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Class Information
Number: 33/366.11
Name: Geometrical instruments > Indicator of direction of force traversing natural media > Level or plumb, terrestrial gravitation responsive > Electrically actuated signal or indicator
Description: Subject matter including means producing a humanly perceptive signal to a flow of electron, an element responsive to terrestrial gravitation, and wherein the terrestrial gravitation responsive element controls the humanly perceptive signal.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6351892 |
Orientation sensor utilizing intra-pattern property measurements |
Mar. 5, 2002 |
| 6301795 |
Tilt sensor using magnet and magnetic sensor |
Oct. 16, 2001 |
| 6281456 |
Three-axis gravity switch |
Aug. 28, 2001 |
| 6247239 |
Clinometric sensor |
Jun. 19, 2001 |
| 6236001 |
Scoop with weigh scale |
May. 22, 2001 |
| 6204498 |
Inclination sensor and surveying instrument using the same |
Mar. 20, 2001 |
| 6137065 |
Level weighing device |
Oct. 24, 2000 |
| 6073355 |
Method for inclination measurement using piezoelectric effect |
Jun. 13, 2000 |
| 5992032 |
Method and apparatus for inclination measurement using piezoelectric effect |
Nov. 30, 1999 |
| 5955713 |
Tilt switch array for electronic orientation detection |
Sep. 21, 1999 |
| 5930907 |
Uniaxial horizontal sensor |
Aug. 3, 1999 |
| 5901453 |
Gradiometer |
May. 11, 1999 |
| 5875560 |
Method and apparatus for aligning surfaces in close proximity |
Mar. 2, 1999 |
| 5852878 |
Electrolytic tilt sensing device |
Dec. 29, 1998 |
| 5841353 |
Relating to the determination of verticality in tall buildings and other structures |
Nov. 24, 1998 |
| 5780848 |
System and method for indicating an angular position of an object using a level detection device |
Jul. 14, 1998 |
| 5740881 |
Safety device for detecting improper positioning of a ladder |
Apr. 21, 1998 |
| 5731761 |
Inclination sensor |
Mar. 24, 1998 |
| 5669147 |
Tilt sensor |
Sep. 23, 1997 |
| 5630280 |
Dual axis electrolytic tilt sensor |
May. 20, 1997 |
| 5612687 |
Process for regulating the orientation of a support structure such as that carrying a head-up control system on an aircraft |
Mar. 18, 1997 |
| 5594669 |
Electronic fence post level |
Jan. 14, 1997 |
| 5204568 |
Superconducting bearing for borehole and survey gravimeters |
Apr. 20, 1993 |
| 5134780 |
Inclinometer with rail having a hollow I-shaped cross-section |
Aug. 4, 1992 |
| 4852266 |
Angle measuring adapter |
Aug. 1, 1989 |
| 4797033 |
Anchor line-stabilized system |
Jan. 10, 1989 |
| 4628729 |
Arrangement for determining the instantaneous angular position of a moving object |
Dec. 16, 1986 |
| 4554535 |
Method and apparatus for obtaining electrical signals correlated with the position of a mass of mercury in instruments and the like |
Nov. 19, 1985 |
| 4551921 |
Apparatus for measuring the gradient or inclination of a surface or of a line |
Nov. 12, 1985 |
| 4535541 |
Device for measuring guide alignment for mine shafts and the like |
Aug. 20, 1985 |
| 4517750 |
Vertical indicating method and device |
May. 21, 1985 |
| 4452078 |
Device for checking the depth reached by a digging operation |
Jun. 5, 1984 |
| 4434558 |
Surface profile measuring apparatus and method |
Mar. 6, 1984 |
| 4284987 |
Slope stability warning device for articulated tractors |
Aug. 18, 1981 |
| 4231163 |
Level indicating and elevation indicating device |
Nov. 4, 1980 |
| 4110609 |
Tilt limiting detecting apparatus |
Aug. 29, 1978 |
| 4091542 |
Measuring apparatus for determining the position of the roller apron of a continuous casting installation |
May. 30, 1978 |
| 4085375 |
Combined angular displacement measuring system and multiplier |
Apr. 18, 1978 |
| 4060910 |
Orientation system |
Dec. 6, 1977 |
| 4057661 |
Method of manufacturing a thin-film electrode |
Nov. 8, 1977 |
| 4024823 |
Automatic blade angle controller system |
May. 24, 1977 |
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