Drainage mat with high crushing strength and waste-dump base con

Details Drainage mat with high crushing strength and waste-dump base con Drainage mat with high crushing strength and waste-dump base con

1987-06-18

1989-03-28

Bell, James J.

Surgery

Respiratory method or device

Ozone or ion generation

428 72, 428 73, 428117, 428178, 428284, 428298, 428325, B32B 516

Patent

active

048159638

ABSTRACT:
Drainage mats with high compression resistance comprising two fabrics and grains fixedly arranged therebetween, wherein the grains are placed in one layer and are spaced a distance of at least 50% of the average grain size. One of the two fabrics is basically a filter layer, whereas the second fabric can be a filter layer or a tightly woven strip. In addition, a three-dimensional mat with positioning seats for the grains can be placed between the two fabrics. This drainage mat is suitable for constructing waste-dump bases.

REFERENCES:
patent: 2686655 (1954-08-01), Schorner
patent: 4177312 (1979-12-01), Rosen et al.
patent: 4250172 (1981-02-01), Mutzenberg et al.
patent: 4323623 (1982-04-01), Ahrens et al.
patent: 4424248 (1984-01-01), Tesch et al.
patent: 4495235 (1985-01-01), Tesch
patent: 4530869 (1985-07-01), Tesch
patent: 4578068 (1986-03-01), Kramer et al.
patent: 4622260 (1986-11-01), Tesch

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