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Class Information
Number: 33/391
Name: Geometrical instruments > Indicator of direction of force traversing natural media > Level or plumb, terrestrial gravitation responsive > Pendulum
Description: Device wherein the responsive portion is a body, so supported as to be free to swing to a position wherein (1) its center of gravity, or (2) its center of buoyancy, is utilized to determine the vertical.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7430809 |
Inclination sensor |
Oct. 7, 2008 |
| 7395605 |
Apparatus and method for measuring and controlling pendulum motion |
Jul. 8, 2008 |
| 7392593 |
Angle meter and spirit level |
Jul. 1, 2008 |
| 7383637 |
Inclination sensor and method of attaching the same |
Jun. 10, 2008 |
| 7353615 |
Anti-vibration tilt detector |
Apr. 8, 2008 |
| 7325322 |
Electric park brake inclinometer |
Feb. 5, 2008 |
| 7318283 |
Inclination sensor |
Jan. 15, 2008 |
| 7305771 |
Rotation sensor |
Dec. 11, 2007 |
| 7178377 |
Inclination sensor |
Feb. 20, 2007 |
| 7137209 |
Level and protractor |
Nov. 21, 2006 |
| 7121012 |
Apparatus and method for measuring and controlling pendulum motion |
Oct. 17, 2006 |
| 7073269 |
Self-leveling laser alignment tool and method thereof |
Jul. 11, 2006 |
| 6966154 |
Earthquake protection consisting of vibration-isolated mounting of buildings and objects using virtual pendulums with long cycles |
Nov. 22, 2005 |
| 6941666 |
Forklift mast position indicator |
Sep. 13, 2005 |
| 6935035 |
Slopemaster |
Aug. 30, 2005 |
| 6877240 |
Apparatus for indicating correct or faulty back posture |
Apr. 12, 2005 |
| 6874240 |
Angle measuring and level combination device |
Apr. 5, 2005 |
| 6848188 |
Laser alignment device providing multiple references |
Feb. 1, 2005 |
| 6826844 |
Downsized sensor unit with increased accuracy |
Dec. 7, 2004 |
| 6779276 |
Level system |
Aug. 24, 2004 |
| 6763599 |
Plumb bob apparatus |
Jul. 20, 2004 |
| 6722049 |
Inclination measurement apparatus |
Apr. 20, 2004 |
| 6694631 |
Alignment device utilizing components responsive to gravity |
Feb. 24, 2004 |
| 6664534 |
Tilt sensing device and method for its operation |
Dec. 16, 2003 |
| 6651355 |
Range finder for bow hunter |
Nov. 25, 2003 |
| 6625895 |
Servo-controlled automatic level and plumb tool |
Sep. 30, 2003 |
| 6594912 |
Electronic plumb indicator for monopoles, survey poles, global positioning antennas and the like |
Jul. 22, 2003 |
| 6546639 |
Inclination measurement apparatus |
Apr. 15, 2003 |
| 6543147 |
Tilt detector |
Apr. 8, 2003 |
| 6499220 |
Inclination sensor |
Dec. 31, 2002 |
| 6470580 |
Tilt sensor |
Oct. 29, 2002 |
| 6453574 |
Method for aligning a cassette pod to an overhead hoist transport system |
Sep. 24, 2002 |
| 6439543 |
Leveling device |
Aug. 27, 2002 |
| 6351890 |
Laser light referencing tool |
Mar. 5, 2002 |
| 6279243 |
Apparatus for indicating correct or faulty back posture |
Aug. 28, 2001 |
| 6219926 |
Ruler for measuring and marking lengths and angles relative to a horizontal plane utilizing gravity |
Apr. 24, 2001 |
| 6073356 |
Inclinometer |
Jun. 13, 2000 |
| 6032376 |
Pendulum line level |
Mar. 7, 2000 |
| 5992029 |
Automatic laser plumb line |
Nov. 30, 1999 |
| 5977922 |
Satellite antenna alignment device |
Nov. 2, 1999 |
| 5956855 |
Ladder inclination indicator |
Sep. 28, 1999 |
| 5955713 |
Tilt switch array for electronic orientation detection |
Sep. 21, 1999 |
| 5956260 |
Electronic level displaying inclination having digital and analog displays |
Sep. 21, 1999 |
| 5937371 |
Inclinometer with dual scales and parallel gauging surfaces |
Aug. 10, 1999 |
| 5822870 |
Level controller |
Oct. 20, 1998 |
| 5792015 |
Putting aid |
Aug. 11, 1998 |
| 5765290 |
Adaptable tip sensor |
Jun. 16, 1998 |
| 5752322 |
Gimballed ouroboros compass device with digital logic |
May. 19, 1998 |
| 5752320 |
Borehole dip instrument |
May. 19, 1998 |
| 5740881 |
Safety device for detecting improper positioning of a ladder |
Apr. 21, 1998 |
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