Pinch and base structure for single-ended lamps

Claim 1

In a single ended, miniature lamp having at least one filament, at least two lead wires and a pressed end, the improvement comprising: said pressed end having an elongated, rectangular cross-section and forming a shoulder where said cross-section merges with the bulbous portion of said lamp; ridges in said pressed end at the ends of said rectangle extending from said shoulder and parallel to the axis of said lamp; channels in a long side of said pressed end, said channels being approximately parallel to the axis of said lamp and located in the central region of said long side; and two piece, electrically conductive base means wherein each piece comprises a folded sheet having U-shaped portions adjacent each other to define an enlarged region for enclosing a short side of said press end, the outside leg of at least one U engaging one of said channels, said piece defining cut-outs for receiving said ridges and having a straight portion electrically connected to one of said lead wires.