Manufacture of asbestos-cement products

• US 3,219,467 A
• Filed: 09/09/1960
• Issued: 11/23/1965
• Est. Priority Date: 09/09/1960
• Status: Expired due to Term

• Current Assignee: Francis W. Redican, Julie C. Yang, Laurence R. Blair, Richard J. Gorman
• Original Assignee: Francis W. Redican, Julie C. Yang, Laurence R. Blair, Richard J. Gorman
• Inventors: Redican, Francis W., Blair, Laurence R., Yang, Julie C., Gorman, Richard J.
• Application Number:
  US04/054,907
• Time in Patent Office: 1,901 Days
• US Class Current: 106/703
• CPC Class Codes: C04B 14/06 Quartz; Sand
• CPC Class Codes: C04B 14/40 Asbestos
• CPC Class Codes: C04B 2201/10 for the viscosity
• CPC Class Codes: C04B 24/14 Peptides; Proteins; Derivatives thereof
• CPC Class Codes: C04B 24/22 Condensation or polymerisation products thereof
• CPC Class Codes: C04B 24/26 obtained by reactions only involving carbon-to-carbon unsaturated bonds C04B24/243 takes precedence
• CPC Class Codes: C04B 24/2623 Polyvinylalcohols; Polyvinylacetates
• CPC Class Codes: C04B 24/2652 Nitrogen containing polymers, e.g. polyacrylamides, polyacrylonitriles
• CPC Class Codes: C04B 24/32 Polyethers, e.g. alkylphenol polyglycolether
• CPC Class Codes: C04B 24/383 Cellulose or derivatives thereof
• CPC Class Codes: C04B 28/02 containing hydraulic cements other than calcium sulfates
• CPC Class Codes: C04B 28/04 Portland cements
• CPC Class Codes: C04B 28/08 Slag cements
• CPC Class Codes: C04B 40/00 Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability active ingredients C04B22/00 - C04B24/00; hardening of a well-defined composition C04B26/00 - C04B28/00; making porous, cellular or lightening C04B38/00; mechanical aspects B28, e.g. conditioning the materials prior to shaping B28B17/02
• CPC Class Codes: C04B 40/0028 Aspects relating to the mixing step of the mortar preparation
• CPC Class Codes: C04B 40/02 Selection of the hardening environment
• CPC Class Codes: E04C 2/00 Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels materials or manufacture, see the relevant subclasses, e.g. B27N, D21J; made in situ E04B; specially designed for insulation or other protection E04B1/62; load-carrying floor structures E04B5/02, E04B5/16; roofs consisting of self-supporting slabs E04B7/20; roof or like covering elements E04D3/00; for lining or finishing E04F13/00
• CPC Class Codes: E04C 2/04 of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibresE04C2/26 takes precedence; material or manufacture B28, C04
• CPC Class Codes: E04F 13/148 with an outer layer of asbestos cement or the like

Claims

1. A METHOD OF PRODUCING GOOD QUALITY, SHAPED, CURED, ASBESTOS-CEMENT PRODUCTS, SAID METHOD COMPRISING:

(A) PROVIDING AN UNDURED MIXTURE COMPRISING;