Title:
COVER SUPPORT STRUCTURE FOR SIDE-DITCH
Document Type and Number:
Japanese Patent JP3875987
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a cover support structure for a side-ditch obtaining load resistance while preventing the looseness of a ditch cover 2.
SOLUTION: A plurality of recesses 10 are formed at a cover receiving surface 1b of a side-ditch block 1. An elastic body 3 taller than the depth of the recess 10 and smaller in volume than the recess 10 is disposed in each recess 10. The ditch cover 2 with its lower face 2c formed as a flat face is placed on the elastic bodies 3. The looseness of the ditch cover 2 is normally prevented by the resilience of the elastic bodies 3. When large load is applied to the ditch cover 2, the elastic bodies 3 are elastically deformed in the recesses 10 and settled within the recesses 10. The ditch cover 2 is thereby supported by the whole cover receiving face 1b to obtain high load resistance.
Inventors:
Fujisawa, Tadashi
Application Number:
JP2005000344323
Publication Date:
November 02, 2006
Filing Date:
November 29, 2005
Export Citation:
Assignee:
Fujisawa, Tadashi
International Classes:
E03F5/04
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