US4082885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire resistant asphalt roofing shingles
Assignee: United States Gypsum Co
•
Filing: 1976-07-01
•
Granted: 1978-04-04
•
Expires: 1996-07-01
Abstract
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.
Inventors
- 👤 Sheikh A. Rashid
- 👤 Hugh S. Bray
- 👤 Edward J. Boarini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:56
CPC Classifications
E; E04; E04D; E04D5/00; E04D5/02; E04D1/00; E04D1/12; E04D1/16; E04D2001/005; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10T; Y10T428/00; Y10T428/25; Y10T428/252; Y10T428/26; Y10T428/31504; Y10T428/31551; Y10T428/31641; Y10T428/31815; Y10T442/00; Y10T442/20; Y10T442/2041; Y10T442/2098; Y10T442/2107; Y10T442/2213; Y10T442/2631
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
174 words
A fire resistant and weathering resistant shingle or surface covering material ecologically desirable in its utilization of disposable glass, said shingle comprising a felt base sheet saturated with a bitumen and coated on at least one side with a filled asphalt coating, said asphalt coating prior to its filling having a penetration of from 5 to 40 mm. at 77° F. and a softening point of from 180° F. to 250° F., said filled asphalt having granular glass therein in an amount of from 10% to 55% by weight, based on the weight of the asphalt, said granular glass having a particle size distribution of ______________________________________
Sieve Analysis
(U.S. Std. Screen)
Cumulative Wt. % Range
______________________________________
60 mesh .2 to 20
on 80 mesh 2 to 29
on 100 mesh 4 to 35
on 140 mesh 14 to 46
on 200 mesh 34 to 61
on 325 mesh 70 to 90
through 325 mesh remainder,
______________________________________ and said filled asphalt coating comprising from about 25 to about 45% by weight of the finished shingle.
Claim 2
Dependent Claim
174 words
A fire resistant and weathering resistant shingle or surface covering material ecologically desirable in its utilization of disposable glass, said shingle comprising a felt base sheet saturated with a bitumen and coated on at least one side with a filled asphalt coating, said asphalt coating prior to its filling having a penetration of from 5 to 40 mm. at 77° F. and a softening point of from 180° F. to 250° F., said filled asphalt having granular glass therein in an amount of from 10% to 55% by weight, based on the weight of the asphalt, said granular glass having a particle size distribution of ______________________________________
Sieve Analysis
(U.S. Std. Screen)
Cumulative Wt. % Range
______________________________________
60 mesh .2 to 20
on 80 mesh 2 to 29
on 100 mesh 4 to 35
on 140 mesh 14 to 46
on 200 mesh 34 to 61
on 325 mesh 70 to 90
through 325 mesh remainder,
______________________________________ and said filled asphalt coating comprising from about 25 to about 45% by weight of the finished shingle.
Claim 3
Dependent Claim
177 words
A process for producing a fire resistant and weathering resistant shingle or surface covering material ecologically desirable in its utilization of disposable glass, said process comprising: A. saturating a felt base with a bitumen; B. admixing heated, workable asphalt with granular glass, said asphalt having a penetration of from about 5 to 40 mm. at 77° F. and a softening point of from 180° F. to 250° F., said granular glass being admixed with the asphalt in an amount of from 10 to 55% by weight of the asphalt, and said granular glass having a particle size distribution of ______________________________________
Sieve Analysis
(U.S. Std. Screen)
Cumulative Wt. % Range
______________________________________
on 60 mesh .2 to 20
on 80 mesh 2 to 29
on 100 mesh 4 to 35
on 140 mesh 14 to 46
on 200 mesh 34 to 61
on 325 mesh remainder; and
______________________________________ C. coating at least one side of the saturated felt with the filled asphalt until the filled asphalt comprises from about 25 to about 45% by weight of the finished material.
Claim 4
Dependent Claim
177 words
A process for producing a fire resistant and weathering resistant shingle or surface covering material ecologically desirable in its utilization of disposable glass, said process comprising: A. saturating a felt base with a bitumen; B. admixing heated, workable asphalt with granular glass, said asphalt having a penetration of from about 5 to 40 mm. at 77° F. and a softening point of from 180° F. to 250° F., said granular glass being admixed with the asphalt in an amount of from 10 to 55% by weight of the asphalt, and said granular glass having a particle size distribution of ______________________________________
Sieve Analysis
(U.S. Std. Screen)
Cumulative Wt. % Range
______________________________________
on 60 mesh .2 to 20
on 80 mesh 2 to 29
on 100 mesh 4 to 35
on 140 mesh 14 to 46
on 200 mesh 34 to 61
on 325 mesh remainder; and
______________________________________ C. coating at least one side of the saturated felt with the filled asphalt until the filled asphalt comprises from about 25 to about 45% by weight of the finished material.
Claim 5
Dependent Claim
209 words
A fire resistant and weathering resistnat shingle or surface covering material ecologically desirable in its utilization of disposable glass, said shingle comprising a felt base sheet saturated with a bitumen and coated on at least one side with a filled asphalt coating, said asphalt coating prior to its filling having a penetration of from 5 to 40 mm. at 77° F. and a softening point of from 180° F. to 250° F., said filled asphalt having a combination of granular glass and non-glass granular mineral filler therein in an amount of from 10 to 55% by weight, based on the weight of the asphalt, said granular glass and said non-glass granular mineral filler each having a particle size distribution of ______________________________________
Sieve Analysis
(U.S. Std. Screen)
Cumulative Wt. % Range
______________________________________
60 mesh .2 to 20
on 80 mesh 2 to 29
on 100 mesh 4 to 35
on 140 mesh 14 to 46
on 200 mesh 34 to 61
on 325 mesh 70 to 90
through 325 mesh remainder,
______________________________________ said granular glass comprising a major portion by weight of the combination of granular glass and non-glass granular mineral filler, and said filled asphalt coating comprising from about 25% to about 45% by weight of the finished shingle.
Claim 6
Dependent Claim
209 words
A fire resistant and weathering resistnat shingle or surface covering material ecologically desirable in its utilization of disposable glass, said shingle comprising a felt base sheet saturated with a bitumen and coated on at least one side with a filled asphalt coating, said asphalt coating prior to its filling having a penetration of from 5 to 40 mm. at 77° F. and a softening point of from 180° F. to 250° F., said filled asphalt having a combination of granular glass and non-glass granular mineral filler therein in an amount of from 10 to 55% by weight, based on the weight of the asphalt, said granular glass and said non-glass granular mineral filler each having a particle size distribution of ______________________________________
Sieve Analysis
(U.S. Std. Screen)
Cumulative Wt. % Range
______________________________________
60 mesh .2 to 20
on 80 mesh 2 to 29
on 100 mesh 4 to 35
on 140 mesh 14 to 46
on 200 mesh 34 to 61
on 325 mesh 70 to 90
through 325 mesh remainder,
______________________________________ said granular glass comprising a major portion by weight of the combination of granular glass and non-glass granular mineral filler, and said filled asphalt coating comprising from about 25% to about 45% by weight of the finished shingle.
Claim 7
Dependent Claim
22 words
A fire-resistant and weathering resistant shingle or surface covering material as in claim 3 wherein the non-glass granular material is a carbonate.
Claim 8
Dependent Claim
220 words
A process for producing a fire resistant and weathering resistant shingle or surface covering material ecologically desirable in its utilization of disposable glass, said process comprising: A. saturating a felt base with a bitumen; B. admixing asphalt with a combination of granular glass and non-glass granular mineral filler, said asphalt having a penetration of from about 5 to 40 mm. at 77° F. and a softening point of from 180° F. to 250° F., said combination of granular glass and non-glass granular mineral filler being admixed with the asphalt in an amount of from 10 to 55% by weight of the asphalt, said combination of granular glass and non-glass granular mineral filler having granular glass as a major portion thereof, and said granular glass and non-glass granular mineral filler each having a particle size distribution of ______________________________________
Sieve Analysis
(U.S. Std. Screen)
Cumulative Wt. % Range
______________________________________
on 60 mesh .2 to 20
on 80 mesh 2 to 29
on 100 mesh 4 to 35
on 140 mesh 14 to 46
on 200 mesh 34 to 61
on 325 mesh 70 to 90
through 325 mesh remainder; and
______________________________________ C. coating at least one side of the saturated felt with the filled asphalt until the filled asphalt comprises from about 25 to about 45% by weight of the finished material.
Claim 9
Dependent Claim
220 words
A process for producing a fire resistant and weathering resistant shingle or surface covering material ecologically desirable in its utilization of disposable glass, said process comprising: A. saturating a felt base with a bitumen; B. admixing asphalt with a combination of granular glass and non-glass granular mineral filler, said asphalt having a penetration of from about 5 to 40 mm. at 77° F. and a softening point of from 180° F. to 250° F., said combination of granular glass and non-glass granular mineral filler being admixed with the asphalt in an amount of from 10 to 55% by weight of the asphalt, said combination of granular glass and non-glass granular mineral filler having granular glass as a major portion thereof, and said granular glass and non-glass granular mineral filler each having a particle size distribution of ______________________________________
Sieve Analysis
(U.S. Std. Screen)
Cumulative Wt. % Range
______________________________________
on 60 mesh .2 to 20
on 80 mesh 2 to 29
on 100 mesh 4 to 35
on 140 mesh 14 to 46
on 200 mesh 34 to 61
on 325 mesh 70 to 90
through 325 mesh remainder; and
______________________________________ C. coating at least one side of the saturated felt with the filled asphalt until the filled asphalt comprises from about 25 to about 45% by weight of the finished material.
Claim 10
Dependent Claim
14 words
A process as in claim 5 wherein the non-glass granular material is a carbonate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-03 | 1981-10-03 | 1982-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-03 | 1985-10-03 | 1986-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-03 | 1989-10-03 | 1990-04-04 | $7700.00 | Window Closed / Lapsed |