US3926653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of building and maintaining slurry consistency
Assignee: Owens Corning
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Filing: 1974-02-21
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Granted: 1975-12-16
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Expires: 1994-02-21
Abstract
Abstract A method for building and maintaining the consistency of a hydrous calcium silicate product forming slurry is disclosed. The building of the consistency of the slurry is carried out by quiescing the slurry after it is formed. Maintaining the consistency of the slurry is accomplished by alternate periods of mixing and quiescing of the slurry.
Inventors
- 👤 Richard F Shannon
- 👤 Jerry L Helser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:17
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/20; C01B33/22; C01B33/24; C04; C04B; C04B28/00; C04B28/18
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
94 words
A METHOD OF BUILDING AND MAINTAINING THE CONSISTENCY OF A HYDROUS CALCIUM SILICATE ISULATION PRODUCT FORMING AQUEOUS SLURRY OF CALCAREOUS AND SILICEOUS MATERILAS STABILIZED WITH REINFORCING FIBERS, THE METHOD COMPRISING ALLOWING THE SLURRY TO QUIESCE FOR A PERIOD OF TIME RANGING FROM 15 TO 30 MINUTES AFTER INITIAL FORMATION OF THE SLURRY, AND THEN SUBJECTING THE SLURRY TO ALTERNATE PERIODS OF MIXING AND QUIESCING, EACH MIXING THE ALTERNATE PERIODS OF MIXING AND QUIESCING, EACH MIXING PERIOD RANGES FROM 30 SECONDS TO 10 MINUTES AND EACH QUIESCING PERIOD RANGES FROM 20 MINUTES TO 2 HOURS.
Claim 2
Independent Claim
94 words
A METHOD OF BUILDING AND MAINTAINING THE CONSISTENCY OF A HYDROUS CALCIUM SILICATE ISULATION PRODUCT FORMING AQUEOUS SLURRY OF CALCAREOUS AND SILICEOUS MATERILAS STABILIZED WITH REINFORCING FIBERS, THE METHOD COMPRISING ALLOWING THE SLURRY TO QUIESCE FOR A PERIOD OF TIME RANGING FROM 15 TO 30 MINUTES AFTER INITIAL FORMATION OF THE SLURRY, AND THEN SUBJECTING THE SLURRY TO ALTERNATE PERIODS OF MIXING AND QUIESCING, EACH MIXING THE ALTERNATE PERIODS OF MIXING AND QUIESCING, EACH MIXING PERIOD RANGES FROM 30 SECONDS TO 10 MINUTES AND EACH QUIESCING PERIOD RANGES FROM 20 MINUTES TO 2 HOURS.
Claim 3
Dependent Claim
24 words
A method according to claim 1 wherein, in the alternate periods of mixing and quiescing, each quiescing period ranges from 20 to 30 minutes.
Claim 4
Dependent Claim
29 words
A method according to claim 1 wherein the alternate periods of mixing and quiescing are carried out over a period of time ranging from 30 minutes to 4 hours.
Claim 5
Dependent Claim
19 words
A method according to claim 1 wherein the consistency is maintained in a range from 150 to 300 units.
Claim 6
Dependent Claim
19 words
A method according to claim 1 wherein the consistency is maintained in a range from 220 to 280 units.
Claim 7
Dependent Claim
41 words
A method according to claim 1 wherein the aqueous slurry of calcareous and siliceous materials has a CaO/SiO2 molar ratio ranging from 0.65/1 to 1.3/1 and is stabilized with 0.1 to 30.0 percent by weight of solids of the reinforcing fibers.
Claim 8
Dependent Claim
16 words
A method according to claim 1 wherein the reinforcing fibers are glass fibers and wood fibers.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |