Gas discharge laser with roller bearings and stable magnetic axi

Details Gas discharge laser with roller bearings and stable magnetic axi Gas discharge laser with roller bearings and stable magnetic axi

1999-04-13

2000-02-15

Scott, Jr., Leon

Coherent light generators

Having an applied magnetic field

372 57, 372 61, 372 65, H01S 300

Patent

active

06026103&

ABSTRACT:
An electric discharge gas laser having a laser cavity in which is contained a laser gas and a fan for circulating the laser gas. The fan is supported in position radially by a roller bearing system and axially at least in part by magnetic forces. In a preferred embodiment the magnetic forces are supplied by a brushless DC motor in which the rotor of the motor is sealed within the gas environment of the laser cavity and the motor stator is located outside the gas environment. The magnetic center of the rotor is offset from the center of the stator to produce a magnetic reluctance generated force on the shaft that acts axially on the shaft toward the non-drive end and is reacted by a ball and plate bearing assembly mounted along the axis of rotation at the opposite end of the shaft.

REFERENCES:
patent: 5023884 (1991-06-01), Akins et al.
patent: 5848089 (1998-12-01), Sarkar et al.

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