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US 4,501,396 AGranted
Video cassette time left gauge
AssigneeMinnesota Mining and Manufacturing Company
InventorsJohn P. Tomsyck, Thomas J. Zohn
Life of this patent
Estimating the term…
Abstract
A time-remaining gauge for use with video cassettes is provided, wherein the gauge includes a substrate having a pressure sensitive adhesive on one side and various indicia on the other side which may be aligned with the radius of tape on a supply or take-up spool on the cassette and viewed through a window in the cassette on which the gauge is affixed.
Claims3
A time-remaining gauge adapted to be affixed to a window covering a spool within a video cassette on which a magnetic recording tape may be wound, comprising
- a sheet-like substrate having on one side thereof a layer of pressure sensitive adhesive for securing said gauge to said window and having indicia including a plurality of marks positioned to correspond to different radii on said spool and legends associated therewith identifying predetermined running speeds and the time remaining at a given speed at said diameters on said spool, whereby a user may affix the gauge to the cassette window and visually align the outer radius of the tape on the spool with said marks to accurately determine the amount of running time remaining until the end of the tape is reached.
Dependencies are inferred from the claim text.