CN109188340B - Compatible connect device of taking out stitches - Google Patents

Compatible connect device of taking out stitches Download PDF

Info

Publication number
CN109188340B
CN109188340B CN201811084138.9A CN201811084138A CN109188340B CN 109188340 B CN109188340 B CN 109188340B CN 201811084138 A CN201811084138 A CN 201811084138A CN 109188340 B CN109188340 B CN 109188340B
Authority
CN
China
Prior art keywords
fixedly connected
sliding
cylinder
base plate
probe
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
CN201811084138.9A
Other languages
Chinese (zh)
Other versions
CN109188340A (en
Inventor
何毓函
孙艳玲
翟晓卉
刘蜜
李霖
祝福
赵吉福
张蒙
邹璐
国立英
宋家乐
高群
石春艳
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.)
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Shandong Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Shandong Electric Power Co Ltd
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 State Grid Corp of China SGCC, Electric Power Research Institute of State Grid Shandong Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201811084138.9A priority Critical patent/CN109188340B/en
Publication of CN109188340A publication Critical patent/CN109188340A/en
Application granted granted Critical
Publication of CN109188340B publication Critical patent/CN109188340B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R35/00Testing or calibrating of apparatus covered by the other groups of this subclass
    • G01R35/04Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Leads Or Probes (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

The invention relates to the technical field of instrument detection, and discloses a compatible connecting and disconnecting device which comprises an equipment rack, wherein the upper surface of the equipment rack is fixedly connected with a base and a conveying line from left to right, the upper surface of the base is fixedly connected with a III-type special transformer terminal propelling cylinder, the upper surface of the conveying line is movably connected with a tray, the upper surface of the tray is fixedly connected with a meter to be detected, and the side wall of the inner cavity of the equipment rack is fixedly connected with a supporting substrate. This compatible connect take out of stitches device, through setting up the transfer chain, the special transformer terminal of III type impels the cylinder, the cylinder switches over from top to bottom, impel the cylinder and directly insert formula three-phase table through mutual-inductor access formula three-phase table, utilize the cylinder work of switching over from top to bottom to drive first movable base plate and second movable base plate and reciprocate, through adjusting second gauge stand probe and third gauge stand probe height, reached and made second gauge stand probe and third gauge stand probe respectively with the terminal mouth effect of being connected of measurand counting.

Description

Compatible connect device of taking out stitches
Technical Field
The invention relates to the technical field of instrument detection, in particular to a compatible wire connecting and disconnecting device.
Background
The automatic verification assembly line of the electric energy meter is a novel automatic instrument detection system, is mainly used for metering centers of electric power companies and electric energy meter production enterprises, realizes the automatic verification of the assembly line type of the electric energy meter, and can verify tasks according to the electric energy meter issued by a marketing system; along with the development of market, the traditional detection assembly line can not meet the requirements of production and processing, in the detection assembly line, because the meters in different forms are different in appearance, size and wire holders of the electric meters, the works such as wiring, disconnecting and detecting can not be carried out on the same drain line, so that the meters in 3 different forms can not be compatibly detected, a large project land is greatly occupied, and the production management cost is greatly increased.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a compatible connecting and disconnecting device which has the advantages of saving the cost of production management and the like and solves the problem of higher cost of project land.
(II) technical scheme
In order to achieve the purpose of saving the cost of production management, the invention provides the following technical scheme: a compatible connecting and disconnecting device comprises an equipment frame, wherein the upper surface of the equipment frame is fixedly connected with a base and a conveying line from left to right in sequence, the upper surface of the base is fixedly connected with a type-III special transformer terminal propelling cylinder, the upper surface of the conveying line is movably connected with a tray, the upper surface of the tray is fixedly connected with a meter to be measured, a supporting base plate is fixedly connected with the side wall of an inner cavity of the equipment frame, the bottom of the supporting base plate is fixedly connected with a bottom plate, the upper surface of the bottom plate is fixedly connected with an up-down switching cylinder, the output end of the up-down switching cylinder is fixedly connected with a first movable base plate through a first connecting rod, the upper surface of the first movable base plate is movably connected with a first sliding plate, the upper surface of the first sliding plate is fixedly connected with a second gauge stand probe, one end of the first sliding plate is fixedly connected with the output end of the three, the lateral wall department swing joint of supporting baseplate has the second activity base plate, the upper surface sliding connection of second activity base plate has the second slide, the last fixed surface of second slide is connected with the third surface seat probe, the one end of second activity base plate is through third connecting rod fixed connection at the output that direct access formula three-phase table impeld the cylinder.
Preferably, the upper surface of the conveying line is fixedly connected with a limiting block.
Preferably, the lower surface of the tray is fixedly connected with an output shaft of a motor through a rotating shaft, and the bottom of the motor is fixedly connected to the upper surface of the equipment rack.
Preferably, a terminal port is formed in one end of the meter to be measured, the terminal port is matched with the probe, the third surface base probe comprises a needle head, the bottom of the needle head is fixedly connected inside the needle tube, and a spring is arranged at the bottom of the inner cavity of the needle tube.
Preferably, the motor is 51K90A-CF, the rated rotating speed is 450rmp, and the bottom of the tray is provided with a positioning pin.
Preferably, the both ends of second slide pass through slider sliding connection in support substrate's lateral wall department, slider includes the top block, the lateral wall department of top block inner chamber is through first ball and the outer wall department sliding connection of slide rail down, the lower surface of slide rail passes through second ball and support substrate's upper surface sliding connection down, the specification of first activity base plate is the same with the specification of second activity base plate.
Preferably, the top of the first movable substrate is provided with a groove, an inner cavity of the groove is movably connected with a roller, and two ends of the roller are movably connected with the bottom of the first sliding plate through a connecting shaft.
Preferably, the output end of the III-type special transformer terminal propulsion cylinder is fixedly connected with a third sliding plate through a fourth connecting rod, and the upper surface of the third sliding plate is fixedly connected with a first gauge stand probe.
(III) advantageous effects
Compared with the prior art, the invention provides a compatible connecting and disconnecting device, which has the following beneficial effects:
this compatible disconnect device that connects, through setting up the transfer chain, the special transformer terminal of III type impels the cylinder, the cylinder switches from top to bottom, impel the cylinder and directly insert formula three-phase table through mutual-inductor access formula three-phase table, utilize the cylinder work of switching from top to bottom to drive first movable base plate and second movable base plate and reciprocate, through adjusting second gauge stand probe and third gauge stand probe height, the effect that makes second gauge stand probe and third gauge stand probe be connected with the terminal of being surveyed the table meter respectively has been reached, utilize tray work will be surveyed the table meter rotatory 180 degrees and with first gauge stand probe connection, reached that same detection assembly line can compatible three kinds of different forms the table meter, the project land used and production management cost have been practiced thrift.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a supporting substrate structure according to the present invention;
FIG. 3 is a schematic view of the structure of the tray of the present invention;
FIG. 4 is a schematic diagram of a third pedestal probe structure according to the present invention;
FIG. 5 is a schematic view of a terminal port structure according to the present invention;
fig. 6 is a schematic structural view of the sliding device of the present invention.
In the figure: 1. an equipment rack; 2. a base; 3. a conveying line; 4. propelling the cylinder by the type III special transformer terminal; 5. a first gauge stand probe; 6. a tray; 7. a meter to be measured; 8. supporting a substrate; 9. a base plate; 10. an up-down switching cylinder; 11. a first connecting rod; 12. a first movable substrate; 13. a first slide plate; 14. a second gauge stand probe; 15. a second connecting rod; 16. pushing the cylinder by a mutual inductor access type three-phase meter; 17. a second movable substrate; 18. a second slide plate; 19. a third pedestal probe; 191. a needle head; 192. a needle tube; 20. a third connecting rod; 21. a direct access type three-phase meter propulsion cylinder; 22. a rotating shaft; 23. a motor; 24. a sliding device; 241. an upper slide block; 242. a first ball bearing; 243. a lower slide rail; 244. a second ball bearing; 25. a fourth connecting rod; 26. a third slide plate; 27. a terminal port; 28. a groove; 29. a roller; 30. and (7) connecting the shafts.
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. 1-6, a compatible connecting and disconnecting device includes an equipment rack 1, an upper surface of the equipment rack 1 is fixedly connected with a base 2 and a conveying line 3 from left to right in sequence, an upper surface of the base 2 is fixedly connected with a type iii special transformer terminal propulsion cylinder 4, an upper surface of the conveying line 3 is movably connected with a tray 6, an upper surface of the tray 6 is fixedly connected with a measured meter 7, a side wall of an inner cavity of the equipment rack 1 is fixedly connected with a supporting substrate 8, a bottom plate 9 is fixedly connected with the bottom of the supporting substrate 8, an upper surface of the bottom plate 9 is fixedly connected with an up-down switching cylinder 10, an output end of the up-down switching cylinder 10 is fixedly connected with a first movable substrate 12 through a first connecting rod 11, an upper surface of the first movable substrate 12 is movably connected with a first sliding plate 13, an upper surface of the first sliding plate 13 is fixedly connected with a second meter base probe 14, one end of the first sliding plate 13 is fixedly connected with a The output end, the lateral wall department of the supporting baseplate 8 has the second movable baseplate 17 movably connected, the upper surface of the second movable baseplate 17 has the second sliding plate 18 in sliding connection, the upper surface of the second sliding plate 18 has the third base probe 19 fixedly connected, one end of the second movable baseplate 17 is fixedly connected with the output end of the direct access type three-phase meter propulsion cylinder 21 through the third connecting rod 20, the compatible connecting and disconnecting device, through setting the conveying line 3, the type III special transformer terminal propulsion cylinder 4, the up-down switching cylinder 10, the mutual inductor access type three-phase meter propulsion cylinder 16 and the direct access type three-phase meter propulsion cylinder 21, the up-down switching cylinder 10 is used for working to drive the first movable baseplate 12 and the second movable baseplate 17 to move up and down, through adjusting the height of the second base probe 14 and the third base probe 19, the effect of connecting the second base probe 14 and the third base probe 19 with the terminal of the measured meter 7 respectively is achieved, utilize 6 work of tray to be surveyed table meter 7 rotation 180 degrees and be connected with first gauge stand probe 5, reached that same detection assembly line can be compatible three kinds of different forms table meters, practiced thrift project land used and production management cost.
Specifically, fixed surface is connected with the stopper on the transfer chain 3, blocks tray 6 through setting up the stopper and makes it stop on being surveyed the station.
Specifically, the lower surface of tray 6 is through the output shaft fixed connection of pivot 22 with motor 23, and the bottom fixed connection of motor 23 has reached and has rotated tray 6 through setting up motor 23 and pivot 22 at the upper surface of equipment frame 1.
Specifically, a terminal port 27 is formed at one end of the meter to be measured 7, the terminal port 27 is matched with the probe 19, the probe 19 of the third seat comprises a needle head 191, the bottom of the needle head 191 is fixedly connected inside the needle tube 192, and a spring is arranged at the bottom of the inner cavity of the needle tube 192.
Specifically, the motor 23 is 51K90A-CF, the rated rotation speed is 450rmp, and the bottom of the tray 6 is provided with a positioning pin.
Specifically, the two ends of the second sliding plate 18 are slidably connected to the side wall of the supporting substrate 8 through the sliding device 24, the sliding device 24 includes an upper slider 241, the side wall of the inner cavity of the upper slider 241 is slidably connected to the outer wall of the lower sliding rail 243 through the first ball 242, the lower surface of the lower sliding rail 243 is slidably connected to the upper surface of the supporting substrate 8 through the second ball 244, the specification of the first movable substrate 12 is the same as that of the second movable substrate 17, and the effect of enabling the second sliding plate 18 to slide on the side surface of the supporting substrate 8 is achieved conveniently and smoothly by arranging the sliding device 24.
Specifically, a groove 28 is formed at the top of the first movable base plate 12, a roller 29 is movably connected to an inner cavity of the groove 28, and two ends of the roller 29 are movably connected to the bottom of the first sliding plate 13 through a connecting shaft 30.
Specifically, the output end of the type iii special transformer terminal propulsion cylinder 4 is fixedly connected to a third sliding plate 26 through a fourth connecting rod 25, and the upper surface of the third sliding plate 26 is fixedly connected to a first gauge stand probe 5.
The electrical components presented in the document are electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device for controlling a computer and the like.
When the mutual inductor type electric meter is used, the transmission line 3 moves the measured meter 7, the limit block blocks the measured meter 7 on a measured station, when the mutual inductor type electric meter needs to be detected, the up-down switching cylinder 10 works to drive the first movable substrate 12 and the second movable substrate 17 to move upwards until the second meter base probe 14 and a terminal port 27 of the measured meter 7 are in the same horizontal line, and the mutual inductor access type three-phase meter pushes the cylinder 16 to work to drive the first sliding plate 13 until the second meter base probe 14 is connected with the terminal port 27 of the measured meter 7; when the direct type electric meter needs to be detected, after the mutual inductor access type three-phase meter propulsion cylinder 16 works to drive the second meter base probe 14 to be separated from the terminal port 27 of the measured meter 7, the up-down switching cylinder 10 works to drive the first movable substrate 12 and the second movable substrate 17 to move downwards until the third meter base probe 19 and the terminal port 27 of the measured meter 7 are in the same horizontal line, and the direct access type three-phase meter propulsion cylinder 21 works to drive the second sliding plate 18 until the third meter base probe 19 is connected with the terminal port 27 of the measured meter 7; the motor 23 works to horizontally rotate the meter 7 to be measured by 180 degrees, and the first gauge stand probe 5 is connected with the terminal of the meter 7 to be measured in the same way, namely a series of compatible connection and disconnection works are completed.
In summary, the compatible connecting and disconnecting device has the advantages that the conveying line 3, the type-III special transformer terminal propelling cylinder 4, the up-down switching cylinder 10, the transformer-accessed three-phase meter propelling cylinder 16 and the direct-accessed three-phase meter propelling cylinder 21 are arranged, the up-down switching cylinder 10 is used for driving the first movable substrate 12 and the second movable substrate 17 to move up and down, the second gauge stand probe 14 and the third gauge stand probe 19 are adjusted in height, the effect that the second gauge stand probe 14 and the third gauge stand probe 19 are respectively connected with the terminal of the measured gauge 7 is achieved, the tray 6 is used for rotating the measured gauge 7 180 degrees and is connected with the first gauge stand probe 5, the same detection assembly line can be compatible with three gauges in different forms, and project land and production management cost are saved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
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. A compatible connect disconnect device, includes equipment rack (1), its characterized in that: the upper surface of the equipment rack (1) is fixedly connected with a base (2) and a conveying line (3) from left to right in sequence, the upper surface of the base (2) is fixedly connected with a III-type special transformer terminal propelling cylinder (4), the upper surface of the conveying line (3) is movably connected with a tray (6), the upper surface of the tray (6) is fixedly connected with a measured meter (7), the side wall of the inner cavity of the equipment rack (1) is fixedly connected with a supporting base plate (8), the bottom of the supporting base plate (8) is fixedly connected with a bottom plate (9), the upper surface of the bottom plate (9) is fixedly connected with an up-and-down switching cylinder (10), the output end of the up-and-down switching cylinder (10) is fixedly connected with a first movable base plate (12) through a first connecting rod (11), and the upper surface of the first movable base plate (12) is movably connected with, the upper surface of the first sliding plate (13) is fixedly connected with a second gauge stand probe (14), one end of the first sliding plate (13) is fixedly connected to the output end of a three-phase meter propulsion cylinder (16) accessed through a mutual inductor through a second connecting rod (15), the side wall of the supporting substrate (8) is movably connected with a second movable substrate (17), the upper surface of the second movable substrate (17) is slidably connected with a second sliding plate (18), the upper surface of the second sliding plate (18) is fixedly connected with a third gauge stand probe (19), and one end of the second movable substrate (17) is fixedly connected to the output end of a direct-accessed three-phase meter propulsion cylinder (21) through a third connecting rod (20); the lower surface of the tray (6) is fixedly connected with an output shaft of a motor (23) through a rotating shaft (22), and the bottom of the motor (23) is fixedly connected to the upper surface of the equipment rack (1); the two ends of the second sliding plate (18) are connected to the side wall of the supporting base plate (8) in a sliding mode through sliding devices (24), each sliding device (24) comprises an upper sliding block (241), the side wall of the inner cavity of each upper sliding block (241) is connected with the outer wall of a lower sliding rail (243) in a sliding mode through first balls (242), the lower surface of each lower sliding rail (243) is connected with the upper surface of the supporting base plate (8) in a sliding mode through second balls (244), and the specification of the first movable base plate (12) is the same as that of the second movable base plate (17); a groove (28) is formed in the top of the first movable base plate (12), a roller (29) is movably connected to the inner cavity of the groove (28), and two ends of the roller (29) are movably connected with the bottom of the first sliding plate (13) through a connecting shaft (30).
2. The compatible connecting and disconnecting device according to claim 1, wherein: the upper surface of the conveying line (3) is fixedly connected with a limiting block.
3. The compatible connecting and disconnecting device according to claim 1, wherein: terminal mouth (27) have been seted up to the one end of being surveyed table meter (7), terminal mouth (27) and probe (19) looks adaptation, third table probe (19) include syringe needle (191), the bottom fixed connection of syringe needle (191) is in the inside of needle tubing (192), the bottom of needle tubing (192) inner chamber is provided with the spring.
4. The compatible connecting and disconnecting device according to claim 1, wherein: the motor (23) is 51K90A-CF, the rated rotation speed is 450rmp, and a positioning pin is arranged at the bottom of the tray (6).
5. The compatible connecting and disconnecting device according to claim 1, wherein: the output end of the III-type special transformer terminal propulsion cylinder (4) is fixedly connected with a third sliding plate (26) through a fourth connecting rod (25), and the upper surface of the third sliding plate (26) is fixedly connected with a first gauge stand probe (5).
CN201811084138.9A 2018-09-18 2018-09-18 Compatible connect device of taking out stitches Active CN109188340B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811084138.9A CN109188340B (en) 2018-09-18 2018-09-18 Compatible connect device of taking out stitches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811084138.9A CN109188340B (en) 2018-09-18 2018-09-18 Compatible connect device of taking out stitches

Publications (2)

Publication Number Publication Date
CN109188340A CN109188340A (en) 2019-01-11
CN109188340B true CN109188340B (en) 2021-03-02

Family

ID=64911916

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811084138.9A Active CN109188340B (en) 2018-09-18 2018-09-18 Compatible connect device of taking out stitches

Country Status (1)

Country Link
CN (1) CN109188340B (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203630341U (en) * 2013-10-30 2014-06-04 国家电网公司 Automatic voltage-withstanding verification device integrated with three-phase electric energy meter and special transformer III
CN204556668U (en) * 2015-03-27 2015-08-12 施瑞机械自动化有限公司 A kind of compatible three-phase intelligent ammeter and III type specially become carrying of acquisition terminal and show pallet
CN106501753A (en) * 2016-09-28 2017-03-15 国网内蒙古东部电力有限公司 A kind of three-phase electric energy meter automated detection method
CN206552767U (en) * 2017-03-13 2017-10-13 南京晟德自动化设备有限公司 180 ° of rotating mechanisms for automatic production line
CN107356796A (en) * 2017-08-24 2017-11-17 罗必锋 A kind of electricity meter box device of installation by adhering
CN107561482A (en) * 2017-09-28 2018-01-09 云南电网有限责任公司电力科学研究院 A kind of calibrating detection device of the compatible three-phase electric energy meter of bilayer and single-phase electric energy meter
CN207752138U (en) * 2018-01-24 2018-08-21 郑州三晖电气股份有限公司 A kind of multi-functional gauge stand bin device
CN207752140U (en) * 2018-01-24 2018-08-21 郑州三晖电气股份有限公司 The flexible intelligent calibrating installation of compatible a variety of electric energy meter calibrations

Also Published As

Publication number Publication date
CN109188340A (en) 2019-01-11

Similar Documents

Publication Publication Date Title
CN203299322U (en) Electric connector plugging service life tester
CN106525902B (en) A kind of switchgear Up Highway UHW Special automatic detection device
CN206223580U (en) Plug testing machine
CN106128974B (en) A kind of solar panel testing agency
CN109188340B (en) Compatible connect device of taking out stitches
CN207851117U (en) A kind of new energy car battery production and processing monitor station
CN106603788B (en) For detecting the detection device of mobile phone charging hole and earpiece holes
CN204731404U (en) Electric energy meter, terminal list pick-up unit
CN213337833U (en) Durable plug testing machine of USB interface
CN111379948A (en) Service data acquisition device for power supply business hall
CN206951132U (en) A kind of soil conditioner medicament weighing device
CN104897713B (en) A kind of device of the thermal deformation and deformation power uniformity for measuring thrermostatic bimetal-plate
CN207008047U (en) Campatible automatic calibration of electric energy meter system with double belt line
CN207742327U (en) A kind of detection device of ammeter electric wire
CN207239456U (en) A kind of laser cutting machine support for tubing cutting
CN208318112U (en) A kind of multifunctional high speed dishing distributor
CN205312590U (en) Ball screw pushes away bottle machine
CN206003890U (en) A kind of insulating trip bending Wrap device
CN216485359U (en) Manual pressing test fixture
CN204820218U (en) Power shell is cut mouth of a river and is surveyed rubber coating all -in -one
CN219389165U (en) Intelligent inquiry machine for self-service of convenience for people
CN205317897U (en) Many functional type efficiency promotes one and drags four test machines
CN212925443U (en) Rail mounted intelligence cloth head detector mounting structure
CN219758356U (en) Intelligent three-phase ammeter based on Lora
CN208547689U (en) A kind of mutual inductor detection dispensing all-in-one machine

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