KR101796002B1 - Vacuum pipe clamp - Google Patents

Vacuum pipe clamp Download PDF

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Publication number
KR101796002B1
KR101796002B1 KR1020160031501A KR20160031501A KR101796002B1 KR 101796002 B1 KR101796002 B1 KR 101796002B1 KR 1020160031501 A KR1020160031501 A KR 1020160031501A KR 20160031501 A KR20160031501 A KR 20160031501A KR 101796002 B1 KR101796002 B1 KR 101796002B1
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KR
South Korea
Prior art keywords
fastening
clamp
nut
hole
bolt
Prior art date
Application number
KR1020160031501A
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Korean (ko)
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KR20170107775A (en
Inventor
한효신
장성현
염인수
Original Assignee
한효신
장성현
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Priority to KR1020160031501A priority Critical patent/KR101796002B1/en
Publication of KR20170107775A publication Critical patent/KR20170107775A/en
Application granted granted Critical
Publication of KR101796002B1 publication Critical patent/KR101796002B1/en

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    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • F16L23/04—Flanged joints the flanges being connected by members tensioned in the radial plane
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L21/00—Joints with sleeve or socket
    • F16L21/06—Joints with sleeve or socket with a divided sleeve or ring clamping around the pipe-ends
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L21/00—Joints with sleeve or socket
    • F16L21/08—Joints with sleeve or socket with additional locking means
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • F16L23/04—Flanged joints the flanges being connected by members tensioned in the radial plane
    • F16L23/08—Flanged joints the flanges being connected by members tensioned in the radial plane connection by tangentially arranged pin and nut
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
    • H01L21/67005—Apparatus not specifically provided for elsewhere

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Clamps And Clips (AREA)

Abstract

The present invention relates to a vacuum piping clamp, and more particularly, to a clamp for connecting vacuum piping used in a semiconductor manufacturing process or the like, a clamping state can be firmly maintained even by vibration or external impact of a vacuum pipe, Even if the fastening bolts are not correctly inserted in the process of fastening, the nut automatically changes into the angle of the fastening bolt, so that fastening of the fastening bolt can be made easier, so fast and accurate clamping is possible even in a tight space To a new type of clamp for a vacuum piping.

Description

[0001] The present invention relates to a vacuum pipe clamp,

The present invention relates to a vacuum piping clamp, and more particularly, to a clamp for connecting vacuum piping used in a semiconductor manufacturing process or the like, a clamping state can be firmly maintained even by vibration or external impact of a vacuum pipe, Even if the fastening bolts are not correctly inserted in the process of fastening, the nut automatically changes into the angle of the fastening bolt, so that fastening of the fastening bolt can be made easier, so fast and accurate clamping is possible even in a tight space To a new type of clamp for a vacuum piping.

Generally, a process of depositing a thin film on a wafer or etching a thin film deposited on a wafer in a semiconductor manufacturing process or the like is a process in which a noxious gas such as silane, arsine, boron chloride, And a large amount of reaction by-product gas containing various kinds of ignitable gases, corrosive foreign substances and toxic components is generated in the process chamber during the process.

Most toxic chemical gases are supplied from chemical gas supply systems to semiconductor manufacturing equipment via piping that is resistant to corrosion and chemical resistance. In this case, it is ideal to connect the piping for connection between the gas supply system and the semiconductor manufacturing apparatus with one piping having no joints. However, in realistic aspects such as the piping transportation, installation, and maintenance, In practice, the pipes are connected to each other and used as an exhaust line.

Here, the exhaust line is formed by connecting the pipe and the pipe to each other, and a flange extending outward is formed at one end of the pipe which is in contact with each other. Therefore, in forming the exhaust line by connecting these two pipes, it is important that the respective flanges are connected and fixed so that the exhaust gas does not leak.

Therefore, a pipe connection clamp is used to tightly couple the flanges, which are the joint portions of the pipe, with each other.

However, since the piping of the exhaust line is connected to the vacuum pump which makes the chamber vacuum, the vacuum state of the pipe is maintained by the operation of the vacuum pump. The vibration due to the operation of the vacuum pump is transmitted to the pipe, .

As the vibration of the pipe continues, the fastening state of the clamping nut of the clamp is gradually released and the clamp is loosened, so that there is a problem that the hermetic connection state of the vacuum pipe is not achieved.

A clamp used for vacuum piping of a semiconductor manufacturing facility as described above is disclosed in Japanese Patent Application Laid-Open No. 10-1398314 (registered May 15, 2014)

The left body 100 and the right body 200 of the clamp are fastened by the rivet 800 and the fastening of the pipe flange 910 is facilitated by one-touch operation by the tension of the leaf spring 300 And the threaded portion 640 of the lock lever 600 and the thread 510 of the hexagonal wrench bolt 500 are tightly locked by the pitch and the centering of the inner circumference of the clamp 900, The protrusions 110 and 210 formed in the shape of a pipe are configured to firmly bind and fix the pipe flange 910 and can be used as a handle so as to reduce the design weight and improve the industrial competitiveness. , 250).

As another conventional technique, a clamping device for connecting pipes is disclosed in Patent Publication No. 0-1200719 (registered on Nov. 05, 2012)

 In constructing the clamping device used in semiconductor manufacturing equipment,

A first rotary member having one side connected to the upper side of the connecting member and the first hinge pin and the other side formed with a fitting groove into the front side and having both side surfaces communicating with each other;

A second rotary member having one side connected to the lower side of the connecting member and the second hinge pin and the other side having a fixing hole on both sides;

A fastening bolt which is hinged to a fastening hole of the second rotary member by a fastening pin and has a spiral portion at an upper portion thereof and is fitted into a fitting groove of the first rotary member;

A nut fastened to the threaded portion of the fastening bolt and having a plurality of loosening preventing grooves formed on the outer periphery thereof;

A fitting hole is formed on one side of the first rotating member so as to be rotatably fixed to a fixing member penetrating from the upper surface of the first rotating member to the long hole vertically from the upper surface of the first rotating member, And a locking projection is formed on the rear surface of the movable member so that the locking projection is selectively engaged with the locking preventing groove of the nut inserted in the fitting groove.

An elastic member which is located on the bottom surface of the operation member and fixed by the fixing member, one of which is caught by the engagement protrusion of the operation member and the other of which is supported by the inner surface of the fitting groove of the first rotation member;

A rotary knob is provided at both ends of a connection portion penetrating the slot of the first rotating member and an operating member having a cam portion for operating a protrusion of the movable member is formed around one of the outer sides of the connection portion.

However, in the clamp having the above-described structure, since the bolts and nuts which are threaded for fastening the clamps are always aligned in the same line in the fastening process, the fastening of the screws is smooth so that it is difficult to fasten the clamps in the narrow space. The connection and sealing of the connection portion of the vacuum pipe can not be guaranteed.

In addition, the exhaust line fixing clamp device disclosed in Japanese Unexamined Patent Application Publication No. 10-2005-0078037 (published on Aug. 04, 2005), Patent Document 10-2009-0020126 (Release date: February 26, 2009) (Registered on October 11, 2013), a vacuum piping clamp, and the like.

In these devices, bolts and nuts for fastening the clamps must be aligned in the same line before tightening, so that it is difficult to install the clamps in a narrow and complicated installation site and the fastening process is not performed frequently There is a problem.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a clamp for connecting vacuum pipes used in semiconductor manufacturing processes, , Even if the fastening bolt is not correctly inserted in the process of fastening the clamp, the nut automatically changes to the inflow angle of the fastening bolt so that the screw fastening of the fastening bolt can be made easier so that even in a narrow space where clamping is difficult, And to provide a new type of clamp for a vacuum piping which can secure clamping of the clamp.

It is an object of the present invention to provide a clamp for a vacuum piping in which the outer circumferential surface of each flange of a vacuum piping connected to each other is fixed in a wrapping manner,

And a bolt fastening hole 14 connected to the fitting hole 15 on the other side is formed in a semicircular shape in which a fitting groove 11 into which the flanges are fitted together is formed, A first clamp body 10,

The first clamp body 10 is symmetrical with the first clamp body 10 and has an insertion groove 21 into which the flanges are inserted. An opening groove 22 communicating with the hole 23 and a nut assembly 24 A second clamp body 20 having a semicircular shape formed integrally with the first clamp body 20,

A pair of through holes 31 inserted into the open grooves 12 and 22 and penetrating to the side are positioned on the same line as the holes 13 and 23 and fixed by the connecting pin 32, A connecting link 30 rotatably connecting the first clamp body 10 and the second clamp body 20,

A bolt head 411 and a plurality of engaging grooves 412, a guide 413, an engaging groove 414 and a threaded portion 415 are assembled to the bolt fastening hole 14 of the first clamp body 10, And a female screw hole 423 is formed at a central portion of the cylindrical body 421 by being assembled to the nut assembly hole 14 of the second clamp body 20. The fastening bolt 41 and the conical portion 416 are integrally formed with each other, And a fastening means 40 having a hole 425 to which the fastening portion 424 is coupled at one side and a nut 42 to which the guide pin 426 is assembled at the other side,

The threaded portion 415 of the fastening bolt 41 is inserted into the female screw hole 423 of the nut 42 in the process of screwing the fastening bolt 41 with the nut 42, The body 421 of the nut 42 automatically rotates within the range of the seat groove 25 when the engagement angle of the nut 42 is poor, (421) is rotated to induce accurate screw tightening.

The nut 42 further includes an extended portion 422 extending obliquely to the outside of the female screw hole 423 at a front portion of the female screw hole 423.

And a pair of washers 43 having a latching protrusion 431 are inserted into the guide 413 of the fastening bolt 41.

The bolt head 411 of the fastening bolt 41 has a hexagonal shape.

As described above, in the clamp for vacuum piping according to the present invention, the fastening bolt coupled to the first clamp body and the nut coupled to the second clamp body are fastened to each other by a plurality of fastening bolts formed on the outer side of the fastening bolt, So that the fastening bolt is prevented from rotating in the reverse direction by the vibration generated in the vacuum pipe, and thus the fastening force of the clamp can be firmly maintained.

In addition, the nut to be assembled to the second clamp body is formed to be able to rotate within a partial range in a state where the nut is assembled to the second clamp body, so that even if the fastening bolt fastened to the nut is not perpendicular to the female screw fastener of the nut, The fastening bolt can be screwed to the nut easily by rotating the nut to fit the angle of the inlet, so that the clamp can be easily fastened even in a complicated and narrow space.

1 is a perspective view of a vacuum piping clamp according to the present invention;
Fig. 2 is an exploded perspective view of a vacuum piping clamp according to the present invention. Fig.
FIG. 3 is a partial cross-sectional view illustrating a state in which the lower housing and the clamping nut are engaged with each other among the clamps for vacuum piping according to the present invention
4 is a cross-sectional view of the vacuum piping clamp according to the present invention
5 is a cross-sectional view of the vacuum piping clamp according to the present invention in a closed state

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. It does not mean anything.

In addition, the sizes and shapes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation, and the terms defined specifically in consideration of the configuration and operation of the present invention may vary depending on the intention or custom of the user, operator It should be noted that the definitions of these terms should be made on the basis of the contents throughout this specification.

1 is a perspective view of a clamp for a vacuum piping according to the present invention, Fig. 2 is an exploded perspective view of a clamp for a vacuum piping according to the present invention, Fig. 3 is a perspective view of a clamp for a vacuum piping according to the present invention, Sectional view showing the engagement state of the fastening nut with the fastening nut.

As shown in the figure, the clamp 100 for vacuum piping according to the present invention has a semi-circular first clamp body 10 and a second clamp body 20 rotatably connected by a connecting link 30 on one side, The clamping means 40 is formed to open and close the clamp 100.

The first and second clamp bodies 10 and 20 are directly connected to a joint portion of a vacuum pipe (not shown), that is, a portion where each flange of the two vacuum pipes abuts (hereinafter referred to as a 'flange' And are symmetrical so that they can be coupled to each other in a circular shape when fastened to the vacuum piping.

In the inner circumferential surfaces of the first and second clamp bodies 10 and 20, fitting grooves 11 and 21 are formed continuously in the circumferential direction in which the respective flanges of the vacuum pipes connected to each other when the vacuum pipes are connected .

Each of the first and second clamp bodies 10 and 20 is formed with open grooves 12 and 22 through which the connecting link 30 is inserted and connected to both sides of the open grooves 12 and 22. [ Holes 13 and 23 into which the pin 32 is inserted are formed.

A bolt fastening hole 14 for fastening the fastening bolt 41 is formed in the other side of the first clamping body 10 so as to communicate with the fitting hole 15, And a nut assembly 24 into which the nut 42 is inserted is connected to the seating groove 25 on one side.

The connection link 30 has an elliptical shape and a pair of through holes 31 are formed at the side to connect the both side through holes 31 of the connection link 30 to the first and second clamp bodies 10, The through holes 31 and the holes 13 and 23 are formed so as to communicate with each other on the same line by inserting the through holes 31 and the openings 12 and 22 formed in the openings 20 and 20, 1 and the second clamp bodies 10 and 20 so that the bodies 10 and 20 are rotatably connected.

On the other hand, fastening means (40) for controlling the rotation of the first and second clamp bodies (10, 20) are formed at the positions where the connection links (30) are formed.

The fastening means 40 includes a fastening bolt 41 for fastening the bolt fastening hole 14 of the first clamping body 10 and a nut fastened to the nut fastening hole 14 of the second clamping body 20, (42) are engaged with each other.

The fastening bolt 41 is formed integrally with a bolt head 411 having a rectangular shape and a plurality of engaging grooves 412, a guide 413, an engaging groove 414, a threaded portion 415 and a conical portion 416 from above. And a pair of washers 43 having an engaging protrusion 431 are inserted into the guide 413 and the snap ring 44 is fastened to the engaging groove 414.

The end of the clamping pin 45 into which the fitting hole 15 formed in the bolt fastening hole 14 of the first clamping body 10 is inserted is caught by the fastening bolt 41 of the fastening bolt 41 Thereby preventing the fastening bolt 41 from rotating spontaneously.

The nut 42 has a female screw hole 423 having an enlarged portion 422 at a central portion of a cylindrical body 421 and has a hole 425 to which a coupling portion 424 is coupled and a guide pin 426 are assembled and assembled.

3, the nut 42 has a guide pin 426 protruding from the body 421 when the body 421 is inserted into the nut assembly 24 formed in the second clamp body 20, The nut body 421 is assembled so as to be rotatable within the range of the seating groove 25 and the coupling portion 424 is inserted into the hole 425 from the other side to be fixed to the second clamp body 20 so as to prevent the nut 42 from coming off.

Hereinafter, the operation of the vacuum piping clamp according to the present invention will be described in detail with reference to FIGS. 4 to 5. FIG.

FIG. 4 is a cross-sectional view of a vacuum piping clamp according to the present invention in an open state, and FIG. 5 is a cross-sectional view of a vacuum piping clamp according to the present invention in a closed state.

The fastening bolt 41 is assembled to the bolt fastening hole 14 of the first clamping body 10 so as to prevent the fastening bolt 41 from coming off. The fastening bolt 41 is inserted into the bolt fastening hole 14 and the snap ring 44 is inserted into the fastening hole 414 so that the fastening bolt 41 is rotatable.

The fastening bolt 41 is formed in a state in which the end portion of the fastening pin 45 inserted into the fitting groove 15 of the bolt fastening hole 14 is engaged with the fastening groove 412, So that it can rotate.

A pair of flanges (not shown) connected to the pipe are connected to the inside of the clamp 100 in the state where the fastening bolts 41 are assembled to the first clamp body 10 to fit the fitting grooves 11 and 21 The threaded portion 415 of the fastening bolt 41 is screwed to the female screw hole 423 of the nut 42 in a state where the fastening bolt 41 is seated and the first clamp body 10 is rotated so as to enclose and seal the outer peripheral surface of the flange Tighten the pipe flange by tightening.

At this time, in the process of inserting the fastening bolt 41 into the nut 42, the conical portion 416 formed at the end of the fastening bolt 41 and the extension portion 422 formed in the nut 42 The nut 42 is guided in the direction of the female screw hole 423 of the nut 42 and the conical portion 416 is secondarily inserted into the female screw hole 423, 25 so that the fastening bolt 41 and the nut 42 can be screwed into each other with the correct coupling by rotating the nut body 421 in accordance with the inflow angle of the fastening bolt 41. [

The nut 42 is rotated according to the angle of entry of the fastening bolt 41 to ensure smooth screw tightening. The fastening position of the clamp is narrow, And the clamping force of the clamp can be ensured by a correct coupling.

The fastening bolt 41 fastened to the fastening bolt 41 is engaged with the fastening groove 412 so that the end portion of the fastening pin 45 protruding from the fitting hole 15 is caught in the fastening groove 412 to prevent natural rotation due to the vibration of the fastening bolt 41 So that a firm engagement state can be maintained even in an environment of continuous vibration.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the invention, It is obvious that the claims fall within the scope of the claims.

10: first clamp body 11: fitting groove
12: open groove 13: hole
14: bolt fastening hole 15:
20: second clamp body 21: fitting groove
22: open groove 23: hole
24: nut assembly 25: seat groove
30: connection link 31: through hole
32: connecting pin 40: fastening means
41: fastening bolt 411: bolt head
412: Retaining groove 413: Guide
414: Retaining groove 415:
416: conical part 42: nut
421: body 422:
423: Female thread ball 424:
425: hole 426: guide pin
43: washer 44: snap ring
45:

Claims (4)

A clamp for a vacuum piping in which the outer periphery of each flange of a vacuum piping connected to each other is enclosed,
And a bolt fastening hole 14 connected to the fitting hole 15 on the other side is formed in a semicircular shape in which a fitting groove 11 into which the flanges are fitted together is formed, A first clamp body 10,
The first clamp body 10 is symmetrical with the first clamp body 10 and has an insertion groove 21 into which the flanges are inserted. An opening groove 22 communicating with the hole 23 and a nut assembly 24 A second clamp body 20 having a semicircular shape formed integrally with the first clamp body 20,
A pair of through holes 31 inserted into the open grooves 12 and 22 and penetrating to the side are positioned on the same line as the holes 13 and 23 and fixed by the connecting pin 32, A connecting link 30 rotatably connecting the first clamp body 10 and the second clamp body 20,
A bolt head 411 and a plurality of engaging grooves 412, a guide 413, an engaging groove 414 and a threaded portion 415 are assembled to the bolt fastening hole 14 of the first clamp body 10, And a female screw hole 423 is formed at a central portion of the cylindrical body 421. The female screw hole 423 is formed in the center of the cylindrical body 421, And a fastening means 40 having a hole 425 to which the fastening portion 424 is coupled at one side and a nut 42 to which the guide pin 426 is assembled at the other side,
The threaded portion 415 of the fastening bolt 41 is inserted into the female screw hole 423 of the nut 42 in the process of screwing the fastening bolt 41 with the nut 42, The body 421 of the nut 42 automatically rotates within the range of the seat groove 25 when the engagement angle of the nut 42 is poor, (421) is rotated to induce accurate screw tightening.
The method according to claim 1,
The clamp for a vacuum piping according to claim 1, further comprising an extension part (422) extending obliquely outwardly of the female screw hole (423) at a front portion of the female screw hole (423) of the nut (42).
The method according to claim 1,
Wherein a pair of washers (43) having a latching protrusion (431) are inserted into the guide (413) of the fastening bolt (41).
The method according to claim 1,
Wherein the bolt head (411) of the fastening bolt (41) has a hexagonal shape.
KR1020160031501A 2016-03-16 2016-03-16 Vacuum pipe clamp KR101796002B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020160031501A KR101796002B1 (en) 2016-03-16 2016-03-16 Vacuum pipe clamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160031501A KR101796002B1 (en) 2016-03-16 2016-03-16 Vacuum pipe clamp

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KR20170107775A KR20170107775A (en) 2017-09-26
KR101796002B1 true KR101796002B1 (en) 2017-12-01

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200093950A (en) * 2019-01-29 2020-08-06 이영일 A pipe clamp for torgue regulation
KR20220001151A (en) * 2020-06-29 2022-01-05 임재각 Apparatus to prevent loosening of the valve

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100791644B1 (en) 2007-09-18 2008-01-03 주식회사 우리 Combination structure of exhaust gas reduction apparatus for vehicle with clamp
KR101017961B1 (en) 2010-07-27 2011-03-02 주식회사 엠아이 Clamp for vacuum line
KR101194642B1 (en) 2010-04-28 2012-10-29 신경식 Clamp for easy to assembling
KR101200719B1 (en) 2012-05-23 2012-11-12 김형동 Clamping device for connecting pipes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100791644B1 (en) 2007-09-18 2008-01-03 주식회사 우리 Combination structure of exhaust gas reduction apparatus for vehicle with clamp
KR101194642B1 (en) 2010-04-28 2012-10-29 신경식 Clamp for easy to assembling
KR101017961B1 (en) 2010-07-27 2011-03-02 주식회사 엠아이 Clamp for vacuum line
KR101200719B1 (en) 2012-05-23 2012-11-12 김형동 Clamping device for connecting pipes

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200093950A (en) * 2019-01-29 2020-08-06 이영일 A pipe clamp for torgue regulation
KR102172670B1 (en) * 2019-01-29 2020-11-02 이영일 A pipe clamp for torgue regulation
KR20220001151A (en) * 2020-06-29 2022-01-05 임재각 Apparatus to prevent loosening of the valve
KR102411525B1 (en) * 2020-06-29 2022-06-20 임재각 Apparatus to prevent loosening of the valve

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