| Patents for G01C 9 - Measuring inclination, e.g. by clinometers, by levels (8,378) |
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| 10/22/1991 | US5058407 Level for use in bending conduit |
| 10/22/1991 | US5058283 Car seat level indicator |
| 10/22/1991 | CA1290936C Handhole protector device for a hollow extrusion |
| 10/17/1991 | WO1991015734A1 Flexible level |
| 10/17/1991 | DE4011560A1 Combined altitude, inclination and distance meter for vehicle - has conventional distance meter, pendulum used for inclination measurement, computer and display |
| 10/16/1991 | EP0451446A1 Device for detecting the driving of a slope |
| 10/16/1991 | CN2086888U Level band tap |
| 10/16/1991 | CN2086887U Universal-purpose corrector |
| 10/16/1991 | CN2086885U Tester for angle of pit prop to hillside |
| 10/08/1991 | US5055980 Automobile headlamp |
| 10/02/1991 | DE4009943A1 Computer-controlled slope monitoring system - useful for monitoring foundations, machine parts, in radioactive regions |
| 09/25/1991 | EP0447810A2 Measuring device for filling level or other mechanical properties of electrically conductive liquid |
| 09/12/1991 | DE4040332A1 Liquid electrolytic conductivity measurement - has multiplexer which selects precision resistances for measurement of alternating current between stray field measurement electrodes |
| 09/12/1991 | DE4036262A1 Electrical measuring appts. for level of conductive liq. - uses measuring sensor and evaluating circuit for continuous measurement of level in container or other mechanical data |
| 09/11/1991 | CN2084605U Simple high latitude instrument |
| 09/10/1991 | US5046261 Leveling device for leveling tools and workpieces |
| 09/05/1991 | WO1991013320A1 Plumb indicator |
| 09/05/1991 | DE4013507A1 Liq. container esp. for spirit lever - has phototransmitter and photoreceiver producing signal evaluated to determine container position w.r.t. vertical or horizontal |
| 09/03/1991 | US5044087 Line level apparatus |
| 08/29/1991 | DE4005740A1 Horizontal inclinometer for monitoring ground shifts - has changeover liq. switch in lines from end containers to differential pressure transducer |
| 08/27/1991 | US5042505 Electronic angular position and range of motion measuring device and method |
| 08/27/1991 | US5042158 Inclination sensor |
| 08/22/1991 | WO1991012497A1 Crystal-oriented motion sensor and process for manufacturing it |
| 08/22/1991 | WO1991012492A1 Attachable type protractor for measuring perpendicularity and horizontal level |
| 08/20/1991 | US5040418 Acceleration sensor |
| 08/14/1991 | CN2082850U Portable dip gauge |
| 08/13/1991 | US5038489 Posture measuring instrument |
| 08/13/1991 | CA1287488C Level vial retaining assembly and retainer therefor |
| 08/08/1991 | WO1991011723A1 Device for measuring acceleration and the like |
| 08/08/1991 | WO1991011684A1 Clinometer |
| 08/08/1991 | DE4003473A1 Kristallorientierter bewegungssensor und verfahren zu dessen herstellung Crystal-oriented motion sensor and process for its manufacture |
| 08/07/1991 | CN2082400U Composed highway gradient rulers with multi functions |
| 08/07/1991 | CN1053676A Three-dimensional synchronous interpretation system |
| 08/06/1991 | US5036594 Method and apparatus for gauging the corsslevel and warp of railroad tracks |
| 08/01/1991 | DE4002493A1 Inclination measurer using rotary table - carrying inclinometer and mounted on base plate with motorised rotation and lifting mechanically |
| 07/31/1991 | EP0438490A1 Homopolar inductive displacement sensor. |
| 07/25/1991 | DE4000701A1 Measuring arrangement for vehicle inclination and acceleration - has pointer on base of liq. container with pendulum, eccentric bearing, linear guide and viewing window |
| 07/23/1991 | US5033292 Adapter for facilitating measurements of vehicle drive train components |
| 07/23/1991 | US5033199 Level vial holder assembly |
| 07/23/1991 | CA1286746C Two-axis differential capacitance inclinometer |
| 07/17/1991 | CN2081080U Combined level meter with multiple division value |
| 07/16/1991 | US5032964 Headlight for motor vehicle |
| 07/16/1991 | US5031329 Digital level with plumb |
| 07/15/1991 | CA2007794A1 Torpedo shaped level with integrated lighting system |
| 07/11/1991 | DE4000314A1 Electronic spirit level with high measurement sensitivity - has low sensitivity to external mechanical influences and has suspended sensor or transducer |
| 07/09/1991 | US5031081 Headlamp for power vehicle |
| 07/09/1991 | US5029473 Acceleration sensor |
| 07/02/1991 | US5029251 Transducer for measuring angles of inclination, angular positions and other positions, and apparatus comprising such transducer |
| 07/02/1991 | US5027522 Electronic level indicator |
| 06/26/1991 | EP0433971A1 Device for measuring the movements of flexion of an antenna support mast and application for the pointing control of a motorised antenna |
| 06/25/1991 | US5025568 Photographic enlarger alignment tool and method for aligning a photographic enlarger |
| 06/25/1991 | US5025567 Illuminated spirit level using fiber optic devices |
| 06/25/1991 | US5025566 Portable |
| 06/19/1991 | EP0432511A1 Optoelectronic device |
| 06/18/1991 | US5024087 Acceleration sensor |
| 06/13/1991 | WO1991008492A1 Sensor for the determination of the acceleration and angle of tilt of a mobile object, in particular a motor vehicle |
| 06/06/1991 | DE3939410A1 Sensor Sensor |
| 06/04/1991 | US5020232 Elongate body |
| 06/04/1991 | CA1284579C Inclination sensor |
| 06/04/1991 | CA1284578C Strap-on leveling/plumbing device kit |
| 05/30/1991 | WO1991007639A1 Electronic compass with inclination-angle correction |
| 05/29/1991 | EP0429418A1 Watch for sailing races |
| 05/29/1991 | EP0290452B1 Electronic inclinometer |
| 05/29/1991 | EP0281584B1 Optoelectronic theodolite sensor |
| 05/29/1991 | DE4021455A1 Optoelectronic device for measuring deflection magnitude and direction - sends light with variable intensity to sensor with several receiver surfaces, microprocessor deriving deflection signal |
| 05/29/1991 | DE3938848A1 Simple inclination sensor - measures varying position of light intensity on photoelectric surface as bubble is displaced |
| 05/29/1991 | DE3938766A1 Simple level controller with hydraulic control valve - has controller mechanically coupled to pendulum actuator with damped pendulum arm, no expensive control electronics |
| 05/29/1991 | CN2077982U Crane integrated circuit level |
| 05/23/1991 | DE3938651A1 Motion sensor e.g. for triggering vehicle passenger safety device - has vertical closed bubble contg. low density, detectable indicator medium in movable liq. |
| 05/16/1991 | DE3937160A1 Elektronischer kompass mit neigungswinkelkorrektur Electronic compass with tilt angle correction |
| 05/14/1991 | US5014795 Percent grade boring and monitoring apparatus |
| 05/14/1991 | US5014441 Angle measuring apparatus |
| 05/08/1991 | DE3936591A1 Spirit level, esp. for aligning surfaces, shafts, etc. - has elongated bubble in intermediate carrier, with rubber elastic mounting for protection |
| 05/02/1991 | WO1991005985A1 Rescaleable inclinometer |
| 04/23/1991 | US5009546 Road paver-finisher with a combination of axles with steering wheels and crawler units |
| 04/18/1991 | CA2027755A1 Method of detecting verticality, detector therefor and level maintaining base which employs said detector and which acts to mount mechanism or apparatus |
| 04/17/1991 | EP0247036B1 Universal apparatus for levelling, verticality and height measurement with direct display of measurements |
| 04/16/1991 | US5007176 Simply-constructed instrument for measuring horizontal line, vertical line and angles |
| 04/12/1991 | CA2027228A1 Level vial holder assembly |
| 04/09/1991 | US5005412 Acceleration sensor |
| 04/04/1991 | DE3932053A1 Measuring escarpment movement using measuring probe - introduced through guide pipe inserted into ground and accepting target disc and light beam |
| 04/04/1991 | DE3932044A1 High precision angle measuring appts. - has freely-swinging pendulum disc coupled to potentiometer supplying display via A=D converter |
| 04/02/1991 | US5003700 Instrument for indicating an angular position of an object |
| 04/02/1991 | US5003699 Level vial with extender pitch range |
| 03/27/1991 | EP0261152B1 Device for automatic release of passenger protection devices in the event of an accident |
| 03/26/1991 | US5001838 Spirit level |
| 03/20/1991 | EP0417661A1 Verticality sensor |
| 03/19/1991 | US4999921 Adjustable spirit level |
| 03/07/1991 | CA2024561A1 Level for vertical collimator for head lamp |
| 03/05/1991 | US4996777 Snap-in level vial cover |
| 02/26/1991 | US4995169 Device for indicating angular position |
| 02/19/1991 | US4994741 Magnetic motion sensing device for sensing inclination and swaying |
| 02/19/1991 | US4993162 Apparatus for measuring inclinations of a component |
| 02/12/1991 | US4991303 Level with multi-position vial holder |
| 02/12/1991 | US4991301 Inductive displacement sensors |
| 02/06/1991 | CN2070898U Multifunctional tree measurer |
| 02/06/1991 | CN1011541B Six-contact type high-precision planeness-measuring method and its apparatus |
| 02/05/1991 | US4989334 Tilt indicator |
| 02/05/1991 | US4989327 Adjustable side draft indicator |
| 01/31/1991 | DE3931423A1 Sensor measuring position in earth's gravitational field - has hollow chamber partly filled with ferromagnetic or dielectric liq. in body carrying reactances |