Patent · US Expired

Electric lamp

US6570308B1 · kind B1 · utility

1Cited by

3References

11Claims

0Family size

Assignee

Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH · DE

Inventors

Peter Helbig · Sontheim, DE
Hans-Peter Wild · Eppelheim, DE
Gerhard Behr · Riedlingen, DE

Key dates

Filing date	Mar 14, 2001
Grant date	May 27, 2003
Priority date	—
Expiry date	Apr 13, 2021

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF21S43/19
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electric lamp with a base (6), which is structurally subdivided into an upper part (7) that retains the bulb and a substantially circular-cylindrical lower part (5) for external fastening, which lower part protrudes past the upper part, and the protruding portion (13) is embodied as a detent mechanism for the external fastening. The detent mechanism in each case includes an inward-facing detent protrusion (20) located on the outside, which is an integral component of the lower part, and a metal spring (24), located opposite the detent protrusion and cooperating with it, that is secured in the lower part.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.