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Class Information
Number: 33/308
Name: Geometrical instruments > Indicator of direction of force traversing natural media > Borehole direction or inclination > Pendulum mounted or directed marker
Description: Device including a pendulum for determining inclination and further including means for marking a surface to give a permanent record of the inclination, and wherein said marking means is carried by or guided by the pendulum.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7287337 |
Pitch sensing in drilling machines |
Oct. 30, 2007 |
| 6941666 |
Forklift mast position indicator |
Sep. 13, 2005 |
| 6659196 |
Core orientation |
Dec. 9, 2003 |
| 6334260 |
Strata movement indicators |
Jan. 1, 2002 |
| 6289596 |
Downhole tool |
Sep. 18, 2001 |
| 5937371 |
Inclinometer with dual scales and parallel gauging surfaces |
Aug. 10, 1999 |
| 5799405 |
Vertical alignment tool for underground installation |
Sep. 1, 1998 |
| 5752320 |
Borehole dip instrument |
May. 19, 1998 |
| 5345685 |
Strata movement indicator |
Sep. 13, 1994 |
| 5314030 |
System for continuously guided drilling |
May. 24, 1994 |
| 4578871 |
Inclinometer |
Apr. 1, 1986 |
| 4570353 |
Magnetic single shot inclinometer |
Feb. 18, 1986 |
| 4462094 |
Method and apparatus for determining angle of inclination of seismometer and leveling seismic motion detectors |
Jul. 24, 1984 |
| 4457077 |
Borehole gradiometer |
Jul. 3, 1984 |
| 4311201 |
Core sample orientation tool |
Jan. 19, 1982 |
| 4224573 |
Electric circuit device and pendulum unit incorporating such devices |
Sep. 23, 1980 |
| 3964171 |
Device for steplessly detecting the ovalizations and the projections on two orthogonal planes of the curved geometrical configuration of a submerged pipeline |
Jun. 22, 1976 |
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