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| Number | Title | Issue Date |
| 7434323 | Tilt sensor and method of providing the same A tilt sensor contains a first electrically conductive element, a second electrically conductive element, an electrically insulative element, and either a plurality of electrically conductive weights, or a first electrically conductive weight and a non-conductive we... | 10/14/2008 |
| 7421793 | Tilt sensor and method of providing the same A tilt sensor contains a first electrically conductive element, a second electrically conductive element, an electrically insulative element, and a plurality of electrically conductive weights. The electrically insulative element is connected to the first electrical... | 09/09/2008 |
| 7350305 | Laser activated audible signal emitting leveler This invention pertains to the leveling device applying the optical interaction between a laser beam and a freely floating air bubble confined in a transparent, liquid-filled vial. When the air bubble is impacted by the laser beam, the curved surface of the air-bubb... | 04/01/2008 |
| 7325327 | Method and apparatus for measuring angular or linear displacement An apparatus and method are disclosed for measuring the angular or linear displacement of an object. That displacement is transmitted to a movable conductive member, which, in response thereto, is moved to a position at which it electrically contacts one of a plural... | 02/05/2008 |
| 6941666 | Forklift mast position indicator A device which is attachable to the mast of a forklift for indicating to the forklift operator the tilt angle of the mast in a vertical plane centered on the forklift includes a pivotably supported weighted pendulum, and an elongated activating arm secured to the up... | 09/13/2005 |
| 6909374 | Level/position sensor and related electronic circuitry for interactive toy A sensor for use in an interactive electronic device. The sensor comprises a base member having at least one recess formed therein which is partially defined by a peripheral wall thereof. Disposed within the peripheral wall of the base member is at least one switch.... | 06/21/2005 |
| 6732440 | Orientation sensor An orientation sensor includes variable resistance elements within the sensor, the variable resistance elements forming an electric circuit with a conductive ball or drop of conductive material. The resistance of the electric circuit uniquely identifies the orientat... | 05/11/2004 |
| 6571483 | Orientation sensor An orientation sensor includes variable resistance elements within the sensor, the variable resistance elements forming an electric circuit with a conductive ball or drop of conductive material. The resistance of the electric circuit uniquely identifies t... | 06/03/2003 |
| 6400159 | Orientation sensor especially suitable for use in an underground boring device An orientation sensor especially suitable for use in an underground device is disclosed herein. This orientation sensor includes a sensor housing defining a closed internal chamber, an arrangement of electrically conductive members in a predetermined posi... | 06/04/2002 |
| 6282804 | Continuous monitoring inclination sensor A arcuate resistive sensor element is imprinted upon a ceramic substrate forming a wall of a ceramic body in which an electrolyte, advantageously silver nitrate dissolved in a mixture of methanol, water and butanol, is sealed. To avoid the effects of elec... | 09/04/2001 |
| 6165083 | Golf putting aid A golf putting aid is disclosed that includes a level detector for measuring a slope of a golf green and for generating an electrical signal representing the measured slope, a control circuit coupled to the slope measuring sensor for receiving the electri... | 12/26/2000 |
| 6137065 | Level weighing device A weighing device (2) for accurately weighing an object, which includes a support base (4), a weighing platform (8) for supporting the object and a load cell (6) mounted on the base (4) for measuring the weight of the object. The load cell (6) includes an... | 10/24/2000 |
| 6066955 | Orientation sensor especially suitable for use in an underground boring device An orientation sensor especially suitable for use in an underground device is disclosed herein. This orientation sensor includes a sensor housing defining a closed internal chamber, an arrangement of electrically conductive members in a predetermined posi... | 05/23/2000 |
| 5446968 | Strut height adjusting apparatus A strut height adjusting apparatus for adjusting the height of a strut automatically and simultaneously to measure the height of a floor while ensuring the perpendicularity of the strut with a warning sound or other indication. The strut height adjusting ... | 09/05/1995 |
| 5414677 | Ground movement sensor An earth movement sensor is provided which consists of a housing having a top shelf and an intermediate shelf. An electrically energizing signalling alarm is carried in the housing. An electrical power source is carried in the housing for the alarm. A pen... | 05/09/1995 |
| 5408457 | Device for detecting seismic motion A device detects seismic motion by linear motion of a seismic detection ball within an inner casing. Radial protrusions on the inside surface of a bottom wall of the inner casing maintain linear back-and-forth motion of the seismic detection ball while in... | 04/18/1995 |
| 5131801 | Forklift fork tilt angle indicator A device (38) for indicating to an operator (22) of a forklift (12) the tilt angle (32) of the tines (33) of the fork (28). The device includes a sensor (40) and an indicator display (42) which can be adjusted to a particular offset or calibrated to displ... | 07/21/1992 |
| 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 cross-level bar has one end mounted on the carriage and the oth... | 03/10/1992 |
| 4888540 | Electronic torquer interface and erection control circuit A gyroscope erection system uses an electrolytic tilt transducer (21) to modulate oscillator signals (OSC, OSC) originating from a signal conditioning circuit (27). The signal conditioning circuit (27) receives the modulated oscillator signal and compares... | 12/19/1989 |
| 4697174 | Ball actuated alarm device There are many instances, specifically supportated offshore platforms, where the initiation of catastrophic tilting should be detected and personnel warned. Conventional tilt detection switches, while capable of detecting a tilt condition, are prone to fa... | 09/29/1987 |
| 4552088 | Vehicle gearshift indicator A slope-measuring device is calibrated in terms of the gear in which a multi-gear apparatus should be engaged for negotiating the slope. For example, in a multi-gear bicycle, the calibration may indicate the gear range and specific gear in a bicycle. In a... | 11/12/1985 |
| 4493155 | Apparatus for remotely indicating angular position A sensor (16) is affixed to a piece of rotatable equipment (10). The sensor has a rolling member (26) freely moveable within a cage member (18). In operation, the rolling member (26) contacts electrically conductive surfaces (28,30) disposed about the int... | 01/15/1985 |
| 4446628 | Device for determining angle of inclination of ship A device for determining an angle of inclination of a ship has a curved guiding member fixedly connected with the ship and inclinable together with the latter, a rolling member arranged to roll on said guiding member in response to inclination of the ship... | 05/08/1984 |
| 4428125 | Inclination indicating apparatus A conventional mining bore hole drill assembly having a drill mounted on a boom wherein the orientation of the drill and boom with respect to the mined material is readily adjustable. First and second inclination detectors are mounted on the boom with eac... | 01/31/1984 |
| 4283798 | Attitude indicator for divers A device for enabling a diver to determine his relationship to the true horizon in deep and murky waters or when physiological sensations are of little value is described. An attitude sensor, incorporating a series of mercury switches, usually at the back... | 08/18/1981 |
| 4265028 | Survey apparatus and method employing canted tilt sensor A borehole mapping and navigational instrument which travels up and down in a well. The instrument includes a housing which supports at least a rate gyroscope, accelerometer, and an electric motor to rotate the accelerometer about an axis which is canted ... | 05/05/1981 |
| 4196524 | Head movement indicating device A device adapted to rest on the top of a person's head for indicating head movement from a predetermined position includes a box-like member supporting an indicator assembly which includes a part spherical support plate nested within a part spherical wall... | 04/08/1980 |
