CN106219076A - A kind of detachable toothpaste tube of double end - Google Patents

A kind of detachable toothpaste tube of double end Download PDF

Info

Publication number
CN106219076A
CN106219076A CN201610674865.5A CN201610674865A CN106219076A CN 106219076 A CN106219076 A CN 106219076A CN 201610674865 A CN201610674865 A CN 201610674865A CN 106219076 A CN106219076 A CN 106219076A
Authority
CN
China
Prior art keywords
cylinder body
rear cylinder
front barrel
toothpaste tube
conveyor front
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
Application number
CN201610674865.5A
Other languages
Chinese (zh)
Other versions
CN106219076B (en
Inventor
王志伟
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CN201610674865.5A priority Critical patent/CN106219076B/en
Publication of CN106219076A publication Critical patent/CN106219076A/en
Application granted granted Critical
Publication of CN106219076B publication Critical patent/CN106219076B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00Containers or packages with special means for dispensing contents
    • B65D83/0005Containers or packages provided with a piston or with a movable bottom or partition having approximately the same section as the container
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D35/00Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor
    • B65D35/22Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor with two or more compartments
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D35/00Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor
    • B65D35/24Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor with auxiliary devices
    • B65D35/28Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor with auxiliary devices for expelling contents
    • B65D35/30Pistons
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2583/00Containers or packages with special means for dispensing contents
    • B65D2583/005Dispensers provided with a replaceable cartridge, recharge or pouch located within the dispenser

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Brushes (AREA)
  • Tubes (AREA)

Abstract

The present invention relates to a kind of detachable toothpaste tube of double end, including internal sliding conveyor front barrel (1) and the rear cylinder body (15) having piston (2), and be positioned between described conveyor front barrel (1) and rear cylinder body (15) and can promote the pusher that described piston (2) moves axially along conveyor front barrel (1) and rear cylinder body (15), described conveyor front barrel (1) and rear cylinder body (15) one end of pusher is provided with paste outlet (11) and the sealing lid (12) sealed by paste outlet (11).The toothpaste tube of the present invention can deposit two kinds of different toothpaste simultaneously, and removable is carried out, and to realize recycling, saves use cost, reduces garbage emission.

Description

A kind of detachable toothpaste tube of double end
Technical field
The present invention relates to toothpaste and hold field, particularly relate to a kind of toothpaste tube, be specially a kind of detachable toothpaste tube of double end.
Background technology
Toothpaste is the necessary in a kind of people's daily life, and its usage amount is very big, accordingly, deposits appearance as toothpaste The toothpaste tube usage amount of device is the biggest, and the toothpaste tube being widely used at present is disposable product, it is impossible to reuse, Not only increase garbage emission, add use cost equally.Additionally, people are when going on business or travel, it may be necessary to for not Use different types of toothpaste with occasion, and existing toothpaste tube can only hold a kind of toothpaste, if meeting diversified demand, When carrying very inconvenient.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, it is provided that a kind of detachable toothpaste tube, it is possible to recycling, and can deposit simultaneously Put two kinds of different toothpaste.
The present invention is achieved through the following technical solutions, it is provided that a kind of detachable toothpaste tube of double end, including internal sliding There are conveyor front barrel and a rear cylinder body of piston, and between described conveyor front barrel and rear cylinder body and described piston can be promoted along conveyor front barrel The pusher moved axially with rear cylinder body, described conveyor front barrel and rear cylinder body away from one end of pusher be provided with paste outlet and The sealing lid that paste outlet is sealed.Different types of toothpaste can be held in forward and backward cylinder respectively, drive piston by pusher Mobile, toothpaste is extruded;After toothpaste is finished, being pulled down by forward and backward cylinder from pusher, after cleaning, rechargeable enters toothpaste, Realize recycling.
As preferably, described pusher includes the mounting seat that two ends are affixed with conveyor front barrel, rear cylinder body respectively, described installation Be provided with air cavity and cross section in Zuo less than air cavity and by the passage of calming the anger of air cavity Yu atmosphere, described in calm the anger to slip in passage and have Displacer, described displacer offers the air inlet running through upper and lower end face, is provided with air inlet court in described air inlet To the check valve of air, described in calm the anger end that passage connects with air cavity by by holding out against the seal that spring is connected with mounting seat Seal;Be additionally provided with two slideways connected with air cavity in described mounting seat, in described two slideways respectively sliding have with conveyor front barrel, The push rod that piston in rear cylinder body is affixed.In air cavity, it is pressed into air by displacer, promotes push rod to move, thus promote cylinder Toothpaste is extruded by inner carrier, easy to use laborsaving.
As preferably, described in channel cross-section of calming the anger for circle, described seal is that radius is more than channel radius of calming the anger Spheroid, difficulty of processing is little, and sealing reliability is strong.
As optimization, described displacer is connected with the button being positioned at outside mounting seat by depression bar, and described depression bar overlaps Being connected to the spring connecting button with mounting seat, after pressing button, button resets under the elastic force effect of spring, facilitates press next time Pressure.
As preferably, described conveyor front barrel and rear cylinder body are all connected with mounting seat by screw thread, are connected firmly, easy disassembly.
As optimization, described mounting seat is additionally provided with the bleed passage of connection air cavity and air, described bleed passage with One end of atmosphere is provided with plug, opens plug and the piston in before and after's cylinder can be made to return smoothly, it is not necessary to dismounting is calmed the anger work Plug.
As preferably, described pusher includes the mounting box that two ends are affixed with conveyor front barrel, rear cylinder body respectively, described installation Being installed with electro-motor and the hollow axle being rotated by described electro-motor in box, described hollow axle passes through bearing and mounting box Connect, in hollow axle, be threaded connection push rod affixed with the piston in conveyor front barrel, rear cylinder body respectively;Described propelling movement fills Put and also include that limiting hollow axle occurs the stopping means of axial displacement.Driving hollow axle to rotate by electro-motor, hollow axle leads to The active force crossing screw thread drives push rod to move back and forth, it is achieved the promotion to both sides piston, reaches to extrude the purpose of toothpaste.
As preferably, described stopping means includes being threadably secured in the limited cover at hollow axle two ends, described limited cover On be provided with the boss more than hollow axle internal diameter, described push rod pass limited cover, the boss on the limiting stand of two ends is respectively by axle Hold inner ring to stop, prevent hollow axle axially displaced along it.
As preferably, described hollow axle is installed with driven gear, the output shaft of described electro-motor is installed with and institute Stating the driving gear of driven gear engagement, power is reached hollow axle, stable drive, efficiency by gear drive by electro-motor High.
As preferably, described conveyor front barrel and rear cylinder body are all connected with mounting box by screw thread, are connected firmly, easy disassembly.
As preferably, described paste outlet is flat paste outlet, makes the toothpaste of extrusion be laid on more uniformly on toothbrush, reduces The toothpaste waste of extrusion.
Different toothpaste can be held in the invention have the benefit that forward and backward cylinder respectively, meet people's diversified demand, Front and back cylinder is carried out after pusher is pulled down, it is achieved recycling, saves use cost, decreases garbage emission, protects Retaining ring border.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 1;
Fig. 2 is for being coated with 1 top view (removing sealing lid);
Fig. 3 is zoomed-in view at I in Fig. 1;
Fig. 4 is the structural representation of the embodiment of the present invention 2;
Shown in figure:
1, conveyor front barrel, 2, piston, 3, mounting seat, 4, button, 5, push rod, 6, spring, 7, check valve, 8, plug, 9, seal, 10, displacer, 11, paste outlet, 12, seal lid, 13, hold out against spring, 14, air cavity, 15, rear cylinder body, 16, mounting box, 17, electricity Dynamic motor, 18, switch, 19, driving gear, 20, driven gear, 21, push rod, 22, hollow axle, 23, bearing, 24, limited cover.
Detailed description of the invention
For the technical characterstic of this programme can be clearly described, below by detailed description of the invention, this programme is illustrated.
Embodiment 1:
A kind of detachable toothpaste tube of double end as shown in Figure 1, including internal sliding conveyor front barrel 1 and the rear cylinder body 15 having piston 2, and Between conveyor front barrel 1 and rear cylinder body 15 and the pusher that piston 2 moves axially can be promoted along conveyor front barrel 1 and rear cylinder body 15, Conveyor front barrel 1 and rear cylinder body 15 are provided with flat paste outlet 11 and the sealing lid sealed by paste outlet 11 away from one end of pusher 12。
Pusher in the present embodiment includes the installation that two ends are threaded connection respectively with conveyor front barrel 1, rear cylinder body 15 Seat 3, is provided with air cavity 14 in mounting seat 3 and cross section is less than air cavity 14 and the passage of calming the anger by air cavity 14 with atmosphere, calms the anger Sliding in passage have displacer 10, displacer 10 offers the air inlet running through upper and lower end face, is provided with in air inlet Air inlet is towards the check valve 7 of air, and gas can only be entered by outside calms the anger in passage, and the gas in passage of calming the anger cannot pass through Check valve 7 flows out.Displacer 10 is connected with the button 4 being positioned at outside mounting seat 3 also by depression bar, and depression bar is socketed with connection Button 4 and the spring 6 of mounting seat 3, unclamp hands after pressing the button 4, and button 4 is upspring reset under the effect of spring 6.
The end that passage of calming the anger connects with air cavity 14 is sealed by the seal 9 being connected with mounting seat 3 by holding out against spring 13, Seal 9 holds out against passage end opening of calming the anger under the effect holding out against spring 13, the reliability sealed for convenience of processing and guarantee, calms the anger Channel cross-section is circular, and seal 9 is more than the spheroid of channel radius of calming the anger for radius.
Be additionally provided with two slideways connected with air cavity 14 in mounting seat 3, in two slideways respectively sliding have with conveyor front barrel 1, The push rod 5 that piston 2 in rear cylinder body 15 is affixed.
In order to facilitate piston 2 to reclaim when recycling, mounting seat 3 is additionally provided with putting of connection air cavity 14 and air Gas passage, bleed passage is provided with plug 8 with one end of atmosphere.
During use, being first turned on the sealing lid of toothpaste one end to be used, press button 4, piston 10 moves down, seal 9 depart from passage of calming the anger under the effect of compressed gas, and compressed gas enters slideway through air cavity 14, do not beat owing to one end seals lid Opening, compressed gas promotes the push rod sealing lid open mode one end to move, and is extruded by toothpaste by piston, unclamps pressing button Hands, spring 6 is by button 4 jack-up, and displacer moves the most outward, now hold out against spring 13 seal is withstood on again calm the anger logical Road end opening, in displacer moving process outward, extraneous air is entered by check valve and calms the anger in passage.After in cylinder, toothpaste is finished, Being pulled down by cylinder front and back and be carried out, the toothpaste tube after cleaning can be utilized again.When piston is regained, first plug is opened, Piston is pushed in situ, it is not necessary to dismounting displacer.
Embodiment 2:
The present embodiment is from the different of embodiment 1, the pusher in the present embodiment include two ends respectively with conveyor front barrel 1, after The mounting box 16 that cylinder 15 is affixed, is installed with electro-motor 17 and the hollow axle being rotated by electro-motor 17 in mounting box 16 22, hollow axle 22 is installed with driven gear 20, the output shaft of electro-motor 17 is installed with the master engaged with driven gear 20 Moving gear 19.The switch 18 of electro-motor 17 is arranged on mounting box surface, can be three separate button, control electronic horse respectively Reach rotating forward, invert and stop, it is also possible to for slide block type switch, three diverse locations that slide forward and reverse and stop three kinds The control of state.Hollow axle 22 is connected with mounting box 16 by bearing 23, has been threaded connection respectively with front in hollow axle 22 The push rod 21 that piston 2 in cylinder 1, rear cylinder body 15 is affixed.
Pusher in the present embodiment also includes that limiting hollow axle 22 occurs the stopping means of axial displacement, stopping means Including being threadably secured in the limited cover 24 at hollow axle 22 two ends, limited cover 24 is provided with more than hollow axle 22 internal diameter is convex Platform, push rod 21 is through limited cover 24.
When using the toothpaste tube of the present embodiment, press electro-motor switch 18, drive hollow axle to rotate by gear drive, Hollow axle is threaded connection with push rod 21, and hollow axle can not occur axial displacement, and therefore push rod produces axial displacement, Driving one of them piston 2 to be displaced outwardly, extruded by toothpaste, the piston of the other end moves the most inward, will not be extruded by toothpaste. By switch 18 electro-motor turned to change, then the toothpaste in the other end can be extruded, to meet different demands.
Certainly, described above is also not limited to the example above, the present invention without describe technical characteristic can by or Employing prior art realizes, and does not repeats them here;Above example and accompanying drawing are merely to illustrate technical scheme not It is limitation of the present invention, with reference to preferred embodiment the present invention being described in detail, the ordinary skill people of this area Member should be appreciated that change that those skilled in the art are made in the essential scope of the present invention, retrofits, adds Or replace without departure from spirit of the invention, also should belong to the claims of the present invention.

Claims (10)

1. the detachable toothpaste tube of double end, it is characterised in that: include that internal slipping has the conveyor front barrel (1) of piston (2) and rear cylinder Body (15), and be positioned between described conveyor front barrel (1) and rear cylinder body (15) and described piston (2) can be promoted along conveyor front barrel (1) and The pusher that rear cylinder body (15) moves axially, described conveyor front barrel (1) and rear cylinder body (15) are arranged away from one end of pusher There are paste outlet (11) and the sealing lid (12) sealed by paste outlet (11).
A kind of detachable toothpaste tube of double end the most according to claim 1, it is characterised in that: described pusher includes two ends Mounting seat (3) affixed with conveyor front barrel (1), rear cylinder body (15) respectively, is provided with air cavity (14) and cross section in described mounting seat (3) Less than air cavity (14) and by the passage of calming the anger of air cavity (14) Yu atmosphere, described in calm the anger and sliding in passage have displacer (10), described displacer (10) offers the air inlet running through upper and lower end face, in described air inlet, is provided with air inlet court To the check valve (7) of air, described in calm the anger end that passage connects with air cavity (14) by by holding out against spring (13) and mounting seat (3) seal (9) connected seals;Two slideways connected with air cavity (14) it are additionally provided with in described mounting seat (3), described two Sliding respectively in slideway have the push rod (5) affixed with the piston (2) in conveyor front barrel (1), rear cylinder body (15).
A kind of detachable toothpaste tube of double end the most according to claim 2, it is characterised in that channel cross-section of calming the anger described in: is Circle, described seal (9) is the spheroid that radius is more than channel radius of calming the anger.
A kind of detachable toothpaste tube of double end the most according to claim 2, it is characterised in that: described displacer (10) passes through Depression bar is connected with and is positioned at the button (4) that mounting seat (3) is outside, described depression bar is socketed with and connects button (4) and mounting seat (3) Spring (6).
A kind of detachable toothpaste tube of double end the most according to claim 2, it is characterised in that: described conveyor front barrel (1) and rear cylinder Body (15) is all connected with mounting seat (3) by screw thread.
A kind of detachable toothpaste tube of double end the most according to claim 2, it is characterised in that: described mounting seat also sets on (3) Being equipped with the bleed passage of connection air cavity (14) and air, described bleed passage is provided with plug (8) with one end of atmosphere.
A kind of detachable toothpaste tube of double end the most according to claim 1, it is characterised in that: described pusher includes two ends Mounting box (16) affixed with conveyor front barrel (1), rear cylinder body (15) respectively, is installed with electro-motor (17) in described mounting box (16) With the hollow axle (22) being rotated by described electro-motor (17), described hollow axle (22) passes through bearing (23) and mounting box (16) connect, be threaded connection affixed with the piston (2) in conveyor front barrel (1), rear cylinder body (15) respectively in hollow axle (22) Push rod (21);Described pusher also includes that limiting hollow axle (22) occurs the stopping means of axial displacement.
A kind of detachable toothpaste tube of double end the most according to claim 7, it is characterised in that: described stopping means includes passing through It is screwed on the limited cover (24) at hollow axle (22) two ends, described limited cover (24) is provided with more than hollow axle (22) internal diameter Boss, described push rod (21) pass limited cover (24).
A kind of detachable toothpaste tube of double end the most according to claim 7, it is characterised in that: described hollow axle (22) is upper fixed There is driven gear (20), the output shaft of described electro-motor (17) is installed with the driving tooth engaged with described driven gear (20) Wheel (19).
A kind of detachable toothpaste tube of double end the most according to claim 1, it is characterised in that: described paste outlet (11) is flat Shape paste outlet.
CN201610674865.5A 2016-08-17 2016-08-17 A kind of detachable toothpaste tube of double end Active CN106219076B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610674865.5A CN106219076B (en) 2016-08-17 2016-08-17 A kind of detachable toothpaste tube of double end

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610674865.5A CN106219076B (en) 2016-08-17 2016-08-17 A kind of detachable toothpaste tube of double end

Publications (2)

Publication Number Publication Date
CN106219076A true CN106219076A (en) 2016-12-14
CN106219076B CN106219076B (en) 2017-07-11

Family

ID=57552873

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610674865.5A Active CN106219076B (en) 2016-08-17 2016-08-17 A kind of detachable toothpaste tube of double end

Country Status (1)

Country Link
CN (1) CN106219076B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107539608A (en) * 2017-08-31 2018-01-05 广西驰胜农业科技有限公司 A kind of Tooth paste extruder
CN113303279A (en) * 2021-07-02 2021-08-27 马国凤 Cylindrical fish tank inner wall cleaning device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011512306A (en) * 2008-02-22 2011-04-21 イェチャン カンパニー リミテッド Air pump type actuator and container having the same
CN202987781U (en) * 2012-06-26 2013-06-12 张鑫 Double-piston toothpaste

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011512306A (en) * 2008-02-22 2011-04-21 イェチャン カンパニー リミテッド Air pump type actuator and container having the same
CN202987781U (en) * 2012-06-26 2013-06-12 张鑫 Double-piston toothpaste

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107539608A (en) * 2017-08-31 2018-01-05 广西驰胜农业科技有限公司 A kind of Tooth paste extruder
CN107539608B (en) * 2017-08-31 2019-07-26 丁丽军 A kind of Tooth paste extruder
CN113303279A (en) * 2021-07-02 2021-08-27 马国凤 Cylindrical fish tank inner wall cleaning device

Also Published As

Publication number Publication date
CN106219076B (en) 2017-07-11

Similar Documents

Publication Publication Date Title
CN206366550U (en) A kind of fully automatic stereo rolling-brush cleaning device
CN204878841U (en) Pipe clamp valve
CN106219076A (en) A kind of detachable toothpaste tube of double end
CN1935598B (en) Multifunctional hose drilling machine aluminium foil sealing capping machine
CN201502857U (en) Novel electric dry grease lubricating pump
CN108533727A (en) Self-complementary machine oil chain drum
CN204477115U (en) A kind of novel clutch master cylinder assembly
CN116765076A (en) Quick cleaning equipment of crashproof bucket for bridge construction
CN202129197U (en) Check adhesive dispensing valve of piston
CN107726028A (en) The control method that waste oil collection device, structure and bearing waste grease are collected
CN114215907B (en) Dual-motor control hydraulic brake with parking function
CN105690835A (en) Extrusion device for plastic bottles
CN210511007U (en) Piston type liquid filling gun
CN108613008B (en) Conveying device for robot oil supply
CN201502853U (en) Grease refueling gun
CN113819111A (en) Lorry-mounted crane telescopic arm oil cylinder capable of reducing pulling damage to inner wall of piston rod
CN113618013A (en) Direct-current electric hand riveter
CN112723287A (en) Anti-pollution filling head cleaning device for lubricating oil filling
CN108674832A (en) A kind of lotion pump
CN2245562Y (en) Waxing machine for vehicle and motorcycle
CN205641326U (en) Can prolong humidifier of spray time
CN205949126U (en) Annotate agent rifle
CN210930127U (en) Combined toothpaste and toothbrush bottle
CN109228486A (en) A kind of continuous pressure tank machine
CN204254227U (en) Oil gun

Legal Events

Date Code Title Description
C06 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