Claims
- 1. A light weight foam block being rectangular in shape and having horizontal and vertical pairs of tongues and grooves around its perimeter that enable it to interlock with horizontally and vertically adjacent blocks for construction of mine stoppings.
- 2. Block of claim 1 wherein the foam is a foamable plastic material.
- 3. Block of claim 1 wherein the foam is polyurethane.
- 4. Block of claim 1 wherein the foam is polyisocyanurate.
- 5. Block of claim 1 wherein the foam is phenolic.
- 6. Block of claim 1 wherein the foam is polyester.
- 7. Block of claim 1 wherein stopping wall is coated by a fireproof coating.
- 8. Block of claim 1 wherein the foam is fire proof and does not need a coating.
- 9. Block of claim 1 wherein the foam is made fire proof by adding silicates.
- 10. Block of claim 1 wherein the foam is reinforced with glass fibers.
- 11. Block of claim 1 wherein the foam is reinforced by matrix material.
- 12. Block of claim 1 wherein the block is reinforced by an integral skin.
- 13. Block of claim 1 wherein the block has only horizontal tongue and groove.
- 14. Block of claim 1 placed in a vertical position to construct a stopping wall.
- 15. Block of claim 1 wherein an adhesive is applied to tongues and grooves.
CROSS REFERENCES TO RELATED APPLICATIONS
[0001] This application claims the benefit of Provisional Patent Application Ser. #60/186846 filed Mar. 03, 2000
Provisional Applications (1)
|
Number |
Date |
Country |
|
60186846 |
Mar 2000 |
US |