Famous Patents
In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
PatentStorm News
Make the Most of PatentStorm
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest patents by subscribing to an RSS feed.
Got questions? Ask a Patent Expert!
Registered users: Manage your profile, comments and alerts.
US Patent 5059371 - Method and apparatus for extrusion molding fiber-and cement-containing W/O type emulsion
US Patent Issued on October 22, 1991
Estimated Patent Expiration Date:
October 22, 2008Estimated 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.
Estimated Patent Expiration Date:
October 22, 2008Estimated 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.AbstractIn the case of extruding a W/O type emulsion having a high viscosity obtained by stirring a mixture of a vinyl monomer solution composed of a vinyl monomer which is water insoluble and in a liquid state at normal temperature, a surface active agent having a hydrophilic-lipophylic balance of 3 to 6, and a polymerization catalyst with water, cement, and synthetic fibers through a die, at least one rectifying plate having a given form is disposed in the die near the outlet thereof to direct the synthetic fibers in the W/O type emulsion to the extruding direction.When the tabular plate obtained by extrusion-molding the W/O type emulsion by the method of this invention is hardened and dried, a light-weight and high-strength plastic concrete suitable for building materials is obtained. | InventorsAssigneeApplicationNo. 039007 filed on 04/15/1987US Classes:264/108, ORIENTING OR ALIGNING SOLID PARTICLES IN FLUENT MATRIX MATERIAL264/211.24, Curing or polymerization in the extruder (includes incomplete polymerization or curing, or coagulating rubber)264/333, Inorganic hydraulic settable material shaping425/382.4, Including restriction upstream of shaping orifice and downstream of primary pressurizing means425/467Core, pin or insert memberField of Search264/108, ORIENTING OR ALIGNING SOLID PARTICLES IN FLUENT MATRIX MATERIAL264/211.11, Nonresinous material only (e.g., ceramic, soap, cellulose, etc.)264/211.24, Curing or polymerization in the extruder (includes incomplete polymerization or curing, or coagulating rubber)264/333, Inorganic hydraulic settable material shaping264/176.1, Shaping by extrusion264/82, REACTIVE GAS OR VAPOR TREATMENT OF WORK264/109, FORMING ARTICLES BY UNITING RANDOMLY ASSOCIATED PARTICLES264/125, Sintering or heat fusing particles264/126, Of organic material264/42, Of inorganic materials425/466, Adjustable shaping orifice or shape imparting insert member (e.g., core, etc.)425/467, Core, pin or insert member425/206, Within or at forming means425/207, Within pressurizing chamber425/382.4Including restriction upstream of shaping orifice and downstream of primary pressurizing meansExaminersPrimary: Thurlow, JefferyAttorney, Agent or FirmUS Patent References3168509, 3267518, 3532781, 3901991, 3972969, Manufacture of cement-resin composite articlesIssued on: 08/03/1976 Inventor: Rio , et al.4002713, Cementing compositions and concretes and mortars derived therefrom Issued on: 01/11/1977 Inventor: Duncan , et al.4048276, Structural building components and method for production on the basis of laterite Issued on: 09/13/1977 Inventor: Hansen , et al.4125497, Method for manufacturing heat-cured molded articles from cement Issued on: 11/14/1978 Inventor: Josten , et al.4202857, Casting of articles from compositions containing calcined gypsum and Portland cement Issued on: 05/13/1980 Inventor: Lowe4271112, Process for the manufacture of rotationally-symmetrical components from short-fibered molding material Issued on: 06/02/1981 Inventor: Rossman , et al.4293517Die with insert and its use Issued on: 10/06/1981 Inventor: Knox Foreign Patent References
International ClassB29C 047/12Foreign Application Priority Data1986-04-26 JP |
