| |
 |
|
Class Information
Number: 33/366.13
Name: Geometrical instruments > Indicator of direction of force traversing natural media > Level or plumb, terrestrial gravitation responsive > Electrically actuated signal or indicator > With compensation of sensed quantity (e.g., acceleration)
Description: Subject matter combined with an arrangement (1) for sensing an undesirable physical quantity which would otherwise produce an error in the electrical signal or indicator, and (2) for modifying an electrical angle or level signal so as to nullify variation in the electrical signal and indicator caused by the sensed quantity.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7225553 |
Gradiometer mounting and isolation system |
Jun. 5, 2007 |
| 7137208 |
Leveling device |
Nov. 21, 2006 |
| 7093370 |
Multi-gimbaled borehole navigation system |
Aug. 22, 2006 |
| 6895678 |
Borehole navigation system |
May. 24, 2005 |
| 6722049 |
Inclination measurement apparatus |
Apr. 20, 2004 |
| 5659137 |
Decelerometer |
Aug. 19, 1997 |
| 5613571 |
Rotational speed/tip sensor |
Mar. 25, 1997 |
| 5581034 |
Convective accelerometer and inclinometer |
Dec. 3, 1996 |
| 5511320 |
Angle measurement device employing angle sensor and electronics with lead circuitry integrally formed on a printed circuit board |
Apr. 30, 1996 |
| 5440923 |
Drivable slope-sensitive unit for measuring curvature and crossfall of ground surfaces |
Aug. 15, 1995 |
| 5279040 |
Fluid-based acceleration and tilt sensor |
Jan. 18, 1994 |
| 5170567 |
Electronic inclinometer |
Dec. 15, 1992 |
| 5111039 |
Photoelectric vertical sensor with pressure compensation means |
May. 5, 1992 |
| 5029473 |
Acceleration sensor |
Jul. 9, 1991 |
| 4878297 |
Hydrostatic level and elevation measuring device |
Nov. 7, 1989 |
| 4694584 |
Reduced volume digital inclinometer |
Sep. 22, 1987 |
| 4627172 |
Inclinometer having two degrees of freedom |
Dec. 9, 1986 |
| 4531300 |
Electronic inclination gauge with acceleration compensation |
Jul. 30, 1985 |
| 3992951 |
Compensated toroidal accelerometer |
Nov. 23, 1976 |
|
|
|
