US 5,703,428 A · Electric mains voltage lamp

Abstract

The electric mains voltage lamp has a lamp cap with a cylindrical portion abutting a glass envelope. A resilient cover member circumferentially clamps around and covers the cylindrical portion of the lamp cap and has a circumferential, outwardly extending, flexible collar. The cover member may also cover a cylindrical portion of the envelope which is adjacent the lamp cap. If the envelope is tubular in shape, the cover member may be a sleeve closed at an end thereof which is remote from the lamp cap, so as to cover the whole of the envelope. If the lamp has a bulbous envelope, the lamp may have a resilient domeshaped member covering a portion of the envelope opposite the lamp cap and having an overlap with the cover member. The lamp is able to provide a gastight connection to a lampholder.

Claims17

Dependent claims

An electric mains voltage lamp comprising:

a sealed glass envelope having an axis;
a lamp cap fixed to the envelope and surrounding the axis thereof, said lamp cap having contacts and a substantially cylindrical portion abutting the envelope;
an electric element inside the envelope, from which current conductors extend to the contacts of the lamp cap;
a resilient cover member circumferentially clamping around and covering at least a portion of the lamp,
characterized in that:
the cover member clamps around and covers the cylindrical portion of the lamp cap, leaving bare the contacts thereof, and has a first circumferential, outwardly extending flexible collar.

3 more elements

Dependencies are inferred from the claim text.

Electric mains voltage lamp

Life of this patent

Electric mains voltage lamp

Life of this patent

Abstract

Claims17