Patent · US Expired

Device for gripping and holding a flat substrate

US6317406A · kind A · utility

3Cited by

6References

7Claims

0Family size

Assignee

Unaxis Deutschland GmbH · DE

Inventors

Michael König · Frankfurt, DE
Johannes Beul · Rehe, DE
Stefan Bangert · Lauentheil, DE

Key dates

Filing date	Apr 2, 1999
Grant date	Nov 13, 2001
Priority date	—
Expiry date	Apr 2, 2019

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB65G47/90
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A device for gripping and holding a compact disc comprising a housing, a plurality of grippers that are arranged in said housing, each of said grippers being provided with a magnet, said gripper being guided in recesses in the housing which allow a movement of each gripper transverse to a vertical axis of said housing and cooperating with an electromagnet. The magnetic field axis of which coincides with the vertical axis (H) of the housing (3) and which moves the grippers (5, . . . ) back and forward between two limit stops (a, b) depending on the polarity of the electromagnet (16). The housing (3) is encompassed with play by a holder (10), wherein elements (13, . . . ) of an elastic material are provided between the holder (10) and the housing (3), namely in the part (9) of the housing (3) that is encompassed by the holder (10). The grippers (5, . . . ) respectively contain two limbs (5a, 5b, . . . ), one of which (5a, . . . ) extends downward perpendicular to the first limb (5b, . . . ) and encompasses the edge of the central opening (15) of the substrate (14) with its end.

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