CN108071652A - Nut fastener - Google Patents
Nut fastener Download PDFInfo
- Publication number
- CN108071652A CN108071652A CN201611032706.1A CN201611032706A CN108071652A CN 108071652 A CN108071652 A CN 108071652A CN 201611032706 A CN201611032706 A CN 201611032706A CN 108071652 A CN108071652 A CN 108071652A
- Authority
- CN
- China
- Prior art keywords
- nut
- annular element
- recess
- fastener
- height
- 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.)
- Pending
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000004677 Nylon Substances 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241000219098 Parthenocissus Species 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/10—Locking of screws, bolts or nuts in which the locking takes place after screwing down by a plate, spring, wire or ring immovable with regard to the bolt or object and mainly perpendicular to the axis of the bolt
- F16B39/106—Locking of screws, bolts or nuts in which the locking takes place after screwing down by a plate, spring, wire or ring immovable with regard to the bolt or object and mainly perpendicular to the axis of the bolt with a deformable locking element, e.g. disk or pin above the bolt head or nut, flattened into a hole or cavity within which the bolt head or nut is positioned
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/10—Locking of screws, bolts or nuts in which the locking takes place after screwing down by a plate, spring, wire or ring immovable with regard to the bolt or object and mainly perpendicular to the axis of the bolt
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
Abstract
A kind of nut fastener is provided, including：First nut forms the first recess on the inside edge of the end surface of first nut；Annular element, the annular element are at least partially accommodated into first recess；Second nut, second nut is configured to be suitable for coaxially being screwed on same screw rod with first nut, and squeezes the annular element and the annular element is deformed, to fill the gap between the annular element and the external screw thread of the screw rod.The nut fastener of the present invention can realize more stable and reliable anti-loosening and simple in structure, the easily fabricated and assembling to nut.
Description
Technical field
The present invention relates to a kind of nut fastener more particularly to a kind of it can stablize locking nut fastener.
Background technology
Nut fastener is applied in all trades and professions of connection fastening demand, such as in vehicle, building machinery, agricultural
It is all widely used in machinery, manufacture machinery etc..It is severe due to working environment in large-scale engineering machinery or engineering truck
And the effect of heavy load so that nut fastener thereon is subject to the vibration of all directions and impacting for load, this causes spiral shell
Mother is easier to loosen, so as to which the reduction of fastener function be caused even to fail.Cause very big security risk.
Currently used fastener locking method generally comprises the locking of non-removable locking scheme and increasing friction force
Scheme.Non-removable locking scheme is changed into detachable threaded connection not using welding, bonding or rushing a little modes such as riveting
It is detachable to be threadedly coupled.In non-removable locking scheme, threaded fastener cannot be reused, and troublesome in poeration, be usually used in
Some important events for requiring anti-loosening property high and to be not required to dismounting.The locking scheme of increasing friction force, which utilizes, increases bolt (spiral shell
Nail) head and nut end face frictional force method it is locking to achieve the purpose that.The locking scheme of increasing friction force is from space
Limitation, can dismantle repeatedly, but reliability is poor, in work after a certain period of time, can reduce anti-loosing effect because of reasons such as vibrations.
The content of the invention
Technical problem solved by the invention is to provide a kind of nut fastener, and can realize can to the more stable of nut
That leans on is anti-loosening, and simple in structure, easily fabricated and assembling.
Embodiment according to an aspect of the present invention provides a kind of nut fastener, including：First nut, described
The first recess is formed on the inside edge of the end surface of one nut；Annular element, the annular element are at least partially accommodated into
In first recess；Second nut, second nut are configured to be suitable for and first nut coaxially screw thread knot
It closes on same screw rod, and squeezes the annular element and the annular element is deformed, to fill the annular element and the spiral shell
Gap between the external screw thread of bar.
A kind of exemplary embodiment according to the present invention, wherein：In the axial direction, the annular element thickness is less than institute
State the height of the first recess；And second nut includes：Main part；Protrusion, the protrusion is from the main part
Extension, the protrusion are configured to be adapted to be at least partially received in first recess, to be recessed with described first
Portion, which is engaged, squeezes the annular element.
A kind of exemplary embodiment according to the present invention, wherein：In the axial direction, the thickness of the annular element is more than
The height of first recess, and the annular element is expressed in first recess by second nut completely.
A kind of exemplary embodiment according to the present invention, wherein：Second nut is opposite with first nut
The second recess is formed on the inside edge of end face；In the axial direction, it is recessed to be more than described first for the thickness of the annular element
Into the sum of the height of the height and the second recess in portion, it is recessed that the annular element is expressed to described second by second nut completely
Into in portion and first recess.
A kind of exemplary embodiment according to the present invention, wherein：First nut compared with the second nut closer to
By tightening member.
A kind of exemplary embodiment according to the present invention, wherein：Second nut compared with the first nut closer to
By tightening member.
A kind of exemplary embodiment according to the present invention, wherein, it is provided on the inner surface of the annular element and institute
State the identical internal thread of the internal thread of first, second nut.
A kind of exemplary embodiment according to the present invention, wherein, the inner surface of the annular element is smooth surface.
A kind of exemplary embodiment according to the present invention, wherein, the annular element is made of copper, aluminium or nylon.
A kind of exemplary embodiment according to the present invention, wherein, first and second nut can be hex nut, four
Angle nut or horned nut.
According to the nut fastener in above-mentioned various embodiments, can realize to the more stable and reliable anti-loosening of nut,
And simple in structure, easily fabricated and assembling.
Description of the drawings
The present invention with reference to the accompanying drawings to be further described, wherein：
Fig. 1 is the half-section diagram for the nut fastener for showing a kind of exemplary embodiment according to the present invention；
Fig. 2 is the schematic cross-sectional view shown when nut fastener shown in FIG. 1 is mounted on bolt；
Fig. 3 is the half-section diagram for showing nut fastener according to another exemplary embodiment of the present invention,；
Fig. 4 is the half-section diagram for the nut fastener for showing another exemplary embodiment according to the present invention.
Specific embodiment
It, should before being described herein although the present invention will be fully described with reference to the attached drawing containing presently preferred embodiments of the present invention
Invention described herein can be changed by understanding those of ordinary skill in the art, while obtain the technique effect of the present invention.Cause
This, it should be understood that above description is an extensive announcement for those of ordinary skill in the art, and its content does not lie in limit
Make exemplary embodiment described in the invention.
As shown in Figs 1-4, inventive concept generally according to the present invention provides a kind of nut fastener, the spiral shell
Mother fastener includes：First nut 1 forms the first recess on the inside edge of the end surface of first nut 1；Annular
Part 2, the annular element 2 are at least partially accommodated into first recess；Second nut 3, second nut 3 are constructed
Into suitable for being coaxially screwed on same screw rod with first nut 1, and the annular element 2 is squeezed so that the ring
Shape part deforms, to fill the gap between the annular element and the external screw thread of the screw rod 4.
Specifically, according to an exemplary embodiment, the inside edge of the end surface of first nut 1 is formed
First recess, first recess include bottom surface 111 and the side 112 in axial direction extended perpendicular to the bottom surface；
The annular element 2 be configured to it is deformable and suitable for first nut coaxially, be at least partially accommodated into described first
In recess, the outer surface of the annular element is configured to be suitable for being in contact with the side 112, and the first of the annular element
End face 21 is configured to be suitable for being in contact with the bottom surface of recess；Second nut 3 is configured to be suitable for and first spiral shell
Mother 1 is coaxially disposed, and the second end face 22 opposite with first end face 21 with the annular element 2 abuts against, with described the
One recess, which is engaged, squeezes the annular element 2 so that the annular element deforms, so as to fill the annular element and the spiral shell of cooperation
Gap between the external screw thread of bar 4.
It will be understood by those skilled in the art that deformable annular element is arranged between the first nut and the second nut,
Annular element is squeezed from the opposite first end face and second end face of annular element respectively by the first nut and the second nut,
And pass through the side limitation radially outer deformation of annular element of the recess of the first nut so that annular element inwardly becomes on the radial
Shape, so as to fill the gap between the external screw thread thread of the screw rod 4 of annular element and cooperation.In this way, shape between annular element and screw rod 4
Into firm connection, so as to limit the space of the activity of the nut between annular element and workpiece, inhibit loosening for the nut, then add
The fastening of superolateral nut is played and further stablizes locking effect.
An exemplary embodiment according to the present invention, nut fastener of the invention can be applied in Work machine,
Creeper tread, the connector of chassis member being used for example as in engineering truck.Due to the severe applying working condition of Work machine, using
The generation with larger vibration and larger load, especially transverse load causes the nut in nut fastener in the process
It can be loosened with the passage of usage time.Using the nut fastener of the embodiment of the present invention, it can effectively inhibit spiral shell
Female loosening, obtains better security performance.
Nut in the nut fastener can be variously-shaped, such as hex nut or tetragonal nut, shown in Fig. 1-4
The nut shown in embodiment is hex nut.
An exemplary embodiment according to the present invention, as shown in Figure 1, the thickness of the annular element 2 in axial direction
Less than the height of first recess；And second nut 3 includes：Main part 31；Protrusion 32, the protrusion 32
In axial direction extend from the main part 31 towards first nut 1, end face and the annular element of the protrusion 32
Second end face 22 abut against, the outer diameter of the protrusion 32 is constructed such that the protrusion 32 is suitable for holding at least partly
It is contained in first recess, to be engaged to squeeze the annular element with first recess.
Fig. 2 shows schematic cross-sectional view when nut fastener shown in FIG. 1 is mounted on bolt.Wherein, described second
The end face of the protrusion 32 of nut 3 gradually pushes against the second end face of annular element 2, annular element 2 during the second nut screws in
The extruding being subject to becomes larger, and lateral surface is limited be subject to the side 112 of the first recess, therefore is deformed radially inwardly and is filled out
The gap between annular element and the external screw thread thread of screw rod 4 is filled, therefore, annular element 2 is firmly bonded on the screw rod, and is led to
It crosses and pushes against the nut 1 with the contact of the bottom surface of first recess, limited between tightening member 5 and annular element 2
Go out fixed space so that nut 1 moves back space without pine in the axial direction, reaches anti-loosing effect.
An exemplary embodiment according to the present invention, as shown in figure 3, in this embodiment, in the axial direction, institute
The thickness for stating annular element 2 is more than the height of first recess, and second nut 3 squeezes the annular element 2 completely
It is pressed onto in first recess.Specifically, the thickness in axial direction of the annular element 2 can be more recessed than described first
The height in portion goes out greatly a predetermined value, and the end face of second nut 3 and the second end face 22 of the annular element 2 abut against,
The annular element is squeezed to be engaged with first recess.The thickness of the annular element is slightly larger than the height of the first recess,
So that annular element is subject to still to be entirely accommodated in first recess after radial deformation during axial compression, which can
It is selected according to the deformation performance of the specification of nut and annular element, to ensure the end face by the second nut 3 to annular element 2
The compression of second end face 22 and so that the lateral surface of annular element is limited by the side 112 of the first recess, so as to radially-inwardly
It deforms and fills the gap between annular element and the external screw thread thread of screw rod 4.The embodiment need not form the convex of the second nut
Go out portion so that nut fastener manufacturing process is simple and practicable.
An exemplary embodiment according to the present invention, as shown in figure 4, second nut 3 and first nut 1
The second recess is formed on the inside edge of opposite end face；In the axial direction, the thickness of the annular element 2 is more than described
The annular element 2 is expressed to institute by the sum of the height of the first recess and the height of the second recess, second nut 3 completely
It states in the second recess and first recess.
Specifically, the bottom surface 331 of second recess is abutted against with the second end face 22 of the annular element, the ring
The height of first recess described in the thickness ratio in axial direction of shape part and the second recess it is height and big go out it is one predetermined
Value so that second recess is engaged with first recess, is squeezed the annular element and is caused the annular element radially
It is deformed inward.For the selected of the predetermined value, which is not easy excessive, and first is fully accommodated in annular element after pressing
In the space of recess and the second recess composition, annular element is limited be subject to the side of recess and is deformed radially inwardly.
For the exemplary embodiment, two opposing end surfaces of annular element are carried out by the bottom surface of first, second recess
It squeezes, and the side of first, second recess limits the annular element 2 outside deformation on the radial so that radially-inwardly
It deforms and fills the gap between annular element and the external screw thread thread of screw rod 4.The advantages of embodiment is, the first and second spiral shells
Mother has been respectively formed on recess portion, so as to which two nuts can form identical dimensions, facilitates manufacture.And it is not required to separate packaging, side
Just install.
An exemplary embodiment according to the present invention, as shown in Fig. 2, first nut compared with the second nut more
Close to by tightening member.However, it will be understood by those skilled in the art that according to the embodiment of another exemplary, second spiral shell
Mother is compared with the first nut closer to the anti-loosing effect that by tightening member, can equally reach fastener.
An exemplary embodiment according to the present invention is provided with and described on the inner surface of the annular element
First, the identical internal thread of the internal thread of the second nut.Annular element 3 is screwed on screw rod in installation process.However, according to another
One exemplary embodiment, the inner surface of the annular element is smooth surface.
An exemplary embodiment according to the present invention, for the shape of annular element, can be used easily deformable material
It is made, such as copper, aluminium or nylon etc..
An exemplary embodiment according to the present invention, the nut can be hex nut, tetragonal nut or plum blossom spiral shell
The various nut shapes such as mother, can realize anti-loosing effect.
1-4 describes the assembling process of nut fastener according to an embodiment of the invention below in conjunction with the accompanying drawings.With the first spiral shell
Mother 1 after screw rod 4 is inserted by the hole on tightening member 5, screws in the first nut 1 and applies close to by exemplified by tightening member 5
Annular element 2 is screwed to or is set on the screw rod 4 afterwards by pretightning force, into first recess, afterwards by the second spiral shell
Mother 3 is screwed into, and with progressively tightening for nut, the protrusion 32 of the second nut 3 enters in first recess and described in extruding
Annular element 2, so that the annular element is deformed radially inwardly.
Deformable annular element is arranged on the first spiral shell by the nut fastener described in above-mentioned various embodiments according to the present invention
Between female and the second nut, by the first nut and the second nut respectively from the opposite first end face and second end face of annular element
Annular element is squeezed, and passes through the side limitation radially outer deformation of annular element of the recess of nut so that annular element
Be deformed inward on the radial, so as to form firm connection between annular element and screw rod, and then limit annular element and workpiece it
Between nut activity space, inhibit loosening for the nut, along with the fastening of the nut in outside, play further stablize it is anti-
The effect of pine.The nut is reusable, and installation is easy with dismounting, and easily fabricated.
It will be understood to those skilled in the art that embodiment described above is all exemplary, and this field
Technical staff can make improvements, the rushing in terms of not recurring structure or principle of the structure described in various embodiments
It can be freely combined in the case of prominent.
After the preferred embodiment that the present invention will be described in detail, those skilled in the art can be apparent from,
The protection domain of appended claims is not departed from various change can be carried out under spirit with changing, and the present invention is also not only restricted to
The embodiment of examples cited embodiment in bright book.
Claims (10)
1. a kind of nut fastener, including：
First nut forms the first recess on the inside edge of the end surface of first nut；
Annular element, the annular element are at least partially accommodated into first recess；
Second nut, second nut are configured to be suitable for coaxially being screwed in same screw rod with first nut
On, and squeeze the annular element and the annular element is deformed, to fill between the annular element and the external screw thread of the screw rod
Gap.
2. nut fastener according to claim 1, wherein：
In the axial direction, the annular element thickness is less than the height of first recess；And
Second nut includes：
Main part；
Protrusion, the protrusion extend from the main part, and the protrusion is configured to be adapted to be at least partially received in
In first recess, the annular element is squeezed to be engaged with first recess.
3. nut fastener according to claim 1, wherein：
In the axial direction, the thickness of the annular element is more than the height of first recess, and second nut will
The annular element is expressed to completely in first recess.
4. nut fastener according to claim 1, wherein：
The second recess is formed on the inside edge of second nut end face opposite with first nut；
In the axial direction, the thickness of the annular element is more than the height of the height and the second recess of first recess
With, second nut by the annular element be expressed to completely second recess in first recess.
5. a kind of nut fastener according to claim 1, wherein：First nut compared with the second nut closer to
By tightening member.
6. a kind of nut fastener according to claim 1 or 2, wherein：Second nut compared with the first nut more
Close to by tightening member.
7. according to the nut fastener described in any one of claim 1-6, wherein, it is set on the inner surface of the annular element
It is equipped with the internal thread identical with the internal thread of first, second nut.
8. according to the nut fastener described in any one of claim 1-6, wherein, the inner surface of the annular element is light
Sliding surface.
9. according to the nut fastener described in any one of claim 1-8, wherein, the annular element is by copper, aluminium or nylon
It is made.
10. according to the nut fastener described in any one of claim 1-9, wherein, first and second nut can be
Hex nut, tetragonal nut or horned nut.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611032706.1A CN108071652A (en) | 2016-11-16 | 2016-11-16 | Nut fastener |
| PCT/CN2017/111102 WO2018090930A1 (en) | 2016-11-16 | 2017-11-15 | Nut fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611032706.1A CN108071652A (en) | 2016-11-16 | 2016-11-16 | Nut fastener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108071652A true CN108071652A (en) | 2018-05-25 |
Family
ID=62145267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611032706.1A Pending CN108071652A (en) | 2016-11-16 | 2016-11-16 | Nut fastener |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108071652A (en) |
| WO (1) | WO2018090930A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268380A (en) * | 2018-11-23 | 2019-01-25 | 航天精工股份有限公司 | A kind of derotation is to screw-threaded coupling combination nut |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2313763A (en) * | 1941-12-24 | 1943-03-16 | Louis E Olsen | Nut assembly |
| JP2012041938A (en) * | 2010-08-12 | 2012-03-01 | Maruemu Seisakusho:Kk | Nut loosening preventive device |
| US8496421B1 (en) * | 2010-11-09 | 2013-07-30 | Christopher C. Burton | Ferrule lock nuts |
| CN103732929A (en) * | 2011-08-03 | 2014-04-16 | 布赖恩投资有限公司 | Lock nut assembly |
| KR101468157B1 (en) * | 2014-04-24 | 2014-12-12 | 김찬수 | Loose prevention type bolt-nut assembly |
| CN204437030U (en) * | 2015-02-06 | 2015-07-01 | 洛阳理工学院 | A kind of high strength nut |
| CN206175448U (en) * | 2016-11-16 | 2017-05-17 | 孙愉后 | Nut fastener |
-
2016
- 2016-11-16 CN CN201611032706.1A patent/CN108071652A/en active Pending
-
2017
- 2017-11-15 WO PCT/CN2017/111102 patent/WO2018090930A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2313763A (en) * | 1941-12-24 | 1943-03-16 | Louis E Olsen | Nut assembly |
| JP2012041938A (en) * | 2010-08-12 | 2012-03-01 | Maruemu Seisakusho:Kk | Nut loosening preventive device |
| US8496421B1 (en) * | 2010-11-09 | 2013-07-30 | Christopher C. Burton | Ferrule lock nuts |
| CN103732929A (en) * | 2011-08-03 | 2014-04-16 | 布赖恩投资有限公司 | Lock nut assembly |
| KR101468157B1 (en) * | 2014-04-24 | 2014-12-12 | 김찬수 | Loose prevention type bolt-nut assembly |
| CN204437030U (en) * | 2015-02-06 | 2015-07-01 | 洛阳理工学院 | A kind of high strength nut |
| CN206175448U (en) * | 2016-11-16 | 2017-05-17 | 孙愉后 | Nut fastener |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268380A (en) * | 2018-11-23 | 2019-01-25 | 航天精工股份有限公司 | A kind of derotation is to screw-threaded coupling combination nut |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018090930A1 (en) | 2018-05-24 |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180525 |