Patent · US Expired

Magnetic scanning device for an oblique-track tape deck

US4984116A · kind A · utility

1Cited by

6References

6Claims

0Family size

Assignee

BTS Broadcast Television Systems GmbH · DE

Inventors

Manfred Hescher · Weiterstadt, DE
Theo Wolf · Roßdorf, DE

Key dates

Filing date	Oct 13, 1988
Grant date	Jan 8, 1991
Priority date	—
Expiry date	Oct 13, 2008

Classification

Technology area (CPC G)Physics
CPC primaryG11B5/53
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

To assure production of compatible magnetic tracks on magnetic tape, the head wheels of oblique-track tape decks must be height-adjustable. In conventional devices, adjustment of the head wheel height alters the pre-tensioning of the head wheel bearings or the length of the tape loop around the playback device must be chosen unnecessarily large. In the playback device of the present invention, the head wheel motor and head wheel form a unit which is axially shiftable. The pre-tensioning of the bearings is accomplished using a spring device which is supported against an element which rotates with the head wheel axle.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.