Patent · US Expired

Inductive base detachment method

US6109992A · kind A · utility

1Cited by

4References

8Claims

0Family size

Assignees

ALD VACUUM TECHNOLOGIES GMBH · DE
Paul Frankenbach · DE

Inventors

Albrecht Melber · Darmstadt, DE
Erwin Wanetzky · Großkrotzenburg, DE
Paul Frankenbach · Bocholt, DE

Key dates

Filing date	Aug 10, 1998
Grant date	Aug 29, 2000
Priority date	—
Expiry date	Aug 10, 2018

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02W30/82
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

Apparatus and method for removing metal bases from glass bulbs such as fluorescent lamps for the salvaging of raw materials therein for reuse. The method comprises providing an inductive field coil about at least one end of the glass bulb having the metal base, heating the metal base by induction to expand and loosen the same, then gripping and pulling the metal base from the bulb. The bulb is kept intact for later salvaging operations such that the removed bases are uncontaminated by mercury. The apparatus can include non-magnetic grippers such as ceramic jaws for the gripping of the metallic bases.

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