KR101668313B1 - Connectable protection plate for underground line - Google Patents

Connectable protection plate for underground line Download PDF

Info

Publication number
KR101668313B1
KR101668313B1 KR1020160031849A KR20160031849A KR101668313B1 KR 101668313 B1 KR101668313 B1 KR 101668313B1 KR 1020160031849 A KR1020160031849 A KR 1020160031849A KR 20160031849 A KR20160031849 A KR 20160031849A KR 101668313 B1 KR101668313 B1 KR 101668313B1
Authority
KR
South Korea
Prior art keywords
underground
underground line
engaging
cover plate
plate
Prior art date
Application number
KR1020160031849A
Other languages
Korean (ko)
Inventor
김평
박정인
안준배
신예은
Original Assignee
(주) 이우티이씨
김평
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 (주) 이우티이씨, 김평 filed Critical (주) 이우티이씨
Priority to KR1020160031849A priority Critical patent/KR101668313B1/en
Application granted granted Critical
Publication of KR101668313B1 publication Critical patent/KR101668313B1/en

Links

Images

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G9/00Installations of electric cables or lines in or on the ground or water
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G2200/00Indexing scheme relating to installation of electric cables or lines covered by H02G
    • H02G2200/20Identification of installed cables

Landscapes

  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

The present invention relates to a protection plate for an underground line which is buried between the underground line and the ground, and protects the underground line. The protection plate for an underground line comprises: a cover plate for physically protecting the underground line by covering an upper area of the underground line in a ground direction; and a position fixing means for fixing a mutual position with an adjacent protection plate for an underground line.

Description

{CONNECTABLE PROTECTION PLATE FOR UNDERGROUND LINE}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a protection plate for an underground line for protecting a power cable embedded in an underground, a sewer pipe, a gas pipe, and a communication cable.

In order to prevent damage of underground cables buried in the ground such as power cables, communication pipes such as power cables, sewer piping, gas pipes, telephone lines, and various control cables, It is a protection plate attached to the upper part.

Cable or piping buried in the ground will remain buried in the ground for a long period of time unless there are special circumstances. However, if cables are repaired or expanded, road pavement works, or other underground facilities construction such as gas pipes or water pipes are inevitably The underground railway must be re-excavated. In this case, underground cable shields are usually installed on top of the buried cable, because inadvertent excavation may damage the cable / piping in the ground.

Conventional underground cable shields are used to protect underground cables from excavation equipment such as excavators during excavation for maintenance and replacement of underground cables. The plate has a plurality of concave-convex parts such as reinforcing ribs and a plurality The mold is formed by a method of injection molding in which a mold having a complicated shape is formed to form a protrusion of the mold, and a molten synthetic resin is injected and then cooled and injected.

However, a separate connecting device is used to reinforce between the protecting plate and the protecting plate, and inconveniences may arise depending on the inconvenience of connecting a separate connecting device and the type of the connecting device.

Korean Patent Publication No. 0473328 (published on Mar. 07, 2005), Registered Utility Model No. 0411615 of the Republic of Korea (2006. 03. 16. Announcement), Korea Registered Utility Model No. 0417009 (2006. 05. 23. Announcement).

An object of the present invention is to provide a protection plate with an underground line for protecting a track buried in the ground.

Alternatively, the present invention intends to provide a protection plate with an underground line which can strengthen the strength in such a manner as to mutually fix the protection plate with a neighboring underground line.

The underground protection plate according to one aspect of the present invention is a underground line protection plate buried between an underground line and a ground to protect the underground line. The cover plate covers the upper area of the underground line in the direction of the ground to physically protect the underground line, And a position fixing means for fixing the mutual position with the protection plate by one underwater line.

Here, the position fixing means may include a plurality of coupling protrusions or engagement grooves formed at the boundary of the cover plate.

Here, the cover plate includes load bearing walls for supporting the pressure applied from above, and the engaging projections or engaging grooves may be located between the load bearing walls.

Here, the cover plate includes load bearing walls for supporting the pressure applied from above, and the engaging projections or engaging grooves may be located in a region in which the load bearing wall extends in the longitudinal direction.

Here, the position fixing means includes a plurality of coupling protrusions formed on one side of the cover plate and a plurality of coupling grooves formed on opposite sides of the one side, and the coupling protrusions are inserted into the coupling grooves formed on the cover plate of the protection plate by neighboring underlines. Can be combined.

Here, the engaging projections and the engaging grooves which are fitted to each other can be joined in an X-shape.

Here, the engaging projections and the engaging grooves may include bending means in the connecting region with the cover plate so that the engaging projections and the engaging grooves can be inclined obliquely with respect to the plane direction of the lid plate.

Here, the position fixing means includes coupling protrusions which are mutually coupled with the protection plate by neighboring underground lines and extend in diagonal directions with respect to the paper surface direction, and the coupling protrusions of the protection plate by two adjacent underground lines are combined in the X- .

When the protection plate with the underground line according to the present invention is implemented, it is advantageous in that the strength of the embedded state can be enhanced by fixing the protection plate to protect the line embedded in the ground.

Alternatively, when the protection plate is fixed to the protection plate by the underground line of the present invention, a part of the protection plate protrudes into the ground by the underground line to fix the movement of the protection plate.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an underground shield according to an embodiment of the present invention, which is embedded between an underground cable and a ground to protect an underground cable. FIG.
FIG. 2 is a perspective view showing an embodiment of coupling protrusions provided on the protection plate by the underground line of FIG. 1;
FIG. 3 is a perspective view showing an underground shield according to another embodiment of the present invention, which is embedded between an underground line and a ground to protect an underground line. FIG.
4 is a perspective view showing a detailed structure of a coupling groove of a protection plate by an underground line of FIG. 3;
FIG. 5 is a perspective view showing the detailed structure of the coupling protrusion of the protection plate by the underground line of FIG. 3;
6 is a perspective view showing a state in which unit protrusions of coupling protrusions formed on the cover plate of the protection plate by one underground line and coupling grooves formed on the cover plate of the protection plate by another adjacent underground line are engaged with each other.
7 and 8 are side views for explaining the process of combining the coupling protrusion and the coupling groove with the bending means.
Fig. 9 is a side view showing a bending means of a bendable elastic material; Fig.
10 is a side view showing a structure of a bending means implemented in a laminated structure of two layers having different mechanical characteristics from each other in order to enhance durability.
Fig. 11 is a side view showing the engaging groove and the cover plate having the structure of the bending means with the mutually abutting incision surface shown in Fig. 2; Fig.
FIG. 12 is a perspective view showing an underground guard according to another embodiment of the present invention, which is embedded between an underground line and a ground to protect an underground line. FIG.
FIG. 13 is a perspective view showing the structure of a coupling protrusion for a coupling groove provided in the protection plate by the underground line of FIG. 12; FIG.
14 is a perspective view showing a state in which unit protrusions of coupling protrusions formed on the cover plate of the protection plate by one underground line and coupling grooves formed on the cover plate of the protection plate by another adjacent underground line are fastened to each other.
15 and 16 are side views for explaining the process of combining the unit protrusions with the perforations by means of bending means.

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

In describing the present invention, the terms first, second, etc. may be used to describe various elements, but the elements may not be limited by terms. Terms are for the sole purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

It is to be understood that when an element is referred to as being connected or connected to another element, it may be directly connected or connected to the other element, but it may be understood that other elements may be present in between .

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions may include plural expressions unless the context clearly dictates otherwise.

It is to be understood that the term " comprising, " or " comprising " as used herein is intended to specify the presence of stated features, integers, But do not preclude the presence or addition of steps, operations, elements, components, or combinations thereof.

In addition, the shapes and sizes of the elements in the drawings and the like can be exaggerated for clarity.

FIG. 1 illustrates an underground shield according to an embodiment of the present invention for protecting an underground cable between an underground cable and a ground.

As shown in the figure, the protection plate 100 includes a cover plate 102 for covering the upper area of the underground line in the direction of the paper to physically protect the underground line, and a position fixing means for fixing the mutual position of the underground line with the protection plate And a plurality of coupling protrusions 130 and 140 formed at the boundary of the cover plate.

FIG. 2 shows an embodiment of the coupling protrusions 130 and 140 provided in the protection plate 100 by the underground line of FIG. 1 of FIG.

As shown in FIG. 2, an easily removable display layer 136 can be formed on the upper surface of the plurality of coupling protrusions 130 and 140.

Alternatively, in other implementations, the plurality of engaging projections may include perforation holes that can be formed by pressing, and temporary materials that hold perforation holes.

Alternatively, in other implementations, a material that is easy to display with an oil-based marker or the like may be formed on the upper surface of the plurality of engaging projections.

The coupling protrusions 130 shown in FIG. 2 are formed with coupling grooves HR between the coupling protrusions 130, and coupling protrusions of the protection plate are coupled to the coupling grooves HR by neighboring underground lines, . The engaging protrusions 130 formed on one side of the cover plate are disposed at positions staggered with the engaging projections 140 formed on opposite sides of the cover plate so that the engaging protrusions 140 can be engaged with the engaging protrusions 140 formed on opposite sides, As shown in Fig. Accordingly, the coupling protrusions 130 and 140 may be fitted into the coupling grooves formed in the cover plate of the protection plate by adjacent underground lines of the same standard. In addition, the jaw 138 may be formed such that the engaging projection inserted into the engaging groove HR is not released.

The engaging projections and the engaging grooves to be engaged with each other are engaged in an X-shape, and the engaging projections and the engaging grooves can be inclined obliquely with respect to the plane direction of the lid plate. The coupling protrusions 130 may include a bending means 132 in a connecting area between the coupling protrusions 130 and the cover plate so that the coupling protrusions 130 may have a shape inclined diagonally, (Not shown) extending in an oblique direction with respect to the center. With this structure, the coupling protrusions of the shield plate can be coupled in the X-shape by two adjacent underground lines. The illustrated bending means has a cut-away surface 132 that can abut against each other when tilted.

Although only one side of the coupling protrusions 130 are shown in FIG. 2, it is a matter of course that the coupling protrusions 140 on the opposite side have the same structure.

FIG. 3 illustrates an underground shield according to another embodiment of the present invention, which is embedded between an underground cable and a ground to protect the underground cable.

The protection plate 200 with the underground lines shown includes a cover plate 202 for covering the upper area of the underground line in the direction of the ground to physically protect the underground lines, a position fixing means for fixing the mutual position with the protection plate by the adjacent underground lines A plurality of coupling grooves 230 formed on one side of the cover plate 202, and a plurality of coupling protrusions 240 formed on opposite sides facing the one side. Here, the coupling protrusions 240 are fitted into the coupling grooves 230 formed in the cover plate 202 of the protection plate by neighboring underground lines.

In the case of components similar to those of the underground shielding plate of FIG. 1, among the components of the shielding plate shown in the drawing, the overlapping description will be omitted.

Fig. 4 shows the detailed structure of the coupling groove 230 of the protection plate by the underground line of Fig. 3, and Fig. 5 shows the detailed structure of the coupling projection 240 of the protection plate by the underground line of Fig.

6 shows a state in which the unit protrusions 242 of the engaging protrusion formed on the cover plate 202-2 of the cover plate by one underground line and the engaging grooves 242 formed on the cover plate 202-1 of the cover plate by another adjacent underground line 230 are fastened to each other.

The coupling groove 230 is provided with a hole 232 through which the coupling protrusion 240 can penetrate and the coupling protrusion 240 is engaged with the coupling protrusion 240 248 are respectively formed of two unit protrusions 242. The two unit protrusions 242 are spaced apart from each other in order to secure a movable clearance when the perforations 232 are penetrated.

The engaging projections 240 and the engaging grooves 230, which are engaged with each other, can be engaged in an X-shape as shown in FIG. On the other hand, it is more useful that the engaging projections 230 and the engaging grooves 240 are inclined obliquely with respect to the planar direction of the cover plate 202 in a state where the embedment is connected to the protection plate by neighboring underground lines.

The coupling protrusions 240 may include a bending means 249 in a connecting region between the coupling protrusions 240 and the cover plate 202 so that the coupling protrusions 240 may have an inclined shape in the oblique direction, And may have a shape extending in an oblique direction with respect to the plane direction (that is, the paper surface direction). Likewise, the connecting groove 230 and the cover plate 202 may include the bending means 239 in the connecting region or the coupling grooves 230 may be formed in the plane direction of the cover plate 202 And may have a shape extending in the oblique direction.

Figs. 7 to 8 are provided for explaining the process of combining the coupling protrusions and the coupling grooves with the bending means. As shown in the drawing, both the coupling protrusions 240 and the coupling grooves 230 are in parallel with the plane of the cover plates 202-1 and 201-2 before coupling and at the beginning of coupling of FIG. 7, The protective plates are coupled to the coupling protrusions 240 and the coupling protrusions 230 at the boundary portion of each other in a state where they are perpendicular to each other.

Next, in a state in which the protection plates are joined to the two adjacent underground lines, the protection plate is pivoted by one of the underground lines so as to form the same plane with each other. The connecting area between the engaging protrusion 240 and the cover plate 202-2 and the connecting area between the engaging groove 230 and the cover plate 202-1 are inclined at 45 degrees by the bending means 239, The state shown in Fig. 8 is attained, and this state is embedded in the ground.

When the protection plate is pivoted by any one of the underground lines after the fastening, the coupling protrusion 240 and the coupling groove 230 are formed by the restoring force (elastic force) in the direction opposite to the pivot, The frictional force is increased and the bonding force is strengthened.

Meanwhile, it can be understood that the coupling protrusion 240 formed of the two unit protrusions 242 formed with the locking protrusions 248 for preventing the detachment has an arrow shape. When the arrow shape of the engaging projection 240 is sufficiently protruded from the engaging groove 230 even after the engaging, the arrow shape protrudes at an angle of 45 degrees after being engaged in the above-mentioned X shape, The embossed arrow shape is embedded in the soil (soil) during landfill, so that the protective plates can be fixed to the ground with the entire connected underground line.

The bending means 239 and 249 may have a separate pivoting structure such as a hinge or be made of a resilient material that is bendable. Fig. 9 shows a bending means 239 of a resiliently bendable material. As shown in the drawing, the coupling groove 230 and the cover plate 202 are connected to each other by a bending means 239 made of an elastic material, and can be inclined at an angle of 45 degrees with respect to each other.

Although only the engaging grooves 230 are shown in Figs. 9 to 13, it is a matter of course that the engaging projections 240 have the same structure.

It is needless to say that the structure of the bending means disclosed in Figs. 9 to 13 can also be applied to the protection plate with an underground line according to the embodiment of Fig.

10 is a view showing a state in which the bending means 239-B implemented in a laminated structure of two layers L1 and L2 having different mechanical properties (for example, tensile elasticity, tensile strength, etc.) 1).

Fig. 11 shows a coupling groove 230 and a cover plate 202-2 having a structure of a bending means 239-2 having mutually abutting cut surfaces 132 shown in Fig. As shown in the drawing, the engaging grooves 230 and the cover plate 202-2 have a structure capable of supporting the inclined surfaces of the mutually abutting surfaces when they are maintained at a 45 degree inclination from each other.

FIG. 12 illustrates an underground guard according to another embodiment of the present invention for protecting an underground line buried between an underground line and a ground.

The protection plate 200 with the underground lines shown includes a cover plate 302 for covering the upper area of the underground line in the direction of the ground to physically protect the underground line and a position fixing means for fixing the mutual position of the underground line with the adjacent underground line And a plurality of coupling grooves joining protrusions 330 and 340 formed at the boundary of the cover plate 302.

Fig. 13 shows the structure of a joining protrusion for joining together the joining recesses provided in the protection plate by the underground line of Fig. 12; As shown in the drawing, the engaging projections 330 are formed with perforations 332 which serve as engaging grooves in the vicinity of the cover plate, and unit protrusions 333 serving as engaging projections are formed on the far side. The connecting portion between the engaging groove-joining engaging projections 330 and the cover plate is provided with a bending means 339.

In the case of components similar to those of the protection plate by the underground lines of the above-described FIG. 1 or FIG. 3 among the components of the protection plate by the illustrated underground line, the redundant description will be omitted.

Fig. 14 is a view showing a state in which the unit protrusions 333-2 of the engaging protrusion formed on the cover plate 302-2 of the protection plate by one underground line and the unit protrusions 333-2 of the coupling formed on the cover plate 302-1 of the protection plate by another adjacent underground line And the grooves 332-1 are fastened to each other.

The joining groove-joining joining protrusions 330-1 and 330-2 are fitted to the joining groove-joining joining protrusions 330-1 and 330-2 formed on the cover plate of the protective plate by neighboring underground lines. That is, with one underground line, the unit protrusions 333-2 of the protection plate can be coupled to the perforations 332-1 of the protection plate by another adjacent underground line.

15 to 16 are provided for explaining the process of combining the unit protrusions with the perforations by means of bending means. As shown in the figure, both the coupling grooves 330-1 and 330-2 are in parallel with the plane of the cover plates 302-1 and 301-2 before coupling and at the beginning of coupling in Fig. 15, With two adjacent underground lines, the protection plates are perpendicular to each other, and the unit protrusions 333-2 at the boundaries of each other are fastened to the perforations 332-1.

Next, in a state in which the protection plates are joined to the two adjacent underground lines, the protection plate is pivoted by one of the underground lines so as to form the same plane with each other. Then, by the bending means 339-1 and 339-2, the connecting area between the engaging projection 330-2 and the cover plate 302-2 and the engaging protrusion 330-1 and the cover plate 302-1, The connecting area of the connecting portion is inclined at 45 degrees to the state shown in Fig. 16, and is buried in the ground in this state.

It should be noted that the above embodiment is for the purpose of illustration and not for the purpose of limitation. In addition, it will be understood by those of ordinary skill in the art that various embodiments are possible within the scope of the technical idea of the present invention.

100, 200, 300: underground shield
102, 202, 302: cover plate
130, 140, 240:
230: Coupling groove
239, 249, 339: Bending means
330, 340: Coupling projections for joining together

Claims (8)

It is an underground line which is embedded between underground and ground to protect underground lines.
A cover plate covering the upper area of the underground line in the direction of the ground to physically protect the underground line; and
A position fixing means for fixing the mutual position with the shield plate by a neighboring underground line
/ RTI >
The position fixing means,
And a plurality of coupling protrusions formed at a boundary of the cover plate,
The position fixing means,
The engaging protrusions being mutually engageable with engaging projections of the protective plate by neighboring underlines and extending in diagonal directions with respect to the paper surface direction,
Wherein the joining protrusions of the shroud are joined to each other by two adjacent underground lines in an X shape (left / right staggered joining) to fix the shingling plate to the ground with the underground line.
delete delete delete It is an underground line which is embedded between underground and ground to protect underground lines.
A cover plate covering the upper area of the underground line in the direction of the ground to physically protect the underground line; and
A position fixing means for fixing the mutual position with the shield plate by a neighboring underground line
/ RTI >
The position fixing means,
And a plurality of coupling protrusions or coupling grooves formed at a boundary of the cover plate,
A plurality of coupling protrusions formed on one side of the cover plate and a plurality of coupling grooves formed on an opposite side with respect to the one side,
The engaging protrusions are engaged with engaging grooves formed in the cover plate of the shield plate by neighboring underground lines,
Wherein the engaging projections and the engaging grooves are engaged with each other in an X shape (left / right staggered engagement) to fix the protection plate to the ground with the underground line.
delete 6. The method of claim 5,
Wherein the engaging projection and the engaging groove are inclined in an oblique direction with respect to a plane direction of the lid plate, wherein the engaging projection and the engaging groove include bending means in a connecting area with the lid plate.
delete
KR1020160031849A 2016-03-17 2016-03-17 Connectable protection plate for underground line KR101668313B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020160031849A KR101668313B1 (en) 2016-03-17 2016-03-17 Connectable protection plate for underground line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160031849A KR101668313B1 (en) 2016-03-17 2016-03-17 Connectable protection plate for underground line

Publications (1)

Publication Number Publication Date
KR101668313B1 true KR101668313B1 (en) 2016-10-24

Family

ID=57256649

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020160031849A KR101668313B1 (en) 2016-03-17 2016-03-17 Connectable protection plate for underground line

Country Status (1)

Country Link
KR (1) KR101668313B1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100417009B1 (en) 2001-06-12 2004-02-05 주식회사 대우일렉트로닉스 Apparatus for recording high definition in a time lapse vcr
KR100411615B1 (en) 1995-04-17 2004-04-21 가부시키 가이샤 에바라 세이사꾸쇼 Ozone generating apparatus
KR100473328B1 (en) 2001-10-05 2005-03-07 한보니스코 주식회사 Protect plate for subterranean line
KR200381496Y1 (en) * 2005-01-04 2005-04-14 강병수 Prefabricated floorings
KR200474358Y1 (en) * 2014-05-09 2014-09-05 정문식 Protect plate for subterranean line
KR101556942B1 (en) * 2014-10-29 2015-10-05 영진산업 주식회사 Underground cable cover

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100411615B1 (en) 1995-04-17 2004-04-21 가부시키 가이샤 에바라 세이사꾸쇼 Ozone generating apparatus
KR100417009B1 (en) 2001-06-12 2004-02-05 주식회사 대우일렉트로닉스 Apparatus for recording high definition in a time lapse vcr
KR100473328B1 (en) 2001-10-05 2005-03-07 한보니스코 주식회사 Protect plate for subterranean line
KR200381496Y1 (en) * 2005-01-04 2005-04-14 강병수 Prefabricated floorings
KR200474358Y1 (en) * 2014-05-09 2014-09-05 정문식 Protect plate for subterranean line
KR101556942B1 (en) * 2014-10-29 2015-10-05 영진산업 주식회사 Underground cable cover

Similar Documents

Publication Publication Date Title
KR101258417B1 (en) Member for temporarily recovering road surface and method for temporarily recovering road surface
KR100789697B1 (en) Interlocking socket typed concrete conduit
KR102235837B1 (en) Support Assembly for soil retaining wall using H-beam and Method for constructing earth retaining wall
JP2016017357A (en) Water cut-off structure and water cut-off method
KR100939657B1 (en) The protection plate of underground cable
US6279275B1 (en) Foundation wall construction having water impervious drain panels
JP2009114643A (en) Connecting structure of underground structure
KR101668313B1 (en) Connectable protection plate for underground line
JP5529087B2 (en) Press bar of open shield machine
JP2008045333A (en) Water stop material and water cut-off structure of elastic joint
KR102018483B1 (en) Protecion Plate for Underground Cable
JP2006144534A (en) Joint structure of underground concrete structure and execution method therefor
JP2008278728A (en) Trough
KR100729604B1 (en) Support block of underground cable
WO2022074770A1 (en) Protective member and protection method
JP4436218B2 (en) Concrete sheet pile
KR20190064049A (en) Waterproofing structure for Tunnel Side
KR200411615Y1 (en) Protect plate of transmission and distribution electricity line layed in underground
JP7429965B2 (en) protection plate
JP3009597U (en) Cable box made of steel plate for underground burial
KR101580547B1 (en) A precast box culvert with watertight band
KR102632339B1 (en) System for protecting transmission and transformation cables of electric power
KR101147637B1 (en) Protection apparatus for underground product
JP3228617U (en) Protective plate
KR20130024497A (en) Protecting block for undergraund cable

Legal Events

Date Code Title Description
E701 Decision to grant or registration of patent right
GRNT Written decision to grant