Static molds – In situ construction engineering type or building type-mold... – Forming hydraulic and earth control type product in situ
Patent
1989-11-30
1991-02-26
Silbaugh, Jan H.
Static molds
In situ construction engineering type or building type-mold...
Forming hydraulic and earth control type product in situ
249 11, 249165, 249189, 264 32, 264 36, 425 11, 425 59, E02D 2912, E04G 1120
Patent
active
049955845
ABSTRACT:
Apparatus for casting poured concrete liners in manholes or the like wherein a collection of sheet-metal, flanged, arcuate panels is provided which panels can be assembled in belts of generally circular cross-section commencing from the bottom of the manhole to provide a complete form structure for casting a concrete liner with a minimum thickness of about three inches and including openings created by sectional cylindrical inserts, all of which can be assembled, then disassembled after the concrete liner has set. An extensive variety of panels to accommodate different shapes of manholes includes panels for forming right conical belts, for forming offset conical belts, and for forming wedge-shaped belts to make transitions between vertical and tilted sections of the manhole. A key-panel for these various belts is provided to prevent capture of the panels by the poured concrete liners which includes a relatively narrow portion with vertical flanges fixed at an angle to one another which angle diverges toward the center of the form structure.
REFERENCES:
patent: 992782 (1911-05-01), Lambie
patent: 3542327 (1970-11-01), Herzog
patent: 3729165 (1973-04-01), Trimble
patent: 3815214 (1974-06-01), Kyle, Sr.
patent: 4081167 (1978-03-01), Heinzle
patent: 4119291 (1978-10-01), Polito
patent: 4127990 (1978-12-01), Morrow
patent: 4205949 (1980-06-01), Hansen
patent: 4261541 (1981-04-01), Morrow
patent: 4484724 (1984-11-01), Srackangast
Action Products Marketing Corporation
Silbaugh Jan H.
Vargot Mathieu
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