US4011355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emulsion coating for lightweight aggregate
Assignee: Individual
•
Filing: 1975-04-28
•
Granted: 1977-03-08
•
Expires: 1995-04-28
Abstract
Abstract A coated, lightweight aggregate for mixing with cement, sand and water for producing a lightweight construction material is provided in which expanded polystyrene beads are coated with a mixture formed of dehydrated lime and hydrated alumina with water in an amount to impart a suitable consistency and a wetting agent. A method of making the mixture and coating the beads is also provided.
Inventors
- 👤 Theodore O. Mandish
- 👤 Doneath M. Mandish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:57
CPC Classifications
C; C04; C04B; C04B20/00; C04B20/10; C04B20/1055; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2998
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
126 words
A method of making a lightweight, coated aggregate for use in forming a lightweight concrete material, comprising the steps of: a. forming a mixture of approximately equal parts by volume of dehydrated lime and hydrated alumina in combination with water having a wetting agent therein to form a suitable consistency when thoroughly mixed in a mixer; b. coating lightweight expanded polymer beads with said mixture; and c. mixing cement with said coated expanded beads; said aqueous mixture of dehydrated lime and hydrated alumina, polymer beads and cement being employed in a ratio such that approximately 1 to 2 quarts of said aqueous mixture of dehydrated lime and hydrated alumina are employed for each approximately 6 cubic feet of polymer beads and approximately 2 quarts of cement.
Claim 2
Independent Claim
126 words
A method of making a lightweight, coated aggregate for use in forming a lightweight concrete material, comprising the steps of: a. forming a mixture of approximately equal parts by volume of dehydrated lime and hydrated alumina in combination with water having a wetting agent therein to form a suitable consistency when thoroughly mixed in a mixer; b. coating lightweight expanded polymer beads with said mixture; and c. mixing cement with said coated expanded beads; said aqueous mixture of dehydrated lime and hydrated alumina, polymer beads and cement being employed in a ratio such that approximately 1 to 2 quarts of said aqueous mixture of dehydrated lime and hydrated alumina are employed for each approximately 6 cubic feet of polymer beads and approximately 2 quarts of cement.
Claim 3
Dependent Claim
29 words
The method in accordance with claim 1 including the step of mixing glass fibers with said lightweight, expanded polymer beads and said mixture of dehydrated lime and hydrated alumina.
References Cited (Backward Citations)
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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) | 1980-03-07 | 1980-09-06 | 1981-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-07 | 1984-09-06 | 1985-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-07 | 1988-09-06 | 1989-03-08 | $7700.00 | Window Closed / Lapsed |