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Reinforced Sheet Metal Corner

IP.com Disclosure Number: IPCOM000091931D
Original Publication Date: 1968-Jul-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 63K

Publishing Venue

IBM

Related People

Halvarson, EH: AUTHOR

Abstract

A corner having high strength and rigidity is fabricated solely by forming a single fiat piece of sheet metal. No bonding or cutting is required. Angles can be varied to provide other than square corners. Drawing A shows a corner formed of two vertical sides 1 and 2 intersecting at 90 degrees and joined to bases 3 and 4, respectively, extending at right angles to 1 and 2. Bases 3 and 4 abut at 5 along a 45 degree angle to form a mitered joint as in B. Excess material is bent to form substantially identical underlying portions 6 and 7 joined by common overlying portion 8. As shown in C and D after bending along 10 to provide a right angle between the sides and base, the sheet is creased at 11 and sides 1 and 2 are swung toward each other.

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Reinforced Sheet Metal Corner

A corner having high strength and rigidity is fabricated solely by forming a single fiat piece of sheet metal. No bonding or cutting is required. Angles can be varied to provide other than square corners. Drawing A shows a corner formed of two vertical sides 1 and 2 intersecting at 90 degrees and joined to bases 3 and 4, respectively, extending at right angles to 1 and 2. Bases 3 and 4 abut at 5 along a 45 degree angle to form a mitered joint as in B. Excess material is bent to form substantially identical underlying portions 6 and 7 joined by common overlying portion 8. As shown in C and D after bending along 10 to provide a right angle between the sides and base, the sheet is creased at 11 and sides 1 and 2 are swung toward each other. Simultaneously, portion 8 is raised and creases are formed at 12a and 12b and 13a and 13b to tuck portions 6 and 7 under 8, through successive forming steps. These occur until the finished corner is formed as shown in drawings A, B, and E.

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