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7597002 |
Diamagnetic levitation system
The invention concerns an inertial sensor or an actuator based on diamagnetic levitation, said inertial sensor or actuator comprising support means serving as main support body for an inertial...
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7497021 |
Multi-axis bubble vial device
A multi-axis bubble vial device includes a bubble vial having a vial body defining a fluid chamber with a curved upper surface, and a quantity of fluid partially filling the chamber. The fluid...
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7350303 |
Level, angle and distance measuring device
The portable self-contained horizontal and vertical level, angle and distance measuring device is suitable for indicating whether or when two or more points are level with each other and for...
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7325321 |
Method and device for monitoring the alignment of a measuring instrument, and measuring instrument
The method and the device serve to monitor the alignment of a measuring instrument, specifically a balance. To perform this function, the monitoring device is equipped with an inclination sensor...
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7299557 |
Tilt sensor
A tilt sensor has a source for optical radiation, a pattern support having an optically effective pattern for the passage of the optical radiation generated by the source, a tilt-sensitive unit...
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7111407 |
Vertical shaft alignment tool
An apparatus and a method for aligning a vertical shaft or multiple axially coupled vertical shafts in a hydroelectric turbine generator or a similar vertical-shaft system, and for providing...
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6993849 |
Capacitive balance leveling device
An aerospace system includes a leveling device defining two plane levels (yz-plane and xz-plane). The plane levels are included within an inertial measurement unit and each of the plane levels...
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6684138 |
Dynamic platform leveling system
An improved, dynamic level detection and leveling system utilizing a biaxial inclinosensor to generate a series of measurements that reflect a level of tilt. When sufficient measurements have been...
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6664534 |
Tilt sensing device and method for its operation
A tilt sensing device and method for its operation, the device being of the type comprising a) a housing, b) a radiation transmitter and a radiation receiver arranged in or at the housing to form a...
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6449858 |
Angle sensor
A two-axis angle sensor comprising a pair of bubble chambers ( 3,4 ) and associated bubble detectors ( 5,6 ). A processor ( 42 ) calculates the angle of the sensor by combining the signals from the...
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6449857 |
Inclinometer and inclinometer network
An electronic inclinometer and a centrally controlled network of inclinometers are disclosed. A resistive or capacitive inclinometer sensor measures inclination in two orthogonal axes. Measuring...
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6320653 |
Multiple-axis inclinometer for measuring inclinations and changes in inclination
A multiple-axis inclinometer for measuring inclinations and changes in inclination comprises a cell which contains a liquid forming a horizon and which has a transparent base, and a device for...
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6313912 |
Laser leveling instrument with a leveling base and fine self-leveling of the laser beam
A laser levelling instrument with a levelling base (7) and fine self-levelling of the laser beam (10) has an inner cylinder (5) which bears aligning elements and is suspended in an oscillating...
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6301795 |
Tilt sensor using magnet and magnetic sensor
A tilt sensor capable of sensing tilt in two axes includes an outer shell, a magnet at a fixed position inside the shell, and a reference element movable within the shell in response to gravity....
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6196048 |
Turntable acceleration generating apparatus
A turntable acceleration generating apparatus includes a first servo motor, a large-diameter turntable rotated by the first servo motor, and a small-diameter turntable being mounted on the...
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6058617 |
Audio visual combination extension level
An electronic level is provided including a central member having a rectilinear configuration and an electronic level indicator mounted thereon.
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6008757 |
Surveying probe and method for computing the spatial coordinates of a point
An extendible surveying probe comprises two collinear position detecting units that allow the probe to be used in an inclined position for accessing vertically inaccessible points with a tip...
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5774996 |
Biaxial inclination sensor
A biaxial inclination sensor including, in the inner bottom of a circular liquid chamber 11 formed in a sensor holder 1 made of an insulating material and having a bottom surface 28 made...
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5704130 |
Measuring instrument
An optical measuring system to indicate or determine the relative position of an object and/or a substrate in relation to a horizontal plane comprises an at least partially transparent measuring...
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5680708 |
Temperature compensated tilt sensor
A new tilt sensor system is disclosed which provides substantial temperature independence and is very inexpensive to build and to operate. The apparatus is made up of a first source of a first...
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5612679 |
Electrolytic tilt sensor
A method of configuring an electrolytic tilt sensor having a plurality of non-precious metal electrodes and a common electrode at least partially immersed in an electrolyte and included within an...
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5592745 |
Electronic level displaying inclination with regard to instrument length
An electronic level includes a visual scale (similar to a ruler scale) having a number of parallel line segments. The inclination of the device is shown by illuminating various of the scale line...
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5512905 |
Pole-tilt sensor for surveyor range pole
A surveyor range pole, for example, equipped with a GPS receiver and antenna mounted at the top end, a battery mounted at the bottom end to better balance the pole, a tilt sensor and a direction...
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5406713 |
Apparatus for maintaining a scientific and measuring instrument or the like in a level plane
An apparatus for maintaining a scientific or measuring instrument or the like in a level horizontal plane. The apparatus comprises an inclinometer comprising a support housing and a plumb member...
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5371951 |
Two-axis inclinometer
A two-axis inclinometer having an inclination-sensitive ray-deflecting device is described, via which a geometrical figure having at least one angle is projected onto a linear array. In addition to...
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5365671 |
Inclinometer
A two-axis tilt sensor, or inclinometer (10), uses a spherical reference element (18) floating in an inert fluid (20) and including a magnet (42) to produce an asymmetrical weight distribution. The...
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5335190 |
Inclinometer which is rescalable through the use of multiple angles
An inclinometer 300 includes a sensing unit 302 for providing a signal dependent on the orientation of the inclinometer 300. The inclinometer 300 includes a rescaling unit 322 which improves the...
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5322441 |
Method and apparatus for providing a portable visual display
There is disclosed a system and method for providing a portable visual display device. The device, in one embodiment, can be worn over the head by a viewer in the manner of a helmet. The viewer...
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5218771 |
Orientation sensing apparatus
Orientation sensing apparatus including a bubble suspended in liquid contained within a transparent cylindrical container, light sources aligned along the cylindrical axis of the container that...
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5210954 |
Clinometer
A gradient indicator has a clinometer arranged on a motor-driven turntable allows reversible measurements to be taken and supports the gradient indicator in precisely reproducible positions on...
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5199712 |
Golf swing training apparatus
A golf swing training apparatus is disclosed having a housing, a circuit board, a buzzer, a battery, an on/off switch, and a pair of mercury switches. The housing has a clip member extending...
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5191713 |
Electronic tilt measuring system
The invention provides an electronic tilt measuring system for measuring the relative tilts of various platforms such as weapons on a ship. The basic system comprises an inclinometer (1) at each...
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5180986 |
Two axis capacitive inclination sensor
A two axis sensor is provided for detecting angular movement relative to either of two mutually perpendicular axes. The device includes a two-axis sensor comprising an upwardly directed,...
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5172481 |
Electronic inclinometer
A sensor for an inclination measuring device which comprises a capsule (3) part-filled with a conductive liquid. First to fourth electrodes (A-D) are disposed within the capsule in contact with the...
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5159761 |
Electronic level indicator
An electronic level indicator, having a housing including at least one planar surface, at least one gravity responsive sensor mounted on the housing, the sensor constituting at least a part of two...
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5148604 |
Micromechanical tilt sensor
A sensor for measurement of tilt or inclination angle features a sensor element made from a monocrystalline silicon wafer, from which is etched at least one movable silicon mass. The silicon mass...
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5143208 |
Level sensor
An apparatus for sensing the horizontal level of a table or other surface and returning that table or other surface back to level. The apparatus includes a housing within which first and second...
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5136784 |
Vehicle electronic level measuring and display device
A vehicle level and measuring and display device for use especially in recreational vehicles or the like for ensuring that the vehicle is in a gravitationally level position comprising a sensing...
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5133417 |
Angle sensor using thermal conductivity for a steerable boring tool
An angle sensor for determining the roll angle of a rotating member is provided. The angle sensor includes an array of paired electrical components, each electrical component having an electrical...
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5106255 |
Posture adjusting mechanism of cargo handling device for use in cargo trucks
A posture adjusting mechanism according to the present invention is used for a cargo handling device for a cargo truck in which an arm member is mounted in such a manner that it can swivel about a...
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5079847 |
Two axis inclination sensor
A two axis sensor is provided for detecting angular movement relatice to either of two mutually perpendicular axes. The device includes a two-axis sensor comprising an upwardly directed,...
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5065522 |
Method of detecting vertically, detector therefor and level maintaining base which employs said detector and which acts to mount mechanism or apparatus
A method of detecting the verticality, a detector therefor and a level maintaining base for a mechanism and an apparatus which employs the above-described detector are disclosed. The method of...
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5038137 |
Sleep posture monitor and alarm system
A sleep posture monitor and alarm system detects one or more of four possible sleep positions and sounds an alarm when an individual wearing the apparatus assumes one or more of the detected...
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5031329 |
Digital level with plumb
An electronically operated level apparatus and method to allow the slope of a surface to be easily measured. The apparatus includes a hermetically sealed bladder partially filled with an...
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5031330 |
Electronic boresight
Pairs of level sensing devices are used in a method that aligns plane surfaces to one another. One of the pairs of level sensing devices is located on each of the plane surfaces. The level sensing...
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4949467 |
Inclinometer including an apparatus for maintaining a scientific and measuring instrument or the like in a level plane
The present invention provides an inclinometer comprising a supporting housing and a plumb member suspended within that supporting housing. The plumb member is provided on its exterior surface with...
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4928263 |
Hydrophones and similar devices
An accelerometer-based direction finding and ranging transducer such as a hydrophone uses piezoelectric ceramic as the active material. Orthogonally arranged accelerometers share an inertial mass...
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4887359 |
Vehicle leveling and stabilizing apparatus
A level sensor usable in a vehicle leveling and stabilizing apparatus particularly adapted for use with a motor home to level and stabilize the vehicle upon irregular terrain preparatory to camping...
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RE32962 |
Level with electronic signals
A device that may be of different shapes and sizes to function as a level that emits an audio and visual signal when the device is level or parallel with gravity. It will also emit the same signals...
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4811491 |
Two-axis differential capacitance inclinometer
A two-axis inclinometer having a central electrically conductive member inserted within and spaced from the interior walls of a non-electrically conductive vessel. A plurality of four plates are...
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