Electronic level apparatus and method

United States of America Patent

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Jun 12, 1990
Grant Date
N/A
app pub date
Mar 1, 1989
filing date
Mar 1, 1989

priority date (Note)
Expired

status (Latency Note)

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Abstract

This invention relates to an electronic level apparatus wherein a hollow torus is rotatably mounted in the level. A body of ferromagnetic fluid creates a horizontal reference and is sensed to provide an audible signal when a predetermined angular orientation is detected by the sensor.

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Patent Owner(s)

Patent Owner	Address
TECHNICAL RESEARCH ASSOCIATES INC	2257 SOUTH 1100 EAST SALT LAKE CITY UT 84106

International Classification(s)

G01C:MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING....

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Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Baker, Charles D	Sandy, UT	22	972
Brimhall, Owen D	West Valley City, UT	45	2132
Messinger, James E	Salt Lake City, UT	8	580

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Electronic level apparatus and method

Number of patents in Portfolio can not be more than 2000

United States of America Patent

07317444

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PATENT NO	4932132
SERIAL NO	07317444
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07317444

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