Protective system for a pneumatically actuated rotating body

Details Protective system for a pneumatically actuated rotating body Protective system for a pneumatically actuated rotating body

1976-12-23

1979-02-13

Frankfort, Charles E.

Cutlery

188 67, 308 1A, 308DIG1, F16C 3206

Patent

active

041392434

ABSTRACT:
A hollor tubular shaft containing optical elements for a laser-type facsimile transceiver employing helical scanning is horizontally supported by air bearings, and translated along its major axis by means of a piston and pneumatic cylinder coaxial with the shaft. An integral reaction-powered air motor provides shaft rotation, and a fail-safe automatic control and braking system prevents damage to the scanning mechanism in the event of interruption of the pneumatic or electrical supplies by permitting physical shaft-to-bearing contact only in the absence of shaft rotation and translational motion. The apparatus finds particular utility in the production of printing plates for use in the Graphic Arts.

REFERENCES:
patent: 3063041 (1962-11-01), Quade et al.
patent: 3491529 (1970-01-01), Kerr et al.
patent: 3611697 (1971-10-01), Greb

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