CN215212023U - Building energy-saving external wall heat-insulation decorative plate structure - Google Patents
Building energy-saving external wall heat-insulation decorative plate structure Download PDFInfo
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- CN215212023U CN215212023U CN202120212817.0U CN202120212817U CN215212023U CN 215212023 U CN215212023 U CN 215212023U CN 202120212817 U CN202120212817 U CN 202120212817U CN 215212023 U CN215212023 U CN 215212023U
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- board
- plate
- rear surface
- rock wool
- front surface
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- 238000009413 insulation Methods 0.000 title claims abstract description 17
- 239000011347 resin Substances 0.000 claims abstract description 77
- 229920005989 resin Polymers 0.000 claims abstract description 77
- 239000011490 mineral wool Substances 0.000 claims abstract description 41
- 229920002635 polyurethane Polymers 0.000 claims abstract description 40
- 239000004814 polyurethane Substances 0.000 claims abstract description 40
- 239000010425 asbestos Substances 0.000 claims abstract description 39
- 229910052895 riebeckite Inorganic materials 0.000 claims abstract description 39
- 239000004793 Polystyrene Substances 0.000 claims abstract description 34
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 34
- 229920002223 polystyrene Polymers 0.000 claims abstract description 34
- 239000010959 steel Substances 0.000 claims abstract description 34
- 239000011094 fiberboard Substances 0.000 claims abstract description 21
- 230000003712 anti-aging effect Effects 0.000 claims abstract description 5
- 239000000835 fiber Substances 0.000 claims description 19
- 239000011701 zinc Substances 0.000 claims description 12
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 11
- 229910052725 zinc Inorganic materials 0.000 claims description 11
- 238000001125 extrusion Methods 0.000 claims description 6
- 229920006389 polyphenyl polymer Polymers 0.000 claims description 6
- FJMNNXLGOUYVHO-UHFFFAOYSA-N aluminum zinc Chemical compound [Al].[Zn] FJMNNXLGOUYVHO-UHFFFAOYSA-N 0.000 claims 2
- 238000005269 aluminizing Methods 0.000 claims 1
- 229920000139 polyethylene terephthalate Polymers 0.000 abstract description 9
- 239000005020 polyethylene terephthalate Substances 0.000 abstract description 9
- -1 polyethylene terephthalate Polymers 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 15
- 238000004321 preservation Methods 0.000 description 12
- 230000003014 reinforcing effect Effects 0.000 description 7
- 230000032683 aging Effects 0.000 description 6
- 230000035939 shock Effects 0.000 description 6
- 239000000725 suspension Substances 0.000 description 6
- 238000005034 decoration Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000003628 erosive effect Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Finishing Walls (AREA)
Abstract
The utility model discloses a building energy-saving external wall heat-insulation decorative plate structure, which comprises an ecological resin plate; ecological resin board: the front surface of the heat-insulation board is provided with a PET (polyethylene terephthalate) transparent anti-aging film layer, the rear surface of an ecological resin board is provided with a asbestos fiber board, the rear surface of the asbestos fiber board is provided with an extruded polystyrene board, the rear surface of the extruded polystyrene board is provided with a rock wool board, the rear surface of the rock wool board is provided with a hard polyurethane board, the rear surface of the hard polyurethane board is provided with an aluminum-zinc-plated steel plate, the ecological resin board, the asbestos fiber board, the inorganic resin board, the extruded polystyrene board, the rock wool board, the outer side surfaces of the hard polyurethane board and the aluminum-zinc-plated steel plate are fixedly connected with the inner wall surface of an outer frame, and the rear surface of the ecological resin board is provided with uniformly distributed connecting columns.
Description
Technical Field
The utility model relates to an architectural decoration technical field specifically is a building energy conservation external wall insulation decorative board structure.
Background
The outer wall decorative board is a novel building outer wall decoration and heat preservation integrated material developed in recent years, and is mainly applied to outer wall decoration and energy-saving transformation of various buildings such as office buildings and villas of gymnasiums, libraries, schools and hospitals, and the like, and has the main functions of building decoration, heat preservation, energy conservation, heat insulation, sound insulation, water resistance and mildew resistance, the building outer wall, the vehicle and ship outer wall and the like are provided with heat preservation decorative structures which are environment-friendly and have energy-saving functions, and the outer wall heat preservation decorative board structure in the prior art is popularized to daily building outer decorative engineering.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome current defect, provide a building energy-conserving external wall insulation decorative board structure, make the overall structure of heated board more firm, the compressive capacity of reinforcing heated board, dampproofing fire-retardant syllable-dividing, it is effectual to keep warm, can effectively solve the problem in the background art.
In order to achieve the above object, the utility model provides a following technical scheme: a building energy-saving outer wall heat-insulating decorative plate structure comprises an ecological resin plate;
ecological resin board: the front surface of the ecological resin plate is provided with a PET transparent anti-aging film layer, the rear surface of the ecological resin plate is provided with a asbestos fiber plate, the rear surface of the asbestos fiber plate is provided with an inorganic resin plate, the rear surface of the inorganic resin plate is provided with an extruded polystyrene board, the rear surface of the extruded polystyrene board is provided with a rock wool plate, the rear surface of the rock wool plate is provided with a hard polyurethane plate, the rear surface of the hard polyurethane plate is provided with an aluminum-zinc-plated steel plate, the ecological resin plate, the asbestos fiber plate, the inorganic resin plate, the extruded polystyrene board, the rock wool plate, the hard polyurethane plate and the aluminum-zinc-plated steel plate are fixedly connected with the inner wall surface of an outer frame, the rear surface of the ecological resin plate is provided with uniformly distributed connecting columns, the connecting columns sequentially penetrate through the asbestos fiber plate, the inorganic resin plate, the extruded polystyrene board, the rock wool plate, the hard polyurethane plate and the aluminum-zinc-plated steel plate, and the rear ends of the connecting columns are fixedly connected with the upper surface of the aluminum-zinc-plated steel plate, make the overall structure of heated board more firm, the compressive capacity of reinforcing heated board, dampproofing fire-retardant syllable-dividing, it is effectual to keep warm.
Further, the rear surface of asbestos fiberboard, the front surface of inorganic resin board, the rear surface of extruded polystyrene board, the front surface of rock wool board, the rear surface of stereoplasm polyurethane board and the front surface of aluminized zinc steel sheet all are equipped with evenly distributed's horizontal bar groove, the horizontal bar groove of asbestos fiberboard rear surface and the horizontal bar groove dislocation set of inorganic resin board front surface, the horizontal bar groove of extruded polystyrene board rear surface and the horizontal bar groove dislocation set of rock wool board front surface, the horizontal bar groove of stereoplasm polyurethane board rear surface and the horizontal bar groove dislocation set of aluminized zinc steel sheet front surface, the compressive capacity of reinforcing heated board.
Further, the rear surface of ecological resin board, the front surface of asbestos fiberboard, the rear surface of inorganic resin board, the front surface of extruded polystyrene board, the front surface of stereoplasm polyurethane board and the rear surface of rock wool board all are equipped with evenly distributed's vertical bar groove, the vertical bar groove of ecological resin board rear surface and the vertical bar groove dislocation set of asbestos fiberboard front surface, the vertical bar groove of inorganic resin board rear surface and the vertical bar groove dislocation set of extruded polystyrene board front surface, the vertical bar groove of stereoplasm polyurethane board front surface and the vertical bar groove dislocation set of rock wool board rear surface, the compressive capacity of reinforcing heated board.
Further, the left surface of outline is equipped with the bar card strip, and the right flank of outline is equipped with the bar draw-in groove, and bar card strip and bar draw-in groove correspond the setting, and the seamless connection between the heated board of being convenient for is assembled.
Furthermore, the rear surface symmetry of aluminized zinc steel sheet is equipped with the U type and hangs the board, and two screws of position symmetry are all installed to the U type on hanging the vertical plate body of board rear end, and the mounting of being convenient for heated board prevents that the heated board from being blown down by the wind.
Compared with the prior art, the beneficial effects of the utility model are that: this building energy-saving outer wall heat preservation decorative board structure has following benefit:
1. evenly distributed's spliced pole can make the aluminium-zinc-plated steel sheet, the ecological resin board, the asbestos fiberboard, inorganic resin board, the extrusion molding polyphenyl board, the connection between stereoplasm polyurethane board and the rock wool board is more firm, the compressive capacity of reinforcing heated board, horizontal bar groove can make asbestos fiberboard and inorganic resin board junction, extrusion molding polyphenyl board and rock wool board junction and stereoplasm polyurethane board and aluminium-zinc-plated steel sheet junction dislocation joint, vertical bar groove can make ecological resin board and asbestos fiberboard junction, inorganic resin board and extrusion molding polyphenyl board junction and stereoplasm polyurethane board and rock wool board junction dislocation joint, make the overall structure of heated board more firm, further strengthen the compressive capacity of heated board.
2. The transparent ageing resistance rete of PET can strengthen the ageing resistance on insulation board surface, and ecological resin board gives sound insulation, shocks resistance, the resistance to deformation, and the sound insulation and the shock resistance effect of reinforcing insulation board, the erosion of water molecule to the insulation board in the reducible air of asbestos fiber board plays dampproofing effect, and inorganic resin board can play the fire resistance effect, and extruded polystyrene board, stereoplasm polyurethane board and the compound heat preservation effect that increases of rock wool board three-layer, and the aluminized zinc steel sheet can increase thermal-insulated effect once more, and it is effectual to keep warm.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a rear view of the structure of the present invention;
fig. 3 is the schematic view of the internal cutting structure of the utility model.
In the figure: the plastic steel plate comprises an outer frame 1, strip-shaped clamping strips 2, strip-shaped clamping grooves 3, a PET (polyethylene terephthalate) transparent anti-aging film layer 4, a U-shaped suspension plate 5, screws 6, an aluminum-zinc-plated steel plate 7, an ecological resin plate 8, a asbestos fiber plate 9, an inorganic resin plate 10, a connecting column 11, an extruded polystyrene plate 12, a hard polyurethane plate 13, a rock wool plate 14, a vertical strip groove 15 and a horizontal strip groove 16.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, 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. 1-3, the present invention provides a technical solution: a building energy-saving outer wall heat-insulating decorative plate structure comprises an ecological resin plate 8;
ecological resin plate 8: the front surface of the ecological resin plate is provided with a PET transparent anti-aging film layer 4, the rear surface of an ecological resin plate 8 is provided with a asbestos fiber plate 9, the rear surface of the asbestos fiber plate 9 is provided with an inorganic resin plate 10, the rear surface of the inorganic resin plate 10 is provided with an extruded polystyrene plate 12, the rear surface of the extruded polystyrene plate 12 is provided with a rock wool plate 14, the rear surface of the rock wool plate 14 is provided with a hard polyurethane plate 13, the rear surface of the hard polyurethane plate 13 is provided with an aluminum-zinc-plated steel plate 7, the ecological resin plate 8, the asbestos fiber plate 9, the inorganic resin plate 10, the extruded polystyrene plate 12, the rock wool plate 14, the hard polyurethane plate 13 and the aluminum-zinc-plated steel plate 7 are fixedly connected with the inner wall surface of an outer frame 1, the rear surface of the ecological resin plate 8 is provided with uniformly distributed connecting columns 11, and the connecting columns 11 sequentially penetrate through the asbestos fiber plate 9, the inorganic resin plate 10, the extruded polystyrene plate 12, the rock wool plate 14, the hard polyurethane plate 13 and the aluminum-zinc-plated steel plate 7, the rear ends of the connecting columns 11 are fixedly connected with the upper surface of the aluminum-zinc-plated steel plate 7, the uniformly distributed connecting columns 11 can ensure that the aluminum-zinc-plated steel plate 7, the ecological resin plate 8, the asbestos fiber plate 9, the inorganic resin plate 10 and the extruded polystyrene board 12, the connection between stereoplasm polyurethane board 13 and the rock wool board 14 is more firm, the compressive capacity of reinforcing heated board, the ageing resistance on PET transparent ageing resistance rete 4 can strengthen the heated board surface, ecological resin board 8 gives sound insulation, shock resistance, the resistance to deformation, strengthen the syllable-dividing and the shock resistance effect of heated board, the erosion of water molecule to the heated board in the reducible air of rock wool fiberboard 9, play the dampproofing effect, inorganic resin board 10 can play the fire resistance effect, extruded polystyrene board 12, stereoplasm polyurethane board 13 and the 14 three-layer composite increase heat preservation effect of rock wool board, aluminize zinc steel sheet 7 can increase thermal-insulated effect once more, it is effectual to keep warm, outline 1 can improve the connection steadiness between each board.
Wherein: the rear surface of the asbestos fiber board 9, the front surface of the inorganic resin board 10, the rear surface of the extruded polystyrene board 12, the front surface of the asbestos board 14, the rear surface of the hard polyurethane board 13 and the front surface of the aluminum-zinc-plated steel plate 7 are all provided with transverse strip-shaped grooves 16 which are uniformly distributed, horizontal bar groove 16 of asbestos fiberboard 9 rear surface and the horizontal bar groove 16 dislocation set of inorganic resin board 10 front surface, the horizontal bar groove 16 of extruded polystyrene board 12 rear surface and the horizontal bar groove 16 dislocation set of rock wool board 14 front surface, the horizontal bar groove 16 of stereoplasm polyurethane board 13 rear surface and the horizontal bar groove 16 dislocation set of aluminized zinc steel sheet 7 front surface, horizontal bar groove 16 can make asbestos fiberboard 9 and the 10 junction of inorganic resin board, extruded polystyrene board 12 and rock wool board 14 junction and stereoplasm polyurethane board 13 and the 7 junction dislocation joint of aluminized zinc steel sheet, make the overall structure of heated board more firm.
Wherein: the rear surface of the ecological resin plate 8, the front surface of the asbestos fiber plate 9, the rear surface of the inorganic resin plate 10, the front surface of the extruded polystyrene board 12, the front surface of the hard polyurethane plate 13 and the rear surface of the rock wool plate 14 are all provided with vertical strip-shaped grooves 15 which are uniformly distributed, the vertical strip-shaped grooves 15 on the rear surface of the ecological resin plate 8 and the vertical strip-shaped grooves 15 on the front surface of the asbestos fiber plate 9 are arranged in a staggered manner, the vertical strip-shaped grooves 15 on the rear surface of the inorganic resin plate 10 and the vertical strip-shaped grooves 15 on the front surface of the extruded polystyrene board 12 are arranged in a staggered manner, the vertical strip-shaped grooves 15 on the front surface of the hard polyurethane plate 13 and the vertical strip-shaped grooves 15 on the rear surface of the rock wool plate 14 are arranged in a staggered manner, the vertical strip-shaped grooves 15 can ensure that the joint of the ecological resin plate 8 and the asbestos fiber plate 9, the joint of the inorganic resin plate 10 and the extruded polystyrene board 12 and the joint of the hard polyurethane plate 13 and the rock wool plate 14 are clamped in a staggered manner, the overall structure of the insulation board is firmer.
Wherein: the left surface of outline 1 is equipped with bar card strip 2, and the right flank of outline 1 is equipped with bar draw-in groove 3, and bar card strip 2 corresponds the setting with bar draw-in groove 3, and the seamless connection between the heated board of being convenient for of bar card strip 2 and bar draw-in groove 3 is assembled.
Wherein: the rear surface symmetry of aluminized zinc steel sheet 7 is equipped with the U type and hangs board 5, and the U type all installs two screws 6 of position symmetry on hanging the vertical plate body of board 5 rear end, and the U type hangs the suspension installation of board 5 heated board of being convenient for, screws up screw 6 after the suspension installation, prevents that the heated board from being blown down by the wind.
When in use: the U-shaped suspension plate 5 is convenient for suspension installation of the heat preservation plate, the screws 6 are screwed after suspension installation to prevent the heat preservation plate from being blown down by wind, the strip-shaped clamping strips 2 and the strip-shaped clamping grooves 3 are convenient for seamless connection and assembly between the heat preservation plates, the uniformly distributed connecting columns 11 can ensure that the aluminum-zinc-plated steel plate 7, the ecological resin plate 8, the asbestos fiber plate 9, the inorganic resin plate 10, the extruded polystyrene plate 12, the hard polyurethane plate 13 and the rock wool plate 14 are connected more stably, the pressure resistance of the heat preservation plate is enhanced, the transverse strip-shaped grooves 16 can ensure that the connection between the asbestos fiber plate 9 and the inorganic resin plate 10, the connection between the extruded polystyrene plate 12 and the rock wool plate 14 and the connection between the hard polyurethane plate 13 and the aluminum-zinc-plated steel plate 7 are clamped in a staggered manner, the vertical strip-shaped grooves 15 can ensure that the connection between the ecological resin plate 8 and the asbestos fiber plate 9, the connection between the inorganic resin plate 10 and the extruded polystyrene plate 12 and the connection between the hard polyurethane plate 13 and the rock wool plate 14 are clamped in a staggered manner, make the overall structure of heated board more firm, further strengthen the compressive capacity of heated board, the ageing resistance on PET transparent ageing resistance rete 4 can strengthen the heated board surface, ecological resin board 8 gives sound insulation, shock resistance, the resistance to deformation, strengthen the syllable-dividing and the shock-resistant effect of heated board, the erosion of water molecule to the heated board in the reducible air of asbestos fiber board 9, play dampproofing effect, inorganic resin board 10 can play the fire resistance effect, extrusion molding polyphenyl board 12, stereoplasm polyurethane board 13 and the 14 three-layer composite increase heat preservation effect of rock wool board, aluminize-Zn steel 7 can increase thermal-insulated effect once more, it is effectual to keep warm.
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 (5)
1. The utility model provides a building energy-saving outer wall insulation decorative board structure which characterized in that: comprises an ecological resin plate (8);
ecological resin plate (8): the front surface of the ecological resin plate is provided with a PET transparent anti-aging film layer (4), the rear surface of an ecological resin plate (8) is provided with a asbestos fiber plate (9), the rear surface of the asbestos fiber plate (9) is provided with an inorganic resin plate (10), the rear surface of the inorganic resin plate (10) is provided with an extruded polystyrene board (12), the rear surface of the extruded polystyrene board (12) is provided with a rock wool plate (14), the rear surface of the rock wool plate (14) is provided with a hard polyurethane plate (13), the rear surface of the hard polyurethane plate (13) is provided with an aluminum-zinc plated steel plate (7), the ecological resin plate (8), the asbestos fiber plate (9), the inorganic resin plate (10), the extruded polystyrene board (12), the rock wool plate (14), the outer side surfaces of the hard polyurethane plate (13) and the aluminum-zinc plated steel plate (7) are fixedly connected with the inner wall surface of an outer frame (1), the rear surface of the ecological resin plate (8) is provided with connecting columns (11) which are uniformly distributed, the connecting columns (11) sequentially penetrate through the asbestos fiber board (9), the inorganic resin board (10), the extruded polystyrene board (12), the rock wool board (14), the hard polyurethane board (13) and the aluminum-zinc-plated steel plate (7), and the rear ends of the connecting columns (11) are fixedly connected with the upper surface of the aluminum-zinc-plated steel plate (7).
2. The building energy-saving external wall heat-insulating decorative plate structure according to claim 1, characterized in that: the rear surface of asbestos fiberboard (9), the front surface of inorganic resin board (10), the rear surface of extruded polystyrene board (12), the front surface of rock wool board (14), the rear surface of stereoplasm polyurethane board (13) and the front surface of aluminized zinc steel board (7) all are equipped with evenly distributed's horizontal bar groove (16), horizontal bar groove (16) of rock wool fiberboard (9) rear surface and the horizontal bar groove (16) dislocation set of inorganic resin board (10) front surface, horizontal bar groove (16) of extruded polystyrene board (12) rear surface and the horizontal bar groove (16) dislocation set of rock wool board (14) front surface, the horizontal bar groove (16) of stereoplasm polyurethane board (13) rear surface and the horizontal bar groove (16) dislocation set of aluminized zinc steel board (7) front surface.
3. The building energy-saving external wall heat-insulating decorative plate structure according to claim 1, characterized in that: the back surface of ecological resin board (8), the front surface of asbestos fiberboard (9), the rear surface of inorganic resin board (10), the front surface of extrusion molding polyphenyl board (12), the front surface of stereoplasm polyurethane board (13) and the rear surface of rock wool board (14) all are equipped with evenly distributed's vertical bar groove (15), vertical bar groove (15) of ecological resin board (8) rear surface and vertical bar groove (15) dislocation set of asbestos fiberboard (9) front surface, vertical bar groove (15) dislocation set of vertical bar groove (15) and extrusion molding polyphenyl board (12) front surface of inorganic resin board (10) rear surface, vertical bar groove (15) dislocation set of stereoplasm polyurethane board (13) front surface and vertical bar groove (15) dislocation set of rock wool board (14) rear surface.
4. The building energy-saving external wall heat-insulating decorative plate structure according to claim 1, characterized in that: the left surface of outline (1) is equipped with bar card strip (2), and the right flank of outline (1) is equipped with bar draw-in groove (3), and bar card strip (2) and bar draw-in groove (3) correspond the setting.
5. The building energy-saving external wall heat-insulating decorative plate structure according to claim 1, characterized in that: the rear surface symmetry of aluminizing zinc steel sheet (7) is equipped with the U type and hangs board (5), and the U type hangs all to install two screws (6) of symmetry in position on the vertical plate body of board (5) rear end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120212817.0U CN215212023U (en) | 2021-01-26 | 2021-01-26 | Building energy-saving external wall heat-insulation decorative plate structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120212817.0U CN215212023U (en) | 2021-01-26 | 2021-01-26 | Building energy-saving external wall heat-insulation decorative plate structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215212023U true CN215212023U (en) | 2021-12-17 |
Family
ID=79438662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120212817.0U Expired - Fee Related CN215212023U (en) | 2021-01-26 | 2021-01-26 | Building energy-saving external wall heat-insulation decorative plate structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215212023U (en) |
-
2021
- 2021-01-26 CN CN202120212817.0U patent/CN215212023U/en not_active Expired - Fee Related
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| 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: 20211217 |
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| CF01 | Termination of patent right due to non-payment of annual fee |