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US 4,379,376 AGranted
Universal edge guard
AssigneeU.S. Product Development Company
InventorRobert Adell
Life of this patent
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AssigneeU.S. Product Development Company
InventorRobert Adell
Estimating the term…
A universal edge guard comprises a generally U-shaped metal channel having inner and outer legs with the cross section of the channel being formed into a generally semi-circular base with beads at the ends of the inner and outer legs being inwardly offset. A pattern of notches is formed in the inner leg with the notches extending from the bead along the inner leg and into the semi-circular base terminating just slightly beyond the mid-point of the base. The pattern of notches has uniformly sized notches with the notches being equally spaced apart. The preferred pattern has the notches at about one-half inch spacing and the notches about three-sixteenths inch in width. The construction allows the edge guard to be contoured to the contour of an edge without the use of additional manufacturing procedures to conform the edge guard to the desired cross section. The edge guard may also be readily cut to length by severing at one of the notches. The preferred embodiment incorporates a vinyl insulating liner lining the interior of the channel and extending around the outside of the beads.
In an edge guard of the type comprising a metal strip formed into a generally U-shaped cross section having inner and outer legs and beads at the distal ends of the legs via which the edge guard is self-retained on the edge of an object when installed thereon, the improvement wherein the U-shaped cross section has a generally semi-circularly contoured base and includes inward offsets joining the ends of the base with each bead so that the beads are disposed in inwardly off-set relation to the diametrically opposite ends of the generally semi-circularly contoured base and including a pattern of notches spaced at intervals along the length of the inner leg, said notches extending from the distal end of the inner leg, along the inner leg, and into the generally semi-circular base.
The method of making an edge guard of the type comprising a metal strip formed into a generally U-shaped cross section having inner and outer legs comprising forming a series of longitudinally spaced notches along one side of the metal strip and then roll forming the metal strip into the U-shaped cross section having a generally semi-circular base with the distal ends of the legs being provided with beads which are inwardly offset relative to the ends of the base.
Dependencies are inferred from the claim text.