Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Reexamination Certificate
2003-02-18
2008-11-25
Safavi, Michael (Department: 3637)
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Shaping against forming surface
C264S300000, C249S039000, C249S063000
Reexamination Certificate
active
07455803
ABSTRACT:
A wall and port form for forming a concrete wall having a port for mounting a window or a door includes a building wall form having a wall form perimeter wall and a wall form bottom wall; a portal form for placement within the building wall form perimeter wall for defining an opening for one of a door and a window, the portal including a portal form perimeter wall configured as a closed loop encompassing a port space and preventing concrete poured into the wall form from flowing into the port space encompassed by the portal form, and a form spacing and dislodgement mechanism for spacing the portal form from the building wall form bottom wall upon curing of concrete within the wall form and thereby dislodging the portal form from the grip of the concrete.
REFERENCES:
patent: 1863549 (1932-06-01), Lockwood
patent: 2515977 (1950-07-01), Banneyer
patent: 2557631 (1951-06-01), Callan
patent: 2602983 (1952-07-01), Troiel
patent: 5169544 (1992-12-01), Stanfill et al.
patent: 5855806 (1999-01-01), Caltrider
Kubler Frank L.
Safavi Michael
LandOfFree
Window and door form for prefabricated concrete walls does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Window and door form for prefabricated concrete walls, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Window and door form for prefabricated concrete walls will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4037343