Vacuum control system for magnetic tape handler

Details Vacuum control system for magnetic tape handler Vacuum control system for magnetic tape handler

1978-08-14

1980-02-12

Christian, Leonard D.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

G11B 1558, G11B 2312

Patent

active

041879970

ABSTRACT:
The vacuum for controlling tape loop tension in a magnetic tape handler is supplied by a low speed multiple stage vacuum blower and controlled by a low power solenoid and a flapper valve operated between two predetermined positions. In order to provide fast operation of the flapper valve in response to the low power solenoid a fast acting fluid amplifier is utilized between the solenoid and the flapper valve. The elimination of belts, gears and high speed blowers results in an unusually quiet system.

REFERENCES:
patent: 3329364 (1967-07-01), Brettell
patent: 3343758 (1967-09-01), Hemdal
patent: 3507432 (1970-04-01), Fecher et al.

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