structure in fig. 3 according to the present invention.
Wherein: the device comprises a telescopic hose-1, a connecting pipe-2, a water injection hole-3, a water storage tank-4, a spray pipe-5, a spray head-6, an underframe-7, a roller-8, a handle-10, a storage battery-11, a controller-12, a water pump-13, a rotating mechanism-9, a shell-91, a transmission wheel-92, a motor-93, a transmission belt-94, a circular plate-95, a circular block-96, a connecting mechanism-97, a hollow plate-98, a transmission rod-99, an L-shaped frame-910, a rotating block-971, a screw-972 and a threaded hole-973.
Detailed Description
The present invention will be described in detail with reference to the accompanying fig. 1-5, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 and 2, the present invention provides a uniform irrigation device for tea planting, which comprises a flexible hose 1, a connecting pipe 2 and water injection holes 3, wherein two ends of the flexible hose 1 are respectively connected to the bottom of the inner side of the connecting pipe 2 and the middle of the top of the inner side of the spray pipe 5, the connecting pipe 2 is connected to the output end of the water pump 13 after passing through the top of the outer side of the water storage tank 4, the water injection holes 3 are arranged on the top end face of the water storage tank 4, the water storage tank 4 is locked at the rear end of the top end face of the bottom frame 7, and the front end of the left end surface of the water storage tank 4 is locked with a controller 12, the spray pipe 5 is rotatably arranged at the right end outside the water storage tank 4, and a spray head 6 is arranged at one end of the outer side of the spray pipe 5 far away from the water storage tank 4, four ends of the end surface of the underframe 7 are provided with idler wheels 8, and the front end of the top end surface and the middle part of the bottom end surface of the underframe 7 are respectively provided with a handle 10 and a storage battery 11, and a water pump 13 is arranged at the bottom end of the inner side of the water storage tank 4.
Referring to fig. 3 and 4, the present invention provides a uniform irrigation device for tea planting by improvement, a rotating mechanism 9 is disposed at the rear end of a water storage tank 4, the rotating mechanism 9 includes a housing 91, a driving wheel 92, a motor 93, a driving belt 94, a circular plate 95, a circular block 96, a connecting mechanism 97, a hollow plate 98, a driving rod 99 and an L-shaped frame 910, the housing 91 is attached to the top of the rear end face of the water storage tank 4, the middle portion of the rear end face of the housing 91 is a hollow structure, and the left and right ends of the bottom of the front end face of the housing 91 are provided with circular holes matching with the driving rod 99, so as to facilitate the operation of the rotating block 971, facilitate the driving rod 99 to pass through the housing 91, the driving wheel 92 is provided with two ends on the left and right of the inner side of the housing 91, and the driving wheel 92 is rotatably connected with the inner side of the housing 91, the motor 93 is mounted at the right end of the front end face of the inner side of the housing 91, and the rear end output shaft of the motor 93 is fixedly connected to the middle portion of the front end face of the driving wheel 92 on the right side, the left and right ends of the inner side of the transmission belt 94 are respectively clung to the outer opposite surfaces of the two transmission wheels 92, the transmission belt 94 is in a 8-shaped structure, the width of the transmission belt 94 is one third of the width of the transmission wheels 92, so as to drive the two transmission wheels 92 to reversely rotate and further drive the two groups of spray heads 6 to reversely rotate to irrigate tea leaves, the circular plate 95 is fixedly connected to the middle part of the rear end surface of the transmission wheels 92, the circular block 96 is connected to the edge of the rear end surface of the circular plate 95 through the connecting mechanism 97, the circular block 96 movably extends into the inner side of the hollow plate 98, the bottom part of the front end surface of the hollow plate 98 is provided with a transmission rod 99, the transmission rod 99 penetrates through the bottom part of the front end surface of the inner side of the shell 91, the transmission rod 99 is fastened to the middle part of the rear end surface of the spray pipe 5, the L-shaped frame 910 is mounted on the bottom end surface of the shell 91, the L-shaped frame 910 is locked to the middle and the lower part of the rear end surface of the water storage tank 4, and the two L-shaped frames 910 are symmetrically arranged at the left and right ends of the bottom of the shell 91, so as to be convenient for stably supporting the shell 91.
Referring to fig. 5, the utility model provides a uniform irrigation device for tea planting by improvement, a connecting mechanism 97 comprises a rotating block 971, a screw 972 and a threaded hole 973, the rotating block 971 is movably nested in the middle of the rear end face of a round block 96, and the middle part of the front end surface of the rotating block 971 is provided with a screw 972, the rotating block 971 is a cylindrical mechanism, and the vertical distance between the rear end face of the rotating block 971 and the rear end face of the round block 96 is 2cm to 5cm, so that the rotating block 971 can be conveniently rotated, meanwhile, the round block 96 can conveniently rotate outside the rotating block 971, the side surface of the screw 972 is in threaded fit with the end surface of the inner side of the threaded hole 973, the threaded hole 973 is arranged on the rear end surface of the round plate 95, more than two threaded holes 973 are arranged on the rear end surface of the round plate 95 at equal intervals, and all the threaded holes 973 and the circle center of the rear end face of the circular plate 95 are located on the same axis, so that the circular block 96 is conveniently fixed at different positions of the rear end of the circular plate 95, and the rotation amplitude of the hollow plate 98 is further adjusted.
The utility model provides a uniform watering device for tea planting through improvement, and the working principle is as follows;
firstly, water for watering tea leaves can be injected into the water storage tank 4 through the water injection hole 3, the storage battery 11 is charged with a certain amount of electricity, and then the device is integrally moved to a proper position by pushing the handle 10 to drive the roller 7 to rotate;
secondly, the position of the round block 96 can be adjusted according to actual needs, the round block 96 can be driven by the rotating block 971 and the screw 972 to be inserted into the inner side of a proper threaded hole 973, and then the rotating block 971 is rotated to drive the screw 972 to rotate, so that the positions of the rotating block 971 and the round block 96 driven by the screw 972 are fixed;
thirdly, at this time, the water pump 13 can be started by the controller 12 to extract the water in the water storage tank 4, and the water is guided into the inner side of the flexible hose 1 through the connecting pipe 2, the flexible hose 1 guides the water into the spray pipe 5, and finally the water is sprayed out through the spray head 6, meanwhile, the motor 92 can be started to drive the right driving wheel 92 to rotate, the right driving wheel 92 drives the left driving wheel 92 to rotate through the driving belt 94 in the rotating process, the two driving wheels 92 drive the round block 96 to rotate, the round block 96 drives the hollow plate 97 to swing left and right circularly in the rotating process, the hollow plate 97 drives the fixedly connected driving rod 99 and the spray pipe 5 to rotate circularly, and the spray pipe 5 rotates circularly to drive the spray head 6 to spray the tea leaves to irrigate the tea leaves.
The utility model discloses an improve and provide an even watering device for tea planting, drive shower 5 through transfer line 99 and rotate, and shower 5 then drives shower nozzle 6 and rotates, thereby realize that shower nozzle 6 has strengthened the area that sprays to tealeaves at the in-process that the limit sprayed rotating on limit, make the watering of tealeaves more even, reached and made more tealeaves obtain the watering simultaneously, the beneficial effect of watering device practicality has been improved, be 8 word structure through drive belt 94, and drive belt 94 width is the third of drive wheel 92 width, be convenient for drive two drive wheels 92 of 94 and carry out the antiport, and then drive two sets of shower nozzles 6 and carry out the antiport and water tealeaves.
The basic principle and the main characteristics of the utility model and the advantages of the utility model have been shown and described above, and the utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the record of the description with the drawing, and the concrete connection mode of each part all adopts conventional means such as ripe bolt rivet among the prior art, welding, and machinery, part and equipment all adopt prior art, conventional model, and conventional connection mode in the prior art is adopted in addition to circuit connection, and the details are not repeated here.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A uniform irrigation device for tea planting comprises a flexible hose (1), a connecting pipe (2) and a water injection hole (3), wherein two ends of the flexible hose (1) are respectively connected to the bottom of the inner side of the connecting pipe (2) and the middle of the top of the inner side of a spray pipe (5), and the connecting pipe (2) penetrates through the top of the outer side of a water storage tank (4) and then is connected to the output end of a water pump (13);
the method is characterized in that: the water storage tank is characterized by further comprising a rotating mechanism (9), the rotating mechanism (9) is arranged at the rear end of the water storage tank (4), the rotating mechanism (9) comprises a shell (91), a transmission wheel (92), a motor (93), a transmission belt (94), a circular plate (95), a circular block (96), a connecting mechanism (97), a hollow plate (98), a transmission rod (99) and an L-shaped frame (910), the shell (91) is attached to the top of the rear end face of the water storage tank (4), the transmission wheel (92) is provided with two ends which are respectively arranged at the left end and the right end of the inner side of the shell (91), the transmission wheel (92) is rotatably connected with the inner side of the shell (91), the motor (93) is arranged at the right end of the front end face of the inner side of the shell (91), an output shaft at the rear end of the motor (93) is fixedly connected to the middle part of the front end face of the right side of the transmission wheel (92), the left end and the right end of the inner side of the transmission belt (94) are respectively closely attached to the outer sides of the two transmission wheels (92), the circular plate (95) is fixedly connected to the middle of the rear end face of the driving wheel (92), the round block (96) is connected to the edge of the rear end face of the circular plate (95) through a connecting mechanism (97), the round block (96) movably extends into the inner side of the hollow plate (98), a transmission rod (99) is arranged at the bottom of the front end face of the hollow plate (98), the transmission rod (99) penetrates through the bottom of the front end face of the inner side of the shell (91), the transmission rod (99) is fastened to the middle of the rear end face of the spray pipe (5), the L-shaped frame (910) is installed on the bottom end face of the shell (91), and the L-shaped frame (910) is locked to the middle lower portion of the rear end face of the water storage tank (4).
2. A uniform watering device for tea planting according to claim 1 wherein: water injection hole (3) are seted up in water storage box (4) top face, water storage box (4) closure is in chassis (7) top face rear end, and water storage box (4) left end face front end closure has controller (12), shower (5) are rotated and are installed in water storage box (4) outside right-hand member, and shower (5) outside is kept away from water storage box (4) one end and is installed shower nozzle (6), gyro wheel (8) are installed to chassis (7) terminal surface four ends, and install handle (10) and battery (11) respectively in chassis (7) top face front end and bottom face middle part, water pump (13) set up in water storage box (4) inboard bottom.
3. A uniform watering device for tea planting according to claim 1 wherein: coupling mechanism (97) are including changeing piece (971), screw rod (972) and screw hole (973), change piece (971) activity nested in circle piece (96) rear end face middle part, and change piece (971) preceding terminal surface middle part and be provided with screw rod (972), screw rod (972) side surface and screw hole (973) medial surface screw-thread fit, screw hole (973) are seted up in plectane (95) rear end face.
4. A uniform watering device for tea planting according to claim 1 wherein: the transmission belt (94) is in an 8-shaped structure, and the width of the transmission belt (94) is one third of that of the transmission wheel (92).
5. A uniform watering device for tea planting according to claim 1 wherein: the L-shaped frames (910) are arranged on the bottom end face of the shell (91), and the left end and the right end of the bottom of the shell (91) are symmetrically arranged on the two L-shaped frames (910).
6. A uniform watering device for tea planting according to claim 1 wherein: the middle part of the rear end face of the shell (91) is of a hollow structure, and round holes matched with the transmission rod (99) are formed in the left end and the right end of the bottom of the front end face of the shell (91).
7. A uniform watering device for tea planting according to claim 3 wherein: the threaded holes (973) are arranged on the rear end face of the circular plate (95) at equal intervals, and the circle centers of all the threaded holes (973) and the rear end face of the circular plate (95) are located on the same axis.
8. A uniform watering device for tea planting according to claim 3 wherein: the rotating block (971) is a cylindrical mechanism, and the vertical distance between the rear end face of the rotating block (971) and the rear end face of the round block (96) is 2 cm-5 cm.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202120274808.4U CN214430820U (en) | 2021-01-30 | 2021-01-30 | A even watering device for tea planting |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202120274808.4U CN214430820U (en) | 2021-01-30 | 2021-01-30 | A even watering device for tea planting |
Publications (1)
Publication Number | Publication Date |
---|---|
CN214430820U true CN214430820U (en) | 2021-10-22 |
Family
ID=78142220
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202120274808.4U Expired - Fee Related CN214430820U (en) | 2021-01-30 | 2021-01-30 | A even watering device for tea planting |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN214430820U (en) |
-
2021
- 2021-01-30 CN CN202120274808.4U patent/CN214430820U/en not_active Expired - Fee Related
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN207054336U (en) | A kind of gardens roadside flowers and plants swing type sprays watering device | |
CN210017288U (en) | Irrigation equipment for corn planting | |
CN214430820U (en) | A even watering device for tea planting | |
CN213427526U (en) | Gardens water-saving irrigation device | |
CN211353657U (en) | Watering lorry is used in municipal garden of adjustable spraying range | |
CN208783424U (en) | A kind of agricultural irrigation sprinkler | |
CN214545619U (en) | Tealeaves of adjustable spray angle is planted with spouting medicine device | |
CN208211091U (en) | A kind of irrigation rig convenient for angular adjustment | |
CN215380993U (en) | Plum seedling cultivation auxiliary device | |
CN215380238U (en) | Be applied to intelligent big-arch shelter that nursery stock was cultivated | |
CN215819566U (en) | Tealeaves is planted and is used irrigation equipment convenient to allotment irrigation volume | |
CN216164089U (en) | Water-saving sprinkler for garden sprinkling irrigation | |
CN214413738U (en) | Irrigation equipment of town road afforestation nursery stock | |
CN213784076U (en) | Novel orchard is automatic to spout medicine fertilization irrigation weeding device | |
CN212709445U (en) | A wheel barrow for adorning it is cultivated in a pot | |
CN210987508U (en) | Tea-oil camellia is planted and is used irrigation equipment | |
CN112790046A (en) | Be applied to intelligent big-arch shelter that nursery stock was cultivated | |
CN208387488U (en) | A kind of economical and practical type spray drop filling device | |
CN215935815U (en) | Movable farmland water-saving irrigation device | |
CN211983075U (en) | Make things convenient for tea planting of pipeline removal to use watering device | |
CN211745155U (en) | Soil loosening device based on saline and alkaline land greening construction | |
CN218163861U (en) | A sprinkling irrigation equipment for tendril-leaved fritillary bulb is female | |
CN214709383U (en) | Peony is planted with device that waters | |
CN219515054U (en) | Child forest nurturing and medicine scattering device | |
CN220654298U (en) | Gardens irrigation equipment that conveniently removes |
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: 20211022 |
|
CF01 | Termination of patent right due to non-payment of annual fee |