Altitude correcting vacuum system

Details Altitude correcting vacuum system Altitude correcting vacuum system

1978-10-04

1981-04-28

Eddleman, Alfred H.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the record

226 95, 242182, 318 6, 360 90, 360 73, G11B 1558, G11B 1546

Patent

active

042649366

ABSTRACT:
A blower motor providing vacuum as, for example, for a magnetic tape handler, is programmed to provide a constant vacuum in an environment of changing altitudes. The blower motor is controlled by a pressure transducer which speeds up the motor as the altitude is increased and slows down the motor as the altitude is decreased.

REFERENCES:
patent: 3156109 (1964-11-01), Fieldgate
patent: 3948463 (1976-04-01), Godbout
patent: 3961441 (1975-10-01), Jones
patent: 4019694 (1977-04-01), Fare et al.

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