Magnetic marker, magnetic marker retaining method, work apparatus for magnetic markers, and magnetic marker installation method

Patent metadata

Field	Value
Publication number	US-11220201-B2
Application number	US-202016840458-A
Country	US
Kind code	B2
Filing date	Apr 6, 2020
Priority date	Feb 10, 2016
Publication date	Jan 11, 2022
Grant date	Jan 11, 2022

Abstract

A magnetic marker retaining method that includes placing a plurality of sheet-shaped magnetic markers on a surface of a band-shaped carrier sheet, the plurality of sheet-shaped magnetic markers being so as to be spaced in a longitudinal direction of the band-shaped carrier sheet; and retaining the plurality of sheet-shaped magnetic markers in a state of a roll body with the band-shaped carrier sheet rolled up in a roll shape, the band-shaped carrier sheet being rolled up such that each surface of the plurality of sheet-shaped magnetic markers directly contacts the other side of the surface of the band-shaped carrier sheet, on which the plurality of sheet-shaped magnetic markers are placed, and the plurality of sheet-shaped magnetic markers being to be laid on a road.

First claim

The invention claimed is:

1. A magnetic marker retaining method, comprising:
placing a plurality of sheet-shaped magnetic markers on a surface of a band-shaped carrier sheet, the plurality of sheet-shaped magnetic markers being spaced in a longitudinal direction of the band-shaped carrier sheet; and
retaining, by a roll-out shaft, the plurality of sheet-shaped magnetic markers in a state of a roll body with the band-shaped carrier sheet rolled up in a roll shape, wherein
a joint layer is provided on a surface of each of the plurality of sheet-shaped magnetic markers, the joint layer being configured to bond the surface of the each of the plurality of sheet-shaped magnetic markers to a road surface of a road in a state of the band-shaped carrier sheet being rolled out,
the band-shaped carrier sheet is rolled up such that each surface of the joint layer directly contacts the other side of the surface of the band-shaped carrier sheet, on which the plurality of sheet-shaped magnetic markers are placed,
the band-shaped carrier sheet is pressed, by a pressure roller, on the road with the surface facing the road such that the plurality of sheet-shaped magnetic markers are placed on the road,
the band-shaped carrier sheet is rolled up, by a roll-up shaft, after the plurality of sheet-shaped magnetic markers are placed on the road by the pressure roller and taken out from the band-shaped carrier sheet, and
the road is heated before the band-shaped carrier sheet is pressed on the road.

2. The magnetic marker retaining method according to claim 1 , wherein each of the plurality of sheet-shaped magnetic markers is laid on the road surface with the joint layer thereof facing the road surface.

3. The magnetic marker retaining method according to claim 1 , wherein each of the plurality of sheet-shaped magnetic markers is pressed on the road with the joint layer facing the road.

4. The magnetic marker retaining method according to claim 1 , wherein the plurality of sheet-shaped magnetic markers are detected by a magnetic sensor provided to a vehicle.

5. The magnetic marker retaining method according to claim 1 , wherein each of the plurality of sheet-shaped magnetic markers is heated after the each of the plurality of sheet-shaped magnetic markers is placed on the road.

6. The magnetic marker retaining method according to claim 1 , wherein the band-shaped carrier sheet is retained by a vehicle configured to roll out the band-shaped carrier sheet.

7. The magnetic marker retaining method according to claim 1 , wherein
the road is heated by a heating apparatus configured to heat the road, the heating apparatus being located relative to the pressure roller such that the road is heated before the band-shaped carrier sheet is pressed on the road.

8. The magnetic marker retaining method according to claim 1 , wherein the joint layer is made of asphalt.

9. The magnetic marker retaining method according to claim 8 , wherein the joint layer made of asphalt functions as a bonding material when jointed to the road surface.

10. The magnetic marker retaining method according to claim 1 , wherein
each of the plurality of sheet-shaped magnetic markers includes a nonskid layer on each opposite surface of the each surface of the plurality of sheet-shaped magnetic markers.

11. The magnetic marker retaining method according to claim 10 , wherein the nonskid layer includes an aggregate.

12. The magnetic marker retaining method according to claim 10 , wherein each of the plurality of sheet-shaped magnetic markers is laid on the road surface with the joint layer thereof facing the road surface.

13. A sheet-shaped magnetic marker roll, comprising:
a band-shaped carrier sheet;
a plurality of sheet-shaped magnetic markers provided on a surface of the band-shaped carrier sheet, the plurality of sheet-shaped magnetic markers being spaced in a longitudinal direction of the band-shaped carrier sheet; and
a joint layer provided on a surface of each of the plurality of sheet-shaped magnetic markers, the joint layer being configured to bond the surface of the each of the plurality of sheet-shaped magnetic markers to a road surface of a road in a state of the band-shaped carrier sheet being rolled out, wherein
the band-shaped carrier sheet is rolled up in a roll shape such that each surface of the joint layer directly contacts the other side of the surface of the band-shaped carrier sheet, on which the plurality of sheet-shaped magnetic markers are placed,
the band-shaped carrier sheet is pressed, by a pressure roller, on the road with the surface facing the road such that the plurality of sheet-shaped magnetic markers are placed on the road,
the band-shaped carrier sheet is rolled up, by a roll-up shaft, after the plurality of sheet-shaped magnetic markers are placed on the road by the pressure roller and taken out from the band-shaped carrier sheet, and
the road is heated before the band-shaped carrier sheet is pressed on the road.

14. The sheet-shaped magnetic marker roll according to claim 13 , wherein
the road is heated by a heating apparatus configured to heat the road, the heating apparatus being located relative to the pressure roller such that the road is heated before the band-shaped carrier sheet is pressed on the road.

15. The sheet-shaped magnetic marker roll according to claim 13 , wherein the plurality of sheet-shaped magnetic markers are detected by a magnetic sensor provided to a vehicle.

16. The sheet-shaped magnetic marker roll according to claim 13 , wherein each of the plurality of sheet-shaped magnetic markers is heated after the each of the plurality of sheet-shaped magnetic markers is placed on the road.

17. The sheet-shaped magnetic marker roll according to claim 13 , wherein the joint layer is made of asphalt.

18. The sheet-shaped magnetic marker roll according to claim 17 , wherein the joint layer made of asphalt functions as a bonding material when jointed to the road surface.

19. The sheet-shaped magnetic marker roll according to claim 13 , wherein
each of the plurality of sheet-shaped magnetic markers includes a nonskid layer on each opposite surface of the each surface of the plurality of sheet-shaped magnetic markers.

20. The sheet-shaped magnetic marker roll according to claim 19 , wherein the nonskid layer includes an aggregate.

21. The sheet-shaped magnetic marker roll according to claim 13 , wherein each of the plurality of sheet-shaped magnetic markers is laid on the road surface with the joint layer thereof facing the road surface.

22. The sheet-shaped magnetic marker roll according to claim 19 , wherein each of the plurality of sheet-shaped magnetic markers is laid on the road surface with the joint layer thereof facing the road surface.

Assignees

• Aichi Steel Corp

Inventors

• Yamamoto Michiharu
• Nagao Tomohiko
• Aoyama Hitoshi

Classifications

• E01C23/18 Primary

  for applying prefabricated markings · CPC title

• E01F9/30

  Arrangements interacting with transmitters or receivers otherwise than by visible means, e.g. using radar reflectors or radio transmitters (E01F11/00 takes precedence) · CPC title

• E01F9/506 Primary

  characterised by the road surface marking material, e.g. comprising additives for improving friction or reflectivity; Methods of forming, installing or applying markings in, on or to road surfaces · CPC title

• E01F9/00

  Arrangement of road signs or traffic signals; Arrangements for enforcing caution (for obstructing or restricting traffic E01F13/00) · CPC title

• E01F9/512

  Preformed road surface markings, e.g. of sheet material; Methods of applying preformed markings · CPC title