Automatic self-leveling instrument mount

Details Automatic self-leveling instrument mount Automatic self-leveling instrument mount

1981-01-21

1983-02-01

Little, Willis

Geometrical instruments

Straight-line light ray type

Level

33366, 33402, 73483, 73505, G01C 502

Patent

active

043708137

ABSTRACT:
A self-leveling instrument mount comprises an instrument table pivotally mounted above a stationary frame on first, second and third vertical support arms. The first support arm is a fixed length member connected to the frame through a ball and socket joint. The second and third support arms are formed of screws extending between the table and frame having effective lengths that are controlled, respectively, by first and second servo motors in response to a pendulum switch to maintain the table parallel to a horizontal reference plane. The pendulum is magnetically damped during operation of the servo motors for stabilization. A mercury switch on the table disables the servo motors when the tilt of the table is too large to be leveled by the support screws.

REFERENCES:
patent: 3486238 (1969-12-01), Hansen
patent: 3537307 (1970-11-01), Pliha
patent: 3962693 (1976-06-01), Schamblin
patent: 3983636 (1976-10-01), Fashbaugh et al.
patent: 3985033 (1976-10-01), Ford
patent: 4024823 (1977-05-01), Ward et al.
patent: 4035084 (1977-07-01), Ramsay

Affiliated with

Also associated with

Rating

Automatic self-leveling instrument mount does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic self-leveling instrument mount, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic self-leveling instrument mount will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2404292