Method for statically forming rolled lampshade edges
AssigneeCorep
InventorHubert Juillet
Life of this patent
Estimating the term…
Abstract
Lampshades are formed by fitting a lampshade blank on a mandrel of complementary shape, which mandrel also supports upper and lower metal hoops to be incorporated into the lampshade. The edges of the lampshade blank are then locally heated and deformed to surround the metal hoops. The deformation of the heated edges of the lampshade blank may advantageously be effected by surrounding the lampshade/mandrel assembly with a membrane, and forcing the membrane into contact with the assembly.
Claims4
Method of producing a lampshade, comprising fitting a lampshade blank of thermoplastic material and at least one metal hoop on a mandrel, locally heating only edge regions of said lampshade blank, to a softening point of said thermoplastic material, surrounding said lampshade blank and said mandrel with a deformable membrane, and forcing said deformable membrane into contact with said lampshade blank and said mandrel, thereby to deform said heated edge regions to surround said at least one metal hoop.
Dependencies are inferred from the claim text.