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7493702 |
Tilt control method
A tilt control method includes a tilt control step for automatic control of the tilt (α) of a tilt device ( 1 ) by at least one electronic tilt sensor ( 2 ) based on gravitational force (G) and by...
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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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7182148 |
Tool with motion and orientation indicators
A tool has a housing; a display unit attached to the housing; and a motion detection unit operably coupled to the housing and to the display unit, wherein the motion detection unit is configured to...
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6349477 |
Self adjusting inclinometer
An inclinometer utilizing synchronous demodulation for high resolution and electronic offset adjustment provides a wide dynamic range without any moving components. A device encompassing a...
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5930907 |
Uniaxial horizontal sensor
A uniaxial horizontal sensor wherein factors causing errors are eliminated having high resolution and reproducibility and stability of detection with which a high levelness of inclination angle...
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5784794 |
Sensing device
A computer input device. The device is a body containing at least one tube. There is a first conductor in the tube able to move along the tube. Spaced contacts are formed within the tube and...
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5761818 |
Digital inclinometer
An inclination measuring apparatus including a level for measuring the inclination of an object; an LED for creating an image of the level; and a photodiode array for sensing the image of the level...
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5703484 |
Roll independent variable inductance inclinometer
The pitch sensor of the invention includes a sealed container filled about half full with a magnetic liquid. A pair of coils are wound around the container and produce inductances corresponding to...
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5428902 |
Inclinometer sensing circuitry and operation
Measurement circuitry for a biaxial inclinometer having electrolytic fluid incorporates a Schmitt trigger for measuring the resistance of each leg of the inclinometer by measuring the frequency...
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5428219 |
Fiber optic inclination detector system having a weighted sphere with reference points
A fiber optic inclination detector system for determining the angular displacement of an object from a reference surface includes a simple mechanical transducer which requires a minimum number of...
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5416977 |
Pitch sensor system
A very small pitch sensor which accurately measures angular rotation about he pitch axis while being substantially insensitive to angular rotations about the roll or yaw axes. The pitch sensor...
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5376925 |
Motion and direction sensors
Motion and direction sensors for end of train (EOT) telemetry equipment employ a piezoelectric film as the sensing element. The motion sensor has a mechanical design which is optimized for...
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5313713 |
Electronic level with display scale and audible tone scale
An electronic level includes a visual display (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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5237753 |
Capacitive gravity sensor and inclinometer
Disclosed is an improved inclination sensor and an improved inclinometer. A pair of plates in combination with a metallic housing provides accurate inclination information over ranges of 0°±60°...
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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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5174033 |
Angle sensor for a steerable boring tool
A roll sensor is provided for determining the roll angle of a rotatable member. The roll sensor includes a plurality of elements arranged in a predetermined manner, each element having a first...
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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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5094004 |
Railroad track gager/leveler/linear measurer
An instrument for measuring railroad track geometry for a pair of tracks. e instrument includes a carriage having wheels for permitting the carriage to ride on one of the tracks. An elongated...
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5072615 |
Apparatus and method for gauging the amount of fuel in a vehicle fuel tank subject to tilt
A vehicle fuel tank gauging apparatus is disclosed comprising sensor means for measuring the amount of fuel in the tank, electronic memory means for storing a signal indicative of the amount,...
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5056237 |
Electronic indicating device for coaxially aligning a pair of rotary members
A machine shaft aligning apparatus includes electronic indicating devices for automatically outputting signals to a computer indicative of the magnitude and direction of radial displacement of two...
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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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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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5012588 |
Self-recording readout system for surface measurement device
A data processing system associated with a surface flatness measuring device, distinguishes between differential elevation signals respectively generated by an accelerometer type sensor while at...
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4994741 |
Magnetic motion sensing device for sensing inclination and swaying
A motion detecting device comprises an encoder for generating two signals of A phase and B phase, 90° out of phase with each other, when a member being measured is subject to an inclination or...
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4942668 |
Digital inclinometer
A digital inclinometer for detecting the angular orientation of a structure includes a rotatable encoding disk on which is mounted a horizontal tilt sensor. The inclinometer electronically...
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4922620 |
Device for determining the inclination of a plane with respect to theoretical horizontal plane
The present invention relates to a device for determining the inclination of a plane with respect to a theoretical horizontal plane, including a box-like body defining a base plane. An inclination...
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4912662 |
Inclinometer
An inclinometer 20 has a sensing unit 40 for providing a varying capacitance signal depending on the orientation of the inclinometer 20. An oscillator circuit unit 82 includes the sensor unit 40 as...
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4878297 |
Hydrostatic level and elevation measuring device
An hydrostatic pressure sensor module is in liquid communication with a body of liquid under ambient atmospheric pressure via an elongated, flexible liquid conduit, the conduit being filled with...
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4858331 |
Method and apparatus for measurement of caster, king-pin-inclination, and camber on motor vehicles
A method is disclosed for the correction of errors in the measurement of caster, king-pin-inclination and camber on motor vehicles. Inclinometers are used whereby errors are avoided of the type...
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4747216 |
Clinometer/accelerometer and method
A clinometer includes a cyclindrical cavity having a conductive cylindrical wall and a vertical annular wall having a high resistance resistor uniformly distributed thereon. A freely moving, heavy...
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4716534 |
Microprocessor based level and angle finder
An angle finder (10) and level (40) are disclosed. The level (10) and angle (40) have digital displays (17) which provide a visual, numerical representation of the angular alignment of a reference...
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4694584 |
Reduced volume digital inclinometer
A high resolution, digital inclinometer having a full 360° linear range with accuracy which is independent of the angle of inclination. The linearity of the inclinometer is essentially flat...
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4656750 |
Heading sensor
A solid-state heading sensor is comprised by a three-axis Hall effect magnetometer and a three-axis accelerometer. The magnetometer is comprised by a cube-like structure (10) of non-magnetic...
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4606133 |
High resolution digital inclinometer
An inclinometer for producing high resolution signals of inclination relative to various references and which is capable of displaying inclination angles in various modes. High resolution data...
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4606132 |
Digital electronic inclination gauge
An apparatus for sensing and measuring changes in inclination and providing a digital readout. By sensing pulse width changes rather than amplitude, the apparatus provides improved immunity to...
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4586150 |
Electronic measuring device
A hand held device for taking measurements. The disclosed invention has particular utility for use in taking measurements for tailoring an article of clothing such as a suit. Two embodiments of the...
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4561299 |
Apparatus for detecting changes in inclination or acceleration
Apparatus for detecting changes in inclination or acceleration is disclosed. In its preferred environment the apparatus is used to determine the position of the sucker-rod of a sucker-rod pump. The...
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4557056 |
Electronic angle indicator
An electronic angle indicator providing a digital indication for a desired angle comprises a pivotally suspended gravity responding pendulum retaining a ring magnet, a reference angle dial...
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4556799 |
Motion sensing apparatus with variable threshold
Motion sensing apparatus comprise a mercury globule supported on an opaque concave surface having a transparent window at its lowest part. A photocell is exposed to light passing through the window...
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4551921 |
Apparatus for measuring the gradient or inclination of a surface or of a line
The invention concerns apparatus for measuring the inclination or gradient of a plane or line. The objective of the invention is apparatus for measuring the inclination or gradient of a plane or...
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4528760 |
Clinometer
A transducer is described which has primary application in a clinometer, detail of which is also contained in the application. The transducer comprises a hollow cylindrical housing of glass or...
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4503622 |
Precision inclinometer with digital numerical readout
An inclinometer providing a digital numerical readout includes a level sensor responsive to orientation and means for driving a liquid crystal display to indicate the inclination of a surface with...
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4492029 |
Inclinometer
An inclinometer comprising a sector weight pivotally supported on a main body which may become inclined, the weight being relatively rotatable with respect to the main body and constantly hanging...
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4486844 |
Dual axis inclination measuring apparatus and method
A dual axis inclination measuring system includes a sensor unit for placement on a surface to determine the inclination of the surface with respect to two mutually perpendicular horizontal axes and...
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4473960 |
Surface profile measuring device
A sensor mounted on a frame measures inclination of a sensitivity axis above two contact points on a surface on which the frame is positioned. The signal output of the sensor is converted to...
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4471534 |
Remote reading compass with 360 degree roll capability
A cylindrical compass gimballing and data readout system permitting 360° rotation about both yaw and roll axes includes a cylindrical compass housing flooded with semiconductive fluid to permit...
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4468864 |
Tilt meter
A tilt meter comprises two tilt sensors (110 and 110S, see FIG. 7) in a housing (105). Each sensor acts as two variable resistors (R s ), which together with two fixed resistors (R F ) form a...
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4467527 |
Digital head-out level
A digital level is disclosed that includes a digital display for displaying the angle of inclination between a straight edge of a digital level and a desired reference plane. An alarm is also...
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4459759 |
Angular rate and position transducer for borehole survey instrument
A transducer for sensing the angular position or rate of change of displacement of a housing of a borehole survey instrument with respect to a reference position includes a rotor magnetically...
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