Magnetic chuck for convergence apparatus

Details Magnetic chuck for convergence apparatus Magnetic chuck for convergence apparatus

2005-04-12

2005-04-12

Donovan, Lincoln (Department: 2832)

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Work or object holding type

C269S008000

Reexamination Certificate

active

06879231

ABSTRACT:
A magnetic chuck (10) for temporarily holding an LCD imager (14) to a convergence device (12) during an alignment or convergence operation. A substrate (16) of the imager (14) is made of a magnetically permeable material. A knob (38) turns an armature assembly (22) such that in an on position10ba second magnetic flux path (46b) is allowed to permeate the substrate16thereby holding the imager (14) to a grip face18of the magnetic chuck (10). When the knob (28) is rotated to shunt flux through a first magnetic flux path (49a) through a pair of steel grip shoes (20), then the imager (14) is released form the grip face (18).

REFERENCES:
patent: 5993365 (1999-11-01), Stagnitto et al.
patent: 6480347 (2002-11-01), Spring

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