Concrete admixture device and method of using same
Patent 4961790 Issued on October 9, 1990. Estimated Expiration Date: 
May 19, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 19, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2700461 3294224 3860219 Cartridges of fast setting cement and gelled water Patent #: 4772326 InventorsAssigneeApplicationNo. 354299 filed on 05/19/1989US Classes:106/823, Organic material containing additive (e.g., carbohydrate, bituminous material, etc.)106/725, Organic sulfur compound106/726, Cellulose or silica containing (e.g., sand, etc.)106/809, Organic sulfur106/819, Additive materials for inorganic cements which contain a hydraulic settable material106/900, SOIL STABILIZATION524/4Solid polymer or specified intermediate condensation product derived from at least one oxygen-containing reactant and which is devoid of a fused ring or bridged ring systemExaminersPrimary: Dixon, William R. Jr.Assistant: Bonner, Melissa Attorney, Agent or FirmInternational ClassesC04B 022/00C04B 024/00 AbstractA device comprising a solid or powdered concrete admixture contained in a water-soluble container such that when the container and its contents are introduced into a wet mixer and agitated for a period of time, the water-soluble container is dissolved and the contents are released into the wet mixer. A separate water-insoluble receptacle is used to house and store the water-soluble container and its contents. In addition, there is disclosed a method for modifying the properties of a concrete by introducing a pre-weighed amount of solid admixture contained in a water-soluble container into a wet mixer and thereafter agitating the resulting mix. | |
