Static molds – In situ construction engineering type or building type-mold... – Post in situ
Reexamination Certificate
2005-01-11
2005-01-11
Safavi, Michael (Department: 3673)
Static molds
In situ construction engineering type or building type-mold...
Post in situ
C249S048000
Reexamination Certificate
active
06840491
ABSTRACT:
A prefabricated concrete form for the pouring of a footing for a structural pillar is disclosed. The form is preferably constructed from a thermoplastic such as a high density polyethylene or ABS and is molded as a single disposable unit. The form is bell-shaped and has dimensions which render it useful in industrial size applications with large footprints. The dimensioning of the form also reduces the amount of material used for the manufacture of the form, allows the form to be backfilled without cave-in and to reliably support a tubular form for the pillar without an additional bracing or supporting structure. The form is in particular a low profile form wherein the sidewall is inclined at an angle below 45° relative to the bottom edge. A top flange of the form is preferably adapted to accommodate two or more different diameters of the tubular form for the structural pillar. The sidewall may include integral ribs which open inwardly to facilitate evacuation of air as the form is filled and to lend rigidity to the sidewall. The sidewall may further include vent openings for the escape of air which is possibly temporarily entrapped during filling of the form. The advantage is an inexpensive form which does not have an excessive height despite large footprints, fills reliably and supports a tubular form for a pillar without the need for cross-pieces, even at sidewall angles below 45°.
REFERENCES:
patent: 4673157 (1987-06-01), Wells
patent: 5271203 (1993-12-01), Nagle
patent: 5785459 (1998-07-01), Swinimer
patent: 5800727 (1998-09-01), Croghan
patent: 6543742 (2003-04-01), Wells
F & S Manufacturing Inc.
Safavi Michael
LandOfFree
Footing form does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Footing form, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Footing form will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3380902