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| Number | Title | Issue Date |
| 5855468 | Method and apparatus for setting foundry core assemblies The present invention permits reliable lifting and inverting of one or more casting core elements and positioning the one or more casting core elements in a mold flask. The invention generally includes an outer frame and an inner frame assembly, which are... | 01/05/1999 |
| 5492303 | Formwork for surfaces varying in curvature Formwork for surfaces varying in curvature has a face sheet adjustable with respect to its curvature, girders supporting the face sheet and applied to the girders, in spaced relationship to the face sheet, there is a boom system which is composed of indiv... | 02/20/1996 |
| 5382155 | Molds for forming cardboard boxes The mold that belongs to a cardboard box forming machine is comprised of four forming corners, equal to each other, assembled in such a way that they can be moved longitudinally and transversally in order to carry out the adjustment of length as well as w... | 01/17/1995 |
| 5315806 | Structure for concrete frameworks and means and procedures for its making The said structure presents a constitution which, as well as providing a great resistance, supposes an effective reduction of the depth of floor slabs and technical layers built with current construction systems while allowing the incorporation of various... | 05/31/1994 |
| 4917346 | Concrete form shuttering A form for erecting structures having an plan shape, any generatrix and possibly changing wall thickness includes an inner form (1) and an outer form (2). Circumferentially closed support rings (5,6) are arranged horizontally spaced from the inner form as... | 04/17/1990 |
| 4804320 | Sliding shuttering device The invention relates to a sliding process for producing concrete structure walls and a sliding shuttering means for erecting or installing monolithic block brackets, praticularly in the case of annular structures. In order to permit a continuous installa... | 02/14/1989 |
| 4465257 | Concrete forming structure having a double hinge filler A concrete forming structure including a collapsible form having at least one form panel section and a rigid corner adjacent thereto and with the panel section having a forming face. A two-way hinge filler structure between the section and the rigid corne... | 08/14/1984 |
| 4463925 | Concrete form structure including one-way escape hinge A concrete forming structure including a collapsible form having at least one form panel section. The section having a marginal flange structure mounted thereon at one side and vertically spaced slots on the marginal flange structure for receiving wedge b... | 08/07/1984 |
| 4258897 | Structure for forming concrete troughs in the ground A method and structure in which a Y- or V-shaped trench is dug in the ground for spatially receiving a smaller, complentarily shaped form that is supported in the trench by re-enforcing rods or the like that remain in the set-up concrete when the form is ... | 03/31/1981 |
| 4055321 | Inside concrete corewall form with particular three-way hinge assemblies therefor An inside articulated and collapsible form adapted for use in the formation of a rectangular concrete corewall and having at its corners novel three-way hinge assemblies including main hinge leaves which are movable between right angular positions wherein... | 10/25/1977 |
| 4032282 | Apparatus for forming bells on plastic tubes Apparatus for forming internally grooved bells on plastic tubes having a mandrel comprising coaxial front and rear mandrel elements spaced apart to form a gap, angularly spaced supporting pins joining internal flanges on the elements across the gap, two s... | 06/28/1977 |
