CN113617000B - Multi-section improved badminton racket with variable weight - Google Patents

Multi-section improved badminton racket with variable weight Download PDF

Info

Publication number
CN113617000B
CN113617000B CN202110908943.4A CN202110908943A CN113617000B CN 113617000 B CN113617000 B CN 113617000B CN 202110908943 A CN202110908943 A CN 202110908943A CN 113617000 B CN113617000 B CN 113617000B
Authority
CN
China
Prior art keywords
handle
socket
rod
racket
block
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
Application number
CN202110908943.4A
Other languages
Chinese (zh)
Other versions
CN113617000A (en
Inventor
翁优
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changsha Social Work College
Original Assignee
Changsha Social Work College
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Changsha Social Work College filed Critical Changsha Social Work College
Priority to CN202110908943.4A priority Critical patent/CN113617000B/en
Publication of CN113617000A publication Critical patent/CN113617000A/en
Application granted granted Critical
Publication of CN113617000B publication Critical patent/CN113617000B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B49/00Stringed rackets, e.g. for tennis
    • A63B49/02Frames
    • A63B49/08Frames with special construction of the handle

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Golf Clubs (AREA)

Abstract

The invention relates to the technical field of sports equipment, in particular to a multi-section improved badminton racket with variable weight, which comprises a handle, wherein a connector is fixedly arranged on the handle, a ball rod is fixedly connected onto the connector, a triangular connector is fixedly connected onto the ball rod, a racket ring is fixedly arranged on the triangular connector, a net surface is fixedly arranged in the racket ring, a section sheet is fixedly arranged on the ball rod, the ball rod is a hollow rod, a gravity center adjusting function with a quick fixing function is arranged in the hollow rod, the handle is of a hollow structure, the bottom of the handle is connected with a bottom support through a threaded seat, a socket is fixedly arranged on the bottom support, and a balance weight adjusting structure with an anti-shaking function is arranged on the socket; the weight adjusting structure can be connected with or detached from the handle, and the weight adjusting structure can directly adjust the weight of the racket by increasing or decreasing the weight, so that the racket is very convenient to use.

Description

Multi-section improved badminton racket with variable weight
Technical Field
The invention relates to the technical field of sports equipment, in particular to a multi-section improved badminton racket with variable weight.
Background
With the improvement of living standard of people, the cost of people on clothes and eating and housing is gradually increased, but people who face the obesity problem are more and more, and the people do not meet the requirement of health. Along with the advocated healthy life of people, more and more people pay attention to sports, and want to improve the body state of people through sports and promote the health of the body.
Among a lot of sports, the badminton is suitable for people of all ages and has low requirements on equipment and fields, and a family badminton game full of interest can be carried out outdoors by only two badminton rackets and one badminton in a family, so that the effects of promoting emotion and improving health are achieved.
However, due to the convenience, it is not easy for everyone to be equipped with a fully-suitable badminton racket like professional athletes in a family, and in a conventional family, there are men and women, and people who are old and young, and it is difficult for the racket to meet the needs of all people. The prior badminton racket does not have the function of adjusting weight, can not be freely adjusted according to different users, and can not give consideration to portability and batting power. In view of this, we propose a multi-segment improved variable weight badminton racket.
Disclosure of Invention
The present invention is directed to provide a multi-stage improved badminton racket with variable weight, so as to solve the above problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a multistage formula modified variable weight's racket, includes the handle, fixed mounting has the connector on the handle, and fixedly connected with club on the connector, fixedly connected with triangular joint on the club, and fixed mounting has the racket circle on the triangular joint, and fixed mounting has the wire side in the racket circle, fixed mounting has the segmentation piece on the club, and the club is hollow rod, installs the focus regulatory function that has quick fixed function wherein, the handle is hollow structure, and its bottom is connected with the collet through the screw thread seat, fixed mounting has the socket on the collet, and installs the counter weight regulation structure that has the function of preventing shaking on the socket.
Preferably, the connector adopts the conical structure of reducing, connects at the top of handle, and the club adopts the carbon fiber pole, the triangular joint is the integrated into one piece structure, and the mesh of wire side is the square.
Preferably, the segment pieces are arranged in a row along the direction of the cue, the segment pieces are convexly arranged on the outer wall of the cue, and the gravity center adjusting structure comprises a guide rod, a gravity center block, a push block, wing plates, a fixing bolt and a wind breaking cover.
Preferably, the guide rod is installed at the center of the ball rod cavity, the gravity center block is connected to the guide rod in a sliding mode, the push block is fixedly connected to the side face of the gravity center block and is installed in a through groove in the side face of the ball rod in a sliding mode, the wing plate is an arc-shaped plate, the fixing bolt is connected to the thread groove of the wing plate in a threaded mode, the air breaking cover is installed at the end portion of the fixing bolt, and the air breaking cover is of a conical structure.
Preferably, an internal thread is arranged in the cavity of the handle, the thread seat is connected with the internal thread, the socket is vertically connected to the bottom support, and the socket is of a fork-shaped structure.
Preferably, the counterweight adjusting structure comprises a partition plate, a counterweight block, a guide rail, a side edge, a sliding plate, a compression block, a spring and a compression block.
Preferably, baffle equidistance is arranged and is installed in the socket, and the balancing weight stopper is between two adjacent baffles, the guide rail is installed on the socket, and the side installs on the slide, side and guide rail sliding connection, and spring fixed connection are between slide and socket, the briquetting is arranged and is installed in the side of slide, and the quantity of briquetting is unanimous with the quantity of baffle.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the badminton racket, the handles of the badminton racket are detachably connected through the threaded structures, and the bottom supports are connected with the sockets, so that the base of the balance weight adjusting structure is formed, the balance weight adjusting structure can be connected with or detached from the handles, direct weight adjustment can be performed through increasing or decreasing the balance weight, and the badminton racket is very convenient to use;
2. in the counterweight adjusting structure, after the number of the counterweight blocks is selected, the socket is required to be inserted into the handle and fixed by using the threaded seat, so that the whole weight of the racket is adjusted, the top of the sliding plate connected with the socket is extruded by the top surface of the cavity of the handle through the pressure block, so that the sliding plate is driven to move downwards along the guide rail, the pressure block is pressed on the counterweight blocks, the counterweight blocks are further fixed, the pressure blocks are independently acting and can be pressed against each counterweight block, a user can be ensured not to feel a shaking feeling when holding the handle, and the normal movement of the user is not influenced;
3. after the weight of the whole badminton racket is adjusted, the center of gravity of the badminton racket can be adjusted according to personal hand feeling, the best balance effect is achieved, the center of gravity of the badminton racket can be adjusted by mainly utilizing the push block to drive the center of gravity block to move in the ball rod, the center of gravity block has larger mass and can play a decisive role in the center of gravity of the badminton racket, the center of gravity can be adjusted through the change of the position of the center of gravity block, then the push block and the center of gravity block are fixed by utilizing the connection of the fixing bolt with the wing plate and the segmenting piece, the movement of the center of gravity block under the action of inertia in the batting process is prevented, the wing plate is of a streamline structure, the fixing bolt is also provided with the conical air breaking cover, and the wind resistance of the center of gravity adjusting structure can be reduced.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of a racquet structure of the present invention;
FIG. 3 is a schematic view of a counterweight adjustment structure according to the present invention;
FIG. 4 is a schematic view of a center of gravity adjustment configuration of the present invention;
fig. 5 is an enlarged schematic view of the area a in fig. 1.
In the figure: the racket comprises a handle 1, a connector 2, a ball rod 3, a triangular joint 4, a racket ring 5, a net surface 6, a segmented piece 7, a guide rod 8, a gravity center block 9, a push block 10, a wing plate 11, a fixing bolt 12, a wind breaking cover 13, a bottom support 14, a threaded seat 15, a socket 16, a partition plate 17, a balancing weight 18, a guide rail 19, a side edge 20, a sliding plate 21, a compression block 22, a spring 23 and a pressing block 24.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 5, the present invention provides a technical solution: the utility model provides a multistage formula modified variable weight's racket, including handle 1, fixed mounting has connector 2 on handle 1, and fixedly connected with club 3 on the connector 2, fixedly connected with triangular joint 4 on the club 3, and fixedly connected with racket circle 5 on the triangular joint 4, and fixed mounting has wire side 6 in the racket circle 5, fixed mounting has segmentation piece 7 on the club 3, and club 3 is hollow pole, wherein install the focus regulatory function that has quick fixed function, handle 1 is hollow structure, and its bottom is connected with collet 14 through screw thread seat 15, fixed mounting has socket 16 on collet 14, and install the counter weight regulation structure that has the function of preventing shaking on socket 16.
The connector 2 is of a reducing conical structure and is connected to the top of the handle 1, the ball rod 3 is a carbon fiber rod, the triangular connector 4 is of an integrally formed structure, and meshes of the net surface 6 are square;
the handle 1, the connector 2, the ball rod 3, the triangular joint 4, the racket ring 5 and the net surface 6 are conventional structures of a badminton racket and are sequentially connected to form a main body structure of the badminton racket, wherein the handle 1, the connector 2, the ball rod 3 and the triangular joint 4 are handheld parts, and the racket ring 5 and the net surface 6 form a ball hitting part;
the section pieces 7 are arranged along the direction of the cue 3, the section pieces 7 are convexly arranged on the outer wall of the cue 3, and the gravity center adjusting structure comprises a guide rod 8, a gravity center block 9, a push block 10, a wing plate 11, a fixing bolt 12 and a wind breaking cover 13;
a multi-section type protruding structure is formed on the surface of the ball arm 3 by utilizing the sectional sheets 7 and is used for fixing any position of the gravity center adjusting structure;
the guide rod 8 is arranged at the center of the cavity of the ball rod 3, the gravity center block 9 is connected to the guide rod 8 in a sliding mode, the push block 10 is fixedly connected to the side face of the gravity center block 9, the push block 10 is installed in a through groove in the side face of the ball rod 3 in a sliding mode, the wing plate 11 is an arc-shaped plate, the fixing bolt 12 is connected to a thread groove of the wing plate 11 in a threaded mode, the wind breaking cover 13 is installed at the end portion of the fixing bolt 12, and the wind breaking cover 13 is of a conical structure;
after the whole weight of the badminton racket is adjusted, the center of gravity position of the racket can be adjusted according to the personal hand feeling, the best balance effect is achieved, when the badminton racket is adjusted, after the fixing bolt 12 is screwed out, the push block 10 is used for driving the center of gravity block 9 to move in the ball rod 3, the center of gravity block 9 has larger mass and can play a decisive role in the center of gravity of the racket, so that the center of gravity can be adjusted through the change of the position of the center of gravity block, then the fixing bolt 12 is connected with the wing plate 11 and the section piece 7 to fix the push block 10 and the center of gravity block 9, the center of gravity block 9 is prevented from moving under the action of inertia in the batting process, the wing plate 11 adopts a streamline structure, and the fixing bolt 12 is also provided with the conical wind breaking cover 13, so that the wind resistance of the center of gravity adjusting structure can be reduced;
an internal thread is arranged in the cavity of the handle 1, the threaded seat 15 is connected with the internal thread, the socket 16 is vertically connected to the bottom support 14, and the socket 16 is of a fork-shaped structure;
the handle 1 is detachably connected with the bottom support 14 through a thread structure, and the bottom support 14 is connected with the socket 16, so that a base of the counterweight adjusting structure is formed, and the counterweight adjusting structure can be connected with or detached from the handle 1;
the counterweight adjusting structure comprises a clapboard 17, a counterweight block 18, a guide rail 19, a side edge 20, a sliding plate 21, a compression block 22, a spring 23 and a pressing block 24;
the counterweight adjusting structure can directly adjust the weight by increasing or decreasing the counterweight block 18, and is very convenient to use;
the partition plates 17 are arranged in the socket 16 at equal intervals, the balancing weights 18 are plugged between two adjacent partition plates 17, the guide rail 19 is arranged on the socket 16, the side edge 20 is arranged on the sliding plate 21, the side edge 20 is connected with the guide rail 19 in a sliding manner, the spring 23 is fixedly connected between the sliding plate 21 and the socket 16, the pressing blocks 24 are arranged on the side surface of the sliding plate 21, and the number of the pressing blocks 24 is consistent with that of the partition plates 17;
specifically, the socket 16 can be taken out of the handle 1 through the bottom support 14, then the balancing weights 18 with corresponding quantity are plugged into the partition plate 17 according to requirements, finally the socket 16 is inserted into the handle 1 and is fixed by the threaded seat 15, the top of the sliding plate 21 connected with the socket 16 through the guide rail 19 is extruded by the top surface of the cavity of the handle 1 through the pressure block 22, so that the sliding plate 21 is driven to move downwards along the guide rail 19, the pressure block 24 is pressed on the balancing weights 18, the balancing weights 18 are further fixed, the pressure blocks 24 are independent, the pressure blocks can be pressed against each balancing weight 18, and a user can be guaranteed that the user cannot feel shaking when holding the handle 1 and the normal movement of the user is not influenced;
the working principle is as follows: firstly, the handle 1, the connector 2, the ball arm 3, the triangular connector 4, the racket ring 5 and the net surface 6 are conventional structures of a badminton racket and are connected in sequence to form a main body structure of the badminton racket, wherein the handle 1, the connector 2, the ball arm 3 and the triangular connector 4 are handheld parts, the racket ring 5 and the net surface 6 form a ball hitting part, a multi-section type protruding structure is formed on the surface of the ball arm 3 by utilizing the section plates 7 and is used for fixing any position of a gravity center adjusting structure, the handle 1 is detachably connected with the base 14 through a thread structure, the base 14 is connected with the socket 16, and therefore a base of a counterweight adjusting structure is formed and can be connected with or detached from the handle 1, the counterweight adjusting structure can be used for directly adjusting the weight by increasing or decreasing the counterweight weight 18, and the use is very convenient and specific, the socket 16 can be taken out from the handle 1 through the bottom support 14, then the balancing weights 18 with corresponding quantity are plugged into the partition plate 17 according to requirements, finally the socket 16 is inserted into the handle 1, and the threaded seat 15 is utilized for fixing, the regulation of the whole weight of the badminton racket is completed, the top of the sliding plate 21 connected with the socket 16 through the guide rail 19 is extruded by the pressure block 22 on the top surface of the cavity of the handle 1, so that the sliding plate 21 is driven to move downwards along the guide rail 19, the pressure block 24 is tightly pressed on the balancing weights 18, the balancing weights 18 are further fixed, the pressure blocks 24 are independently acting, the pressure can be tightly pressed against each balancing weight 18, the user can not feel shaking when holding the handle 1, the normal running of the badminton racket is not influenced, the gravity center position of the badminton racket can be regulated according to the hand feeling of the individual after the whole weight of the badminton racket is regulated, the best balance effect is achieved, during adjustment, after the fixing bolt 12 is screwed out, the push block 10 is utilized to drive the gravity center block 9 to move in the ball rod 3, the gravity center block 9 has larger mass and can play a decisive role in the gravity center of the racket, so that the gravity center can be adjusted through the change of the position of the gravity center block, and then the fixing bolt 12 is utilized to be connected with the wing plate 11 and the section plate 7 to fix the push block 10 and the gravity center block 9, so that the gravity center block 9 is prevented from moving under the action of inertia in the batting process, the wing plate 11 adopts a streamline structure, the fixing bolt 12 is also provided with the conical wind breaking cover 13, and the wind resistance of the gravity center adjusting structure can be reduced.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various 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 (3)

1. A multi-section improved badminton racket with variable weight comprises a handle (1), and is characterized in that: the handle (1) is fixedly provided with a connector (2), the connector (2) is fixedly connected with a ball rod (3), the ball rod (3) is fixedly connected with a triangular connector (4), the triangular connector (4) is fixedly provided with a racket ring (5), a net surface (6) is fixedly arranged in the racket ring (5), the ball rod (3) is fixedly provided with a segmented sheet (7), the ball rod (3) is a hollow rod, a gravity center adjusting structure with a quick fixing function is arranged in the hollow rod, the handle (1) is of a hollow structure, the bottom of the handle is connected with a bottom support (14) through a threaded seat (15), the bottom support (14) is fixedly provided with a socket (16), and the socket (16) is provided with a balance weight adjusting structure with an anti-shaking function; the section pieces (7) are arranged in an array mode along the direction of the ball rod (3), the section pieces (7) are arranged on the outer wall of the ball rod (3) in a protruding mode, and the gravity center adjusting structure comprises a guide rod (8), a gravity center block (9), a push block (10), wing plates (11), a fixing bolt (12) and a wind breaking cover (13); the counterweight adjusting structure comprises a partition plate (17), a counterweight block (18), a guide rail (19), side edges (20), a sliding plate (21), a compression block (22), a spring (23) and a compression block (24); the guide rod (8) is installed at the central position of a cavity of the ball rod (3), the gravity center block (9) is slidably connected onto the guide rod (8), the push block (10) is fixedly connected to the side face of the gravity center block (9), the push block (10) is slidably installed in a through groove in the side face of the ball rod (3), the wing plates (11) are arc-shaped plates, the fixing bolts (12) are in threaded connection with thread grooves of the wing plates (11), the wind breaking covers (13) are installed at the end portions of the fixing bolts (12), the wind breaking covers (13) are of conical structures, the partition plates (17) are equidistantly arranged and installed in the socket (16), the balancing weight (18) is plugged between two adjacent partition plates (17), the guide rails (19) are installed on the socket (16), the side edges (20) are installed on the sliding plates (21), the side edges (20) are slidably connected with the guide rails (19), the springs (23) are fixedly connected between the sliding plates (21) and the number of the pressing blocks (24) is consistent with that of the partition plates (17).
2. A multi-section improved variable weight badminton racket according to claim 1, wherein: the connector (2) adopts a tapered conical structure and is connected to the top of the handle (1), the ball rod (3) adopts a carbon fiber rod, the triangular connector (4) is of an integrally formed structure, and meshes of the mesh surface (6) are square.
3. The multi-section improved variable weight badminton racket of claim 1, wherein: be provided with the internal thread in the cavity of handle (1), and screw thread seat (15) and female connection, socket (16) are connected perpendicularly on collet (14), and socket (16) are fork structure.
CN202110908943.4A 2021-08-09 2021-08-09 Multi-section improved badminton racket with variable weight Active CN113617000B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110908943.4A CN113617000B (en) 2021-08-09 2021-08-09 Multi-section improved badminton racket with variable weight

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110908943.4A CN113617000B (en) 2021-08-09 2021-08-09 Multi-section improved badminton racket with variable weight

Publications (2)

Publication Number Publication Date
CN113617000A CN113617000A (en) 2021-11-09
CN113617000B true CN113617000B (en) 2022-10-28

Family

ID=78383680

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110908943.4A Active CN113617000B (en) 2021-08-09 2021-08-09 Multi-section improved badminton racket with variable weight

Country Status (1)

Country Link
CN (1) CN113617000B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8007379B1 (en) * 2008-08-19 2011-08-30 Cook Cristina M Tennis racket with adjustable balance and method for using the same
CN210355899U (en) * 2019-05-15 2020-04-21 南京源威复合材料科技有限公司 Badminton racket with adjustable gravity center
CN211273463U (en) * 2019-11-08 2020-08-18 宿迁圣力佳合体育用品有限公司 Handle of badminton racket

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6432004B1 (en) * 1994-09-27 2002-08-13 Stephen A. Nemeckay Tennis training device
CN202315169U (en) * 2011-10-13 2012-07-11 北京工业大学 Badminton with adjustable balance point
CN203060721U (en) * 2013-01-12 2013-07-17 王丽萍 Badminton racket with adjustable weight
CN205073620U (en) * 2015-11-03 2016-03-09 厦门鼎立祥复材科技有限公司 Multifunctional badminton racket
CN205699258U (en) * 2016-04-08 2016-11-23 南昌师范学院 Table tennis bat
CN209333141U (en) * 2018-12-10 2019-09-03 周森 A kind of badminton racquet handle
CN209679435U (en) * 2019-02-28 2019-11-26 沈阳工程学院 A kind of racket of adjustable weight
CN210355898U (en) * 2019-05-15 2020-04-21 南京源威复合材料科技有限公司 Badminton racket with adjustable counter weight
CN211611528U (en) * 2019-10-28 2020-10-02 扬州克林体育用品有限公司 Telescopic racket

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8007379B1 (en) * 2008-08-19 2011-08-30 Cook Cristina M Tennis racket with adjustable balance and method for using the same
CN210355899U (en) * 2019-05-15 2020-04-21 南京源威复合材料科技有限公司 Badminton racket with adjustable gravity center
CN211273463U (en) * 2019-11-08 2020-08-18 宿迁圣力佳合体育用品有限公司 Handle of badminton racket

Also Published As

Publication number Publication date
CN113617000A (en) 2021-11-09

Similar Documents

Publication Publication Date Title
CN206745909U (en) Badminton training auxiliary device of variable angle
CN213031741U (en) Long service life's small-size trampoline of indoor
CN113617000B (en) Multi-section improved badminton racket with variable weight
CN108905115A (en) A kind of campus badminton net easy for installation with regulatory function
CN201384829Y (en) Badminton racket frame with low wind resistance
CN110465058A (en) A kind of Portable bad minton net stand
CN213374989U (en) Aerobics exercises strength training ware
CN205586445U (en) Outdoor sports fitness car of energy -concerving and environment -protective type
CN220327858U (en) Efficient physical training ware
CN111298374A (en) Device is tempered with foldable abdominal muscle reinforcing to sports training
CN205340020U (en) Table tennis ball collecting device
CN208611659U (en) A kind of novel Pogo stick
CN205391621U (en) Combined table tennis ball collecting device
CN205964898U (en) Novel badminton racket
CN110339533A (en) A kind of arm strength exercise system based on computer control
CN205391622U (en) Novel table tennis collection ball device
CN219614840U (en) Multifunctional intelligent spring-grip dumb-bell
CN109045612A (en) A kind of athletic training arm exercises device
CN202777728U (en) Cue holder
CN201586358U (en) Improved structure of golf push rod head
CN215916366U (en) High-stability multi-instrument type body-building portal frame
CN216963488U (en) Racket structure is used in flexible adjustable badminton teaching
WO2019071746A1 (en) Shuttlecock with magnetic body
CN212235915U (en) Shooting device for basketball training
CN210612836U (en) Table tennis exerciser

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant