Plastic article or earthenware shaping or treating: apparatus – Control means responsive to or actuated by means sensing or... – Means responsive to abnormal condition completely stop...
Patent
1989-04-10
1990-03-20
Housel, James C.
Plastic article or earthenware shaping or treating: apparatus
Control means responsive to or actuated by means sensing or...
Means responsive to abnormal condition completely stop...
249 64, 249145, 249176, 249178, 264334, 425150, 425253, 425413, 425414, B28B 730, B28B 304
Patent
active
049097172
ABSTRACT:
The biaxial CM casting apparatus utilizes one or more main mold cores having an automatically extensible and retractable plunger or like structure extending laterally into the mold cavity from the one or more main mold cores along an axis substantially orthogonal to the axis of casting during certain selected phases of the CM casting process to form one or more openings or other structural changes in the casted concrete which openings or changes extend in the direction of a second axis normal to the casting axis.
REFERENCES:
patent: 1202038 (1916-10-01), Eastman
patent: 1321938 (1919-11-01), Norton
patent: 1548485 (1925-08-01), Quimby
patent: 1623560 (1927-04-01), Sherman
patent: 2680276 (1954-06-01), Filangeri
patent: 3415482 (1968-12-01), Schmidgall
patent: 3543458 (1970-12-01), Guritz
patent: 4274824 (1981-06-01), Mullins
patent: 4614326 (1986-09-01), Strickland et al.
Housel James C.
National Concrete Masonry Association
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