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| Number | Title | Issue Date |
| 7353614 | Vehicle compass system with continuous automatic calibration The compass system of the present invention utilizes an improved calibration routine in which a processing circuit of the compass recalibrates the compass each time three data points are obtained from a magnetic field sensor that meet predetermined criteria. One suc... | 04/08/2008 |
| 7308766 | Satellite antenna alignment device and method An alignment device and method for aligning an antenna with a satellite. The device includes a grooved cylindrical sleeve inserted into a ridged cylindrical sleeve, a raised azimuth indicator ring and a magnetic or digital compass mounted upon the grooved cylindrica... | 12/18/2007 |
| 7269985 | Magnifying lens cover for combination padlocks By providing a magnifying member which is securely affixed to the housing of a combination padlock in cooperating association with the rotating dials thereof, an easily produced, combination padlock is achieved which provides a display zone for the pre-set combinati... | 09/18/2007 |
| 7248983 | Electronic compass and method of controlling an electronic compass using independent calibration and compass heading modules A method for controlling an electronic compass includes receiving raw magnetic field data into a calibration module and determining a calibration output based upon the raw magnetic field data. The raw magnetic field data is also received into a compass heading modul... | 07/24/2007 |
| 7243431 | Trailer hitch alignment device The invention is a trailer hitch alignment device that synergistically combines a laser level with an alignment mounting bracket, where the bracket, using a fastening means, provides a base on a vehicle for affixing the laser level to a vehicle. The laser level prov... | 07/17/2007 |
| 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 |
| 7183997 | Satellite dish location device A satellite line of site alignment device for the installation of all satellite dish antenna. The alignment device provides a hand held orientation and angular inclination determination for properly positioning a satellite receiving dish with a known geosynchronous ... | 02/27/2007 |
| 7173420 | Magnetic detection device and method for manufacture A magnetic sensor assembly comprising magnetic detection elements is provided. In a magnetic sensor assembly 100 according to the present invention, a magnetic detection element 140 is fixed to a base member 110 and, by having the base member | 02/06/2007 |
| 7137209 | Level and protractor A level and protractor tool (100) includes a body (102) with three sections. The first section (106) includes a spring clip (108) mounted on the body. The spring clip is adapted to be attached to an item that is to be bent or otherwise me... | 11/21/2006 |
| 7134213 | Magic compass A magic compass that gives the illusion it defies the laws of nature, providing usage as an aid for locating the direction of prayer as well as a novel promotional device for companies, having a magnetized compass needle (16) which is attached via a linking m... | 11/14/2006 |
| 7113451 | Electronic watch having a compass function The multi-function watch (1) includes a magnetic sensor assembly associated with its electronic circuits. The hands (7 to 9) of its display are activated by electric motors to indicate the time in a time mode and directions in a compass mode. In... | 09/26/2006 |
| 7069663 | Apparatus and method of calibrating azimuth of mobile device Provided are an apparatus and method of calibrating azimuth of a mobile device. The apparatus includes: a magnetic field measuring unit having a plurality of magnetic sensors aligned in a constant angle interval on the mobile device and measuring magnetic field data... | 07/04/2006 |
| 7038449 | Biased magnetic field strength indication tool A detection device, for detecting a strength of a magnetic field of an object, includes a housing having a center, a first end and a detection end. A permanent magnetic element is suspended above the center of the housing having a first magnetic field strength and a... | 05/02/2006 |
| 6967791 | Illumination systems and methods System and method for illuminating a target area with a desired illumination pattern. According to preferred embodiments of the invention, a cartridge-engaging assembly may be positioned adjacent a data cartridge, light may be emitted from at least one light source ... | 11/22/2005 |
| 6954990 | Angle measuring device A measuring device is provided for carpenters, roofers and other tradesmen. The device is made of relatively lightweight plastic and has a variety of uses. The elongated base is rectangular in cross sectional and includes a scale for measuring distances along one si... | 10/18/2005 |
| 6904688 | Sight protective cover system A sight protective cover system adapted for a target sight including a protective cover. The protective cover being a body having at least two L-shaped slots. Also, including a mounting section which has a protective cover insert extending outward from the mounting ... | 06/14/2005 |
| 6701631 | Convertible directional azimuth and dip measuring modular compass and method A compass adapted to measure direction and dip values with or without the assistance of the earth's magnetic field. A laser pointer module and a magnetic needle module are interchangeably arranged in a body having an attached reference angle plate appropr... | 03/09/2004 |
| 6647633 | Low profile compass with removable protective cover and magnetic bull's eye alignment system A low profile compass of the type including a transparent base member and fluid-filled vial contains a directional indicator in the vial in the form of a circle which is alignable with another circle imprinted on the vial. A hinged cover assembly can be d... | 11/18/2003 |
| 6357128 | Low profile compass with removable protective cover and magnetic bull's eye alignment system A low profile compass of the type including a transparent base member and fluid-filled vial contains a directional indicator in the vial in the form of a circle which is alignable with another circle imprinted on the vial. A hinged cover assembly can be d... | 03/19/2002 |
| 6141881 | Electronic analogue compass An compass having an electronic magnetic field sensor and an analog directional display is disclosed wherein a signal from the field sensor proportional to one component of the earth's magnetic field is alternated in polarity and integrated to produce a t... | 11/07/2000 |
| 6094830 | Inclination-compensating display device for a compass The present invention provides a compass comprising an at-least-partially-transparent housing having a top and a bottom, a vertically orientated, conical pivot bearing, and a magnetic detection means which is mounted on the vertically-oriented conical piv... | 08/01/2000 |
| 5894674 | Method and apparatus for determining direction A map is provided for indicating the direction of a fixed point (S), such as a sub-satellite point, from any point (P) within a specified area which is a substantial fraction of the earth's surface. The map projection is such that the actual direction to ... | 04/20/1999 |
| 5828984 | Data processing method for an electronic compass system A method for converting distorted compass data values into corrected data values which employs linear transforms. A linear transform is formulated and programmed into the read only memory of the microcomputer of the electronic compass system. The microcom... | 10/27/1998 |
| 5697162 | Arrangement serving to indicate the direction of a given geographic location The arrangement (42) according to the invention is formed by a watch comprising a dial (8) on which is shown a map (14) centered on a given geographic location, Mecca in particular. The arrangement (42) comprises a device (48) for indicating the direction... | 12/16/1997 |
| 5566462 | True magnetic compass A magnetic compass comprising an arrangement to displace a correcting marker to create a compass correcting coefficient equal to the sum of the variation and the deviation errors effecting the compass so as to counteract the compass error, and to indicate... | 10/22/1996 |
| 5461792 | Navigation aid with biangulation A navigation device is disclosed, having a lens across an opening at one end of a case, and a compass across an opening at the opposite end of the case. A transparency holder is positioned between the lens and the compass, adapted to receive a map transpa... | 10/31/1995 |
| 5388337 | Angle orienting level apparatus A level includes a compass member fixedly mounted within the level, the level having spirit levels positioned on opposed sides of the compass, and the compass having a rotatable ring arranged to provide for angular deflection relative to a predetermined o... | 02/14/1995 |
| 5381603 | Reference pointer for a compass display An electronic compass has a display including a reference pointer that indicates a reference heading stored in response to an input signal. The reference heading is the current heading at the time of the input signal, and the reference pointer in the disp... | 01/17/1995 |
| 5339528 | Transparency holder for navigation aid A transparency holder for use in a navigation device is disclosed. The transparency holder is positioned between a lens and a compass, and is adapted to receive a map transparency in one correct orientation only. The one orientation only feature is achiev... | 08/23/1994 |
| 5274927 | Compass apparatus A combination of a compass and a connecting arrangement. The compass includes a compass housing having a base wall, a circular wall connected to and upstanding from the base wall and a transparent window connected to the circular wall to define a sealed c... | 01/04/1994 |
| 5274928 | Compass mounting apparatus A combination of a compass and a connective arrangement for facilitating connection of the compass to a firearm or other portable object. The connective arrangement includes a one or two part elongated and hollow sleeve having an interior opening therein ... | 01/04/1994 |
| 5187871 | Underwater navigation device A navigation device for personal use includes a face mask with a transparent window for binocular vision when the device is worn by the user. The face mask has a directional indicator attachement with a multiplicity of symbols to identify the directional ... | 02/23/1993 |
| 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 material on each of three orthogonally related faces of which is... | 04/14/1987 |
| 4495706 | Alignment gage for dish antenna An alignment gage for accurately positioning the azimuth and elevation angles of a fixed receiving dish antenna. The alignment gage is mounted to the dish and includes a gravity actuated pendulum cooperating with an arcuate scale for setting the elevation... | 01/29/1985 |
| 4485825 | Instrument for measuring positions and displacements of joints and spinal column (arthrospinometer) An instrument for measuring positions and displacements of portions of a human body, comprising a base plate and a belt or suction cup for detachably securing the base plate to a portion of a human body. A bifurcated holder is mounted on the base plate fo... | 12/04/1984 |
| 4483080 | Alignment detection system Apparatuses and processes for detecting misalignments between various portions of a deformable body, such as an aircraft, are disclosed. Orientation detection devices, such as potentiometric vertical indicators and gyros, are provided at a master module d... | 11/20/1984 |
| 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 transmission of a digitally multiplexed signal from a remote... | 09/18/1984 |
| 4395829 | Plumb measuring device A plumb measuring device fabricated from a plurality of detachable modular assemblies includes a first assembly provided with an alignment bar, a scale plate pivotally mounted to the bar for determining the plumbness of a vertical surface, a bubble level ... | 08/02/1983 |
| 4359823 | Gravity adjusted compass A spherical compass having a gravity operated support for automatically positioning its double axis gimbal system into a horizontal plane for selective mounting of the compass with its outer athwartships gimbal system axis mounted horizontally and its for... | 11/23/1982 |
| 4327498 | Magnetic compass compensation system In a magnetic compass compensation system suitable for use within a ferrous land vehicle, a secondary magnetic sensor senses, the total magnetic field as components along a three axis system drawn vertical, lateral and transverse to the ferrous vehicle. C... | 05/04/1982 |
