Patent ID: 8608887

Claim:
A method for manufacturing corner protectors for rectangularly-shaped frames, said method comprising; a. providing a stack of corner protector pre-forms, each pre-form comprising a thin sheet of flexible material which has a mirror symmetric shape about a central longitudinal axis thereof, b. arranging a vertically aligned stack of said pre-forms each of which is horizontally disposed, c. advancing a single pre-form from said stack to a work station, d. retaining said pre-form at said work station, e. bending a first section of said pre-form perpendicularly upright to the plane of said pre-form, f. bending a second section of said pre-form perpendicularly upright to the plane of said pre-form, g. bending a rectangular sub-section of said first upright section of said pre-form perpendicularly towards said second upright section of said pre-form, h. applying an adhesive blob to one of a surface of said rectangular sub-section of said first upright section of said pre-form and a surface of a rectangular sub-section of said second upright section of said pre-form, I. bending said rectangular sub-section of said second upright section of said pre-form into compressive contact with said adhesive blob to thus adhesively bond said rectangular sub-section of said first upright section to said rectangular sub-section of said second upright section of said pre-form, j. bending a first spring flap section from one of said first and second upright sections of said pre-form inwardly towards the other of said first and second upright sections and downwards until said first spring flap section elastically contacts an inner facing upright surface of the other of said upright sections, k. bending a second spring flap section from the other of said first and second upright sections of said pre-form inwardly towards the other of said first and second upright sections and said first spring flap section and downwards until said second spring flap section elastically contacts said first spring flap section, and l. releasing said finished corner protector from said work station.