Patent US4039170A successfully refreshed from Google Patents.
US4039170A
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US
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System of continuous dustless mixing and aerating and a method combining materials
Assignee: Individual
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Filing: 1975-09-08
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Granted: 1977-08-02
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Expires: 1995-09-08
Abstract
Abstract This invention consists of a method of continuous dustless mixing and aerating of cementitious compositions and a mechanical arrangement for conveying and combining materials.
Inventors
- 👤 Charles E. Cornwell
- 👤 Mark Plunguian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:08
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B28/04; A; A62; A62C; A62C5/00; B; B28; B28C; B28C5/00; B28C5/003; B28C9/00; B28C9/002; B28C9/004; C04B28/06; E; E01; E01C; E01C23/00; E01C23/16; E01C23/20; E01C23/22; E01F; E01F9/00; E01F9/50; E01F9/506; C04B2103/00; C04B2103/30; C04B2103/302; C04B2111/00; C04B2111/00474; C04B2111/00482; C04B2111/00577; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
93 words
A continuous process for the production of cementitious compositions comprising the steps of simultaneously supplying separate flows of water and a blend of dry cement and aggregate to a common junction where the flows are intermixed into a common flow upon coming in contact; moving the common flow through a path containing a series of angularly disposed baffles causing a turbulence and uniform mixing of the combined flows; further comprising adding a flow of preformed foam to the flow of mixed cementitious composition and conveying the final combined flows to a discharge nozzle.
Claim 2
Dependent Claim
93 words
A continuous process for the production of cementitious compositions comprising the steps of simultaneously supplying separate flows of water and a blend of dry cement and aggregate to a common junction where the flows are intermixed into a common flow upon coming in contact; moving the common flow through a path containing a series of angularly disposed baffles causing a turbulence and uniform mixing of the combined flows; further comprising adding a flow of preformed foam to the flow of mixed cementitious composition and conveying the final combined flows to a discharge nozzle.
Claim 3
Dependent Claim
25 words
The process of production of claim 1 wherein the cement is selected from the group consisting of portland cement, calcium aluminate cement, and gypsum cement.
Claim 4
Dependent Claim
32 words
The process of production of claim 1 wherein cement additives are admixed to the cementitious composition, such additives being selected from the group of materials comprising curing accelerators, retarders, and water reducers.
References Cited (Backward Citations)
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Cited
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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) | 1980-08-01 | 1981-01-31 | 1981-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-01 | 1985-01-31 | 1985-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-01 | 1989-01-31 | 1989-08-02 | $7700.00 | Window Closed / Lapsed |