Patent · US Expired

Electric lamp with rotatable base including compressed contacts

US6210021A · kind A · utility

1Cited by

11References

8Claims

0Family size

Assignee

Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH · DE

Inventors

Peter Helbig · Sontheim, DE
Gerhard Behr · Riedlingen, DE

Key dates

Filing date	Aug 23, 1999
Grant date	Apr 3, 2001
Priority date	—
Expiry date	Aug 23, 2019

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF21W2111/00
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to an electric lamp, the cap (3) of which has at least two resilient tabs (8), which are each provided with a latching lug (8a), and an attachment ring (6), which is mounted so that it can rotate about its ring axis, the tabs (8) bearing against the inside of the attachment ring (6) with a clamping fit, and the inside having wall areas which are at different distances from the ring axis. By rotation of the attachment ring (6), pressure is exerted on the tabs (8) and the latching connection of the latching lugs (8a) in the lamp holder is released.

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