Air guide for tape transports

Details Air guide for tape transports Air guide for tape transports

1974-11-07

1976-09-07

Knowles, Allen N.

Advancing material of indeterminate length

By fluid current

And web storage

226196, B65H 1732

Patent

active

039790371

ABSTRACT:
An apparatus for guiding a span of high speed magnetic tape past the recording/transducing head which utilizes a low volume lubricating air film to virtually eliminate the sliding friction between the guide itself and the magnetic tape. The periphery of the guide is slightly concave to permit the formation of an air film while permitting the tape to retain a desirable flat cross section and also facilitating a seal between the edges of the tape and the convex peripheral surface of the guide to isolate the lubricating air film from the atmosphere in order to reduce the supply of compressed air required. The design also enables the utilization of boundary layer air being dragged along by the tape to supplement the compressed air supply to further reduce the volume of air required.

REFERENCES:
patent: 3087664 (1963-04-01), Streeter
patent: 3103850 (1963-09-01), Khoury et al.
patent: 3281040 (1966-10-01), Grant
patent: 3421675 (1969-01-01), Brown et al.
patent: 3469752 (1969-09-01), Amos et al.

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