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| Number | Title | Issue Date |
| 7555841 | Inclination sensor Inclination sensors with magnetic XMR- or Hall-sensor-principles were implemented in the past by the pivotably supported indicator magnet being supported on the front face of the axle of a pendulum, with the consequence that the static friction of the support had to... | 07/07/2009 |
| 7228739 | Precision flexure plate A precision flexure plate includes a flat disk positioned between two capacitor plates and supported by S-shaped beams. Deflection of the disk due to gravitational loads and resulting capacitance change is used to measure the accelerations in the direction perpendic... | 06/12/2007 |
| 7222433 | Electromagnetic inclinometer An angle sensor comprising a housing (1) having horizontal and vertical axes, which housing is adapted to receive a magnetic core (5) such that the core remains in substantially the same plane, e.g. by floating on a liquid (4). The core is provi... | 05/29/2007 |
| 7089674 | Angle-measuring gauge for motorcycles and the like An angle measuring guide includes a housing having a plurality of monolithically formed walls and an annular opening formed within selected ones of the walls. The rear wall has a planar surface for being directly mated with the motorcycle. A transparent lens is mono... | 08/15/2006 |
| 6557392 | Device for checking and calibrating high precision inclinometric sensors The present invention relates to a device for checking and calibrating high precision inclinometric sensors. It comprises a substantially quadrangular planar base body made of highly rigid material, set to float on mercury placed inside a tank; a pair of ... | 05/06/2003 |
| 6490802 | Orientation sensor An apparatus for precisely measuring the direction and grade of tilt, and the rate of change of tilt. The apparatus consists of a lighted fiber optic cable that is fitted with a flotation collar on one end, and the other end is vertically tethered to the ... | 12/10/2002 |
| 5452519 | Attitude sensor An attitude sensor comprises a spherical ball suspended in a fluid contained in a housing. The ball is maintained neutrally buoyant with respect to the fluid and out of direct contact with the housing. A means is provided for detecting the orientation of ... | 09/26/1995 |
| 5164708 | Single unit, multi signal, variable plane measuring and leveling device The invention is an improved level indicating and elevation indicating system using a hose containing fluid having a first and a second end, capable of being operated by a single person. An electronic method is used to indicate when a float at the first e... | 11/17/1992 |
| 5111188 | Electronic fluid-level sensor with three state indicator The invention is an electronic sensor for producing an indication of fluid level in a hose or tube and an electronic indicating circuit that uses the sensor's indication of fluid level for asserting one of three indicators depending upon whether the fluid... | 05/05/1992 |
| 5088204 | Level sensing unit and a level indicating device based thereon A level sensing unit, designed to be incorporated in a carpenter's level, is relatively insensitive to the expansion and contraction of the buoyant fluid, independent of the specific gravity of the fluid, and virtually free of oscillations accompanying a ... | 02/18/1992 |
| 5063680 | Self-erecting tiltmeter A self-erecting tiltmeter includes a vertical seeking assembly suspended on a gimbals within a housing which contains a viscous fluid. Portions of the assembly outer surface spherically match corresponding portions the housing inner surface, leaving a gap... | 11/12/1991 |
| 4876799 | Level sensing unit and a level indicating device thereon A level sensing unit, designed to be incorporated in a carpenter's level, is relatively insensitive to the expansion and contraction of the buoyant fluid, independent of the specific gravity of the fluid, and virtually free of oscillations accompanying a ... | 10/31/1989 |
| 4791730 | Direction sensing device A fluxgate compass direction sensor in which a fluxgate is mounted relative to a receptacle by means of a flexible circuit. The fluxgate is also suspended in a liquid by means of a float. In use, if the receptacle tilts relative to the horizontal, the lev... | 12/20/1988 |
| 4685218 | Level sensing unit and a level indicating device based thereon There is described a level sensing unit which is simple to operate, rugged in construction, sensitive to angular deviations of about 4 minutes 30 seconds, relatively inexpensive to construct, and very reliable. The unit is a sealed housing containing two ... | 08/11/1987 |
| 4496836 | Device for identifying a circumferential position A device is described which accurately and reproducibly identifies points on the circumference of a non-vertical pipe for use as reference marks for pipe inspections. The device comprises a light-permeable disk-shaped chamber having a plurality of pockets... | 01/29/1985 |
| 4435907 | Machine body inclination detector device A machine body inclination detector device for detecting change in position of a float with respect to a machine body according to the inclination of the machine body. The float is constructed such that the buoyancy of the float does not undergo a great c... | 03/13/1984 |
