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Class Information
Number: 33/366.24
Name: Geometrical instruments > Indicator of direction of force traversing natural media > Level or plumb, terrestrial gravitation responsive > Electrically actuated signal or indicator > Having pendulum sensor
Description: Subject matter wherein the element executes gravity responsive motion about an axis and is supported so as to be free to swing to a position wherein (1) its center of gravity, or (2) its center of bouyancy is utilized to determine the vertical.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4422243 |
Dual axis capacitive inclination sensor |
Dec. 27, 1983 |
| 4401888 |
Automatic sensing device for off-horizontal and off-vertical detection |
Aug. 30, 1983 |
| 4375727 |
Cant angle sensor assembly |
Mar. 8, 1983 |
| 4370813 |
Automatic self-leveling instrument mount |
Feb. 1, 1983 |
| 4283798 |
Attitude indicator for divers |
Aug. 18, 1981 |
| 4274494 |
Method and device for setting the direction and/or the inclination of an elongated rock drilling apparatus |
Jun. 23, 1981 |
| 4265027 |
Automatic self-leveling instrument mount |
May. 5, 1981 |
| 4224573 |
Electric circuit device and pendulum unit incorporating such devices |
Sep. 23, 1980 |
| 4219940 |
Angular accelerometer stabilized pendulum |
Sep. 2, 1980 |
| 4214238 |
Seismic trigger |
Jul. 22, 1980 |
| 4196524 |
Head movement indicating device |
Apr. 8, 1980 |
| 4163325 |
Verticality sensors |
Aug. 7, 1979 |
| 4138824 |
Center locator |
Feb. 13, 1979 |
| 4132004 |
Remote fixture aiming device |
Jan. 2, 1979 |
| 4099334 |
Dip angle data transmitter |
Jul. 11, 1978 |
| 4094073 |
Angle detector |
Jun. 13, 1978 |
| 4077132 |
Digital level indicator |
Mar. 7, 1978 |
| 4069591 |
Elastomeric inclinometer |
Jan. 24, 1978 |
| 4027399 |
Positional sensing |
Jun. 7, 1977 |
| 3997976 |
Sensitive tiltmeter |
Dec. 21, 1976 |
| 3962693 |
Motion detection device including a pendulum switch |
Jun. 8, 1976 |
| 3938258 |
Vertical reference device |
Feb. 17, 1976 |
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