| |
 |
|
Class Information
Number: 33/377
Name: Geometrical instruments > Indicator of direction of force traversing natural media > Level or plumb, terrestrial gravitation responsive > Liquid type, upper surface utilizing
Description: Device including a body of liquid having an upper surface indicative of terrestrial gravitational direction, this upper surface either serving to indicate or to control an indicator.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7299557 |
Tilt sensor |
Nov. 27, 2007 |
| 7243435 |
Level device and method of calibrating a level vial |
Jul. 17, 2007 |
| 6990742 |
Wave level |
Jan. 31, 2006 |
| 6912793 |
Vial and method of making same |
Jul. 5, 2005 |
| 6779276 |
Level system |
Aug. 24, 2004 |
| 6735880 |
Vial and method of making same |
May. 18, 2004 |
| 6655036 |
Aid apparatus for level surveying instrument |
Dec. 2, 2003 |
| 6148530 |
Level with snap action vial holder |
Nov. 21, 2000 |
| 6073356 |
Inclinometer |
Jun. 13, 2000 |
| 6073354 |
Plumb laser beam generator with floating telescope |
Jun. 13, 2000 |
| 6057916 |
Automatic inclination corrector and inclination sensor using an automatic inclination corrector |
May. 2, 2000 |
| 6026581 |
Pocket level with optional magnet |
Feb. 22, 2000 |
| 5794355 |
Rotationally actuated position sensor |
Aug. 18, 1998 |
| 5749152 |
Spirit level vial construction |
May. 12, 1998 |
| 5731761 |
Inclination sensor |
Mar. 24, 1998 |
| 5709034 |
Spirit level |
Jan. 20, 1998 |
| 5669258 |
Tube bender angle indicator |
Sep. 23, 1997 |
| 5651186 |
Liquid level vial and method for making the vial |
Jul. 29, 1997 |
| 5513001 |
Tilt angle automatic compensator in all directions |
Apr. 30, 1996 |
| 5476258 |
Golf ball position marker with slope indicator |
Dec. 19, 1995 |
| 5463817 |
Picture frame leveling device |
Nov. 7, 1995 |
| 5444382 |
Position and orientation locator/monitor |
Aug. 22, 1995 |
| 5425179 |
Optical sensor for measuring inclination angles |
Jun. 20, 1995 |
| 5416977 |
Pitch sensor system |
May. 23, 1995 |
| 5392112 |
Inclination angle metering apparatus |
Feb. 21, 1995 |
| 5381604 |
Angle measurement device employing angle sensor and electronics integrally formed on a printed circuit board |
Jan. 17, 1995 |
| 5371951 |
Two-axis inclinometer |
Dec. 13, 1994 |
| 5279040 |
Fluid-based acceleration and tilt sensor |
Jan. 18, 1994 |
| 5269066 |
Carpenters level and square |
Dec. 14, 1993 |
| 5233984 |
Implantable multi-axis position and activity sensor |
Aug. 10, 1993 |
| 5172481 |
Electronic inclinometer |
Dec. 22, 1992 |
| 5170567 |
Electronic inclinometer |
Dec. 15, 1992 |
| 5131156 |
Leveling apparatus and method |
Jul. 21, 1992 |
| 5090128 |
Device for measuring or controlling change of level between several points |
Feb. 25, 1992 |
| 5083383 |
Electronic capacitance level with automatic electrode selection |
Jan. 28, 1992 |
| 5007176 |
Simply-constructed instrument for measuring horizontal line, vertical line and angles |
Apr. 16, 1991 |
| 4993162 |
Apparatus for measuring inclinations of a component |
Feb. 19, 1991 |
| 4972596 |
Trailer measuring system |
Nov. 27, 1990 |
| 4943158 |
Sensor controlled leveling device |
Jul. 24, 1990 |
| 4937518 |
Electrical inclination sensor and a monitoring circuit for the sensor |
Jun. 26, 1990 |
| 4932133 |
Post-avalanche aid device |
Jun. 12, 1990 |
| 4912662 |
Inclinometer |
Mar. 27, 1990 |
| 4902129 |
Orientation indicator for a flexible fiberscope or endoscope including method of manufacture |
Feb. 20, 1990 |
| 4854047 |
Inclinometer of liquid in thin graduated cylinder |
Aug. 8, 1989 |
| 4785543 |
Sighting device for a ballistic projectile apparatus |
Nov. 22, 1988 |
| 4785541 |
Bow mounted range finder for tree stands |
Nov. 22, 1988 |
| 4745687 |
Level indication device and method for providing a level indication of up to three degrees accuracy |
May. 24, 1988 |
| 4676103 |
Acceleration or inclination sensors |
Jun. 30, 1987 |
| 4666299 |
Inclination measuring apparatus having a prism with associated liquid container |
May. 19, 1987 |
| 4641434 |
Inclination measuring device |
Feb. 10, 1987 |
|
|
|
