Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1976-07-01
1978-04-04
Bell, James J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
52518, 427390D, 427417, 428283, 428291, 428323, 428325, 428332, 428440, 428489, 428920, E04D 100
Patent
active
040828859
ABSTRACT:
A fire resistant and weathering resistant shingle or surface covering material ecologically desirable in its utilization of disposable glass is disclosed. The shingle has an asphalt coating with specified characteristics, and the asphalt coating contains from 10 to 55% by weight granular glass and preferably a combination of granular glass and non-glass granular mineral filler a major portion of which is granular glass, with each having a specified particle size distribution.
A process is disclosed for producing a fire-resistant shingle or surface covering. The process includes saturating a felt base with a bitumen, admixing asphalt with granular glass and preferably with a specified combination of granular glass and non-glass granular mineral filler of specified characteristics, and then coating at least one side of the saturated felt with the filled asphalt.
REFERENCES:
patent: 1913667 (1933-06-01), Harshberger
patent: 2302183 (1942-11-01), Burns
patent: 2326724 (1943-08-01), Fasold et al.
patent: 2490430 (1949-12-01), Greider et al.
patent: 2610928 (1952-09-01), Greider et al.
patent: 3231453 (1966-01-01), Smith
Boarini Edward J.
Bray Hugh S.
Rashid Sheikh A.
Bell James J.
Kurlandsky Samuel
Ohlson Glenn W.
Robinson Robert H.
United States Gypsum Company
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