CN112747515A - Ice making device - Google Patents
Ice making device Download PDFInfo
- Publication number
- CN112747515A CN112747515A CN202011155130.4A CN202011155130A CN112747515A CN 112747515 A CN112747515 A CN 112747515A CN 202011155130 A CN202011155130 A CN 202011155130A CN 112747515 A CN112747515 A CN 112747515A
- Authority
- CN
- China
- Prior art keywords
- ice
- making tray
- tray
- making
- ice making
- 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.)
- Granted
Links
- 229910052751 metal Inorganic materials 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 14
- 229920005989 resin Polymers 0.000 claims abstract description 14
- 239000011347 resin Substances 0.000 claims abstract description 14
- 239000011231 conductive filler Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 5
- 210000000078 claw Anatomy 0.000 claims description 29
- 238000005192 partition Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229920005992 thermoplastic resin Polymers 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25C—PRODUCING, WORKING OR HANDLING ICE
- F25C1/00—Producing ice
- F25C1/22—Construction of moulds; Filling devices for moulds
- F25C1/24—Construction of moulds; Filling devices for moulds for refrigerators, e.g. freezing trays
- F25C1/243—Moulds made of plastics e.g. silicone
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Production, Working, Storing, Or Distribution Of Ice (AREA)
- Table Equipment (AREA)
Abstract
The present invention provides an ice making device having an ice making tray made of a resin material, and a fitting that contacts at least a part of an outer surface of the ice making tray through an inner surface thereof, and is composed of a resin containing a metal or a thermally conductive filler. The ice making device is easy to de-ice, the heat release performance is improved, and the ice making time is shortened.
Description
Technical Field
The present invention relates to an ice making device, and more particularly, to an ice making device applied to a refrigerator.
Background
The ice-making tray used in the ice-making device is made of a resin such as a thermoplastic resin. However, since the resin has low thermal conductivity, it takes time to cool the water. Then, in patent document 1, it is attempted to shorten the ice making time by forming the bottom wall with a metal plate made of metal and forming the remaining side wall with a thermoplastic resin.
(Prior art document)
(patent document)
Patent document 1: japanese patent laid-open publication No. 2005-127604
However, if the bottom wall is made of a metal material, it cannot be bent, and it is difficult to de-ice after making ice. Further, since the side wall is still made of a resin material, heat is not sufficiently released.
In view of the above, there is a need for an improved ice making apparatus to solve the above problems.
Disclosure of Invention
The invention aims to provide an ice making device which has high heat radiation performance, short ice making time and easy ice removal.
To achieve the above object, the present invention provides an ice making device having an ice making tray made of a resin material, and a fitting contacting at least a part of an outer surface of the ice making tray through an inner surface thereof, and the fitting is composed of a resin containing a metal or a thermally conductive filler.
As a further improvement of the present invention, a magnet is embedded inside the ice-making tray to increase a contact pressure of a contact area of the ice-making tray and the attachment.
As a further improvement of the present invention, a claw portion that engages with the fitting is provided at an end portion of the ice-making tray to increase a contact pressure of a contact area of the ice-making tray and the fitting.
As a further improvement of the present invention, the ice making device further has an ice releasing mechanism for twisting the ice making tray to drop the ice in the ice making tray, and the force at the magnet or the claw portion is resisted by a twisting force at the ice releasing mechanism, and the contact of the ice making tray and the attachment at the contact area is released.
As a further improvement of the present invention, when the ice-making tray twisted by the ice-shedding mechanism is returned to the original state, the contact area of the ice-making tray and the attachment is brought back into contact, and the contact pressure of the contact area is increased by the force at the magnet or the claw portion.
As a further improvement of the present invention, the ice-making tray has a first rotating shaft rod and a second rotating shaft rod, the ice-making tray is rotated by an ice-shedding mechanism which is mounted at the first rotating shaft rod and performs a rotating action, and the second rotating shaft rod is freely rotated along with the rotation of the first rotating shaft rod.
As a further improvement of the present invention, the claw portion is provided on a surface on the ice-making tray side.
As a further improvement of the present invention, the fitting and the ice-making tray may be provided separately.
As a further development of the invention, the ice tray has a partition and is inserted with a form fit into the fitting.
As a further improvement of the present invention, an inner surface of the fitting is in contact with an outer surface of the ice-making tray.
The invention has the beneficial effects that: the ice making device of the invention is easy to de-ice, improves the heat release performance and shortens the ice making time.
Drawings
Fig. 1 is a perspective view of an ice-making device of the present invention.
Fig. 2 is a sectional view of the ice making device shown in fig. 1 taken along line a-a.
Fig. 3(a) is a perspective view of an ice-making tray of the ice-making device shown in fig. 1.
Fig. 3(b) is a perspective view of the accessories of the ice-making device shown in fig. 1.
Fig. 4 is a sectional view of an ice tray with a magnet embedded therein according to the present invention.
Fig. 5(a) is a schematic sectional view of an ice-making tray provided with a claw portion according to the present invention.
Fig. 5(b) is a side view schematically showing the ice making tray provided with the claw portion according to the present invention.
FIG. 5(c) is a side view schematically showing a fitting of the present invention having a hole portion to be engaged with a claw portion.
Fig. 6 is a perspective view illustrating the ice tray twisted for deicing.
Fig. 7 shows a schematic view of an ice-making tray twisted for deicing and accessories linked with the ice-making tray.
Fig. 8 is a sectional view of another embodiment of the ice making device of the present invention.
DESCRIPTION OF SYMBOLS IN THE DRAWINGS
101 fittings
103 ice making tray
105 partition
107 trench
109 magnet
111 claw part
113 first rotary shaft
115 second rotating shaft rod
117 holes
119 stop part
121 claw part
Detailed Description
The present invention will be described in detail below with reference to embodiments shown in the drawings. The present invention is not limited to the embodiment, and structural, methodological, or functional changes made by one of ordinary skill in the art according to the embodiment are included in the scope of the present invention.
(description of Ice-making device)
Fig. 1 is a perspective view of an ice making device of the present invention, fig. 2 is a sectional view taken along line a-a of fig. 1, and fig. 3(a) to 3(b) are perspective views of an ice making tray 103 and an accessory 101 of the ice making device of the present invention, which will be described with reference to fig. 1 to 3.
As shown in fig. 1, the ice-making tray 103 has a partition 105 and is fitted therein in conformity with the shape of the fitting 101. The ice-making tray 103 is made of a resin such as a thermoplastic resin. The ice tray 103 is made of an elastically deformable material.
The ice-making tray 103 is preferably divided into a plurality of cells by partitions 105; the partitions 105 are preferably grooved to distribute water throughout.
The fitting 101 is preferably a resin containing a metal or a thermally conductive filler in order to enhance thermal conductivity. The metal is preferably magnetic, and alloys of iron, nickel, cobalt, and the like may be used. On the other hand, metals having no magnetic properties, such as aluminum, are also possible.
The thermally conductive filler is a substance having high thermal conductivity such as boron nitride and alumina. Mixing a thermally conductive filler into a resin can increase thermal conductivity. The thermally conductive filler and the resin are not magnetic, but can be used as the fitting 101.
As shown in fig. 2, the inner surface of the fitting 101 contacts the outer surface of the ice making tray 103. Since not only the bottom surface but also the side surfaces are in contact with each other, the contact area can be increased, the thermal conductivity can be increased, and the ice making time can be shortened.
As shown in fig. 3(a) and 3(b), the accessory 101 and the ice-making tray 103 are detachably provided. The grooves 107 of the accessories 101 are installed in match with the shape of the partitions 105 of the ice-making tray 103, so that the contact area is increased and the ice-making time can be shortened.
The ice-making device composed of the accessory 101 and the ice-making tray 103 is automatically or manually filled with water in a state of being put in the refrigerator. Water injected from one or more locations passes through the grooves of the partitions 105 and ice is formed in all of the multiple divided sections.
By the metal or the heat conductive filler of the fitting 101 contacting the ice making tray 103, heat radiating performance can be improved and ice making time can be shortened. Further, since the ice making tray 103 is made of resin, it is possible to elastically deform and twist the ice-shedding.
(Embedded magnet Ice tray)
Fig. 4 is a sectional view of an ice tray in which a magnet is embedded according to an embodiment of the present invention. An ice tray with a magnet embedded therein according to an embodiment of the present invention will be described with reference to fig. 4.
As shown in fig. 4, the magnet 109 is embedded inside the ice making tray 103. When the attachment 101 is magnetic when the magnet 109 is embedded in the ice tray 103, the contact pressure of the contact area between the ice tray 103 and the attachment 101 can be increased. In order to increase the contact pressure, it is preferable that the magnet 109 be embedded in the bottom surface of the ice-making tray 103.
In the case where the attachment 101 is made of metal having magnetism, the contact pressure can be increased by mounting the magnet 109 on the ice making tray 103, and the increase in the contact pressure can improve the thermal conductivity.
(Ice tray with claw)
Fig. 5(a) is a sectional view of an ice tray provided with a claw portion according to the present invention, fig. 5(b) is a side view of the ice tray provided with the claw portion, fig. 5(c) is a side view of a fitting provided with a hole portion to be engaged with the claw portion, and an ice tray 103 provided with a claw portion to be engaged with the fitting 101 will be described below with reference to fig. 5(a) to 5 (c).
As shown in fig. 5(a), the ice-making tray 103 of the present invention is provided with a claw portion 111, and as shown in fig. 5(b), the claw portion 111 is preferably provided on a surface on the side of the ice-making tray 103. As shown in fig. 5(c), the metal fitting 101 is provided with a hole 117 that engages with the claw portion 111.
When a claw portion that engages with the metal fitting 101 is provided at an end portion of the ice tray 103, the contact pressure of the contact area between the ice tray 103 and the metal fitting 101 can be increased, and the thermal conductivity can be further improved by the increase in the contact pressure.
(Ice-removing action)
Fig. 6 is a schematic view of an ice-making tray twisted for deicing. Fig. 7 is a view of an ice-making tray twisted for ice shedding and accessories linked with the ice-making tray. The deicing operation after ice making will be described with reference to fig. 4 to 7.
As shown in fig. 6, the ice-making tray 103 has a first rotating shaft rod 113 and a second rotating shaft rod 115 for automatic ice-shedding. The ice-making tray 103 is rotated by a deicing mechanism such as a motor mounted at the first rotating shaft 113 to perform a rotating action, and the second rotating shaft 115 is freely rotated according to the rotation of the first rotating shaft 113.
The ice making tray 103 has a stopper 119, and the ice making tray 103 is twisted by the stopper 119 hitting a part of the ice releasing mechanism and stopping the rotation. After the ice is made, the ice tray 103 is rotated, and the ice tray 103 is continuously rotated from a state where the ice tray 103 is vertical to twist the ice tray 103 and the partition 105, thereby removing the ice, and the removed ice drops and is collected in a tray (not shown) of the refrigerator.
As shown in fig. 7, the ice-making tray 103 rotates together with the attachment 101, and the ice-making tray 103 is fixed by a claw portion 121 provided on the attachment 101. The first rotating shaft rod 113 and the second rotating shaft rod 115 rotate, but the fitting 101 rotates simultaneously since it is fixed by the claw portion 121. When the ice making tray 103 is in a vertically erected state, the stopper 119 hits a part of the ice releasing mechanism, thereby preventing the rotation of the ice making tray 103 and the attachment 101.
The ice-making tray 103 is twisted to disengage the ice-making tray 103 from the fitting 101. In the case where there is the magnet 109 or the claw portion 111 at the ice making tray 103, the force at the magnet 109 or the claw portion 111 is resisted by the torsional force of the ice ejecting mechanism, and the contact in the contact area of the ice making tray 103 and the metal fitting 101 is released.
When the ice-making tray 103 is twisted, the contact of the ice-making tray 103 with the accessory 101 is released. Thus, the fitting 101 does not require deformability.
In the case of the ice-making tray 103 shown in fig. 7, the magnet 109 is preferably located at a position away from the attachment 101. That is, when the magnets 109 are located at the four corners of the ice tray 103, they are preferably located on the first rotating shaft bar 113 side in fig. 7, below the twisted partition 105 on the upper side, and are located on the near end side in fig. 4 and on the right side of the first rotating shaft bar 113.
Also, in the case where the claw portion 111 is at four corners of the ice making tray 103, it is preferably located on one side of the first rotating shaft rod 113, on the twisted side of the upper side in fig. 7, and on the proximal end in fig. 5 (b).
When the ice-making tray 103 twisted by the ice-shedding mechanism is returned to the original state, that is, when the ice-making tray 103 is returned to the horizontal position by the reverse rotation, the contact area of the ice-making tray 103 and the attachment 101 is restored to contact.
Here, when the magnet 109 or the claw portion 111 is provided, the contact pressure in the contact region can be further increased.
The claw portion 111 is elastically deformed and restores contact between the ice-making tray 103 and the accessory 101 when the twist of the ice-making tray 103 is returned. Further, the magnet 109 is attracted again to the attachment 101 when the ice making tray 103 is twisted back, and the contact of the ice making tray 103 with the attachment 101 is restored. The contact of the ice making tray 103 with the attachment 101 is restored like this, and the contact pressure is increased again.
(Accessory in another embodiment of Ice maker)
Fig. 8 is a sectional view of another embodiment of the ice making device of the present invention, and an accessory 101 according to another embodiment of the present invention will be described with reference to fig. 8.
As shown in fig. 8, the fitting 101 may also be devoid of grooves 107. That is, at least a part of the side surface and the bottom surface of the fitting 101 may have a contact area on the inner side and the outer side of the ice tray 103. By doing so, it is also possible to increase the thermal conductivity and reduce the ice making time.
The ice-making device of the present invention is as easy as the conventional ice-making device to de-ice; further, the heat release performance of the ice making device is improved and the ice making time is shortened.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.
Claims (10)
1. An ice making device characterized by having an ice making tray made of a resin material, and a fitting that contacts at least a part of an outer surface of the ice making tray through an inner surface thereof, and the fitting is composed of a resin containing a metal or a thermally conductive filler.
2. An ice making apparatus as claimed in claim 1, wherein: a magnet is embedded inside the ice-making tray to increase a contact pressure of a contact area of the ice-making tray and the fitting.
3. An ice making apparatus as claimed in claim 2, wherein: and a claw part clamped with the accessory is arranged at the end part of the ice-making tray so as to increase the contact pressure of the contact area of the ice-making tray and the accessory.
4. An ice making apparatus as claimed in claim 3, wherein: the ice making device further has an ice releasing mechanism for twisting the ice making tray to drop the ice in the ice making tray, and the force at the magnet or the claw portion is resisted by a twisting force at the ice releasing mechanism, and the contact between the ice making tray and the accessory at the contact area is released.
5. An ice making apparatus as claimed in claim 4, wherein: when the ice-making tray twisted by the ice-shedding mechanism is returned to an original state, the contact area of the ice-making tray and the attachment is brought back into contact, and the contact pressure of the contact area is increased by the force at the magnet or the claw portion.
6. An ice making apparatus as claimed in claim 5, wherein: the ice-making tray has a first rotating shaft and a second rotating shaft, the ice-making tray is rotated by an ice-shedding mechanism which is installed at the first rotating shaft and performs a rotating action, and the second rotating shaft is freely rotated along with the rotation of the first rotating shaft.
7. An ice making apparatus as claimed in claim 3, wherein: the claw portion is provided on a surface of one side of the ice-making tray.
8. An ice making apparatus as claimed in claim 5, wherein: the accessory and the ice-making tray are detachably provided.
9. An ice making apparatus as claimed in any one of claims 1 to 8, wherein: the ice-making tray has a partition and is fittingly inserted into the fitting.
10. An ice making apparatus as claimed in claim 9, wherein: the inner surface of the fitting is in contact with the outer surface of the ice-making tray.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019-196554 | 2019-10-29 | ||
| JP2019196554A JP2021071213A (en) | 2019-10-29 | 2019-10-29 | Ice making device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112747515A true CN112747515A (en) | 2021-05-04 |
| CN112747515B CN112747515B (en) | 2023-11-03 |
Family
ID=75648732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011155130.4A Active CN112747515B (en) | 2019-10-29 | 2020-10-26 | Ice making device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2021071213A (en) |
| CN (1) | CN112747515B (en) |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB657353A (en) * | 1948-02-14 | 1951-09-19 | Gen Motors Corp | Improved ice-making tray |
| GB682379A (en) * | 1951-05-29 | 1952-11-05 | Plastray Products Birmingham L | Improvements in and relating to ice forming cups or the like for use in refrigerators |
| DE2550792A1 (en) * | 1975-11-10 | 1977-05-18 | Alfons Hof | Ice cube making mould tray - has seats for flexible beakers containing water for making ice |
| JPH0719685A (en) * | 1993-07-07 | 1995-01-20 | Matsushita Refrig Co Ltd | Automatic ice-making equipment |
| JPH07305931A (en) * | 1994-05-12 | 1995-11-21 | Mitsubishi Electric Corp | Icemaking tray and automatic icemaker |
| JP2001147060A (en) * | 1999-11-18 | 2001-05-29 | Matsushita Refrig Co Ltd | Automatic ice-making machine |
| JP2002364960A (en) * | 2001-06-11 | 2002-12-18 | Matsushita Refrig Co Ltd | Ice making pan |
| KR20040085526A (en) * | 2003-03-31 | 2004-10-08 | 삼성전자주식회사 | Apparatus for making ice |
| CN2886464Y (en) * | 2006-04-19 | 2007-04-04 | 刘道红 | Ice making device |
| CN101206092A (en) * | 2006-12-14 | 2008-06-25 | 日立空调·家用电器株式会社 | Refrigeratory |
| JP2008151475A (en) * | 2006-12-20 | 2008-07-03 | Matsushita Electric Ind Co Ltd | Ice tray |
| JP2011237077A (en) * | 2010-05-07 | 2011-11-24 | Toshiba Corp | Automatic ice making device |
| CN102455094A (en) * | 2010-10-28 | 2012-05-16 | Lg电子株式会社 | Refrigerator including ice maker |
| CN202470566U (en) * | 2012-01-17 | 2012-10-03 | 合肥美的荣事达电冰箱有限公司 | Refrigerator and ice-making component |
| CN102933925A (en) * | 2010-06-10 | 2013-02-13 | Lg电子株式会社 | Refrigerator with ice maker |
| US20150241103A1 (en) * | 2014-02-24 | 2015-08-27 | Whirlpool Corporation | Clad metal ice cube tray |
| CN110050165A (en) * | 2016-12-16 | 2019-07-23 | 三菱电机株式会社 | Ice maker and refrigerator |
-
2019
- 2019-10-29 JP JP2019196554A patent/JP2021071213A/en active Pending
-
2020
- 2020-10-26 CN CN202011155130.4A patent/CN112747515B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB657353A (en) * | 1948-02-14 | 1951-09-19 | Gen Motors Corp | Improved ice-making tray |
| GB682379A (en) * | 1951-05-29 | 1952-11-05 | Plastray Products Birmingham L | Improvements in and relating to ice forming cups or the like for use in refrigerators |
| DE2550792A1 (en) * | 1975-11-10 | 1977-05-18 | Alfons Hof | Ice cube making mould tray - has seats for flexible beakers containing water for making ice |
| JPH0719685A (en) * | 1993-07-07 | 1995-01-20 | Matsushita Refrig Co Ltd | Automatic ice-making equipment |
| JPH07305931A (en) * | 1994-05-12 | 1995-11-21 | Mitsubishi Electric Corp | Icemaking tray and automatic icemaker |
| JP2001147060A (en) * | 1999-11-18 | 2001-05-29 | Matsushita Refrig Co Ltd | Automatic ice-making machine |
| JP2002364960A (en) * | 2001-06-11 | 2002-12-18 | Matsushita Refrig Co Ltd | Ice making pan |
| KR20040085526A (en) * | 2003-03-31 | 2004-10-08 | 삼성전자주식회사 | Apparatus for making ice |
| CN2886464Y (en) * | 2006-04-19 | 2007-04-04 | 刘道红 | Ice making device |
| CN101206092A (en) * | 2006-12-14 | 2008-06-25 | 日立空调·家用电器株式会社 | Refrigeratory |
| JP2008151475A (en) * | 2006-12-20 | 2008-07-03 | Matsushita Electric Ind Co Ltd | Ice tray |
| JP2011237077A (en) * | 2010-05-07 | 2011-11-24 | Toshiba Corp | Automatic ice making device |
| CN102933925A (en) * | 2010-06-10 | 2013-02-13 | Lg电子株式会社 | Refrigerator with ice maker |
| CN102455094A (en) * | 2010-10-28 | 2012-05-16 | Lg电子株式会社 | Refrigerator including ice maker |
| CN202470566U (en) * | 2012-01-17 | 2012-10-03 | 合肥美的荣事达电冰箱有限公司 | Refrigerator and ice-making component |
| US20150241103A1 (en) * | 2014-02-24 | 2015-08-27 | Whirlpool Corporation | Clad metal ice cube tray |
| CN110050165A (en) * | 2016-12-16 | 2019-07-23 | 三菱电机株式会社 | Ice maker and refrigerator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2021071213A (en) | 2021-05-06 |
| CN112747515B (en) | 2023-11-03 |
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| GR01 | Patent grant |