Title:
コンクリートブロック
Document Type and Number:
Japanese Patent JP6773485
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a concrete block such as a pavement block laid in a place in which people walk and which an automobile enters and exits therefrom, which can maintain a placement state without a shift in a lateral direction even if a load in a lateral direction is applied to an upper face of the concrete block.SOLUTION: In a concrete block whose upper end shape is rectangular, an irregular engagement part 11 composed of a recessed part 13 and a protruded part 12 which is arranged in parallel with the recessed part 13 in a lateral direction is arranged at one side face of the concrete block, an outer edge of the protruded part 12 includes a curved line curved in one direction in a plane view, and an inner edge of the recessed part 13 includes a curved line curved in the other direction which is different from one direction. By this constitution, the concrete block is prevented from moving in not only a thickness direction but also the lateral direction.SELECTED DRAWING: Figure 1
Inventors:
Ayao Tada
Osamu Kimura
Daizo Hori
Motohiro Kikuchi
Osamu Kimura
Daizo Hori
Motohiro Kikuchi
Application Number:
JP2016164263A
Publication Date:
October 21, 2020
Filing Date:
August 25, 2016
Export Citation:
Assignee:
Nippon Kogyo Co., Ltd.
International Classes:
E01C5/06
Domestic Patent References:
| JP49042372B1 | ||||
| JP4061107U | ||||
| JP2001064902A | ||||
| JP49135425A |
Foreign References:
| US20040250495 |
Attorney, Agent or Firm:
Yamauchi Patent Office