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Browse Prior Art Database

Sound Deadening in a Magnetic Tape Unit

IP.com Disclosure Number: IPCOM000078356D
Original Publication Date: 1972-Dec-01
Included in the Prior Art Database: 2005-Feb-25
Document File: 2 page(s) / 76K

Publishing Venue

IBM

Related People

Prahl, ME: AUTHOR

Abstract

The cabinet walls of this magnetic tape unit are constructed to deaden the sound normally associated With the unit.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 70% of the total text.

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Sound Deadening in a Magnetic Tape Unit

The cabinet walls of this magnetic tape unit are constructed to deaden the sound normally associated With the unit.

Fig. 1 shows a front and left-side view of the tape unit, with front door 1 ajar to show vacuum column area 2. The top of the unit includes open grill 3 to facilitate upward flow of cooling air. The left side of the unit is covered by a decorative panel. An underlying inner panel is spaced from the decorative panel to provide a dead-air space. The inner surface of the inner panel is covered with a layer of sound deadening material.

Fig. 2 shows the back and right-side of the tape unit, with back door 4 ajar. The lower portion of the tape unit includes motor, 5 which is belt-connected to air pressure pump 6 and to vacuum blower 7. The inner surface of door 4 is lined with a layer of sound deadening material.

The right-side of the tape unit's frame is sectionalized and circuit board 8 is mounted to close the inside face of the frame section. This circuit board contains the servo electronics for energizing reel motors 9 and 10. The outlet of blower 7 is connected via flexible conduit 11 to air inlet opening 12 at the bottom of this frame section. The upper wall of this frame section includes outlet opening 13.

The right side of the unit is also covered by a decorative panel. An underlying inner panel is spaced from this decorative panel to provide a dead-air space. The inner surface of the inner panel is covered...