Patent ID: 7154226

Claim:
A capped electric lamp comprising: a light-transmitting lamp vessel accommodating an electrical element; a lamp cap provided with a projection contact pin having a longitudinal axis, which lamp is secured to the lamp vessel; a current-supply conductor which is connected to the electrical element and to the contact pin; and an indentation being formed in the contact pin to fix the current-supply conductor, wherein the indentation comprises a weakening portion for weakening the current-supply conductor during the manufacture of the electric lamp and comprises a fixation portion for fixing the current-supply conductor in the contact pin, wherein the weakening portion and the fixation portion of the indentation are substantially parallel to each other, wherein the indentation between the weakening portion and the fixation portion comprises a narrow portion which is relatively narrow compared with the weakening portion and the fixation portion, and wherein the ratio of the width w np of the narrow portion to the width w wp of the weakening portion complies with the relation: 0.2 ≤ w np w wp ≤ 0.5 .