Void forming core formwork for concrete beam

Details Void forming core formwork for concrete beam Void forming core formwork for concrete beam

2008-04-08

2008-04-08

Safavi, M. (Department: 3637)

Static structures (e.g., buildings)

Having means forming cavity, core, or cell in slab

Thin-walled type

C249SDIG004

Reexamination Certificate

active

07353641

ABSTRACT:
To render a formwork (10), having a hollow (11b) defined therein and embedded in the elongated concrete member (40) during casting of a concrete material, to be lightweight, environmentally friendly and inexpensive and to have a sufficient strength, the formwork (10) includes a tubular member (11) formed by bending an oblong plate of corrugated cardboard (5) made of paper. The corrugated cardboard plate (5) includes a plurality of corrugated cardboards (3) laminated together and each formed by bonding liner sheets (2) to surfaces of a corrugated sheet (1). The corrugated cardboards (3) are laminated together with flutes of the corrugated cardboards (3) oriented in a direction (P) across a thickness of the corrugated cardboard plate (5), and a sheet (4) is bonded to front and rear major surfaces thereof.

REFERENCES:
patent: 941256 (1909-11-01), Jenkins
patent: 1543205 (1925-06-01), Crowell
patent: 1953410 (1934-04-01), Jacobson
patent: 2477852 (1949-08-01), Bacon
patent: 2501180 (1950-03-01), Kunz
patent: 2985553 (1961-05-01), Anderson
patent: 3024513 (1962-03-01), Shuxteau et al.
patent: 3293107 (1966-12-01), Wells et al.
patent: 3518142 (1970-06-01), Dooley
patent: 3549116 (1970-12-01), Ferry et al.
patent: 3559867 (1971-02-01), Muskopf et al.
patent: 3859125 (1975-01-01), Miller et al.
patent: 3913822 (1975-10-01), Heaps, Jr.
patent: 4188761 (1980-02-01), McKay
patent: 4647063 (1987-03-01), Piringer et al.
patent: 4685267 (1987-08-01), Workman
patent: 5040696 (1991-08-01), Liebel
patent: 5102272 (1992-04-01), Woods et al.
patent: 5492267 (1996-02-01), Hollander et al.
patent: 5782049 (1998-07-01), Gates et al.
patent: 6007470 (1999-12-01), Komarek et al.
patent: 6029884 (2000-02-01), Roeland
patent: 6050043 (2000-04-01), Rosenblat et al.
patent: 6722560 (2004-04-01), Player et al.
patent: 6794017 (2004-09-01), Comeau et al.
patent: 2198042 (1974-03-01), None
patent: 59229341 (1984-12-01), None
patent: 60-002897 (1985-01-01), None
patent: 2001161458 (2001-06-01), None

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