초록 ▼

An appliance frame having a score line formed by pressing metal to form a plurality of dimples each having a substantially straight severed edge extending out of the plain of the metal and arranged in a substantially straight line to form the score line, thereby to weaken the metal sufficiently that

An appliance frame having a score line formed by pressing metal to form a plurality of dimples each having a substantially straight severed edge extending out of the plain of the metal and arranged in a substantially straight line to form the score line, thereby to weaken the metal sufficiently that it may be manually bent to form a substantially right-angle bend at the score line.

대표청구항 ▼

A frame work formed from a prescored substantially planer sheet of sheet metal, said frame work being adapted to be formed so that at least one panel thereof extends at an angle to an adjacent panel comprising a straight score line forming the line of demarcation between said panels, said straight s

A frame work formed from a prescored substantially planer sheet of sheet metal, said frame work being adapted to be formed so that at least one panel thereof extends at an angle to an adjacent panel comprising a straight score line forming the line of demarcation between said panels, said straight score line being formed of a plurality of spaced dimples pressed from said sheet metal, each of said dimples having a straight severed edge pressed from the plane of said sheet metal, said severed edges on said dimples being parallel and extending substantially along said straight score line, the remainder of said sheet metal along said score line and adjacent said straight edges of said dimples being substantially in tact, the length of said severed edges and number of said dimples and the spacing therebetween being coordinated so that said sheet metal may be manually folded on said score line provide an accurately positioned fold.