Reinforced lumber
OwnerAlbert B. Curtis, J. Kenneth Brodyinventors
Life of this patent
Estimating the term…
Abstract
A wooden beam is reinforced with a polyester rod glued within groove on surface to increase the ultimate strength of the beam under stress and reduce deviation of strength between beams.
Claims13
A composite integral structural support member adapted to be cut to the desired length, if necessary, and incorporated into a load bearing structure for the purpose of accepting at least a portion of the load imposed upon such structure, said member comprising a wooden beam, a groove of predetermined depth longitudinally disposed within a surface of said wooden beam, and an unstressed nonwood, nonmetallic reinforcing rod adhesively fixed within said groove whereby said support member has an ultimate strength greater than that of said wooden beam.
A reinforced structural support member comprising a wooden beam, a groove of predetermined depth longitudinally disposed within a surface of said wooden beam, and an unstressed reinforcing rod of glass fibers bonded with a polyester resin adhesively affixed within said groove.
A reinforced structural support member comprising a wooden beam, a groove of predetermined depth longitudinally disposed within a surface of said wooden beam, a plurality of holes in the bottom of said groove, and an unstressed reinforcing rod adhesively affixed within said groove.
A reinforced structural support member comprising a wooden beam, a groove of predetermined depth longitudinally disposed within a surface of said wooden beam, a plurality of notches in the wall of said groove extending in a direction transverse to the longitudinal axis of said groove, and an unstressed reinforcing rod adhesively affixed within said groove.
Dependencies are inferred from the claim text.