초록 ▼

An improved hanger bar assembly includes a first hanger bar member and the plurality of longitudinal elongated slots and a plurality of reinforcing formations. The reinforcing formations being separated from one another by at least one of the slots and those slots being separated from each other by

An improved hanger bar assembly includes a first hanger bar member and the plurality of longitudinal elongated slots and a plurality of reinforcing formations. The reinforcing formations being separated from one another by at least one of the slots and those slots being separated from each other by at least one of the reinforcing formations. A second hanger bar member is interfitted with the first hangar bar member, the second hanger bar member having a plurality of spaced retaining projections. At least one of the retaining projections engaging at least one of the slots in order to couple the first and second hanger bar members together in a longitudinally extensible manner.

대표청구항 ▼

[ What is claimed is:] [1.] A hanger bar assembly comprising:a first hanger bar member having a plurality of slots elongated in a longitudinal direction, and a plurality of reinforcing formations, said reinforcing formations being separated from each other in the longitudinal direction by at least o

[ What is claimed is:] [1.] A hanger bar assembly comprising:a first hanger bar member having a plurality of slots elongated in a longitudinal direction, and a plurality of reinforcing formations, said reinforcing formations being separated from each other in the longitudinal direction by at least one of said slots, said plurality of slots being separated from each other in the longitudinal direction by at least one of said reinforcing formations;a second hanger bar member interfitted with said first hanger bar member, said second hanger bar member having a plurality of spaced retaining projections, at least one of said slots on the first hanger bar member being engaged by one of said projections at all times in order to couple said first and second hanger bar members together in a longitudinally extensible manner.