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Class Information
Number: 33/283
Name: Geometrical instruments > Straight-line light ray type > Vertical angle > Having gravity responsive indicating means (e.g., pendulum, etc.)
Description: Device wherein the magnitude of the angle is measured by means of a gravity actuated or pendulous indicating means.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7454839 |
Portable reference laser unit and attachment accessory |
Nov. 25, 2008 |
| 7266897 |
Self-aligning, self plumbing baseline instrument |
Sep. 11, 2007 |
| 6996910 |
Laser leveling device for generating parallel lines |
Feb. 14, 2006 |
| 6931739 |
Multidirectional laser indicator |
Aug. 23, 2005 |
| 6829834 |
Multi-angle self-leveling line generation |
Dec. 14, 2004 |
| 6810595 |
Laser angle guide assembly for computed tomography and method for the same |
Nov. 2, 2004 |
| 6792685 |
Stabilized laser plumb |
Sep. 21, 2004 |
| 6782034 |
Laser plumbing and leveling instrument which adjusting height of horizontal line |
Aug. 24, 2004 |
| 6754969 |
Self-leveling constructional laser |
Jun. 29, 2004 |
| 6742269 |
Verticality/horizon indicator for construction |
Jun. 1, 2004 |
| 6694630 |
Multiple-axis laser emitter with optical beam splitter |
Feb. 24, 2004 |
| 6688009 |
Laser survey instrument |
Feb. 10, 2004 |
| 6651355 |
Range finder for bow hunter |
Nov. 25, 2003 |
| 6640453 |
Clinometer |
Nov. 4, 2003 |
| 6625895 |
Servo-controlled automatic level and plumb tool |
Sep. 30, 2003 |
| 6604291 |
Self-leveling device |
Aug. 12, 2003 |
| 6568094 |
Compact optical calibrating apparatus for multiple orientations |
May. 27, 2003 |
| 6536122 |
Laser line beam emitting apparatus having functions of laser marking or plumb instrument, or leveler |
Mar. 25, 2003 |
| 6101728 |
Versatile VH laser plumb |
Aug. 15, 2000 |
| 6035540 |
Automatic optical levelling, plumbing, and verticality-determining apparatus |
Mar. 14, 2000 |
| 5992029 |
Automatic laser plumb line |
Nov. 30, 1999 |
| 5839199 |
Laser gradient setting device |
Nov. 24, 1998 |
| 5790248 |
Laser beam levelling device |
Aug. 4, 1998 |
| 5782002 |
Laser guidance means |
Jul. 21, 1998 |
| 5680208 |
Gravity oriented laser scanner |
Oct. 21, 1997 |
| 5606802 |
Laser gradient setting device |
Mar. 4, 1997 |
| 5594994 |
Tree stand rangefinder and method of using the same |
Jan. 21, 1997 |
| 5572796 |
Laser beam pendular level |
Nov. 12, 1996 |
| 5539990 |
Three-dimensional optical levelling, plumbing and angle-calibrating instrument |
Jul. 30, 1996 |
| 5531031 |
Laser level and square |
Jul. 2, 1996 |
| 5467531 |
Tree stand rangefinder and method of using the same |
Nov. 21, 1995 |
| 5450675 |
Method and apparatus for vertically aligning a structure |
Sep. 19, 1995 |
| 5446968 |
Strut height adjusting apparatus |
Sep. 5, 1995 |
| 5163229 |
Plumb and horizontal locating device |
Nov. 17, 1992 |
| 5112126 |
Apparatuses and methods for making geophysical measurements useful in determining the deflection of the vertical |
May. 12, 1992 |
| 5029251 |
Transducer for measuring angles of inclination, angular positions and other positions, and apparatus comprising such transducer |
Jul. 2, 1991 |
| 5026157 |
Magnetic motion damping system for pendulous compensator |
Jun. 25, 1991 |
| 4988193 |
Method and apparatus for measuring incident light angle relative to level |
Jan. 29, 1991 |
| 4938589 |
Sensor with integrated signal processing for one- to three-dimensional positioning |
Jul. 3, 1990 |
| 4738532 |
Method of calibrating an optical measuring system |
Apr. 19, 1988 |
| 4650324 |
Level Transit |
Mar. 17, 1987 |
| 4576478 |
Optical instrument for measuring angles |
Mar. 18, 1986 |
| 4468960 |
Glide path indicator for aircraft |
Sep. 4, 1984 |
| 4368581 |
Bow sight |
Jan. 18, 1983 |
| 4343090 |
Suspension device for angle indicator |
Aug. 10, 1982 |
| 4333243 |
Latitude finder |
Jun. 8, 1982 |
| 4260151 |
Golf green slope indicating device |
Apr. 7, 1981 |
| 4258475 |
Golfer's sighting device |
Mar. 31, 1981 |
| 4214372 |
Aiming instrument |
Jul. 29, 1980 |
| 4136955 |
Apparatus for correcting theodolites |
Jan. 30, 1979 |
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