Electronic level with stereo sound indication

Details Electronic level with stereo sound indication Electronic level with stereo sound indication

1994-08-12

1996-02-06

Cuchlinski, Jr., William A.

Geometrical instruments

Indicator of direction of force traversing natural media

Level or plumb, terrestrial gravitation responsive

340689, G01C 906

Patent

active

054887798

ABSTRACT:
An electronic level includes two loudspeakers, one located at each end of the level housing (beam) and controlled in a stereo-like manner. Thus the volume balance between the two loudspeakers is controlled by the angular inclination of the level. The user hears the volume difference between the two loudspeakers and thus has an auditory cue in which direction to rotate the level to achieve exact level or plumb. The loudspeakers are located at the extreme ends of the level housing to achieve maximum stereo separation. The separation reinforces the user's natural binaural hearing capability in order to distinguish which loudspeaker is turned on or off. The loudspeakers are turned on or off so that at level or plumb both loudspeakers are on. For an out of level conditions one loudspeaker is on and the other is off; the end of the level which is high when out of level has its loudspeaker on, and the other loudspeaker is off.

REFERENCES:
patent: 2754497 (1956-07-01), Wolpert
patent: 3204233 (1965-08-01), Olliff
patent: 3861052 (1975-01-01), Siegfried
patent: 4349809 (1982-09-01), Tomes
patent: 4484393 (1984-11-01), LaFreniere
patent: 4697174 (1987-09-01), Viator, Sr.
patent: 4912662 (1990-03-01), Butler et al.
patent: 5083383 (1992-01-01), Heger
patent: 5259118 (1993-11-01), Heger
patent: 5313713 (1994-05-01), Heger et al.
patent: 5322441 (1994-06-01), Lewis et al.

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