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US 6,655,290 B2Granted
Structure of slackening type blasting mat
OwnerYong-So Choinventor
Life of this patent
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Abstract
A blasting mat assembly comprising a steel plate member having thickness capable of bearing a blasting pressure of explosives inputted to blasting hole; an elastic member which is fixedly attached along a bottom edge of the steel plate member for isolating blasting noise, blasting gas and flying material. Explosives inputted into each blasting hole of blasting region are discharged; and a weight reinforcing member which is welded to a top surface of the steel plate member in a structure of a grid frame made of steel beams.
Claims7
A blasting mat assembly comprising:
- a metal plate having a continuous bottom major surface for covering a blasting region, said plate having a thickness capable of containing blasting forces within said region;
- an elastic barrier connected to the periphery of the continuous bottom major surface for dampening blast noise and containing flying debris generated by the blast;
- and
- a frame having a substantial weight resting on a top major surface of the metal plate, said frame having metal beams in a grid configuration overlying the top major surface of the metal plate.
1 more element
Dependencies are inferred from the claim text.