Structural beam and blank for forming it

Details Structural beam and blank for forming it Structural beam and blank for forming it

1986-10-07

1987-11-24

Kannan, Philip C.

Amusement devices: toys

Foldable, collapsible, or having pivoted portion

Sheet material folded to form object

446106, A63H 3300, A63H 3308

Patent

active

047086912

ABSTRACT:
A three dimensional reinforced structural beam and a blank from which it is made is disclosed. It has a rectangular bottom (2), parallel wall portions (4) and (8), rectangular top portions (12) and (16), and two parallel rectangular rib portions (20) and (24). The beams may be provided with notches (32) and (34), and a tab 50 and slot 54 to facilitate assembly.

REFERENCES:
patent: 1258086 (1918-03-01), Bennett
patent: 1533011 (1925-04-01), Knaggs
patent: 2075259 (1937-03-01), Battjes
patent: 2751705 (1956-06-01), Joseph
patent: 2832100 (1958-04-01), Swallert
patent: 2874512 (1959-02-01), Joseph et al.
patent: 2946150 (1960-07-01), Houk
patent: 3066436 (1962-12-01), Schuh
patent: 3368316 (1968-02-01), Crowder
patent: 3581431 (1971-06-01), Trenovan
patent: 4523418 (1985-06-01), McLaughlin

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